Добавил:
Sekretar
kiopkiopkiop18@yandex.ru
t.me/Prokururor I Вовсе не секретарь, но почту проверяю
Опубликованный материал нарушает ваши авторские права? Сообщите нам.
Вуз:
Предмет:
Файл:Ординатура / Хирургия / Библиотека им академика М.И. Перельмана / Книга_5643_Библиотеки_им_академика_М_И_Перельмана.pdf
4 Herbal Pharmacopeia
1.3.5 romanIan PharmacoPoeIa (rPh)
The 10th edition of the Romanian Pharmacopoeia (RPh), which has been in use since 1993, consists of 1,315 pages. It is complemented by three supplements: Supplement I (154 pages, 2000),
Supplement II (313 pages, 2004), and Supplement III (370 pages, 2006) [11]. This edition marks a
notable decrease in the number of herbal drug monographs, now listing only 48—34 of which are
indigenous and 14 imported—compared to the 180 monographs found in the rst edition [18]. Each
monograph for herbal drugs includes the title in Latin, starting with the genus or species name followed by the organ used in the nominative singular form, as well as Romanian names, synonyms,
the full scientic name of the plant, and, where relevant, the minimum content of quantied constituents [4].
1.3.6 hauSa herbal PharmacoPoeIa
The Hausa herbal pharmacopoeia, deeply rooted in the traditional medicinal practices of the Hausa
community in northern Nigeria, serves as a valuable repository of indigenous knowledge. This compendium offers insights into the herbal medicine traditions of this rural community, highlighting
their rich heritage in utilizing plant- based remedies for various health conditions. One of the focal
points of the Hausa pharmacopoeia is the use of plants to treat oral diseases. This aspect of their
traditional medicine underscores the community’s reliance on natural resources to address specic
health concerns [19]. By examining the potential efcacy of these treatments through the lens of
pharmacological literature, we can gain a better understanding of how these age- old practices align
with modern scientic knowledge. The conservative approach taken by the Hausa herbalists mirrors
the broader practices of folk medicine, where the effectiveness of a remedy is often judged by its
ability to alleviate specic, well- dened symptoms. The Hausa herbal pharmacopoeia represents a
critical link between traditional knowledge and contemporary scientic inquiry [20]. By documenting and analyzing these practices, we can appreciate the enduring relevance of indigenous medicine
in modern healthcare, especially in the context of complex diseases like malaria.
1.4 COMBINING HERBAL MEDICINE, ENZYME ENGINEERING,
ANDNANOTECHNOLOGY
Nanoparticles (NPs) have unique attributes, including a large surface area and benecial physicochemical properties, that allow them to signicantly modify the pharmacokinetics and pharmacodynamics of bioactive compounds they encapsulate. When avonoids are encapsulated in NPs, their
stability, solubility, and permeability are notably improved [21]. This encapsulation extends the
drug’s circulation time in the bloodstream, improves targeted delivery, and increases tumor penetration. These attributes collectively contribute to superior therapeutic outcomes, such as enhanced
anti- osteonecrosis and anti- tumor efcacy, compared to free drugs. The solubility and permeability
of drugs are signicantly improved when encapsulated within NPs, resulting in increased bioavailability [3]. Moreover, nanoparticles (NPs) can be designed to target specic tissues or cells through
either passive or active mechanisms. This customization helps prolong their circulation time in the
bloodstream and improves targeted delivery [12]. Delivery systems utilizing nanotechnology for
active herbal components offer numerous advantages, such as enhanced solubility, increased bioavailability, better pharmacological effectiveness, and improved stability of the active compounds.
They also provide protection against chemical and physical breakdown, enabling the use of lower
dosages [22].
Although herbal medicine holds signicant potential as an alternative therapy, incorporating
nanotechnology into these treatments comes with a number of challenges. Key concerns include the
high costs of production, challenges associated with scaling up the process, and the limited information available regarding the safety and toxicity of herbal formulations that use nanotechnology [17].
Introduction to Herbal Pharmacopeia 5
FIGURE 1.1 Schematic representation of the integration of herbal medicine, enzyme engineering, and nanotechnology aimed at enhancing productivity, activity, and therapeutic effects of epimedium avonoids. This
approach also seeks to improve in vivo delivery efciency. Key elements include nanoparticles (NP), glucose
(Glc), rhamnose (Rha), the reticuloendothelial system (RES), and P- glycoprotein (P- gp).
