CHANGES IN THE CHEMICAL COMPOSITION OF COWS MILK OF EDUCATIONAL SCIENTIFIC AND PRACTICAL CENTER «STUDENTESKIY» IN AUTUMN

2019 ◽  
Vol 1 (4) ◽  
pp. 382-387
Author(s):  
G.A. Larionov ◽  
◽  
V.G. Semenov ◽  
N.V. Mardaryeva ◽  
◽  
...  
Keyword(s):  
Chemical Composition ◽  
Seasonal Changes ◽  
Dairy Products ◽  
Dairy Product ◽  
Research Work ◽  
Dairy Farm ◽  
Cow’S Milk ◽  
Agricultural Product ◽  
Cow's Milk ◽  
State Agricultural Academy

Cow's milk is the main agricultural product and a valuable raw material for the production of dairy products. During the study the quality of milk, organoleptic, microbiological and chemical indicators are determined. The chemical composition of milk depends on many factors – the breed of cows, feeding, content, age, physiological condition of the animal, season of the year, etc. The chemical composition of raw milk is an important condition in deciding on its further processing for a certain type of dairy product. Modern national and international regulatory documents impose low requirements for the mass fraction of fat and protein in cow's milk – at least 2,8 %. Milk with a minimum content of fat and protein does not allow to obtain products with high yield. To plan the production of dairy products, it is necessary to take into account seasonal changes in the chemical composition. The Chuvash State Agricultural Academy has a small dairy farm. The academy has a training and research laboratory on the technology of milk and dairy products. In the conditions of this laboratory, milk of cows, not only of our academy, but also of personal subsidiary, farm and collective farms are examined. In this regard, it is relevant to conduct research to identify seasonal changes in chemical composition of milk. Our article presents the results of research work on determining the chemical composition of milk of cows in the dairy farm of educational scientific and practical center «Studenteskiy» of the Chuvash State Agricultural Academy in autumn. It was revealed that in September, October and November, the content of fat and protein in milk significantly increases.

CHEMICAL COMPOSITION OF COW'S MILK IN AUTUMN AND WINTER PERIOD

2021 ◽  
Vol 1 (3) ◽  
pp. 274-279
Author(s):  
G.A. Larionov ◽  
◽  
K.D. Egorova ◽  
Keyword(s):  
Chemical Composition ◽  
Dairy Products ◽  
Cow’S Milk ◽  
Winter Period ◽  
Industrial Complex ◽  
Milk Products ◽  
Cow's Milk ◽  
Dry Milk ◽  
Autumn And Winter

Providing high-grade and high-quality dairy products, increasing the amount of milk products produced is an important task of agro-industrial complex. In Russia, dairy products are mainly produced from cow's milk. The quantity and quality of dairy products depends on the composition and properties of milk. During lactation, the chemical composition of milk changes. The article presents the results of studies of the chemical composition of milk of cows in autumn and winter period. It was found that the amount of protein, fat, lactose, dry non-fat milk residue and dry milk residue in cow's milk in autumn and winter increases.

scholarly journals Comparative Characteristics of the Amino Acids Composition of Sheep Milk from Breeds of Northern Kazakhstan

2021 ◽  
Vol 9 (3) ◽  
pp. 980-987
Author(s):  
Aknur Muldasheva ◽  
Gulmira Zhakupova ◽  
Dulat Ibrayev ◽  
Aigul Omaralieva ◽  
Zhuldyz Satayeva
Keyword(s):  
Chemical Composition ◽  
Dairy Products ◽  
Milk Protein ◽  
Genetically Modified Organisms ◽  
Milk Powder ◽  
Soviet Period ◽  
Cow’S Milk ◽  
Lactation Period ◽  
Cow's Milk ◽  
Sheep Milk

Kazakhstan is characterized by a wide variety of natural, climatic, economic, and ethnic factors that have a specific impact on the development of sheep farming. The production of dairy products from sheep is limited due to the low productivity of animals and the seasonality of milk production throughout the year, as well as the short lactation period. Also, one of the problems is manual milking of sheep, which does not allow obtaining sheep milk on an industrial scale. The market of dairy products, currently in the Republic of Kazakhstan is represented only by-products made from cow's milk, and at the same time, most of them are products made from cow's milk powder, so the development of products made from sheep's milk is an urgent task. In addition, sheep's milk is a national product, and one of the tasks is to revive the traditional products of the Kazakh people. The analysis of literature studies shows that in-depth studies of the chemical composition of sheep's milk have not been conducted in Kazakhstan. The chemical composition data obtained during the Soviet period only give an idea of the primary chemical parameters obtained by generally accepted basic methods and do not provide reliable information about the deep chemical composition of the milk of local ewes. According to the results of studies, the content of the essential amino acid valine in cow's milk (0.21 g/100g) is also lower than in sheep's milk (9.69-3.79 g/100g). Sheep's milk protein is digested in the human body by 99.1%, and cow's milk protein by 91.9%. According to world experts, one of the advantages of Kazakhstan's domestic milk products is its naturalness, a low share of the use of genetically modified organisms, and environmentally friendly pastures, due to which they receive high-quality and safe products. Therefore, the designated research topic and its analysis are appropriate and relevant.

