scholarly journals Fresh cheese production on the basis of milk-protein coaggregates

2004 ◽  
Vol 20 (1-2) ◽  
pp. 119-129 ◽  
Author(s):  
Ognjen Macej ◽  
Snezana Jovanovic ◽  
Sanja Seratlic ◽  
Miroljub Barac
Keyword(s):  
Total Nitrogen ◽  
Milk Fat ◽  
Fat Content ◽  
Total Solids ◽  
Fresh Cheese ◽  
Cheese Curd ◽  
Solids Content ◽  
And Control ◽  
Cheese Production ◽  
Control Samples

Two variants of fresh cheese were prepared: cheese prepared from milk heated at 650C for 30 minutes (control samples) and those prepared from milk heated for 10 minutes at 850C (experimental samples). Second method caused the protein co aggregates formation. Results of these investigations suggested that the whey obtained during fresh cheese production from co aggregates had considerable lower total nitrogen content (0.0601%) and milk fat content (0.08%). These values represented 46.37% and 33.33% of the control samples respectively. Also, dry matter of experimental whey samples was lower for 3.72% than in the whey of control samples. The cheese prepared on the basis of co aggregates had for 5.11% lower total solids content than control samples. The average values of these and control samples were 28.38% and 33.49% respectively. This may be due to protein co aggregates properties and the different structure of cheese curd. Disregarding to the higher utilization of the milk fat, the lower milk fat content in total solids content of experimental cheese is the result of higher participation of total nitrogen.

scholarly journals The chemical composition and technological properties of milk obtained from the morning and evening milking

2008 ◽  
Vol 56 (5) ◽  
pp. 187-198 ◽  
Author(s):  
Martin Skýpala ◽  
Gustav Chládek
Keyword(s):  
Protein Content ◽  
Milk Yield ◽  
Milk Fat ◽  
Protein Production ◽  
Milk Protein ◽  
Fat Content ◽  
Total Solids ◽  
Milk Protein Content ◽  
Solids Content ◽  
Morning Milk

Milk yield varies during lactation, following what is termed a lactation curve. ŽIŽLAVSKÝ and MIKŠÍK (1988) recorded changes in milk yield within a day, too. TEPLÝ et al. (1979) a KOUŘIMSKÁ et al. (2007) published variation within a day ± 1.10 kg in milk yield, ± 0.75 % in milk fat content and ± 0.20 % in milk protein content. Milk yield of cows can be expressed in many different ways, for instance, in kilograms per lactation or in kilograms per day. A practical parameter describing milk production is milk yield (kg) per milking.The object of experiment were 12 cows of Holstein cattle on the first lactation from the 100-day of lactation to 200-day of lactation. The samples of milk were collected from January to May 2007, once a month from the morning and evening milking (milking interval 12 h ± 15 min.). The following parameters were monitored: milk production – milk yield (kg), milk protein production (kg), milk fat production (kg); milk composition – milk protein content (%), milk fat content (%), lactose content (%), milk solids-not-fat content (%), milk total solids content (%); technological properties of milk – ti­tra­tab­le acidity (SH), active acidity (pH), rennet coagulation time (s), quality of curd (class) and somatic cell count as a parameter of udder health.Highly significant differences were found (P < 0.01) between morning milk yield (15.7 kg) and evening milk yield (13.8 kg), between morning milk protein production (0.51 kg) and evening milk protein production (0.45 kg) and between evening milk fat content (4.41 %) and morning milk fat content (3.95 %). A significant difference (P < 0.05) was found between morning milk total solids content (12.62 %) and evening milk total solids content (12.07 %). No significant differences were found between morning (M) and evening (E) values of the remaining parameters: milk fat production (M 0.62 kg; E 0.60 kg), milk protein content (M 3.24 %; E 3.27 %), milk lactose content (M 4.78 %; E 4.86 %), milk solids-not-fat content (M 7.69 %; E 7.71 %), somatic cell count (M 80 000/1 mL; E 101 000/1 mL), titratable aci­di­ty (M 7.75 SH; E 7.64 SH), active acidity (M pH 6.58; E pH 6.61), rennet coagulation time (M 189 s.; E 191 s.), quality of curd (M 1.60 class; E 1.57 class).

scholarly journals Effects of ruminal pH and subacute ruminal acidosis on milk yield and composition of Holstein cows in different stages of lactation

2019 ◽  
Vol 70 (2) ◽  
pp. 1551
Author(s):  
G. C. KITKAS ◽  
G. E. VALERGAKIS ◽  
M. KRITSEPI-KONSTANTINOU ◽  
A. I. GELASAKIS ◽  
G. ARSENOS ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Milk Fat ◽  
Rumen Fluid ◽  
Fat Content ◽  
Field Conditions ◽  
Subacute Ruminal Acidosis ◽  
Total Solids ◽  
Ruminal Acidosis ◽  
Solids Content

