scholarly journals Development of Kefir from goat milk added by guava pulp

2020 ◽  
Vol 9 (7) ◽  
pp. e468973943
Author(s):  
Nhaiara Monteiro de Farias Lima ◽  
Camila de Araújo Holanda ◽  
Gizele Almada Cruz ◽  
Lívia Gabrielle Maciel Sales ◽  
Laura Maria Bruno ◽  
...  
Keyword(s):  
Dairy Products ◽  
Physicochemical Parameters ◽  
Goat Milk ◽  
Fermented Milk ◽  
Positive Answer ◽  
Cow Milk ◽  
Laboratory Research ◽  
Microbiological Analysis ◽  
Acceptance Test ◽  
Probiotic Potential

Goat milk may be an alternative to cow milk to people that suffer from allergic conditions, besides presenting high digestibility. Among dairy products, fermented milk is one of the most consumed. In this category, Kefir is a fermented milk that presents functional properties. Therefore, this laboratory research aimed to obtain Kefir from goat milk added by different guava pulp concentrations (0, 5, 15 and 25 %) and evaluate its physicochemical, microbiological and sensorial characteristics through quantitative data. Data obtained from microbiological analysis evidenced food safety for consumers and probiotic potential. The pulp concentration variation changed some physicochemical parameters. Sensorially, all the samples had high positive answer levels in the acceptance test, besides the last group had high percentage of buying intention. This study demonstrates that Kefir added with the higher guava pulp concentration presents potential to be introduced in the Brazilian market.

scholarly journals Inhibitory effect of goat and cow milk fermented by Bifidobacterium longum on Serratia marcescens and Campylobacter jejuni

2011 ◽  
Vol 24 (No. 4) ◽  
pp. 164-171 ◽  
Author(s):  
H. Pavlović ◽  
J. Hardi ◽  
V. Slačanac ◽  
M. Halt ◽  
D. Kocevski
Keyword(s):  
Serratia Marcescens ◽  
Campylobacter Jejuni ◽  
Bifidobacterium Longum ◽  
Goat Milk ◽  
Fermented Milk ◽  
Inhibitory Effect ◽  
Cow Milk ◽  
Fermentation Time ◽  
Ph Values ◽  
Fermentation Parameters

This study was performed to determine the influence of fermented goat and cow milk produced by the use of Bifidobacterium longum Bb-46 on pathogenic Serratia marcescens and Campylobacter jejuni strains. The correlation between the inhibitory effect and some fermentation parameters (the number of viable probiotic cells and pH of fermented milk) was also determined. Bifidobacterium longum counts and pH values were also measured in milk samples during fermentation. The results showed that the inhibitory effect of Bifidobacterium longum Bb-46 fermented goat milk on Serratia marcescens increased with the fermentation time. The highest inhibitory effect of fermented cow milk occurred in the middle course of fermentation. Statistically significant correlation between the inhibition degree of Serratia marcescens growth and pH values of fermented goat milk was noted as opposed to the correlation between the inhibition degree of Serratia marcescens growth and pH values of fermented cow milk which was not statistically significant. All samples of goat and cow fermented milk exhibited inhibitory effects on the growth of Campylobacter jejuni.  

scholarly journals The Potential of Concentrate of Fermented Milk for Natural Antibacterial

2018 ◽  
Vol 42 (3) ◽  
Author(s):  
Putri Dian Wulansari ◽  
Novia Rahayu ◽  
Firgian Ardigurnita
Keyword(s):  
Fatty Acids ◽  
Antibacterial Activity ◽  
Goat Milk ◽  
Fermented Milk ◽  
Cow Milk ◽  
Chemical Characteristics ◽  
Activity Type ◽  
Physical Test ◽  
Test Chemical ◽  
Antibacterial Material

