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236 Wild Edible Plants
FIGURE 8.9 Visualized results of the check- all- that- apply (CATA) analysis of the carob pastry sauces. Control – classic chocolate sauce; SCP – sauce with carob pulp; SCS – sauce with carob seeds; SCSP – sauce with mix of carob seeds and pulp.
8.5 CONCLUSIONS
Investigating the bioactive prole of carob from various regions including Moldova, Italy, Algeria, and Spain reveals signicant geographic variations, with Moldovan carob showing notably higher concentrations of biologically active compounds. Analytical methods, such as UV/ Vis spectral analysis, conrm the stability and potency of these bioactive compounds during processing. Carob’s comprehensive nutrient and bioactive proles underscore its potential to enhance the nutritional and functional quality of diverse food products, contributing to improved health outcomes and meeting contem­porary dietary trends.
Carob’s nutritional prole is robust: its pods are composed of approximately 48– 56% soluble sugars, 3– 4% protein, and 0.4– 0.8% lipids. The high dietary ber content, approximately 6.7 grams per ounce of powder, supports digestive health and weight management. Essential minerals such as calcium (up to 450.67 mg/ 100 g DW), magne­sium (186.44 mg/ 100 g DW), and iron (7.829 mg/ g DW) signicantly bolster various physiological functions. Moreover, carob is rich in bioactive compounds, including polyphenols and avonoids, which mitigate oxidative stress and reduce risks associated with chronic diseases.
Edible Wild Carob as a Source of Nutrients in Food Production 237
Innovative applications of carob in food production, such as carob powder replacing cocoa powder, provide a low- fat, caffeine- free alternative with inherent sweetness, thereby reducing the need for additional sugar. Carob also shows promise in the pharma­ceutical and cosmetic industries due to its antioxidative, anti- inammatory, and mois­turizing properties. Experimental carob- based pastry sauces highlight carob’s potential in functional foods. These sauces, formulated with carob powder, exhibit signicantly higher mineral content, reduced caloric value from 230.7 kcal/ 100 g to approximately
85.1– 88.9 kcal/ 100 g, and enhanced antioxidant activity compared to traditional cocoa­based sauces.
ACKNOWLEDGMENTS
The research was supported by Institutional Project 020405 “Optimizing food pro­cessing technologies in the context of the circular bioeconomy and climate change”, Bio- OpTehPAS, being implemented at the Technical University of Moldova.
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Antioxidants from Wild Plants
9
in Meat and Meat Products
Natalia Bozhko, Vasyl Pasichnyi, Vasyl Tischenko, Andrii Marynin, and Khrystyna Vasylyshyn
9.1 INTRODUCTION
Wild plants contain a wide range of biologically active compounds that often have adaptive signicance for the plant, providing protection from pests, diseases, competitors, and stressful situations, are responsible for the smell, taste, color of plants, and also take part in attracting pollinators and interacting with the environment. Some of these compounds may have potential value for humans as medicines or nutritional supplements.
Phytocompounds are classied according to their chemical composition and func­tional properties. The main classes of phytocompounds include avonoids, which have antioxidant properties and are potentially benecial to human health; terpenoids that include essential oils, which give plants a characteristic aroma, have medicinal prop­erties and are used in phytotherapy; alkaloids, nitrogenous compounds that often have a strong pharmacological effect on the human body; phenolic acids having antioxi­dant and anti- inammatory properties; saponins, which are amphiphilic glycosidic sec­ondary metabolites with foaming properties using in the production of cleaning agents.
Biologically active compounds of wild plants are very diverse in their chemical structure, physicochemical properties, and biological functions. Each plant contains a
243DOI: 10.1201/9781003486794-9
244 Wild Edible Plants
unique set of phytocompounds, research of which opens up new opportunities for the use of wild ora in food, drugs, and industrial products.
9.2 PLANTS AS SOURCES OF BIOACTIVE COMPOUNDS WITH ANTIOXIDANT
ACTIVITY
9.2.1 Polyphenols as Secondary Metabolites of Wild Plants
Plants contain a lot of different bioactive ingredients with medicinal properties and anti­oxidant potential. Various compounds, such as vitamin E, vitamin C, polyphenols, and carotenoids, serve the endogenous antioxidant defense system of the human body as exogenous sources (Barros et al., 2016).