Subacute ruminal acidosis (SARA; implying a rumen fluid pH between 5.5 and 5.0), is one of the most important metabolic diseases of dairy cows. In this study, the effect of SARA and rumen fluid pH on milk yield and composition was assessed in dairy cows under field conditions, with repeated measurements in the same cows, at different stages of lactation. Rumenocentesis was performed in 83 Holstein cows of a commercial herd at 30, 90, and 150 days in milk (DIM). Rumen fluid pH was measured on-site using a portable pH-meter. Milk yield was also recorded at the same days. Milk samples were analyzed for fat, protein, lactose and total solids content. For the statistical analysis, mixed linear regression models were used. Prevalence of SARA was 48.2%, 53.8% and 65.3% at 30, 90 and 150 DIM, respectively. There was a significant negative effect of SARA and decreased rumen fluid pH on milk fat content; SARA was associated with a decrease of milk fat content by 0.22%, while a one-unit increase of rumen fluid pH, even within the normal range, was associated with a 0.28% increase of milk fat content and 0.44% increase of milk total solids content. There was no effect of SARA on milk yield or protein, lactose and total solids content. In conclusion, under field conditions, SARA and decreased rumen fluid pH reduce milk fat content.

scholarly journals Quality of raw milk collected from Mymensingh town in Bangladesh

2016 ◽  
Vol 45 (2) ◽  
pp. 73-78 ◽  
Author(s):  
MS Uddin ◽  
MR Habib ◽  
MA Islam ◽  
S Afrin ◽  
MH Rashid
Keyword(s):  
Specific Gravity ◽  
Milk Fat ◽  
Raw Milk ◽  
Fat Content ◽  
Chemical Parameters ◽  
Total Solids ◽  
Milk Samples ◽  
Negative Results ◽  
Different Sources

The present study was conducted to know the chemical qualities and adulteration of fresh raw milk collected from local markets (Bhangnamari bazaar, Sutiakhali bazaar, Vabokhali bazaar, Shombhuganj bazaar and Mymensingh sadar bazaar) of Mymensingh sadar, Bangladesh. Milk samples were analyzed for chemical parameters (contents of acidity, total solids, solids-not-fat, fat, protein and ash) and adulteration (presence of formalin, sugar or starch). Also, lactometer reading was recorded to monitor the specific gravity of the collected milk samples. Result showed that the specific gravity of milk from different sources differed non-significantly. The total solids, fat and protein contents of all the samples were in normal range except the milk fat content collected from Shombhuganj bazaar (32.66±4.04 g/Kg) and Mymensingh sadar bazaar (30.66±4.51 g/Kg) which had less (p<0.01) than the minimum legal standard of milk fat (35.00 g/Kg). The solids-not-fat content of the milk samples collected from Bhangnamari bazaar (72.93±8.78 g/Kg) and Vabokhali bazaar (79.33±6.81 g/Kg) were less than that from Mymensingh sadar bazaar (95.67±11.72 g/Kg). Developed acidity was detected in the samples from Bhangnamari bazaar (0.180±0.03), Sutiakhali bazaar (0.187±0.04%) and Mymensingh sadar bazaar (0.180±0.02%), while other samples were found to the fresh (0.150-0.157%). All of the adulteration tests showed negative results. The results suggested that though there were some fluctuations in quality among the bazaars regarding the standard of parameters, the raw milk samples were of acceptable quality.Bang. J. Anim. Sci. 2016. 45 (2): 73-78

Development of fresh cheese made from coconut milk in combination with cow’s milk

2017 ◽  
Vol 119 (10) ◽  
pp. 2183-2193 ◽  
Author(s):  
Tatsawan Tipvarakarnkoon ◽  
Sangrawee Sornsa-ard ◽  
Wutcharee Imcha
Keyword(s):  
Fat Content ◽  
Coconut Milk ◽  
Cottage Cheese ◽  
Cow’S Milk ◽  
Process Conditions ◽  
Content Type ◽  
Cow's Milk ◽  
Different Types ◽  
Fresh Cheese ◽  
Cheese Curd

