Ф.7.03-03
MINISTRY OF EDUCATION AND SCIENCE OF THE REPUBLIC OF
KAZAKHSTAN
M. AUEZOV SOUTH KAZAKHSTAN STATE UNIVERSITY
Kanseitova E.T, Berdembetova A. T., Kobeyeva Zh.K., Balabekova A.S
METHODICAL INSTRUCTIONS
on performance of laboratory works on discipline "Technology of milk and dairy products"
Shymkent- 2016
MINISTRY OF EDUCATION AND SCIENCE OF THE REPUBLIC OF
KAZAKHSTAN
M. AUEZOV SOUTH KAZAKHSTAN STATE UNIVERSITY
Department «Technology and food safety»
Kanseitova E.T., Berdembetova A. T., Kobeyeva Zh.K., Balabekova A.S.
METHODICAL INSTRUCTIONS
laboratory works
on discipline
"Technology of milk and dairy products"
for students in the specialty
5B072700 - "Technology of food products"
Shymkent- 2016
UDK 355.65
BBK 36
Originators: Kanseitova E., Berdimbetova A. T., Kobeyeva Zh.K., Balabekova A.S.
Methodical instructions to laboratory works on discipline "Technology of milk and dairy products" - Shymkent: SKSU after M. Auezov, 2016. - 66 pages.
Methodical instructions are made according to requirements of the curriculum and the program of discipline "Technology of milk and dairy products" and include all necessary data on performance of laboratory works of a course.
Laboratory works contain theoretical bases of standard technological processes, work performance techniques, safety measures of performance of work and control questions for each work.
Methodical instructions are intended for students of the specialty 5V072700 Technology of Food Products
Reviewer: Shambulova G.D. - Cand.Sci.Tech., docent
It is considered and is recommended for printing a faculty meeting of PI and PPB (the protocol No. ___ from "___" _________ 20 ____ and the methodical commission of faculty the Higher school "Textiles and food engineering" (the protocol No. ___ from "__" _____ 20 ___)
It is recommended to the edition Educational and methodical council of SKSU after M. Auezov, the protocol No. ___ "___" _________ 2016 y.
© M. Auezov South Kazakhstan state university, 2016
Responsible for Berdimbetova A. T release.
CONTENTS
Introduction |
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Purpose and tasks of laboratory works |
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Recommendations to students on preparation for occupations |
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Laboratory work №1 "Definition of freshness and naturalness of milk" |
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Laboratory work № 2 "Definition of percentage of fat, protein, the dry fat-free rest () and density in tests of milk by means of the analyzer of quality of Laktan milk" |
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Laboratory work №3 "Studying of methods of definition of a mass fraction of protein in milk and dairy products" |
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Laboratory work № 4 "Studying of methods of definition of a mass fraction of lactose and mineral substances" |
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Laboratory work № 5 Studying of a method of determination of content in vitamin C milk (ascorbic acid) and enzymes |
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Laboratory work № 6 "Studying of technological features of production of pasteurized milk" |
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Laboratory work № 7 "Studying of technological features of production of drinks on the basis of whey" |
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Laboratory work № 8 "Studying of technology of preparation of sour-milk ferments" |
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Laboratory work №9 "Studying of technological features of liquid fermented milk products" |
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Laboratory work №10 "Studying of technology of sour cream" |
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Laboratory work № 11 "Studying of technological features of production of sour cream with fillers" |
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Laboratory work № 12 "Studying of technological features of production of cottage cheese" |
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Laboratory work№13 "Studying of technological features of production of cottage cheese products" |
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Laboratory work №14 "Studying of technological features of production of Curt in the traditional way" |
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Laboratory work №15 "Production technology of soft ice cream" |
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Safety regulations during the work in laboratory |
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Literature |
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Introduction
In training of bachelors of specialty 5B072700 – "Technology of food products" of one of basic disciplines of the curriculum "The technology of milk and dairy products" are. This discipline consists of a lecture rate, a laboratory practical work and practical works.
The laboratory practical work is an important, integral part of studying of this discipline. On laboratory researches skills of the practical experimental and settlement analysis of engineering procedures take root, the main regularities of their course, influence of process parameters on the main indicators – extent of transformation, speed of process and a product yield are studied and acquired. Based on it optimum conditions of conducting process are chosen, the major factors characterizing cost, technological and ecological efficiency of the studied technology are calculated.
