Physicochemical, microbiological and sensory properties of Sudanese yoghurt (zabadi) made from goat's milk

2011 ◽  
Vol 51 (1) ◽  
pp. 53 ◽  
Author(s):  
Eshraga A. Eissa ◽  
Elfadil E. Babiker ◽  
Abu ElGasim A. Yagoub
Keyword(s):  
Goat Milk ◽  
Storage Period ◽  
Cow Milk ◽  
Faecal Coliforms ◽  
Salmonella Spp ◽  
Fresh Milk ◽  
Goat’S Milk ◽  
Goat's Milk ◽  
Lactobacillus Spp ◽  
Total Bacteria

Physicochemical, microbiological and sensory attributes of fresh and cold-stored (5–15 days) fermented zabadi from goat’s milk were analysed and then compared with those of cow’s milk. Results indicated that the gross nutrients of fresh goat’s milk changed after processing. Zabadi fermentation significantly decreased the lactose content and pH of the fresh milk in both zabadi types. Cow-milk zabadi was more viscous than goat-milk zabadi. Cold storage resulted in significant changes in gross composition of both zabadi types, in particular after 10 days of storage. Lactose and pH decreased further if the storage period was prolonged. Lactobacillus spp. and Streptococcus spp. are the main active organisms in goat- and cow-milk zabadi. The number of total bacteria and yeast increased significantly within 10 days of storage, decreasing thereafter. Staphylococcus aureus and Salmonella spp. were absent. Coliforms and faecal coliforms were detected in both zabadi types; however, they disappeared after 5 days of storage. Goat-milk zabadi showed significantly lower sensory scores than cow-milk zabadi. Both zabadi types can withstand storage to a maximum of 10 days, with the sensory scores decreasing thereafter.

scholarly journals Efek Pemberian Starter Kefir dengan Level yang Berbeda pada Pembuatan Kefir Susu Kambing dan Susu Sapi terhadap Volume dan Kualitas Whey Kefir yang Dihasilkan

2020 ◽  
Vol 20 (2) ◽  
Author(s):  
Luki Amar Hendrawati
Keyword(s):  
Experimental Design ◽  
Block Design ◽  
Scientific Information ◽  
Goat Milk ◽  
Cow Milk ◽  
Cow’S Milk ◽  
Cow's Milk ◽  
Goat’S Milk ◽  
Goat's Milk ◽  
Different Levels

Whey kefir is an isotonic drink with good quality, because it is most suitable for human and animal body fluids. Scientific information relating to the use of whey through the fermentation process using a kefir starter to see the functional benefits of antihypertensive has not been widely published, therefore this research is important to do. So that they can know and learn the quality of kefir whey against antioxidant and mineral content. This study aims to determine the volume of kefir whey from goat's milk and cow's milk produced by giving different levels of kefir starter. The method used is an experimental study that uses two factors, namely comparing whey kefir goat milk with cow milk whey. The experimental design used was a randomized block design (RBD) with 3 treatments performed 3 replications. The experimental design in this study was a 3x2 factorial design of the independent variable that is, whey kefir using goat's milk and cow's milk was repeated 3 times. 3% KSKO kefir starter (control), 5% KSK kefir starter, 10% KSK2 kefir starter, 15% KSK3 kefir starter. The dependent variable in this study is the laboratory test of antioxidant content, pH, acidity, total lactic acid bacteria. So that this study can be concluded that the volume of kefir whey produced at the addition of different levels of kefir grain to the whey volume of goat milk and cow milk produced is significantly different.

scholarly journals İnek ve Keçi Sütleri Kullanımının Kefirin Antioksidan, Reolojik ve Duyusal Özellikleri Üzerine Etkisi

2021 ◽  
Vol 9 (1) ◽  
pp. 7-14
Author(s):  
Duygu Benzer Gürel ◽  
Merve Ildız ◽  
Serdal Sabancı ◽  
Nurcan Koca ◽  
Özlem Çağındı ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Goat Milk ◽  
Sensory Properties ◽  
The Other ◽  
Cow Milk ◽  
Cow’S Milk ◽  
Cow's Milk ◽  
Other Hand ◽  
Goat’S Milk ◽  
Goat's Milk

