COMPARATIVE EVALUATION OF YOGHURT SAMPLES FROM GOATS AND COWS MILK AND COMMERCIAL RETAIL OUTLET

2021 ◽  
Vol 34 (1) ◽  
Author(s):  
V. A. Obatolu ◽  
E. A. Adebowale ◽  
F. Omidokun ◽  
E. O. Farinde
Keyword(s):  
Goat Milk ◽  
Storage Period ◽  
Total Solid ◽  
Cow Milk ◽  
Microbial Count ◽  
Significant Drop ◽  
Overall Acceptability ◽  
Count Range ◽  
Significant Difference ◽  
Mineral Acidity

This paper compared the chemical (Proximate and mineral), acidity, microbial count and organoleptic properties of yoghurt samples produced from Nigeria locally bred goat and cow milk with commercially retail yoghurt during 14days of refrigerated storage. Yoghurt production was conducted by inoculation of the milk samples at 43oC for 6hrs with 2% of streptococcus thermophillus and lactobacillus bulgarus active culture. The total ash content of yoghurt ranges from 0.23g/100g in the commercial yoghurt sample to 0.84g/100g in yoghurt from goat  milk which is considered significantly higher than that observed for yoghurt from cow milk. The commercially retail yoghurt had a significantly higher (P < 0.05) total solid matter than yoghurt from goat and cow milk. Calcium and phosphorus contents were significantly (P < 0.05) lowest in the commercial yoghurt (0.28%) to a significant higher value of 0.28% in goat milk. A statisitically significant drop in pH values was observed in the commercial yoghurt sample after one and two week storage compared to yoghurt from goat and cow milk. High lactic acid bacteria were observed in yoghurt from cow milk with lactococci group being higher than the lactobacilli group throughout the storage period. The yeast count range from a significant low (P < 05) value of 2.22 cfu/ml-1 in commercial yoghurt sample to 3.22 and 3.24 in goat and cow milk respectively on day zero of storage. By the 7days of storage, the commercially retail yoghurt was significant (P < 0.05) least desirable with respect to colour, taste and overall acceptability while there was no significant difference in the consistency of all the yoghurt samples.

scholarly journals Physico-Chemical, Microbiological and Sensory Qualities of Puree Produced From Two Cultivars of Tomato (Lycopersicon esculentum) Under Ambient Storage

2015 ◽  
Vol 4 (2) ◽  
pp. 143
Author(s):  
Olajide E. Adedeji ◽  
Julian C. Anuonye ◽  
Fortune A. Ekundayo ◽  
Taye F. Olaoye ◽  
Abibat O. Babalola ◽  
...  
Keyword(s):  
Storage Period ◽  
Titratable Acidity ◽  
Total Solid ◽  
Commercial Sample ◽  
Physicochemical Composition ◽  
Overall Acceptability ◽  
Ambient Storage ◽  
Physico Chemical ◽  
Significant Difference ◽  
Sensory Qualities

<p>Tomato purees were produced from <em>De Rica </em>and<em> Roma</em> cultivars of tomato, packaged in high density polyethylene and stored at ambient temperature (32±2 ºC). The stored purees were analysed weekly for physicochemical composition, sensory attributes and microbial load until they became unwholesome. There was a significant (p&lt;0.05) falling in Titratable Acidity (TTA) within the first five and six weeks for <em>De Rica</em> and <em>Roma</em> purees respectively. TTA values dropped from 12.43 to 8.40 and 10.69-7.43 for <em>De Rica</em> and <em>Roma</em> purees respectively. Total solid (TS) of the purees decreased significantly (p&lt;0.05) from 16.2% to 9.08% for <em>De Rica</em> puree and 17.89% to 9.99% for <em>Roma</em> puree within the first four weeks of storage and became stable at the later weeks of storage. <em>Roma</em> puree had higher TS throughout the storage period. Total Insoluble Solid of the purees increased significantly from 3.07% and 4.01% for <em>De</em><em> </em><em>Rica</em> puree and 2.3% and 3.44% for <em>Roma</em> puree within the first week of storage. The values however, decreased significantly is (p&lt;0.05) at the second week of storage from 4.01% to 1.19% for <em>De Rica</em> puree and 3.44% to 1.89% for <em>Roma</em> puree. The bulk density of the samples decreased significantly (p&lt;0.05) from 1.14g/ml to 0.95 g/ml for <em>De Rica</em> puree and 1.12 g/ml to 0.95 g/ml for <em>Roma</em> puree through the storage period. There was an insignificant (p&gt;0.05) increase in total bacteria count from 140 CFU/g to 320 CFU/g for <em>De Rica</em> puree and 126 CFU/g to 280 CFU/g for <em>Roma</em> puree within the first two weeks of storage. The values increased significantly (p&lt;0.05) from 640 CFU/g to 137,000 CFU/g for <em>De Rica</em> puree and 590 CFU/g to 122,000 for <em>Roma</em> puree from the third to the tenth week of storage. There was no significant difference (p&gt;0.05) between the freshly produced <em>De Rica</em> puree, <em>Roma</em> puree and the commercial sample in appearance, colour, taste and overall acceptability before and during storage. Marked rejection of the purees was observed at the eight week of storage.</p>