The stability of nanoparticles is another signicant concern, as some may exhibit a tendency to
release drugs upon contact with blood components. The high production costs associated with nanosystems for phytochemicals result in elevated market prices. In European countries, where drug
selection and public funding are based on rational criteria, these high costs pose a substantial barrier.
Consequently, the likelihood of high- priced nanomedicines reaching the market and patients in
these regions is diminished [23]. Nonetheless, the development of herbal medicines utilizing
nanotechnology- based delivery systems remains a promising strategy for enhancing their pharmacological activity (Figure 1.1).
1.5 AYURVEDA AND THE INTEGRATION OF NANOTECHNOLOGY
Ayurveda, a time- honored system of medicine rooted in the ve- element principle of Pancha
Mahabhuta—Aakash (Space), Vayu (Air), Tej (Fire), Jal (Water), and Prithvi (Earth)—provides
a comprehensive framework for understanding the effects of food and medicine. This system uses
physical attributes, manifesting as one or more of the six tastes, combined with principles such as
temperature (hot or cold), post- digestive effects, and a range of stimulating, transformative (inammatory), or unifying activities to create a holistic therapeutic effect [24]. India’s prominence in herbal
medicine is signicantly attributed to its traditional systems, including Ayurveda and Unani, both of
which rely heavily on herbal substances. Siddha, another traditional system, also incorporates herbs,
albeit to a lesser extent. A rich history of empirical observation, experimentation, and renement
has shaped the evolution of herbal formulations in India. However, modernizing these traditional
systems to meet international standards for both raw and processed herbal products is crucial [25].
This involves standardizing detailed information on the chemical proles of plants, their various
6 Herbal Pharmacopeia
parts, and how these factors change with plant age and environmental conditions. By integrating
this data with an understanding of bio- molecules, their potency, and their synergistic effects, we can
reformulate classical medicines and open new avenues for herbal therapeutic products.
The scope of traditional medicine systems can be greatly expanded by exploring bio- molecules
in previously untapped plants and developing products that serve not only as drugs but also as
nutraceuticals or functional foods. Such innovations have the potential to enhance preventive
healthcare strategies, including weight management, stress reduction, and immune system support
[15]. Herbal medicines are integral to various traditional medical systems, such as Chinese medicine, Ayurveda, Unani, Naturopathy, Osteopathy, and Homeopathy. With a growing global interest
in herbal remedies, major pharmaceutical companies are increasingly focusing on the development of higher- quality herbal drugs, creating ripe opportunities for the advancement of botanical
medicines [22].
The global fascination with Ayurveda has surged in recent years, with many outside India now
embracing this ancient medical system. Herbal medicines are increasingly seen as effective alternatives to allopathic and homeopathic treatments [26]. The integration of nanotechnology with
Ayurveda presents exciting new possibilities, particularly in enhancing the antibacterial properties
of herbs through nanoparticles. Nanotechnology, a rapidly advancing eld of research, offers innovative applications in medicine. For example, nanoparticles can be used in hyperthermia therapy to
produce localized heating and tissue destruction under an alternating magnetic eld, holding promise for cancer treatment. Moreover, nanoparticles have the potential to improve various imaging
techniques, such as uorescence imaging, positron emission tomography (PET), and ultrasound
[24]. Their distinctive characteristics, including a larger surface area, amplify their mechanical,
magnetic, optical, and catalytic properties, thereby expanding their use in medicine.
Utilizing Ayurvedic nanomedicines for cancer therapy has the potential to transform the eld by
allowing for more precise drug delivery, thereby enhancing treatment effectiveness and minimizing
adverse effects. Traditional Ayurvedic bhasmas, which have been used historically to treat a range
of conditions, inherently incorporate principles of nanotechnology [27]. These bhasmas possess
Rasayana properties, known for immune modulation and anti- aging benets, and Yogavahi characteristics, which facilitate targeted drug delivery, making them highly valuable in contemporary medical treatments.