In recent years, demand for products produced with goat milk has been increasing. On the other hand, compared to cow's milk, component and flavour differences in goat milk can cause significant differences in the properties of products produced with goat's milk and affect the acceptability of the product. In this study, it was aimed to compare the antioxidant capacity, rheological and sensory properties of kefir produced with goat milk with those properties of kefir produced of cow milk. In this context, cow milk, goat milk and 1: 1 ratio of cow and goat milk kefir were produced, physico-chemical, rheological and sensory analyses were performed. It was determined that the rheological properties of all kefir samples exhibit pseudoplastic behaviour and are compatible with the power-law model. The apparent viscosity of the kefir produced by the goat milk was lower than cow milk kefir. It was determined that the total antioxidant capacity of goat milk kefir was higher than cow's milk kefir and a and b values were lower in colour. On the other hand, in goat milk kefir, panellists perceived lower consistency and kefir flavour, also its overall acceptability score was lower. The addition of 50% cow's milk to goat's milk influenced the condition of goat's milk. The sensory properties of the mixture milk kefir were similar to the sensory properties of the cow's milk kefir. Although the mixture kefir positive results, it has been concluded that further studies are needed to obtain better consistency and flavour in kefir production from goat milk.

scholarly journals Evaluasi Kualitas Susu Kambing Etawa Yang Dikoleksi dari Peternakan Berskala Kecil Di Wilayah Samigaluh, Kulon Progo

2020 ◽  
Vol 3 (1) ◽  
pp. 41
Author(s):  
Nur Ika Prihanani ◽  
Risa Ummami ◽  
Naela Wanda Yusria Dalimunthe ◽  
Muhammad Rosyid Ridlo
Keyword(s):  
Physical Condition ◽  
Goat Milk ◽  
Milk Composition ◽  
Fat Content ◽  
Animal Origin ◽  
Plate Count ◽  
Goat’S Milk ◽  
Goat's Milk ◽  
Total Bacteria

Peranakan Etawa (PE) Goat is a type of superior goat that is very potential to be maintained as a dairy goat. Food safety guarantee of animal origin becomes very important in order to prevent and spread disease from animal to human. So it takes an effort in terms of quality control of food of animal origin, especially goat's milk. This study aims to determine the quality of PE goat milk which is maintained by farmers in small farms. The study was conducted on 15 samples of goat milk collected in the region of Samigaluh, Kulon Progo. The research used a method of testing the quality of milk in the laboratory that includes testing the physical condition of milk and milk composition. Testing the physical condition of milk consists of testing of cleanliness, color, odor, and taste. Testing of milk composition consist of degree of acid, reductase, fat content, calculation of total bacteria by Total Plate Count (TPC) method. The data obtained are then analyzed descriptively. The results showed milk samples were clean, yellowish, typical odor of fresh milk, and had a slightly sweet taste. Mean of acid degree 7,1°SH, mean of reductase rate 2 hour, mean of fat content 4,53% and mean total bacteria 2,8 x 105 CFU ml. These results indicate that the quality of goat milk included in the category worth to be consumed with sufficient quality. The quality of goat's milk is influenced by the type of feed given and the nutrient composition in the feed type.

scholarly journals Perbandingan Kualitas Fisiokimia Kefir Susu Kambing dengan Kefir Susu Sapi (COMPARISON OF PHYSIOCHEMICAL QUALITY OF GOAT MILK KEFIR WITH COW MILK KEFIR)

2018 ◽  
Vol 19 (2) ◽  
pp. 263
Author(s):  
Sulmiyati Sulmiyati ◽  
Nur Saidah Said ◽  
Deka Uli Fahrodi ◽  
Ratmawati Malaka ◽  
Fatma Fatma
Keyword(s):  
Lactic Acid ◽  
Goat Milk ◽  
Cow Milk ◽  
Cow’S Milk ◽  
Cow's Milk ◽  
Ethanol Content ◽  
Goat’S Milk ◽  
Significant Difference ◽  
Goat's Milk