The objective of the study was to investigate the potential of concentrated fermented milk (yoghurt and kefir) from cow milk and goat milk as a natural antibacterial ingredient. Completely randomized factorial design 2x2 was used in this research. The first factor was the type of fermentation (yoghurt and kefir) and the second factor was type of milk (cow milk and goat milk). The parameters measured were composition, inhibitory test, chemical and physical test. The results showed that the type of milk had significantly affected (P<0.05) on amount of whey and antibacterial activity. Type of fermentation and milk type have a significant effect (P<0.05) on concentrate. Concentrated fermented goat milk has the higher resistance to S. aureus bacteria than concentrated fermented cow milk on the inhibitory test. The type of fermentation and milk type has no significant effect on the composition (moisture content and total solids) and chemical characteristics (pH, lactic acid and free fatty acids) of the concentrate and whey. The conclusion of this research is goat milk yoghurt concentrate was potential to used as a natural antibacterial material.

Occurrence and dominance of yeast species in naturally fermented milk from the Tibetan Plateau of China

2010 ◽  
Vol 56 (9) ◽  
pp. 707-714 ◽  
Author(s):  
Mei Bai ◽  
Manjun Qing ◽  
Zhuang Guo ◽  
Yong Zhang ◽  
Xia Chen ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Yeast Species ◽  
Debaryomyces Hansenii ◽  
Fermented Milk ◽  
Cow Milk ◽  
The Tibetan Plateau ◽  
Microbiological Analysis ◽  
Sequencing Analysis ◽  
Milk Products ◽  
Fermented Milk Products

To determine which yeasts are present in the naturally fermented milks of China, 69 samples made by the nomads of Tibet were collected from the Tibetan Plateau in China. From these samples, 225 strains of yeast were isolated and identified using conventional microbiological analysis and gene sequencing analysis of the D1/D2 domain of the large subunit (26S) ribosomal DNA. The results showed that the total concentration of yeasts in these samples ranged from 5.01 to 8.97 log10 colony-forming units (CFU)/mL (6.91 ± 1.02 log10 CFU/mL; mean ± SD). The number of cultivable yeasts was higher in the samples from Qinghai (7.55 ± 0.75 log10 CFU/mL) than those from Tibet (6.21 ± 0.79 log10 CFU/mL, P < 0.05). Moreover, there were 15 phylotypes in these 69 samples. Among these phylotypes, Kluyveromyces marxianus (49.3%, frequency percentage), Saccharomyces cerevisiae (62.3%), and Pichia fermentans (46.4%) appeared frequently and can be considered the most common culturable species in naturally fermented milk products. Traditional fermented Mongolian cow milk featured a wide diversity of yeast species, including Issatchenkia orientalis , Kazachstania unisporus , Rhodotorula mucilaginosa , Candida pararugosa , Torulaspora delbrueckii , Geotrichum sp., Kazachstania unisporus , Geotrichum fragrans , Debaryomyces hansenii , Yarrowia lipolytica , Trichosporon gracile , and Pichia membranifaciens . This study provides new data on yeast composition in naturally fermented milk and shows the yeast biodiversity of fermented milk products from the Tibetan Plateau of China.

scholarly journals Goat Milk with Different Alpha-s1 Casein Genotype (CSN1S1) Fermented by Selected Lactobacillus paracasei as Potential Functional Food

Fermentation ◽  
2019 ◽  
Vol 5 (3) ◽  
pp. 55 ◽  
Author(s):  
Nicoletta P. Mangia ◽  
Leacady Saliba ◽  
Georgia Zoumpopoulou ◽  
Stefania Chessa ◽  
Rania Anastasiou ◽  
...  
Keyword(s):  
Goat Milk ◽  
Fermented Milk ◽  
Lactobacillus Paracasei ◽  
Cow Milk ◽  
Adhesion Ability ◽  
Viable Population ◽  
Beneficial Traits ◽  
Milk Market ◽  
First Time