Purpose The purpose of this paper is to develop fresh cheese made from different types of coconut milk (fresh, UHT, and reconstituted coconut milk) mixed with pasteurized cow’s milk (50:50) by rennet coagulation. The main aim of this study was to achieve successful formation of cheese curd with fully coconut milk aroma and flavor. Design/methodology/approach Fresh cheese made from different types of coconut milk mixed with cow’s milk (50:50) were developed and compared to fresh cheese made from cow’s milk (100:0). Physicochemical analysis including pH, acidity, percentage of yield, protein and fat content, texture analysis and sensory evaluation has been performed. The nine-point hedonic preference test (n=35) and consumer testing (n=235) were conducted. Findings In comparison, fresh cheese made with the presence of coconut milk (50:50) had higher fat content, lower crude protein content, higher firmness, and adhesiveness than those made from cow’s milk alone (0:100). The cheese with the presence of coconut milk was liked better by consumers (7.35 out of 9). Rehydrated coconut milk was mostly preferred to use among all three types of coconut milk which showed firmer texture and admired flavor. The texture of the developed product was proved to be similar to commercial cottage cheese. Using the rehydrated coconut milk in the formulation gave successful results for making fresh coconut milk cheese, which has also not been used previously in any research. Research limitations/implications In this paper, the effect of process conditions on the quality of cheese curd formation was not yet investigated and discussed. The process parameters including heat treatment and renneting time should be further studied. Originality/value A novel fresh cheese made from coconut milk mixed with pasteurized cow’s milk was successfully developed. The cheese curd was formed with fully coconut milk aroma and flavor.

372. Control of the moisture content and ‘body-firmness’ of cheddar cheese

1948 ◽  
Vol 15 (3) ◽  
pp. 387-397 ◽  
Author(s):  
H. R. Whitehead
Keyword(s):  
Moisture Content ◽  
Milk Fat ◽  
Cheddar Cheese ◽  
Fat Content ◽  
Cooking Temperature ◽  
Cheese Curd ◽  
Jersey Cows ◽  
Friesian Cows

Cheesemaking experiments were carried out to investigate the moisture-retaining characteristics of curd made from milks of varying fat and casein content. The results indicate:(a) That milk fat helps to retain moisture in a cheese curd. The higher the proportion of fat present the more drastic the treatment required in the cheese vat to reduce the moisture content of the finished cheese to the desired level. A higher cooking temperature, more dry-stirring of the curd and a larger proportion of salt are all necessary with rise in fat content of the curd.(b) That curd formed from milk of a low-casein content (from Friesian cows) retains moisture in the cheesemaking process more tenaciously than curd from milk of a highcasein content (from Jersey cows).

scholarly journals An 11-bp Indel Polymorphism within the CSN1S1 Gene Is Associated with Milk Performance and Body Measurement Traits in Chinese Goats

Animals ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1114 ◽  
Author(s):  
Yanghai Zhang ◽  
Ke Wang ◽  
Jinwang Liu ◽  
Haijing Zhu ◽  
Lei Qu ◽  
...  
Keyword(s):  
Milk Fat ◽  
Freezing Point ◽  
Bone Development ◽  
Fat Content ◽  
Dairy Goat ◽  
Body Measurement ◽  
Indel Polymorphism ◽  
Body Measurement Traits ◽  
Milk Performance ◽  
Solids Content

The casein alpha s1 (CSN1S1) gene encodes α-s1 casein, one of the proteins constituting milk, which affects milk performance, as well as improving the absorption of calcium and bone development in mammals. A previous study found that an 11-bp insertion/deletion (indel) of this gene strongly affected litter size in goats. However, to our knowledge, the relationships between this polymorphism and the milk performance and body measurement traits of goats have not been reported. In this paper, the previously identified indel has been recognized in three Chinese goat breeds, namely the Guanzhong dairy goat (GZDG; n = 235), Shaanbei white cashmere goat (SBWC; n = 1092), and Hainan black goat (HNBG; n = 278), and the following three genotypes have been studied for all of the breeds: insertion/insertion (II), deletion/deletion (DD), and insertion/deletion (ID). The allele frequencies analyzed signified that the frequencies of the “D” allele were higher (47.8%–65.5%), similar to the previous report, which indicates that this polymorphism is genetically stable in different goat breeds. Further analysis showed that this indel was markedly associated with milk fat content, total solids content, solids-not-fat content, freezing point depression, and acidity in GZDG (p < 0.05), and also affected different body measurement traits in all three breeds (p < 0.05). The goats with II genotypes had superior milk performance, compared with the others; however, goats with DD genotypes had better body measurement sizes. Hence, it may be necessary to select goats with an II or DD genotype, based on the desired traits, while breeding. Our study provides information on the potential impact of the 11-bp indel polymorphism of the CSN1S1 gene for improving the milk performance and body measurement traits in goats.

scholarly journals Quality of Milk for Cheese Production on Registered Agricultural Holdings in Vojvodina

2017 ◽  
Vol 66 (3-4) ◽  
pp. 32-37
Author(s):  
Anka Popović Vranješ ◽  
Saša Krstović ◽  
Anka Kasalica ◽  
Želјka Jurakić ◽  
Ljuba Štrbac ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Rural Development ◽  
Milk Fat ◽  
Microbiological Quality ◽  
Fat Content ◽  
Plate Count ◽  
Sheep Milk ◽  
Quality Of Milk ◽  
Cheese Production