Vitamin E, a fat- soluble vitamin present in biological membranes, is part of the endogenous defense system against random radical oxidation in cells and plays an important role in preventing lipid peroxidation. Reactive oxygen species, such as hydroxyl or peroxyl radical, react with vitamin E to form a tocopheryl radical, which in turn regenerates by vitamin C (Jungert & Neuhäuser- Berthold, 2020).
Phenolic compounds, plant’s secondary metabolites, play important roles in growth and reproduction, providing defence against ultraviolet radiation, pathogens, and predators. They possess antioxidant activity, and their use as natural antioxidants in food production is a promising alternative for synthetic ones, especially given the restrictions on the application of butyloxyanisole and butyloxytoluene in food (Mizobuchi et al., 2022).
Polyphenols are phenylpropanoids that are synthesized by plants in unfavor­able conditions, such as the presence of pathogens or adverse climatic conditions (Di Lorenzo et al., 2021).
More than 8,000 phenolic molecules have been identied, which must contain at least one aromatic ring and one or more hydroxyl (OH) groups. Polyphenols are usu­ally divided into avonoids, stilbenes, and phenolic acids. Flavonoids commonly found in foods are anthocyanins, avonols, avan- 3- ols, avones, isoavones, avanones, and stilbenes (Durazzo et al., 2019).
9.2.2 Characteristics and Functions of Flavonoids
Flavonoids are one of the most common groups of phenolic compounds, derivatives of benzo- γ- pyrone, based on the phenylpropane skeleton. Most of them can be considered as chromone or chromane derivatives containing 2, 3, or 4 aryl radicals. Most of the avonoids contained in food products are combined with sugars, acids, or alcohols.
Antioxidants from Wild Plants in Meat and Meat Products 245
Flavonoids are divided into the following subclasses: anthocyanins, avanols, avanones, avonols, avonones, and isoavones. According to research (Adriouch et al., 2018; Akhlaghi et al., 2018; Al- Khayri et al., 2022; Runo et al., 2021), avonoids have a wide range of pharmacological effects, including antioxidant, antibacterial, hepatoprotective, anti- inammatory, and antihyperlipidemic properties.
Chemically, avonoids are phenolic compounds having the chemical structure of phenylbenzopyran with a C6– C3– C6 carbon skeleton connected to a chromane ring, to which three or more hydroxyl groups are attached in most of these compounds (Rana & Gulliya, 2019). Flavonoids can occur as aglycones or conjugated with sugars and/ or organic acids (Dias et al., 2021). Flavonoids, derived from the aro­matic amino acids phenylalanine and tyrosine, are C15 compounds located in three rings (C6– C3– C6). Such chemical modications of the avonoid molecule as hydroxylation, alkalization, or glycosylation change the primary structure of the molecule. The change of chemical groups in the structures of avonoids correlates with the corresponding biological and chemical properties and bioavailability (Shen et al., 2022).
The main biological activity of avonoids, which is widely studied, is their anti­oxidant properties, which help prevent free radical damage by scavenging reactive oxygen species, activating antioxidant enzymes, inhibiting oxidases (xanthine oxidase, cyclooxygenase, lipoxygenase) and reducing α- tocopheryl radicals. Flavonoids increase uric acid levels, metal chelating activity and antioxidant activity of low molecular weight compounds to mitigate oxidative stress (D’Amelia et al., 2018).
Depending on the degree of oxidation and hydroxylation of the C6– C3– C6 propane skeleton and the location of the phenyl radical, avonoids are divided into several groups (Shah & Smith, 2020). Flavones are colorless or slightly yellow, their hydroxylated forms are found in tansy and chamomile owers (avone apigenin). The phenyl group is located in the 2nd position.
Isoavones have a phenyl group in the 3rd position. They are contained in the roots of the eld steelhead (Ononis arvensis).
Flavonols have white to pale- yellow colors. They differ from avones by the presence of the OH group in the 3rd position.