scholarly journals Microbial and Sensorial Quality of Ice Cream Fortified with Oyster (Crassostrea iredalei) Puree

2019 ◽  
Vol 7 (1) ◽  
pp. 295-299 ◽  
Author(s):  
JERSON C. SORIO ◽  
MARIETTA B. ALBINA
Keyword(s):  
Nutritional Value ◽  
Frozen Storage ◽  
Storage Period ◽  
Ice Cream ◽  
Sensory Attributes ◽  
Microbial Count ◽  
Overall Acceptability ◽  
Significant Difference ◽  
Sensorial Quality

Oyster (Crassostreairedalei) are edible bivalve mollusk that contains nutrients that could enhance the nutritional value of dairy products such as ice cream. This study was conducted to determine the microbial and sensorial quality of ice cream fortified with oyster puree at 0% 5%, 10% and 15% concentration during 4 weeks’ frozen storage period. Based on the sensory evaluation results, treatment 2 (10%) obtained the highest overall acceptance mean score of 8.50 (like extremely), but showed no significant difference (p>0.05) with other treatments. The addition of oyster puree did not affect the sensory attributes and the overall acceptability of the products. All treatments were still acceptable on week 4 in terms of sensory attributes. For the basis of microbial analysis, all treatments revealed to have an acceptable microbial count that is below the standard limit of 100,000 CFU/ml (5 log CFU/ml) from week 0 to week 4. Development of ice cream fortified with oyster puree is feasible to increase its nutritional value.

Keeping Quality and Flavor, and Microorganisms, Proteases and Lipases in Raw Cow and Goat Milk at Collection and After Storage

1983 ◽  
Vol 46 (10) ◽  
pp. 873-877 ◽  
Author(s):  
LESTER HANKIN ◽  
DONALD SHIELDS
Keyword(s):  
Protein Degradation ◽  
Goat Milk ◽  
Raw Milk ◽  
Cow Milk ◽  
Coliform Bacteria ◽  
Microbial Count ◽  
Retail Sale ◽  
Milk Samples ◽  
Significant Difference ◽  
Keeping Quality

Raw cow and goat milks for retail sale in Connecticut were examined at collection and after storage at 4.4 and 7.2°C for 7 d for keeping quality, flavor, microorganisms, protein degradation on storage, and protease and lipase activity. Some milks were bottled at the farm, others were placed in containers supplied by the customer. Goat milk retained a satisfactory flavor significantly longer than cow milk. There was no correlation of keeping quality with any microbial count made at collection except for number of coliform bacteria. Significant differences were found in enzyme activity and protein degradation between cow and goat milk. No significant difference was found between milk bottled at the farm and that collected in sterile containers. Over 82% of raw milk samples met the 30,000 per ml state standard for total aerobic count (SPC) and 72% met the coliform standard of 50 per ml.

scholarly journals Physicochemical, Microbial and Sensory Characteristics of Yoghurt Processed by Adding Various Formulations of Gum Arabic and Guar Gum