The characteristics of fermented milk are affected by the type of milk used and the microorganisms involved in the fermentation process. Goat milk has been widely suggested as a possible alternative to cow milk in allergic subjects, because of the high genetic variability in alpha-s1 casein (CSN1S1) content, which is associated with different technological and nutritional properties of milk. The aim of the study was to evaluate the suitability of goat milk with low and high CSN1S1 to produce fermented milk. In addition, the performance as starter of selected Lactobacillus paracasei FS109 strain compared to no-selected L. paracasei strains was investigated. Initially, the selected L. paracasei FS109 strain was tested for adhesion ability to HT-29 and Caco-2 cells and immunomodulation effect. Then, the strain was used to produce fermented milk from goat milk with a low and high casein CSN1S1 genotype. The results indicated that greater acidifying activity was obtained for L. paracasei FS109 after 24 h of fermentation than the other two strains tested independently by the CSN1S1 genotype. L. paracasei FS109 grew well during fermentation, reaching a higher value (>8.5 log CFU/mL). Interestingly, the same strain maintained a high viable population (about 9 log CFU/mL) during the 30-day cold storage of the product. The present study shows for the first time the suitability of the goat milk with low CSN1S1 genotypes to produce fermented milk and highlight the importance of strain selection in determination of technological and beneficial traits. Combining goat milk with low CSN1S1 and selected strains could be a strategy of improving traditional and functional fermented milk market.

scholarly journals Effectual Gold Nanoprobe Sensor for Screening Cow Milk Adulteration in Goat Milk—Comparison With Conventional PCR

2021 ◽  
Vol 13 (5) ◽  
pp. 41
Author(s):  
Jose Manuel Llopis Ortiz ◽  
Christos Tsouknidas ◽  
Sophie Pytel ◽  
Spiridon Papatheodorou ◽  
Despina Vougiouklaki ◽  
...  
Keyword(s):  
Dairy Products ◽  
Low Cost ◽  
Bovine Milk ◽  
Goat Milk ◽  
Cow Milk ◽  
Conventional Pcr ◽  
Characteristic Peak ◽  
Detection Level ◽  
Milk Adulteration ◽  
Gold Nanoprobe

Different methods have been used to detect milk adulteration, but in recent years the use of nanomaterials has been introduced as an interesting tool, due to their optical properties. A gold nanoparticle (AuNP) probe application was developed in order to evaluate milk adulteration. The methodology relies on the colorimetric differentiation and the participation profiles of the hybridization DNA sequence with the AuNPs. Various concentrations, from 0.01 (traces) to 50%, of cows&rsquo; milk in goats&rsquo; milk samples were prepared for DNA extraction, further identification with the AuNPs and comparison with a conventional PCR. Also, a total of 40 dairy products from goat milk, commonly consumed in Greece, were tested. Negative and goat reaction mixtures showed a purplish coloured solution with a peak at &gt; 570 nm, while samples containing bovine DNA had an absorbance closer to the characteristic peak of the AuNPs at 520-525 nm. Presence of bovine milk was detected even at traces level, achieving a detection level comparable to those achieved by conventional PCR. The use of AuNPs in milk products, provides a low-cost and easy-to-perform method and offers the possibility to detect fraudulent practices in various food matrices.

scholarly journals The Functionality of African Streptococcus Thermophillus and Streptococcus Infantarius Sub Sp. Infantarius in Milk Fermentation

2021 ◽  
Vol 9 (1) ◽  
pp. 111-121
Author(s):  
Isaac M. Maitha ◽  
Dasel W. M. Kaindi ◽  
Cherotich Cheruiyot
Keyword(s):  
Dairy Products ◽  
Incubation Temperature ◽  
Ph Value ◽  
Starter Culture ◽  
Titratable Acidity ◽  
Fermented Milk ◽  
Camel Milk ◽  
Cow Milk ◽  
Milk Samples ◽  
Streptococcus Infantarius