1.6 ENHANCING HERBAL MEDICINES THROUGH NANOTECHNOLOGY
The development of herbal medicines presents considerable challenges for pharmaceutical companies, primarily due to the factors inuencing the biological efcacy and therapeutic consistency of
plant- based treatments [28]. Conditions such as asthma, pain, and fever demand rapid therapeutic
action, whereas chronic ailments like hypertension, cancer, and diabetes require sustained effects
over time. The inherent physical and chemical properties of herbal medicines often restrict their
effectiveness at both ends of this spectrum.
Nanotechnology presents a promising approach by utilizing nanomaterials—such as polymer
nanoparticles, solid lipid nanoparticles, lipid crystal systems, liposomes, and nanoemulsions—as
delivery systems to protect herbal medicines from external degradation and improve their bioavailability [29]. Research indicates that nanotechnology can signicantly amplify the effectiveness of
herbal medicines by improving drug potency, facilitating the sustained release of active ingredients,
reducing dosage requirements, and enhancing overall biological activity.
Over the past decade, the study of polymer nanoparticles has seen substantial progress, owing to
their ability to target specic sites and respond to external stimuli. When designing polymer nanoparticles for herbal formulations, careful consideration of biotoxicity and stability is crucial. Utilizing
biodegradable and biocompatible polymers, such as polylactic acid (PLA), polylactic- glycolic acid
(PLGA), and chitosan, can greatly optimize the delivery mechanisms for herbal compounds [30]
(Table 1.1).
Introduction to Herbal Pharmacopeia 7
TABLE 1.1
Overview of Selected Herbs: Scientic Names, Uses, and Historical Applications
Herb Scientic Name Common Uses and Properties Historical Uses References
Swertia chirata Swertia chirata Antifungal, antibacterial, useful for
controlling blood sugar levels.
Cinnamomum
verum
Thymol crystal Thymol (2-isopropyl-
Tribulus
terrestris
Curcuma longa Curcuma longa Utilized in Ayurveda, Unani, and Siddha
Tinospora
cordifolia
Cinnamomum verum Eases menstrual discomfort, anti-
diabetic, antibacterial, antioxidant,
anti- inammatory, anticancer
effects.
Strong antiseptic property, pleasant
5-methylphenol)
Tribulus terrestris
Linn.
Tinospora cordifolia Scavenges free radicals generated
aromatic odor, strong avor.
Annual shrub, grows in
Mediterranean, subtropical, and
desert climates.
medicine for sinusitis, rheumatoid
arthritis and loss of appetite.
during aatoxicosis.
Used to treat diabetes,
malaria, and liver
diseases.
Women are advised to
drink warm cinnamon
water to reduce
menstrual pain.
Known as “Ajwain ke
phool.”
Used in Ayurveda for
various medicinal
purposes.
Commonly known as
“Haldi Ka Phool.”
Used in traditional
medicine for various
ailments.
[2]
[4]
[11]
[4]
[23]
[3]
1.7 APPROACHES OF NANOTECHNOLOGY IN HERBAL MEDICINE
Recently, there has been a growing interest in applying nanotechnology to herbal medicines.
Different techniques are used to create nanoformulations, such as nanoparticles, nanoemulsions,
and liposomes [31]. These colloidal systems have particle sizes ranging from 10 nm to 1000 nm.
Some nanoparticle systems, however, have been observed with average particle sizes greater than
100 nm. For example, nanonized curcuminoids, paclitaxel, and praziquantel have average particle
sizes of 450 nm, 147.7 nm, and over 200 nm, respectively [23].