The educational and methodical benefit covers content of all rate and contains 15 laboratory works, each of which includes: work purpose; the theoretical data explaining essence of the studied process; description of installation; the used equipment, technical and tools; technique of performance of work and analyses; procedure of payments of technological indicators of process; control questions for self-checking of knowledge and abilities; safe engineering in case of performance of work.
During a semester students perform works according to the scope of laboratory works on modules given in a syllabus. On the first occupation students get acquainted with safe engineering during the work in laboratories which shall be observed strictly in case of accomplishment of each work. Laboratory works are performed by crews on 3-4 persons after receipt of the admission of the teacher which provides knowledge of a technique of carrying out work and the scheme of installation. After performance of work each student carries out calculations according to a task, draws conclusions about efficiency of process and arranges the report. The report constitute according to requirements of the SMQ SKSU named by M. Auezov 7.04.2012 – "Studies. General requirements to the organization, content and training" also arrange in a hand-written or printing type. Protection of the report consists in the answer to control questions on theoretical bases of processes.
Laboratory works are constituted according to contents of programs of discipline "Technology of milk and dairy products" for students of specialty 5V072700 – Technology of food products and according to requirements of the SMQ SKSU named by M. Auezov F.7-03-2012 – "Management of educational and methodical processes".
PURPOSE AND TASKS OF LABORATORY WORKS
The purpose of laboratory researches – fixing and deepening of the gained theoretical knowledge in the course of accomplishment of experiments, mastering practical skills of carrying out laboratory researches and the analysis of results of work.
Tasks of laboratory researches:
mastering a technique and acquisition of experience of conducting pilot studies of engineering procedures with use of modern computer technologies;
acquisition of abilities of operation of technical means and laboratory equipment;
forming of skills of handling of the experimental data, registrations and representations of results of work;
development of creative capabilities and independence in the analysis of results of researches and a formulation of conclusions about efficiency of process.
Studying of methods of pilot study of the main characteristics of raw materials, determination of components of raw materials, carrying out standard testing on establishment of physical and chemical indicators of properties of raw materials, quality requirements, a quality evaluation.
During the course of performance laboratory works students master methods of determination of general indicators of quality of foodstuff – humidity, acidity, density, etc. - by their comparative experimental assessment.
The main part of a laboratory practical work is devoted to the analysis of milk and milk canned food. The received results are compared to requirements of standards, the conclusion about quality becomes.
In training process the tabular materials, posters and other visual aids corresponding to scope of the given classes and also technical means of training are used.
Recommendations to students on preparation for occupations
Students are allowed to work in laboratory only later
acquaintance with safety regulations and receipt of instructing that is fixed in the special magazine.
The student needs to be prepared beforehand for a work vykpolneniye, to deeply study the corresponding teoreticheksky material on lectures or textbooks, and also on a laboratorkny practical work, to get acquainted with the specifications and technical documentation on a subject.
At the same time the student shall acquire structure and properties of an izuchayekmy object, essence of biochemical and physical and chemical transformations during engineering procedures of its conversion or obtaining; the work purpose, importance of the indicators determined in work and their influence on quality of the processed raw materials, semifinished products and finished goods, the technique of carrying out a rabokta and the principles which are been the basis for determination of that or ино¬го an indicator, the device of the device or installation.
The questions arising by independent preparation for work, the student shall find out from the teacher conducting a laboratory practical work.
At the beginning of the occupation the teacher by poll finds out readiness of students to work.
The students allowed to work start to its vypolnekniya according to the technique stated in a practical work.
Working in laboratory, students are obliged to follow strictly safety regulations, rules of personal and production hygiene.
All data obtained in a work progress (indications of pribokr, calculations, etc.) are brought in a workbook, processed and entered in the summary final table after which analysis the corresponding conclusions are drawn.
On the next occupation the student hands over to the teacher the oformklenny report (in a workbook) on the performed work.
In the report the work purpose, the short description of the device of devices or installation, detailed calculation of the determined sizes, the analysis of the obtained data and the corresponding conclusions shall be specified. The student protects each performed and arranged work at the teacher and pokluchat offsetting.