Fermentation serves a key role in inhibiting spoilage microorganism through acidification and production of antimicrobial compounds. The technological information on properties of Streptococcus infantarius sub sp. infantarius which is predominant in most African fermented is dairy products very little. This study was therefore carried out to determine the functionality of selected African Streptococci strains in fermented dairy products. Pasteurized milk samples from camels and cows were inoculated with different strains and a selected combination at a rate of 3% v/v and incubated at different temperatures of 25 oC, 30 oC, 37 oC, and 45 oC for 9 hours. Analysis was done after every 3 hours for pH and titratable acidity while viscosity was done after incubation and cooling of the product. The different fermented milk samples were subsequently evaluated for consumer acceptability. Milk inoculated with both African type Streptococcus thermophillus (146A8.2) and Streptococcus infantarius sub sp. infantarius CJ 18 (9377), and incubated for nine hours recorded the highest amount of titratable acidity of 0.97 for the camel milk and had the least pH value of 4.12 for cow milk compared to the other strains. The cow milk had the highest viscosity level of 59.64 cPs compared to camel milk which was 29.44 cPs. The levels of titratable acidity and viscosity depended on the strain and incubation temperature. The African type Streptococcus thermophillus (146A8.2) and Streptococcus infantarius sub sp. infantarius CJ 18 (9377), isolated from fermented camel milk had good technological properties that are useful as starter culture for development of fermented milk products.

scholarly journals Physicochemical Parameters of Probiotic Yoghurt with Bioactive Natural Products from Sea Buckthorn

2013 ◽  
Vol 17 (1) ◽  
pp. 27-38 ◽  
Author(s):  
Anca Tifrea ◽  
Ovidiu Tiţa ◽  
Endre Máthé ◽  
Otto Ketney
Keyword(s):  
Lactic Acid ◽  
Human Body ◽  
Nutritional Quality ◽  
Dairy Products ◽  
Physicochemical Parameters ◽  
Functional Foods ◽  
Fermented Milk ◽  
Sea Buckthorn ◽  
Bioactive Natural Products ◽  
Probiotic Dairy Products

Abstract Probiotic dairy products are part of functional foods, which are made from fermented milk selected from a culture or a concentrate of bacteria that improve the microbial balance in the gut. These products have positive and beneficial influence on health and integrity of the human body. In the present study regarding the fortification with oil and pulp of sea buckthorn, was to obtained product similar to the conventional yoghurt, consistency and texture aimed at reducing heat treatments and stages technology in order to preserve nutritional quality. This research focused on optimizing the technology for obtaining yoghurt and selecting the best options regarding the addition of sea buckthorn pulp or oil, based on the following parameters : acidity, pH and lactic acid. At the same time we aimed to obtain probiotic yoghurt ,to make comparative studies on major parameters and to select the optimal probiotic yoghurt with sea bucktorn that give a good stabilization.

scholarly journals PESTICIDE RESIDUES IN COW MILK AND DAIRY PRODUCTS FROM THE MAJOR MILK PRODUCING AREA OF SRI LANKA

AGROFOR ◽  
2019 ◽  
Vol 4 (3) ◽  
Author(s):  
Jagath JAYASINGHE ◽  
Samudra PATHIRANA ◽  
Dhammi DILHANI ◽  
Senevirathne NAVARATHNA ◽  
Manoj SINHAPURA ◽  
...  
Keyword(s):  
Sri Lanka ◽  
Pesticide Residues ◽  
Dairy Products ◽  
Fermented Milk ◽  
World Health ◽  
Cow Milk ◽  
Pasteurized Milk ◽  
Fresh Milk ◽  
Sterilized Milk ◽  
Milk And Dairy Products