Kefir is one of the fermented beverages which has a distinctive taste from other fermented milk products. Based on the results of several studies concluded that one that affects the quality of kefir is the milk of being used for. The purpose of this study was to examine the comparison of physiochemical quality of kefir made from goat’s milk and cow’s milk. This study used Completely Randomized Design (CRD) with two treatments and five replications using different milk which was goat’s milk and cow’s milk. Parameters measured were the weight gain of kefir grain (PBBK), ethanol content, the percentage of lactic acid and pH of kefir. The data obtained were analyzed by using the Analysis of Variance and if the treatment was significantly different, then the test continued with the Least Significant Difference (LSD). The results showed that kefir produced with different types of milk showed a significant effect (P <0.05) on pH parameters, lactic acid percentage, and ethanol content, but no significant effect (P>0.05) on the value of PBBK. It can be concluded that the best kefir made of goat milk has characteristics: pH value 3.89, the percentage of lactic acid 0.14; PBBK 26.61%; and 0.72% ethanol content. 

Desenvolvimento de Iogurtes de Leite de Búfala e Cabra Sabor Açaí

UNICIÊNCIAS ◽  
2019 ◽  
Vol 22 (3Esp) ◽  
pp. 7 ◽  
Author(s):  
Ellen Godinho Pinto ◽  
Maria Cecilia Pereira ◽  
Dayana Silva Batista Soares ◽  
Aline Sousa Camargo ◽  
Ana Paula Stort Fernandes
Keyword(s):  
De Novo ◽  
Goat Milk ◽  
Value Added ◽  
Titratable Acidity ◽  
New Product ◽  
Buffalo Milk ◽  
Soluble Solids ◽  
Fresh Milk ◽  
Goat’S Milk ◽  
Goat's Milk

A elaboração de iogurtes de cabra e búfala pode ser considerada uma excelente alternativa para agregação de valor ao leite. O açaí é uma fruta que apresenta um conteúdo significativo de antocianinas e atividade antioxidante, sugerindo que um alto consumo de alimentos ricos nestes compostos contribui para diminuição no risco de diversas desordens crônicas não-transmissíveis, sendo uma ótima alternativa para sabor de iogurte. O presente estudo teve como objetivo avaliar as características do leite in natura e dos iogurtes de leite búfala e cabra sabor açaí. Foram desenvolvidos os iogurtes com leite (búfala e cabra) nas proporções: 82,5% de leite, 2,5% de fermento lático, 5% de açúcar e 10% de polpa de açaí. Realizaram-se as seguintes análises nos leites in natura e nos iogurtes: pH, acidez titulável, sólidos solúveis totais (SST), densidade, teor de lactose, umidade, resíduo mineral fixo e cor. No leite de búfala pode-se observar teor superior de lactose comparado ao leite de cabra, entretanto o leite de cabra apresentou teor de resíduo mineral fixo superior ao de búfala. No iogurte de leite de búfala encontraram valores de lactose e SST superiores ao encontrado no iogurte de cabra sabor açaí, todavia no iogurte de leite de cabra o pH e resíduo mineral fixo foram superiores. Verificou-se que os iogurtes desenvolvidos de leite de búfala e cabra sabor açaí são excelentes alternativas de novo sabor. O iogurte de leite de búfala apresenta teores superiores de lactose e sólidos solúveis, o que industrialmente teria um rendimento maior. Palavras-chave: Novo Produto. Agregação de Valor. Intolerância. AbstractThe production of goat and buffalo yogurts can be considered an excellent alternative for adding value to milk. Açaí is a fruit that presents significant content of anthocyanin and antioxidant activity, suggesting that a high consumption of food rich in these compounds contributes to a reduction in the risk of several chronic non-communicable disorders, being a great alternative to yogurt flavor. The objective of present study was to evaluate the characteristics of the milk in natura and the yogurts of buffalo and goat milk açaí flavor. Yoghurts with milk (buffalo and goat) were developed in the proportions: 82.5% milk, 2.5% lactic yeast, 5% sugar and 10% açaí pulp. The following analyzes were carried out on fresh milk and yogurt: pH, titratable acidity, total soluble solids (TSS), density, lactose content, moisture, fixed mineral residue and color. In buffalo milk, higher lactose content can be observed compared to goat's milk, however, goat's milk presented a fixed mineral residue content higher than that of buffalo. In buffalo milk yogurt they found lactose and SST values higher than those found in the goat yogurt taste açaí, however in goat milk yogurt the pH and fixed mineral residue were higher. It was found that the yoghurts developed from buffalo and goat milk açaí flavor are excellent alternatives of new flavor. The buffalo milk yogurt has higher levels of lactose and soluble solids, which would industrially have a higher yield. Keywords: New Product. Value Added. Intolerance.