Summary Currently, milk producers in Vojvodina on registered agricultural holdings (RAHs) have great experience and knowledge in managing their farms, including primary production, processing and sales. However, for a smaller number of manufacturers, there is still room for organizational and technological improvement of production. Nowadays, goat breeding is a very important part of sustainable production, rural development, and represents a very important part of rural development and employment of people. The course of goat breeding in our country is milk-meat, where milk is usually a priority. For the successful production of cheese, the quality of raw milk plays a critical role. It affects the quality of cheese in terms of a chemical composition, microbiological quality, the presence of chemical residues and organoleptic properties. Cheese is mostly made from cow, goat and sheep milk. The valuable components of milk are proteins and fats. These can also be defined as parameters of utilization, since they indicate how much cheese can be obtained from milk. On average, cow milk contains 3.64% fat, 3.22% protein, and 8.52% non-fat dry matter (NFDM). Higher differences in milk fat content (minimum 3.25%, maximum 4.36%) were found in milk from RAHs. Recently, the production of milk with higher fat content has become important, since in Serbian milk there is not enough milk fat, so some processors are obliged to import it in the form of butter and cream. In addition to the chemical composition, the microbiological quality of milk is important to maintain successful cheese production. Regarding our findings, the standard plate count (SPC) and the somatic cell count (SCC) in samples from most RAHs did not exceed the values specified in Regulation (EC) 853/2004. Moreover, goat and sheep milk was in agreement with the technological quality of milk for cheese production, in terms of chemical composition.

Digestive utilization of goat and cow milk fat in malabsorption syndrome

2001 ◽  
Vol 68 (3) ◽  
pp. 451-461 ◽  
Author(s):  
M. J. M. ALFÉREZ ◽  
M. BARRIONUEVO ◽  
I. LÓPEZ ALIAGA ◽  
M. R. SANZ-SAMPELAYO ◽  
F. LISBONA ◽  
...  
Keyword(s):  
Olive Oil ◽  
Milk Fat ◽  
Goat Milk ◽  
Fat Content ◽  
Malabsorption Syndrome ◽  
Cow Milk ◽  
Standard Diet ◽  
Distal Small Intestine ◽  
Normal Ranges ◽  
And Control

We studied the effects of goat and cow milk fat on the digestive utilization of this nutrient and on some of the biochemical parameters that are related to the metabolism of lipids, using rats with a resection of 50% of the distal small intestine and control animals (transected). The fat content in all the diets was 10% but the lipid quality was varied: the standard diet was based on olive oil, while the other two diets included fat obtained from lyophilized goat milk and cow milk, respectively. The digestive utilization of the fat was lower in the resected animals than in the transected ones for all three diets studied. In both resected and transected animals, the apparent digestibility coefficient (ADC) of the fat was greater with the standard diet (olive oil) than with diets whose fat content was provided by goat or cow milk. The digestive utilization of the fat was greater in the transected and resected rats receiving a diet of goat's milk (rich in medium-chain triglycerides) than those given a cow-milk-based diet, and more closely approached the values obtained for olive oil. The consumption of goat milk reduced levels of cholesterol while levels of triglycerides, HDL, GOT and GPT remained within the normal ranges, for both transected and resected animals. The advantageous effect of goat milk on the metabolism of lipids with respect to cow milk suggests that the former should be included in the diet in cases of malabsorption syndrome.

Selection potential for tuber total nitrogen and total solids content in a tetraploid breeding population

1971 ◽  
Vol 48 (11) ◽  
pp. 428-437 ◽  
Author(s):  
L. L. Sanford ◽  
T. J. Fitzpatrick ◽  
W. L. Porter
Keyword(s):  
Total Nitrogen ◽  
Breeding Population ◽  
Total Solids ◽  
Solids Content

scholarly journals The effect of processing parameters on the structure of fermented milk products with transglutaminase addition

2013 ◽  
pp. 67-74 ◽  
Author(s):  
Mirela Ilicic ◽  
Spasenija Milanovic ◽  
Katarina Kanuric ◽  
Vladimir Vukic ◽  
Dajana Hrnjez
Keyword(s):  
Milk Fat ◽  
Starter Culture ◽  
Fermented Milk ◽  
Processing Parameters ◽  
Fat Content ◽  
Milk Products ◽  
Loop Area ◽  
Hysteresis Loop Area ◽  
Control Samples ◽  
Fermented Milk Products

This study is concerned with the effect of concentration of transglutaminase (TG), content of milk fat and starter culture type (probiotic and kombucha) on the structure of fermented milk products. The application of TG significantly improved textural characteristics of the fermented milk products. The firmness of the samples produced from milk with 0.1g100g-1 and 0.9g100g-1 fat content with probiotic starter were by 33% and 17.6% higher, respectively, compared to the control samples. During ten days of storage, the value of the hysteresis loop area of all samples produced from milk with 0.9g100g-1 fat content with TG addition, decreased by 14%.

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