1.7.1 SolId lIPId nanoParTIcleS (Sln)
Solid lipid nanoparticles (SLNs) offer a unique method for drug delivery that sets them apart from other
colloidal systems like emulsions, liposomes, and polymeric nanoparticles. SLNs combine the benets
of these systems while addressing their limitations, making them a promising alternative [28]. Their
production involves simple processes suitable for large- scale manufacturing, resulting in improved
physicochemical stability and protection for sensitive drugs. SLNs are made from lipids that are solid
at room temperature. They are created by melting the lipid and incorporating the drug, with stabilization provided by a surfactant [32]. This robust lipid structure offers effective protection for drug molecules against chemical breakdown. SLNs are created by integrating a liquid lipid (oil) into an oil/water
emulsion that contains solid lipids or a blend of solid lipids. SLNs, with particle dimensions between
50 and 1,000 nm and demonstrating biocompatibility, are appropriate for a range of pharmaceutical
delivery methods, such as oral, injectable, and transdermal administration [30]. Unlike liposomes and
nanoemulsions, polymeric nanoparticles offer specic advantages, such as enhanced drug and protein stability and controlled release properties. Typically composed of physiological lipids, SLNs are
preferred for their low risk of acute and chronic toxicity and their suitability for large- scale production. They are employed in delivering diverse phytoconstituents and in treating chronic conditions like
lymphatic infections, cancer, and neurodegenerative diseases [33]. Surface modication of SLNs can
address the challenge of burst release upon oral administration, enabling more targeted drug delivery.
8 Herbal Pharmacopeia
1.7.2 nanoemulSIonS
Nanoemulsions are stable, isotropic systems that remain thermodynamically balanced. These systems are clear dispersions of oil and water, held together by a layer of surfactant molecules at the
interface. Typically, the droplets in nanoemulsions range from 10 to 100 nanometers in size and
can be classied as either oil- in- water (o/w) or water- in- oil (w/o). Their clarity is attributed to the
droplets being smaller than one- quarter of the wavelength of visible light, which is around 150
nanometers [34]. Unlike basic micellar solutions, nanoemulsions demonstrate greater solubilization
capacity and enhanced stability compared to more unstable systems like emulsions and suspensions. They can be generated with minimal energy input, either by heat or agitation, and possess
an extended shelf life. The tiny droplet size amplies the interfacial area, thereby improving drug
transport characteristics [35]. Nanoemulsions also exhibit enhanced consistency in plasma concentration proles and drug bioavailability. Their tiny droplet size provides stability by preventing
sedimentation and creaming, with Ostwald ripening being the main mechanism of degradation. One
signicant use of nanoemulsions is in creating nanoparticles. These uniform, kinetically stable, and
isotropic systems, which include oil, water, and a mix of surfactants and cosurfactants, feature droplet sizes between 20 and 200 nanometers [36]. Nanoemulsions enhance the permeability, stability,
and solubility of both hydrophilic and lipophilic phytoconstituents, thereby improving bioavailability and therapeutic efcacy.
1.7.3 lIPoSomeS
Liposomes are tiny vesicles made of materials similar to cell membranes, which makes them particularly efcient for drug delivery, especially in targeting cancer and various diseases [25]. These
spherical, enclosed structures have a lipid bilayer that can range from nanometers to several micrometers in size and display distinct amphiphilic characteristics. For example, liposomal vesicles loaded
with silybin, created through the ethanol injection method, showed improved liver- protective and
stomach- protective effects in mice suffering from liver damage induced by carbon tetrachloride
[37]. The research found that silymarin liposomes demonstrated a 55% increase in hepatoprotective
efcacy compared to silymarin that was not encapsulated in liposomes. Additionally, silymarin proliposomes were created to evaluate their pharmacokinetic properties and bioavailability in rats and
beagle dogs after oral ingestion, revealing enhanced bioavailability in comparison to unformulated
silymarin [7]. Additionally, a liposomal buccal formulation of silymarin signicantly improved its
hepatoprotective effect in albino rats. Liposomes, with their bilayer lipid membranes and hydrophilic core, benet from their amphiphilic nature, enhancing the efcacy and safety of drugs due
to their biocompatibility and biodegradability [11]. They can function as carriers for drugs that are
either hydrophilic or hydrophobic. These carriers are categorized into three types based on their
size and number of layers: small unilamellar vesicles, large unilamellar vesicles, and multilamellar
vesicles [17].
1.7.4 eThoSomeS, TranSFeroSomeS, and TranSeThoSomeS
Ethosomes are a distinct class of ethanolic liposomes that include phospholipids, cholesterol, stabilizers, and elevated levels of ethanol. They are specically engineered for topical and transdermal drug
delivery [31]. The substantial ethanol concentration greatly improves the stability and permeability
of these vesicles, facilitating efcient delivery of drugs into deeper layers of the skin. Conversely,
transferosomes are exible and adaptable vesicles composed of phospholipids, stabilizers, edge activators, alcohol, and high amounts of hydrophilic modulators such as organic ions [38]. They are
categorized into rst, second, and third generations based on their composition and structural characteristics. These vesicles can penetrate the skin’s deeper layers without compromising their integrity.