scholarly journals Cow's Milk and Dairy Consumption: Is There Now Consensus for Cardiometabolic Health?

2020 ◽  
Vol 7 ◽  
Author(s):  
Sally D. Poppitt
Keyword(s):  
Dairy Products ◽  
Fat Content ◽  
Animal Origin ◽  
Cow’S Milk ◽  
Cardiometabolic Health ◽  
Inverse Association ◽  
Low Fat ◽  
Cow's Milk ◽  
Positive Effects ◽  
Dairy Consumption

Cow's milk and dairy products derived from this complex food source have long been proposed as beneficial to human health, yet underlying clinical evidence of direct benefit continues to raise controversy. Limited evidence supports positive cardiometabolic effects of a number of dairy macro- and micronutrient components including whey protein and casein, unsaturated fats, milk fat globule membrane (MFGM) and polar phospholipids, vitamin D and calcium, in addition to non-bovine components including bacterial and yeast probiotics. More controversial remain lipid components trans fats, including trans vaccenic acid, trans palmitoleic acid, and conjugated cis trans linoleic acid (CLA), plus medium-chain and odd-chain dairy fats. New evidence is rapidly identifying multiple pathways by which these dairy nutrients may effect health. Processing, including fermentation and homogenization, may also have positive effects. Conversely, the high saturated fat content of dairy has long raised concern, aligned with international guidelines to minimize dietary intake of animal-origin saturated fatty acids (SFA) to achieve better cardiometabolic health. However, led in part by observational studies and meta-analyses showing dairy to have no or even an inverse association with cardiometabolic health, evidence from randomized controlled trials (RCTs) has been scrutinized over the last 5 years, and focus on low-fat dairy has been challenged. Recent evidence supports the hypothesis that adverse effects of SFAs on metabolic health may be ameliorated when these fats are consumed within a complex matrix such as milk, cheese or yogurt, and that dairy food categories may influence outcomes as much as total fat content. For example, yogurt and high-fat, high-SFA cheese have a negative association with risk of type 2 diabetes (T2D) in many, not all, published trials. However, large sample dairy RCTs of long duration with CVD or T2D incidence as primary endpoints are lacking. This is a clear research gap, with these clinical studies required if a causative link between dairy and improved cardiometabolic health is to be confirmed and in turn promoted through dietary guidelines. Current advisories from national guidance groups such as American Heart Association (AHA) and European Society of Cardiology (ESC) continue to promote consumption of low-fat dairy products, whilst liquid milk and yogurt remain part of nutrition guidelines from joint American Diabetes Association (ADA)/European Association for Study of Diabetes (EASD) reports, and as part of a “no-one-size-fits-all” answer to diet and T2D by the ADA in their most recent 2019 Consensus Report.

scholarly journals Determination of whey proteins in different types of milk

2014 ◽  
Vol 83 (1) ◽  
pp. 67-72 ◽  
Author(s):  
Lenka Ruprichová ◽  
Michaela Králová ◽  
Ivana Borkovcová ◽  
Lenka Vorlová ◽  
Iveta Bedáňová
Keyword(s):  
High Performance ◽  
Dairy Product ◽  
Whey Proteins ◽  
Reversed Phase ◽  
Cow’S Milk ◽  
Cow's Milk ◽  
Goat’S Milk ◽  
Different Types ◽  
Goat's Milk ◽  
Β Lactoglobulin