2020 ◽  
pp. 33-44
Author(s):  
Zakaria A. Salih ◽  
Azhari Siddeeg ◽  
Ammar Al- Farga ◽  
Rasha M. A. Mousa ◽  
S. A. Husam ◽  
...  
Keyword(s):  
Guar Gum ◽  
Storage Period ◽  
Gum Arabic ◽  
Total Solid ◽  
Physicochemical Characteristics ◽  
Sensory Characteristics ◽  
Coliform Bacteria ◽  
Overall Acceptability ◽  
Microbial Characteristics ◽  
Significant Difference

Yoghurt is one of the most popular fermented dairy products widely consumed all over the world. The present study aimed to evaluate the physicochemical, microbial and sensory characteristics of yoghurt produced by added various levels of Gum Arabic and Guar gum (stabilizers). Physicochemical characteristics, microbial characteristics and sensory evaluation of processed yoghurt samples were conducted under laboratory conditions by standard methods. The results showed that yoghurt produced by the addition of Gum Arabic at concentrations (0.2, 0.35, and 0.5%) had less serum separation (1.6, 1.4, and 3.3 ml/l) after 9 days compared with that produced by adding Guar gum (4.5., 3.1., 0.0 ml/lit), respectively, and their mixture (4.3., 6.1. and 3.5 ml/l). Results reported significant differences in pH values (4.9, 4.5, and 3.9) during storage (0, 3, and 9 days), respectively for all types of stabilizers added. The results illustrated significant differences in total solid (7–8%) at different concentrations during the storage period. The study showed no significant difference in stabilizers (Gum Arabic and Guar Gum). The effect of storage on microbial characteristics was determined and the results showed that all microbial characteristics except coliform bacteria showed a significant decrease in the supplemented yoghurt samples compared with those of control yoghurt, while no effect with stabilizer concentration on microbial characteristics. Sensory characteristics (texture, color, and overall acceptability) were significantly improved, while the flavor was not affected with type and concentrations of stabilizers, but affected with storage period. Yoghurt processed with the addition of Gum Arabic had best quality characteristics than yoghurt made with addition Guar gum and a mixture of them. The study recommended doing more researches in rheological, microbial, and sensory characteristics to improve the quality of yoghurt.

Studies on sensory and keeping qualities of pumpkin based Kheer

2015 ◽  
Vol 34 (4) ◽  
Author(s):  
Shaikh Adil ◽  
Sudhakar Changade ◽  
Anant Dhotre ◽  
Santosh Chopde
Keyword(s):  
Shelf Life ◽  
Milk Powder ◽  
Skim Milk ◽  
Storage Period ◽  
Skim Milk Powder ◽  
Overall Acceptability ◽  
Significant Difference ◽  
The Difference ◽  
Shelf Life Studies ◽  
Pumpkin Powder

The objective of this study was evaluation of the shelf life of reconstituted <italic>kheer</italic> packed in previously sterilized cups and stored at 10± 1°C for 3 days. During period of studies the samples were examined for sensory evaluation after the first, second and third day using five treatments T1 (Pumpkin flesh <italic>kheer</italic>), T2 (1 per cent pumpkin powder + 43 per cent skim milk powder), T3 (2 per cent pumpkin powder + 42 per cent skim milk powder), T4 (3 per cent pumpkin powder + 41 per cent skim milk powder) and T5 (4 per cent pumpkin powder + 40 per cent skim milk powder). Samples were studied for sensory properties <italic>viz</italic>. colour, flavour, body texture, appearance and overall acceptability. Statistical analysis for shelf life studies revealed that both the treatments and storage period had significant effect on sensory qualities of the product. The scores for colour, flavour, body and texture, appearance and overall acceptability of all <italic>kheer</italic> samples decreased with the advancement of storage period. The rate of decline in the flavour score of T3 was more as compared to all other treatments. The score for T3 was (7.12) on first day which dropped to (6.05) on third day. The rate of decrease of scores for body and texture was more in treatment T5 than T1, T2, T3 and T4. There was a statistically significant difference in the appearance of reconstituted <italic>kheer</italic> samples for all the treatments on the day of preparation. The difference between all treatments was non-significant on second and third day of storage. The overall acceptability for T1, T2, T3, T4 and T5 samples decreased with the progress of storage period.

scholarly journals The Effect of Packaging Methods on the Shelf-life of Iron Fortified Mozzarella Cheese