Transethosomes are an advanced variant of both ethosomes and transferosomes, incorporating additional edge activators such as Tween 80, Span 80, and sodium cholate. This advanced formulation
Introduction to Herbal Pharmacopeia 9
enhances drug permeation into deeper skin layers, facilitating both topical and systemic drug delivery
with controlled and sustained release of molecules of varying molecular weights [26].
1.7.5 nIoSomeS and PhyToSomeS
Niosomes are vesicular structures formed from non- ionic surfactants like Tween, Span, and Brij.
They notably improve the solubility and stability of phytoconstituents. The process involves blending these surfactants with cholesterol, which provides mechanical stability and minimizes leakage,
thereby enhancing the efciency of entrapment [39]. Niosomes are generally categorized into small
unilamellar vesicles, multilamellar vesicles, and large unilamellar vesicles. Phytosomes, a technology pioneered by the Italian pharmaceutical and nutraceutical rm Indena, are molecular assemblies
made up of phospholipids combined with plant extracts that are high in hydrophilic phytoconstituents [9]. These complexes, usually formed in ratios of 1:1 or 1:2, enhance stability and bioavailability through hydrogen bonding. Known also as herbosomes, phytosomes can be incorporated into
various formulations including creams, solutions, lotions, emulsions, and gels [40].
1.7.6 mIcelleS, dendrImerS, and nanoSTrucTured lIPId carrIerS (nlcS)
Micelles are colloidal systems composed of surfactants or amphiphilic substances like pluronics,
polyethylene glycol (PEG), and polycaprolactone (PCL). These structures generally range from 5 to
100 nm in size [36]. They form stable aggregates when the concentration reaches a critical micellar
concentration and at specic temperatures known as the critical micellar temperature. Micelles are
highly effective at solubilizing hydrophobic drugs and improving their ability to penetrate interstitial spaces [41]. Dendrimers are complex, highly branched macromolecules with customizable
dimensions and forms. They feature a central core surrounded by both hydrophobic and hydrophilic
groups. These characteristics make dendrimers suitable for use as drug delivery systems and therapeutic agents [38]. Some dendrimers are commercially produced and incorporated into available
products. Nanostructured lipid carriers (NLCs) are an advanced evolution of solid lipid nanoparticles (SLNs). By blending solid and liquid lipids, NLCs form a matrix that enhances the capacity
for drug encapsulation. The presence of liquid lipids creates structural imperfections in the matrix,
which facilitates increased drug loading [42]. NLCs are engineered to stay solid at room temperature
by meticulously regulating the amount of liquid lipid present. They are categorized into three types:
imperfect matrix, amorphous matrix, and multiple matrix types [11].
1.7.7 nanoParTIcleS, nanocaPSuleS, and nanogelS
Nanoparticles, with sizes between 10 and 100 nanometers, are highly effective carriers for both hydrophilic and hydrophobic drugs. They safeguard the encapsulated drugs from chemical and enzymatic
breakdown [39]. For controlled and targeted drug delivery, biodegradable polymers are becoming
more preferred compared to non- biodegradable options. Nanocapsules, made from biodegradable
polymers like poly(lactide) (PLA), poly(e- caprolactone) (PCL), and poly(lactide- co- glycolide)
(PLGA), are often referred to as layer- by- layer nanoparticles [27]. These nanocapsules consist of a
drug core encased in polymers or polyelectrolytes with opposing charges, facilitating targeted delivery
to specic locations and enhancing the pharmacokinetics, stability, and solubility of phytoconstituents that are poorly soluble in water [31]. Nanogels, on the other hand, are three- dimensional, crosslinked polymer networks that can be hydrophilic, hydrophobic, or amphiphilic. They are divided into
hydrogels and organogels, with dimensions varying from 1 to 1000 nanometers [43].