Protein analysis is very important both in terms of milk protein allergy, and of milk and dairy product adulteration (β-lactoglobulin may be an important marker in the detection of milk adulteration). The aim of this study was to detect major whey proteins α-lactalbumin and β-lactoglobulin and their genetic variants by reversed-phase high-performance liquid chromatography. Milk samples from cows (n = 40), goats (n = 40) and sheep (n = 40) were collected at two farms and milk bars in the Czech Republic from April to June 2010. The concentration of α-lactalbumin was higher in goat’s milk (1.27 ± 0.05 g·l-1, P < 0.001) and cow’s milk (1.16 ± 0.02 g·l-1, P = 0.0037) compared to sheep’s milk (0.95 ± 0.06 g·l-1); however, concentration of α-lactalbumin in goat’s milk and cow’s milk did not differ significantly (P < 0.05). Goat’s milk contained less β-lactoglobulin (3.07 ± 0.08 g·l-1) compared to cow’s milk (4.10 ± 0.04 g·l-1, P < 0.001) or sheep’s milk (5.97 ± 0.24 g·l-1, P < 0.001). A highly significant positive correlation (r = 0.8686; P < 0.001) was found between fraction A and B of β-lactoglobulin in sheep’s milk, whereas in cow’s milk there was a negative correlation (r = -0.3010; P = 0.0296). This study summarizes actual information of the whey protein content in different types of milk which may be relevant in assessing their allergenic potential.

Quantification of cow’s milk percentage in dairy products – a myth?

2012 ◽  
Vol 403 (10) ◽  
pp. 3031-3040 ◽  
Author(s):  
Helmut K. Mayer ◽  
J. Bürger ◽  
N. Kaar
Keyword(s):  
Dairy Products ◽  
Cow’S Milk ◽  
Cow's Milk

Maternal consumption of dairy products during pregnancy and lactation, and the development of cow's milk antibodies in the offspring

2007 ◽  
Vol 94 (6) ◽  
pp. 696-704
Author(s):  
Maijaliisa Erkkola ◽  
Carina Kronberg-Kippilä ◽  
Erkki Savilahti ◽  
Michael G Kenward ◽  
Marja Salonen ◽  
...  
Keyword(s):  
Dairy Products ◽  
Cow’S Milk ◽  
Cow's Milk ◽  
Pregnancy And Lactation ◽  
Maternal Consumption ◽  
Milk Antibodies

scholarly journals Monitoring of fatty farming corives of extreme dairy pores of Ukraine

2019 ◽  
Vol 24 ◽  
pp. 75-79
Author(s):  
Z. V. Yemets ◽  
A. M. Mamenko ◽  
O. S. Miroshnikova
Keyword(s):  
Mathematical Analysis ◽  
Milk Fat ◽  
Dairy Products ◽  
Genetic Factors ◽  
Fat Content ◽  
Animal Research ◽  
Cow’S Milk ◽  
Cow's Milk ◽  
Reverse Trend

Aim. The “breed” was used as one of the genetic factors and as a result the genetic and mathematical analysis of fat content on cow’s milk and the output of milk fat depending on the origin mainly in Kharkiv region have been carried out. Methods. Studies were performed on materials pedigree registered in Kharkiv region agribusinesses and farms in Institute of Animal research, NAAN of Ukraine, on the cows of Ukrainian red and pockmarked and black and pockmarked breed. Results. The highest fatty dairy products are distinguished by animals of the Ukrainian red- and pockmarked milk breed (3.9 %), while the cows of Ukrainian black- and pockmarked milk are lower (3.81 %). As for the milk fat, there is a reverse trend, the cows of Ukrainian black- and pockmarked milk breed have a higher yield of milk fat in milk (167.4 kg) than cows of Ukrainian red -and- pockmarked milk (161.6 kg). Conclusions. The fat content in the milk of Ukrainian red -and- pockmarked currant dairy breeds is 3.9 %, while the cows of Ukrainian black- and pockmarked milk breed 3.81 %. The yield of milk fat from cows of the Ukrainian black- and pockmarked milk was 167.4 kg, while in cows of Ukrainian red- and pockmarked breed 161.6 kg. The "breed" factor has a significant (P > 0.999). Keywords: вlack- and pockmarked, red- and pockmarked, breed, factors, milk.

scholarly journals Study of the effect of high-frequency acoustic cavitation on the quality of raw milk and dairy products based on it

2019 ◽  
Vol 81 (3) ◽  
pp. 145-150
Author(s):  
K. A. Kanina ◽  
O. N. Krasulya ◽  
N. A. Zhizhin ◽  
E. S. Semenova
Keyword(s):  
High Frequency ◽  
Dairy Products ◽  
Raw Materials ◽  
Acoustic Cavitation ◽  
Raw Milk ◽  
Raw Material ◽  
Coliform Bacteria ◽  
Cow’S Milk ◽  
Cow's Milk