2021 ◽  
Author(s):  
M. Raquib ◽  
T. Borpuzari ◽  
M. Hazarika ◽  
S.K. Laskar ◽  
G.K. Saikia ◽  
...  
Keyword(s):  
Shelf Life ◽  
Goat Milk ◽  
Storage Period ◽  
Viable Count ◽  
Vacuum Packaging ◽  
Cow Milk ◽  
Total Viable Count ◽  
Mozzarella Cheese ◽  
Kiwi Fruit ◽  
Treatment Groups

Background: The present study was undertaken to study the effect of different packaging methods on the shelf-life of iron fortified mozzarella cheese prepared from cow milk, goat milk and mixed milk using kiwi fruit extract.Methods: Mozzarella cheese samples were packed both aerobically and under vacuum packaging condition and microbiological load (Total viable count, Escherichia coli, Salmonella, Shigella, Staphylococcus aureus, yeast and moulds and spores count) were monitored throughout the storage period in order to determine its shelf-life. Result: The total viable count (TVC) increased gradually from 0 day till 15 days of refrigerated storage for all the samples of iron fortified mozzarella cheese under both aerobic and vacuum packaging conditions irrespective of the types of milk and enzymes used. Under aerobic packaging condition, highest total viable count was observed for goat’s milk sample in both control and treatment groups all throughout the storage period. Mixed milk iron fortified mozzarella cheese exhibited least count in both the groups. The TVC of all the cheese samples were higher in aerobic packaging compared to vacuum packaging condition. The shelf-life or best before use of the product could judged as 15d from the date of manufacturing.

scholarly journals Physico-chemical and sensory properties of a cheese-like product from the blend of soymilk and almond milk

Agrosearch ◽  
2020 ◽  
Vol 19 (2) ◽  
pp. 54-63
Author(s):  
A.K. Arise ◽  
D.O. Opaleke ◽  
K.O. Salami ◽  
G.V. Awolola ◽  
D.F. Akinboro
Keyword(s):  
Total Solid ◽  
Sensory Properties ◽  
Partial Substitution ◽  
Soy Milk ◽  
Alternative Source ◽  
Overall Acceptability ◽  
Titrable Acidity ◽  
Physico Chemical ◽  
Significant Difference ◽  
Product Control

In this study, the possibility of producing a cheese-like product from the partial substitution of soy milk with almond milk was investigated. The extracted almond milk was mixed with soy milk in a variable proportion of 10:90, 20:80, 30:70, 40:60, 50:50, and the control is soya milk alone (0:100) to produce a cheese-like product. Control and partially substituted cheese-like samples were stored in a refrigerator at a temperature of 4oC and examined for proximate, total titrable acidity, pH, total solid and sensory properties. The total titrable acidity of the cheese was between 0.23% and 0.33%, representing a significant increase in total titrable acidity from 0.23% to 0.33%. The pH increased with increase in the almond milk in the cheese, which varied between 6.45 and 6.90. The proximate composition ranged from 25.67%-29.97% for protein, 22.79%-26.45% for moisture, 30.58%-36.99% for fat, 7.02%-14.61% for carbohydrate, 1.20%-1.79% for ash, and 0.90%-2.03% for fibre. Protein and fat contents increased with increase in almond milk substitution, while carbohydrate and ash content decrease with increasing almond milk substitution. Sensory evaluation revealed a significant difference (p <0.05) in colour, taste, texture and overall acceptability, influenced by the varying proportions of added almond milk. However, there is no significant difference in aroma. The blend with 30% almond milk and 70% soy milk was most acceptable to panelists. The study showed the potential of almond milk as an alternative source of milk in cheese making with improved nutritional value and increased acceptability for the consumer. Keywords: Cheese-like product, Soy-almond Cheese-like, Soy milk, Almond milk

scholarly journals Comparative Studies Of Three Formulated Artificial Litchi Flavored Drinks Under Storage

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Abu Saeid ◽  
Niebaron Kumar Deb ◽  
Eliyas ◽  
Sree Surozit Sarkar ◽  
Milon Debnath ◽  
...  
Keyword(s):  
Storage Period ◽  
Storage Condition ◽  
Quality Parameters ◽  
Sensory Profile ◽  
Storage Duration ◽  
Overall Acceptability ◽  
Significant Difference ◽  
Sensory Parameters ◽  
Assess Quality ◽  
Entire Storage Period