1.8 TYPES OF NOVEL DRUG DELIVERY SYSTEMS (NDDS)
This section describes the classication of novel drug delivery systems (NDDS) specically utilized
with herbal drugs and phytochemicals (Table 1.2).
TABLE 1.2
Comparison of Various Drug Delivery Systems
Type Composition Method of Preparation Advantages Disadvantages Application References
Liposomal Drug
Delivery
System
Ethosomal Drug
Delivery
System
Transferosomal
Drug Delivery
System
Phytosomal
Vesicular
Drug Delivery
System
– Phospholipids
– Water
– Water
– Phospholipids
– Ethanol
– Phospholipids
– Surfactants
– Water
– Bioactive herb
extract
– Phospholipid
– Passive Loading Systems:
– Mechanical dispersal
– Solvent dispersal
– Detergent expulsion
– Cold Method:
– Mix drug, ethanol, and
phospholipid; heat at 30°C
– Hot Method:
– Combine heated aqueous and
organic phases and add drug
– Self- assembly with unique
malleable lm
– Formation of strong bond
between bioactive herb and
phospholipid
– Reduces tissue exposure to
harmful drugs
– Increases stability
– Adaptable for targeting
– Reduces drug toxicity
– Enhances delivery of large
molecules
– Promotes skin permeability
– High patient compliance
– Versatile with high
entanglement efciency
– Suitable for both topical
and systemic delivery
– Sustained release
– Overcomes traditional DDS
limitations
– Stable in gastrointestinal
environment
– Enhances penetration and
bioavailability
– Short half- life
– Low solubility
– Leakage
– Phospholipid degradation
– Product loss during
transfer
– Potential skin irritation
– Suited for slow- release
drugs
– Chemically unstable
– Not cost- effective
– Depends on phospholipid
purity
– None specied CNS stimulant,
Used for various drug
deliveries, e.g.,
actinomycin- D
Topical and transdermal
delivery, enhancing
permeability and
delivery of peptides
and proteins
Effective DDS for both
topical and systemic
delivery
antioxidant, immune
booster (e.g., Grape
Seed), hepatic
illnesses, skin
infections
[21]
[43]
[44]
[43]
10 Herbal Pharmacopeia
Introduction to Herbal Pharmacopeia 11
1.9 NANOTECHNOLOGY AND ITS APPLICATIONS
Nanotechnology involves the manipulation of materials at the nanoscale, offering transformative
potential in various elds. In the realm of herbal pharmacopeia, researchers are increasingly exploring ways to integrate phytoconstituents—bioactive compounds derived from plants—into nano- sized
carriers [45]. This approach aims to achieve precise drug delivery, enhance the absorption of these
compounds, and improve overall treatment efcacy. Encapsulating phytoconstituents at the nanoscale
helps to overcome several challenges. It reduces their susceptibility to degradation, enhances their
solubility in aqueous solutions, and facilitates controlled, gradual release. These advancements not
only bolster the effectiveness of phytoconstituents in treating a range of diseases but also expand their
potential applications across medicine, agriculture, energy, and environmental remediation.
The fusion of nanotechnology with phytoconstituents has ushered in innovative opportunities,
paving the way for novel therapeutic strategies and applications [44]. This synergy highlights the
evolving landscape of herbal pharmacology and underscores the signicant impact that nanotechnology can have on advancing drug discovery and delivery systems (Table 1.3).
TABLE 1.3
Potential Applications of Nanotechnology in Herbal Pharmacopeia
Sr. No. Futuristic Approaches Signicant Potential References
1 Nanoparticle Delivery
System
2 Cancer Therapeutics Incorporating phytoconstituents into nano- sized formulations can
3 Agriculture and Crop
Enhancement
4 Nanobiosensor Integration of phytoconstituents into nanosensor platforms for
5 Antimicrobial
Nanomaterial
6 Nanogel and Drug
Release
7 Energy Storage and
Conversion
8 Environmental
Remediation
9 Personal Care and
Cosmetics
10 Anti- inammatory and
Immunomodulator
Applications
Encapsulation of phytoconstituents within nanoparticles enhances
targeted delivery to specic cells or tissues. This improves
bioavailability and therapeutic efcacy, reduces side effects, and
increases impact in drug delivery and personalized medicine.
enhance cancer treatment by precisely targeting cancerous cells,
reducing harm to normal tissues, and boosting the efciency of
therapies like chemotherapy.