The article presents the results of studies obtained in the study of the quality of milk processed with the use of high-frequency acoustic cavitation and dairy products produced with its use. The research was carried out with the use of General scientific and special research methods in the laboratory of the Department of technology of storage and processing of animal products of the K. A. Timiryazev and in the accredited laboratory of technochemical control of the all-Russian research Institute of dairy industry. It is shown that the treatment of cow's milk-raw materials high-frequency ultrasonic vibrations (above 45 kHz), the generated electric ultrasonic device immersion type pulse impact ouzo "Activator-150", the number of bacteria of group of intestinal sticks (coliforms) decreased by almost 40%, which allows to make a conclusion about the appropriateness of the selected method of exposure for the destruction of microorganisms E. coli and coliform bacteria. Processed, using high-frequency acoustic cavitation, cow's milk was used for the production of brine cheese-cheese. It is shown that cheese cheese had a high nutritional value, which is due to the preservation of essential substances in the raw material (in particular, calcium, which in the production of cheese cheese precipitates if pasteurized milk is used), elastic consistency, safety of consumer characteristics - microbiological and physico-chemical.

Variations in cows’ plasma and milk carotenoid concentrations following changes in carotenoid intake level

2007 ◽  
Vol 2007 ◽  
pp. 188-188
Author(s):  
F.C. Calderón ◽  
B. Ch Chauveau-Duriot ◽  
P.P. Pradel ◽  
B.M. Martin ◽  
S.P. Prache ◽  
...  
Keyword(s):  
Immune Function ◽  
Dairy Products ◽  
Cell Communication ◽  
Provitamin A ◽  
Cow’S Milk ◽  
Cow's Milk ◽  
Feeding Management ◽  
Management Review ◽  
Intake Level ◽  
Animal Feeding

Dairy products composition and quality are strongly influenced by the nature of the diet fed to cows, including their composition in micronutrients, among them carotenoids. These compounds are pigments that develop provitamin A and antioxidant functions, take part in the maintenance of cell communication, enhance the immune function, and UV skin and macula protection (Van den Berg et al., 2000). In dairy products, besides to having nutritional and sensorial properties, they have been recognized as tracer compounds indicating animal feeding management (review of Nozière et al., 2006). Factors controlling their concentration in cow’s milk must therefore be highlighted. The aim of this study was to determine the variation in plasma and milk carotenoids concentrations when cows shifted from a low-carotenoid diet to diets containing various levels of carotenoids.

scholarly journals Buffalo mozzarella chemical composition and authenticity assessment by electrophoretic profiling

2017 ◽  
Vol 38 (4) ◽  
pp. 1841
Author(s):  
Ben-Hur Ramos Ferreira Gonçalves ◽  
Grazielly De Jesus Silva ◽  
Daniele Gomes Conceição ◽  
Antonio Silvio do Egito ◽  
Sibelli Passini Barbosa Ferrão
Keyword(s):  
Chemical Composition ◽  
Electrophoretic Analysis ◽  
Physicochemical Characteristics ◽  
Buffalo Milk ◽  
Water Soluble ◽  
Cow Milk ◽  
Cow’S Milk ◽  
Cow's Milk ◽  
Sds Page

Buffalo milk mozzarella is often adulterated by the addition of cow’s milk. The aim of this study was to assess the quality of buffalo milk mozzarella by using electrophoresis (SDS-PAGE) to detect the addition of cow’s milk. Reference cheeses were produced exclusively from combinations of buffalo and cow milk, and labeled reference treatment buffalo or cow (RTB and RTC, respectively). Standardized cheeses were made by combining buffalo milk and 2.5%, 5.0%, 10%, 20%, 30%, 40% or 50% cow’s milk. A total of 9 cheese formulations were produced and either frozen immediately (time 0) or after 20 days (time 20). Eighteen commercial samples of buffalo mozzarella were sampled between 0–20 days of production. The chemical composition (moisture, ash, fat in dry matter, protein, total solids and defatted dry extract) and physicochemical characteristics (acidity) of the cheeses were evaluated. Proteins and water-soluble peptides (WSP) extracted from RTB, RTC and from the commercial samples, and were analyzed by SDS-PAGE electrophoresis under denaturing conditions. It was not possible to detect the inclusion of cow’s milk by the cheeses’ chemical and physicochemical properties. However, the separation and detection of peptide and protein fractions of the cheese was possible by electrophoresis. The results of the electrophoretic analysis suggest that 28% of the commercial samples considered here had evidence of the addition of cow’s milk. The methodology described here is important to identify occurrences of fraud in buffalo mozzarella production.

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