AbstractThe aim to the present study was to formulate of artificial litchi flavored drinks, to assess quality parameters like pH, acidity, TSS and sensory characteristics of three formulated artificial litchi flavored drinks were investigated under 28 days of storage at ambient (30±2°C) temperature. The pH values for all samples varied from 3.53 to 3.65 under the entire storage duration. The acidity found in three different samples ranged from 0.155 to 0.161% under storage condition. The TSS possess among the samples between 15.43 to 16.10° Brix. The sensory profile of three different formulation was evaluated in terms of color, flavor, taste and overall acceptability. The sensory parameters were followed the decreasing trend after end of the storage except sample 3. Although, initially sample 3 found in lowest sensory acceptance but retained the more stable score under the entire storage period which is significantly different (P≤0.05) from other samples. Considering pH, acidity, TSS values under entire storage condition the formulation of sample 3 had shown better results although with few exceptions there was no significant difference (P≤0.05) among the samples. However, end of the study we recommended that, the formulation of sample 3 had better among other sample 1 and sample 2 in terms of quality and cost.

scholarly journals A study of bacterial qualities of raw milk of cow and goat

2020 ◽  
Vol 15 (2) ◽  
pp. 39-49
Author(s):  
U.K. Shukla ◽  
Abhishek Thakre ◽  
Shri Kant
Keyword(s):  
Statistical Analysis ◽  
Specific Gravity ◽  
Comparative Study ◽  
Goat Milk ◽  
Raw Milk ◽  
Total Solid ◽  
Cow Milk ◽  
Chemical Quality ◽  
Quality Of Milk

A comparative study of chemical qualities of raw milk of cow and goat was conducted at Livestock production and management (unit), Department of NRM, faculty of agriculture, MGCGV Chitrakoot – Satna (M.P.) during January, 2020. The objective was to find out the comparative chemical qualities of raw milk of cow and goat for three animal each viz., cow and goat for ten days as replication different parameter were subject to statistical analysis applying the technique of analysis of variance (f-test) the most widely used method for determining protein content by kjeldahi method for nitrogen determination since nitrogen is a characteristic can be finding. In view of the finding and results presented above, it may be concluded that the chemical quality of milk of cow was superior than goat milk, due to higher protein, specific gravity, fat content, lactose, total solid and solid not fat and lower ash and water content in cow milk.

scholarly journals Stability Evaluation of pH-Adjusted Goat Milk for Developing Ricotta Cheese with a Mixture of Cow Cheese Whey and Goat Milk

Foods ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 366 ◽  
Author(s):  
Chung-Shiuan Wu ◽  
Jia-Hsin Guo ◽  
Mei-Jen Lin
Keyword(s):  
Sensory Evaluation ◽  
Cheese Whey ◽  
Goat Milk ◽  
Stability Index ◽  
Cow Milk ◽  
Dairy Goat ◽  
Stability Evaluation ◽  
Product Diversity ◽  
Significant Difference ◽  
The Stability

Excess summer milk and a lack of product diversity are major problems facing Taiwan’s dairy goat industry. Gouda and Mozzarella cheeses made with cow milk are popular products for leisure farms in Taiwan, and they produce a large amount of cheese whey as waste. Our objective is to identify the unstable phenomena of pH-adjusted goat milk through the use of Turbiscan Lab® Expert and to produce ricotta cheeses using cow cheese whey waste and excess goat milk. Delta backscattering (∆BS) profiles and the Turbiscan stability index (TSI) were used to evaluate the stability characteristics of goat milk adjusted to pH 6.7–5.2. The results show coagulation phenomena in skimmed goat milk and sedimentation phenomena in full-fat goat milk, when the pH was adjusted to 5.2. The TSI values of goat milk at pH 5.7 and 5.2 were significantly higher (p < 0.05) than that of a control. Therefore, 80/20 cow cheese whey/skimmed goat milk and 80/20 cow cheese whey/full-fat goat milk mixtures were acidified to pH 5.5 and heated at 90 °C for 30 min to produce ricotta cheeses A and B. The hardness value, moisture, protein, and ash contents of ricotta cheese A were significantly higher (p < 0.05) than that of ricotta cheese B, but no significant difference was found in terms of sensory evaluation.

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