Nanoencapsulation of phytoconstituents can develop smart
agrochemicals for targeted delivery of pesticides, herbicides, and
growth- promoting compounds. This minimizes environmental
impact and maximizes crop yields.
detecting specic molecules or pathogens. Applications include
environmental monitoring, disease diagnosis, and food safety.
Creation of novel antimicrobial materials incorporating
phytoconstituents for use in wound dressings, surface coatings, or
water treatment systems to combat bacterial and fungal infections.
Nanogels loaded with phytoconstituents provide controlled and
sustained drug release, useful for conditions requiring long- term
treatment such as chronic pain management.
Nanostructured materials with phytoconstituents could be used in
energy storage (e.g., batteries and supercapacitors) and energy
conversion (e.g., solar cells and fuel cells).
Phytoconstituent- loaded nanoparticles designed for efcient pollutant
removal from soil and water, aiding in cleaning up contaminated
environments and improving ecosystem health.
Nanoencapsulation of phytoconstituents in skincare and cosmetic
products can enhance stability, controlled release, and efcacy of
the products.
Phytoconstituents with anti- inammatory or immunomodulatory
properties can be engineered into nanoparticles for more effective
treatment of inammatory diseases and autoimmune disorders.
[45]
[18]
[34]
[44]
[45]
[45]
[9]
[14]
[9]
[34]
12 Herbal Pharmacopeia
1.10 EFFICACY AND SAFETY OF HERBAL MEDICINE
The efcacy and safety of traditional herbal medicines have been established through their extensive use over millennia. Nonetheless, to address public concerns about quality control and clinical
validation, more rigorous research is essential. As herbal medicines become increasingly popular,
especially within the sphere of complementary and alternative medicine (CAM), there is a growing demand for robust clinical evidence. In this context, reverse pharmacology presents a valuable
approach [41]. This approach utilizes well- established experiential knowledge to identify potential
research opportunities, which are subsequently explored through experimental and clinical studies to develop drug candidates. Reverse pharmacology is especially benecial in countries such
as India, where varied healthcare systems support the comprehensive documentation of new pharmacodynamic effects through interdisciplinary teamwork [46]. Often, observational therapeutics
precede reverse pharmacology in the development of new natural drugs.
Herbal medicines are often regarded as safe with minimal risk of severe side effects, though there
are notable exceptions. Some herbs can lead to adverse reactions or interact with other medications,
either enhancing or diminishing their effects. This issue is highlighted in the three- volume series
Adverse Effects of Herbal Drugs, published by Springer in the 1990s. Furthermore, herbal products
might interact with foods, conventional medications, or other drugs [38]. Nonetheless, there is still
a lack of extensive data on herb–drug interactions, and many reports are not supported by thorough
laboratory research (Table 1.4).
1.11 CONCEPT OF BHASMA AND NANOTECHNOLOGY
The preparation of Bhasma, a traditional Ayurvedic formulation, involves two primary processes: the
extraction of metals from their mineral forms (known as Satpavna) and the conversion of puried metals or alloys into non- toxic Bhasma. In the Satpavna process, raw mineral materials are subjected to a
series of treatments that induce physiochemical transformations and incorporate additional constituents [21]. This meticulous process is crucial for ensuring the efcacy and safety of the nal product.
A pivotal step in Bhasma preparation is Bhasmikaran, which involves the transformation of metallic
compounds combined with organic substances into an ash- like residue [48]. This technique contrasts
with modern methods used to engineer nanoparticles. Throughout Bhasma preparation, metals are
specically converted into desired chemical forms, effectively eliminating their inherent toxicity.
This transformation involves converting metals from their zero- valent state to higher oxidation states,
a critical process for reducing toxicity [49]. Consequently, metal particles are downsized, the toxic
effects of metal oxides are neutralized, and the medicinal properties are effectively enhanced.