scholarly journals Quality of goat's milk produced on farms in the Paraná State - Brazil

2018 ◽  
Vol 39 (6) ◽  
pp. 2425
Author(s):  
Edson Antonio Rios ◽  
Juliana Ramos Pereira ◽  
Ronaldo Tamanini ◽  
Juliana Mareze ◽  
Natalia Gonzaga ◽  
...  
Keyword(s):  
Goat Milk ◽  
Physicochemical Characteristics ◽  
Physicochemical Analysis ◽  
Raw Material ◽  
Salmonella Spp ◽  
Psychrotrophic Bacteria ◽  
Legal Standards ◽  
Goat’S Milk ◽  
Goat's Milk ◽  
The Government

The consumption of goat's milk has increased significantly in Brazil. In 2014, its production was 153 thousand tons, and the Paraná state is responsible for the production of 380 thousand liters. Although the government regulates goat milk, this raw material is not widely studied in Brazil. The objective of this work was to study its microbiological and physicochemical characteristics. A total of 32 samples from 8 Paraná State farms were analyzed. The microbial indicators of hygiene, psychrotrophic bacteria, L. monocytogenes and Salmonella spp. were evaluated. We used physicochemical tests of goat’s milk that were established by the Brazilian legislation. In addition, phosphatase activity, pH, conductivity, boiling test, and urea content were measured. The average concentrations of mesophilic aerobes, coliforms, E. coli, coagulase positive Staphylococcus and psychrotrophic microorganisms were 4.10, 2.38, 0.65, 2.06 and 4.02 log CFU mL-1, respectively. The samples did not present L. monocytogenes and Salmonella spp. In the physicochemical analysis, 90.63% of the samples presented at least one parameter outside the legal standards. In the somatic cell count, 73.33% of the samples had counts higher than 1 x 106 cells mL-1. Raw goat's milk produced in Paraná has high coliform and psychrotrophic counts, indicating poor hygiene during milking. The fluctuating values of the physicochemical data indicate that additional studies are required to determine the parameters that reflect the Brazilian conditions of goat milk production.

scholarly journals A2 milk as an alternative to goat milk in yoghurt production

2020 ◽  
Vol 22 (94) ◽  
pp. 18-22
Author(s):  
V. Ladyka ◽  
M. Samilyk ◽  
L. Ladyka ◽  
A. Helikh ◽  
N. Bolgova
Keyword(s):  
Protein Content ◽  
Goat Milk ◽  
Fat Content ◽  
Cow Milk ◽  
Cow’S Milk ◽  
Energy Value ◽  
Cow's Milk ◽  
Goat’S Milk ◽  
Organoleptic Characteristics ◽  
Goat's Milk

The article discusses and analyzes the prospects for the use of cow’s milk A2 as an alternative to goat milk in the production of yoghurt. It has been analyzed that goat’s milk is less allergenic than cow’s milk. The genotype of A1 and A2 milk samples was determined using molecular biological analysis of allele recognition by polymerase chain reaction (PCR) in real time. The organoleptic characteristics of yoghurts made from cow’s milk A1, A2, goat’s milk, from a mixture of goat’s and cow’s milk of different genotypes were studied and presented in the work in the form of a profile analysis using the significance coefficients of each individual descriptor (color, smell, taste, appearance and consistency). The physicochemical parameters (protein and fat content) of yoghurts made from cow’s milk A1, A2, goat’s milk, from a mixture of goat’s and cow’s milk of different genotypes were determined. High fat and protein content was found in sample № 3 made from goat milk. The protein content is 3.99 g per 100 g of product, fat – 4.1 g per 100 g of product. Sample No. 2 is made from A2 cow’s milk contains 0.5 g per 100 g of product less protein and 0.6 g per 100 g of product less fat than sample No. 1 made from A1 cow milk. The best result in terms of protein and fat content in the sample of yogurt № 4, made from a mixture of cow and goat milk. This paper presents a comparative analysis of the energy value of yoghurts based on cow’s milk A1, A2, goat’s milk, from a mixture of goat’s and cow’s milk of different genotypes. It should be noted that the highest numerical values of the level of balance in terms of organoleptic indicators and energy value were obtained by samples of yoghurts made from a mixture of cow’s A2 milk and goat’s milk. Studies have shown that yoghurts made from a mixture of goat and cow milk meet the requirements of the standard.