Nuwara Eliya district is the leading fresh milk producing area in Sri Lanka. In the district, pesticides are widely applied for intensive cultivation of vegetables which leads to contamination of water and material used to feed cows. Contamination and health risk hazards of organophosphorus pesticide residues in milk and dairy products originated in the district were studied. Identification and quantification of eleven commonly used pesticides in 50 milk samples and 12 dairy product samples were performed using standard analytical methods and GC-MS technique. Results revealed that fresh milk contained residues of Prothiofos (0.0568±0.037 mg/kg), Diazinon (0.0378±0.009 mg/kg), Chlorpyrifos (0.0264±0.004 mg/kg), Profenofos (0.196±0.099 mg/kg), Fipronil (0.1906±0.188 mg/kg), Phenthoate (0.1012±0.110mgkg), Dimethoate (0.1196±0.201 mg/kg) and Tebuconazole (0.062±0.069 mg/kg) at higher levels than the recommended maximum residue levels (MRLs) of the World Health Organization. Sterilized milk (0.0115±0.000 mg/kg) and fermented milk (0.022±0.004 mg/kg) contained higher levels of Profenofos than the MRLs. Higher levels of Fipronil than MRLs were observed in pasteurized milk (0.086±0 mg/kg) and fermented milk (0.014±0.000 mg/kg) samples. Phenthoate at higher levels than MRL was reported in pasteurized milk (0.3645±0.402 mg/kg), sterilized milk (0.1405±0.197 mg/kg) and milk powder (0.0055±0.000 mg/kg). Moreover, Dimethoate content in fermented milk (0.087±0.012 mg/kg) was higher than the MRL. Routine monitoring of the above pollutants in food items including fresh milk and value added milk products is essential to prevent, control and reduce the pollution and to minimize the health risks to consumers.

scholarly journals Effect of Milk Type on the Microbiological, Physicochemical and Sensory Characteristics of Probiotic Fermented Milk

2019 ◽  
Vol 7 (9) ◽  
pp. 274 ◽  
Author(s):  
Dimitra Dimitrellou ◽  
Chrysoula Salamoura ◽  
Artemis Kontogianni ◽  
Despoina Katsipi ◽  
Panagiotis Kandylis ◽  
...  
Keyword(s):  
Lactobacillus Casei ◽  
Starter Culture ◽  
Goat Milk ◽  
Streptococcus Thermophilus ◽  
Fermented Milk ◽  
Lactobacillus Delbrueckii ◽  
Cow Milk ◽  
Commercial Sample ◽  
Ph Values

The production of fermented milk using cow milk, goat milk and a mixture of them (1:1) was evaluated. The traditional yogurt starter culture was used—Streptococcus thermophilus and Lactobacillus delbrueckii ssp. bulgaricus, along with Lactobacillus casei ATCC 393. The objective was to monitor the viability of these cultures during the storage of fermented milk at 4 °C for up to 28 days. Storage significantly affected the viability of all microorganisms and especially L. bulgaricus. All microorganisms retained viable numbers higher than 7.5 log CFU g−1, even after 4 weeks of storage, which is important to confirm the probiotic character of the product. The use of goat milk significantly affected the pH and acidity of fermented milk. More specifically, the use of goat milk led to fermented milk with lower pH values and higher acidities than fermented milk with cow milk. The sensory evaluation ascertained the overall quality of fermented milk with a mixture of cow and goat milk, which scored similar values to the commercial sample.

scholarly journals ​Importance of Genetic Polymorphism of Goat Milk Proteins on Human Nutrition and Health: A Review

2021 ◽  
Author(s):  
A.S. Meena ◽  
Rajiv Kumar ◽  
S.S. Misra ◽  
Arun Kumar ◽  
Samlesh Kumari ◽  
...  
Keyword(s):  
Genetic Polymorphism ◽  
Dairy Products ◽  
Bioactive Peptides ◽  
Goat Milk ◽  
Value Added ◽  
Biological Properties ◽  
Cow Milk ◽  
Alternative Source ◽  
Important Place ◽  
Casein Protein

The objective of the study is impotance of casein protein genetic polymorphism of goat milk. Goat milk is highly digestible and has medicinal properties in human being. Goat milk and its value added dairy products have higher demand in many contries of world. Due to evolution process, much genetic variability has been developed in casein protein genes. This is originatd due to point mutation; addition/deletion and many other factors lead to huge genetic variation in goat casein genes. Because of this goat milk, chemical and biological properties have been affected. Goat milk casein contents decide the cheese making properties as well as nutritional and medicinal values. Goat milk is good alternative source of nutrition in human when people have cow milk problems. Goat milk has humerous inactive bioactive peptides in their casein protein. These have important place for human health and nutrition. In the future, this is great possibility for development of medicinal value functional dairy products from functional bioactive peptides.

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