1.11.1 nanoParTIcle naTure oF bhaSma
Nanoparticles are at the forefront of both biomedical and commercial innovation due to their unique
properties and applications. Their nanoscale dimensions enable them to penetrate cellular structures, engage in cellular metabolism, interact with DNA and proteins, and potentially modify gene
expression [13]. Metal nanoparticles, characterized by their extremely small size and distinctive
chemical properties, play a crucial role in the development of diverse therapeutic applications [36].
In Ayurvedic medicine, Bhasma bears a resemblance to nanocrystalline materials. These materials
consist of crystallites with at least one dimension smaller than 100 nm [41]. Ayurvedic metallic
nanocrystallites, referred to as Bhasma, exhibit remarkable physicochemical characteristics, such
as biocompatibility and ease of surface functionalization. The production of Bhasma utilizes traditional methods like Mardana (trituration) and Bhavana (levigation), which play a crucial role in
reducing particle size and forming these metallic nanocrystallites [47].
Recent advancements in nanotechnology have signicantly enhanced the production of Bhasma.
Nanotechnology focuses on materials at dimensions ranging from 1 to 100 nm. When materials are
reduced to this scale, their mechanical, thermal, optical, magnetic, and other properties can change
Introduction to Herbal Pharmacopeia 13
TABLE 1.4
Summary of Nanoparticles for Various Therapeutic Applications, Including Synthesis
Methods and Functionalization
Nanoparticle
Sr. No.
1 Curcumin Anticancer Potent anticancer and antitumor Wet- milling
2 Paclitaxel Anticancer Several tumors, ovarian and
3 Berberin Antineoplastic Inammation and several
4 Camptothecin Anticancer Potent anticancer Encapsulated with
5 Ginkgo biloba Alzheimer’s
6 Triptolide Anti- arthritis Rheumatoid arthritis,
7 Salvia
8 Quercetin Antioxidant Potent anticancer Gelatin and chitosan
9 Breviscapine Anticardiovascular Cerebrovascular and
10 Naringenin Antioxidant,
11 Dodder Antioxidant Carcinogenesis and
12 Silymarins Hepatoprotectives Hepatoprotectives, several liver
13 Genistein Antioxidant Cardiovascular, breast and
14 Annual magwort Antimalarial Antimalarial, also used for
Name Functionalization Uses
breast tumor
cancer
Loss of memory, thinking,
dementia
Anti- hyperlipidemia Cerebrovascular diseases Phospholipid
miltiorrhiza
anti- inammatory
language, behaviour
inammatory and
autoimmune diseases
cardiovascular diseases
Several tumors and
hepatoprotective
hepatoprotective
diseases and breast cancer
uterine cancer also in
osteoporosis
asthma
Method of
Synthesis References
technique
Nano precipitation [46]
Emulsion and ionic
gelatin
hydrophobically
modied glycol
Combination of dry
and wet process
Nano encapsulation [15]
complex loaded
loaded
Lipid encapsulation [48]
Nano precipitation [9]
Nano precipitation [22]
Cold
homogenization
Nano emulsion
and chitosan
microspheres
Hydrophilic
encapsulation
[32]
[46]
[47]
[8]
[11]
[46]
[19]
[17]
[43]
dramatically. For example, as a sphere’s size decreases from 1 micrometer to 1 nanometer, its surface area- to- volume ratio increases by a factor of 109, which can greatly affect its catalytic properties
[50]. The particle size of Bhasma can be precisely controlled by adjusting the number of Putapaka
(heat treatment) steps during its preparation. For therapeutic uses, particle sizes in the range of
10–100 nm are generally employed, while for aphrodisiac applications, smaller sizes of 10–50 nm
are preferred. Both Mardana and Bhavana processes contribute to achieving nanoscale particle sizes
(less than 100 nm in any dimension) [45].
Advancements in nanotechnology have been greatly aided by sophisticated analytical methods,
including transmission electron microscopy (TEM), scanning tunneling microscopy (STM), and
atomic force microscopy (AFM). These techniques enable precise conrmation of the nanometric
properties of Bhasma [38]. Nanoparticles can have either positive or negative charges on their surfaces, depending on their preparation method. Their applications include drug delivery, diagnostic
purposes, and targeted therapeutic interventions [51]. In modern medicine, metals such as silver,
gold, zinc, copper, and calcium are employed as Bhasmas, often demonstrating efcacy without
adverse effects.