Effect of frozen storage on some characteristics of kefir samples made from cow’s and goat’s milk

2021 ◽  
pp. 108201322110037
Author(s):  
Ercan Sarica ◽  
Hayri Coşkun
Keyword(s):  
Organic Acids ◽  
Frozen Storage ◽  
Aerobic Bacteria ◽  
Ph Values ◽  
Flavor Components ◽  
Goat’S Milk ◽  
Volatile Flavor ◽  
Goat's Milk ◽  
Lactobacillus Spp ◽  
Oxalic Acids

This study was aimed to determine the changes in kefir samples (CK and GK) made from cow’s and goat’s milk during frozen storage. The CK and GK samples were first stored at +4 °C for 14 and 21 days. Thereafter, all the samples were frozen at –35 °C for 24 h and kept at –18 °C for 45 days. There was no significant change in the fat, protein, acidity and pH values in both samples during the storage. The values of viscosity, WI and C* were higher in the CK samples while the syneresis value was higher in the GK samples throughout the frozen storage. The microorganisms ( Lactococcus spp., Lactobacillus spp., Leuconostoc spp., total mesophilic aerobic bacteria and yeasts) found in kefir made from goat's milk were more affected from the frozen storage. In both samples, the changes in organic acids and volatile flavor components were not significant during frozen storage, except acetic, citric and oxalic acids and acetaldehyde in GK sample. In addition, CK samples were preferred sensorially more by the panellists during frozen storage.

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 Evaluation of the Physicochemical Quality of Raw Bovine and Goat Milk Marketed in the Steppic Region of Djelfa (Algeria)

2019 ◽  
Vol 76 (1) ◽  
pp. 55
Author(s):  
Mourad HAMIROUNE ◽  
Sounia DAHMANI ◽  
Zineb KASMI ◽  
Abdelhamid FOUGHALIA ◽  
Mahmoud DJEMAL
Keyword(s):  
Freezing Point ◽  
Bovine Milk ◽  
Goat Milk ◽  
Raw Milk ◽  
Cow’S Milk ◽  
Physicochemical Quality ◽  
Cow's Milk ◽  
Goat’S Milk ◽  
Disciplinary Procedures ◽  
Goat's Milk

This research was conducted to study the key physicochemical parameters of samples of raw bovine and goat milk collected in the steppic region of Djelfa. One hundred and six samples of raw milk were collected from April 2018 to May 2018, at points of sale and analyzed. The results showed that cow’s milk had 3.66±0.89% fat, 11.4±1.56% solid not fat, 4.35±0.61% protein, 6.35±0.89% lactose and a density of 1.0360±0.0056 with a freezing point of -0.380±0.053 °C. While goat’s milk had 3.43±0.65% fat, 10.2±0.92% solid not fat, 3.88±0.36% protein, 5.66±0.52% lactose and a density of 1.0317±0.0035 with a freezing point of -0.348±0.044 °C. This proves that cow’s milk has a slightly higher physicochemical quality than goat’s milk. In addition, the present study showed that 100% raw goat milk is wet against 97.1% raw bovine milk. This indicates the presence of cases of fraud requiring disciplinary procedures. Moreover, in the majority of the cases, the storage temperatures of the milk far exceed the values recommended by the Algerian standards (+6°C). It is necessary to establish a program of control and popularization of all the actors of the sector in order to improve the quality and the quantity of raw milk produced.

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