scholarly journals Modeling of rheological characteristics of the fermented dairy products obtained by novel and traditional starter cultures

2018 ◽  
Vol 55 (6) ◽  
pp. 2180-2188 ◽  
Author(s):  
Dajana V. Vukić ◽  
Vladimir R. Vukić ◽  
Spasenija D. Milanović ◽  
Mirela D. Ilicić ◽  
Katarina G. Kanurić
Keyword(s):  
Dairy Products ◽  
Starter Cultures ◽  
Rheological Characteristics ◽  
Fermented Dairy Products ◽  
Fermented Dairy

scholarly journals Inclusion of Probiotics into Fermented Buffalo (Bubalus bubalis) Milk: An Overview of Challenges and Opportunities

Fermentation ◽  
2020 ◽  
Vol 6 (4) ◽  
pp. 121
Author(s):  
A.M.N.L. Abesinghe ◽  
Hasitha Priyashantha ◽  
P.H.P. Prasanna ◽  
Maheshika S. Kurukulasuriya ◽  
C.S. Ranadheera ◽  
...  
Keyword(s):  
Dairy Products ◽  
Health Benefits ◽  
Natural Antioxidants ◽  
Storage Conditions ◽  
Bubalus Bubalis ◽  
Buffalo Milk ◽  
Starter Cultures ◽  
Fermented Dairy Products ◽  
Calcium Iron ◽  
Fermented Dairy

Buffalo-milk-based dairy products provide various health benefits to humans since buffalo milk serves as a rich source of protein, fat, lactose, calcium, iron, phosphorus, vitamin A and natural antioxidants. Dairy products such as Meekiri, Dadih, Dadi and Lassie, which are derived from Artisanal fermentation of buffalo milk, have been consumed for many years. Probiotic potentials of indigenous microflora in fermented buffalo milk have been well documented. Incorporation of certain probiotics into the buffalo-milk-based dairy products conferred vital health benefits to the consumers, although is not a common practice. However, several challenges are associated with incorporating probiotics into buffalo-milk-based dairy products. The viability of probiotic bacteria can be reduced due to processing and environmental stress during storage. Further, incompatibility of probiotics with traditional starter cultures and high acidity of fermented dairy products may lead to poor viability of probiotics. The weak acidifying performance of probiotics may affect the organoleptic quality of fermented dairy products. Besides these challenges, several innovative technologies such as the use of microencapsulated probiotics, ultrasonication, the inclusion of prebiotics, use of appropriate packaging and optimal storage conditions have been reported, promising stability and viability of probiotics in buffalo-milk-based fermented dairy products.

Persistence of Escherichia coli O157:H7 in Dairy Fermentation Systems

1998 ◽  
Vol 61 (12) ◽  
pp. 1602-1608 ◽  
Author(s):  
SEAN S. DINEEN ◽  
KAZUE TAKEUCHI ◽  
JANE E. SOUDAH ◽  
KATHRYN J. BOOR
Keyword(s):  
Escherichia Coli ◽  
Lactococcus Lactis ◽  
Dairy Products ◽  
Starter Cultures ◽  
Escherichia Coli O157 ◽  
Potential Health ◽  
E Coli ◽  
Lactococcus Lactis Subsp ◽  
Fermented Dairy Products ◽  
Fermented Dairy

We examined (i) the persistence of Escherichia coli O157:H7 as a postpasteurization contaminant in fermented dairy products; (ii) the ability of E. coli O157:H7 strains with and without the general stress regulatory protein, RpoS, to compete with commercial starter cultures in fermentation systems; and (iii) the survival of E. coli O157:H7 in the yogurt production process. In commercial products inoculated with 103 CFU/ml, E. coli O157:H7 was recovered for up to 12 days in yogurt (pH 4.0), 28 days in sour cream (pH 4.3), and at levels >102 CFU/ml at 35 days in buttermilk (pH 4.1). For the starter culture competition trials, the relative inhibition of E. coli O157:H7 in the experimental fermentation systems was, in decreasing order, thermophilic culture mixture, Lactobacillus delbrueckii subsp. bulgaricus R110 alone, Lactococcus lactis subsp. lactis D280 alone, Lactococcus lactis subsp. cremoris D62 alone, and Streptococcus thermophilus C90 alone showing the least inhibition. Recovery of the rpoS mutant was lower than recovery of its wild-type parent by 72 h or earlier in the presence of individual starter cultures. No E. coli O157:H7 were recovered after the curd formation step in yogurt manufactured with milk inoculated with 105 CFU/ml. Our results show that (i) postprocessing entry of E. coli O157:H7 into fermented dairy products represents a potential health hazard; (ii) commercial starter cultures differ in their ability to reduce E. coli O157:H7 CFU numbers in fermentation systems; and (iii) the RpoS protein appears to most effectively contribute to bacterial survival in the presence of conditions that are moderately lethal to the cell.

scholarly journals Improvement of the Texture of Yogurt by Use of Exopolysaccharide Producing Lactic Acid Bacteria

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Xue Han ◽  
Zhe Yang ◽  
Xueping Jing ◽  
Peng Yu ◽  
Yingchun Zhang ◽  
...  
Keyword(s):  
Dairy Products ◽  
Starter Culture ◽  
Streptococcus Thermophilus ◽  
Fermented Milk ◽  
Starter Cultures ◽  
Lactobacillus Delbrueckii ◽  
Exopolysaccharide Production ◽  
Fermented Dairy Products ◽  
Fermented Dairy

19Streptococcus thermophiluswith high exopolysaccharide production were isolated from traditional Chinese fermented dairy products. The exopolysaccharide and viscosity of milk fermented by these 19 isolates were assayed. The strains ofStreptococcus thermophiluszlw TM11 were selected because its fermented milk had the highest exopolysaccharide content (380 mg/L) and viscosity (7716 mpa/s). ThenStreptococcus thermophiluszlw TM11 was combined withLactobacillus delbrueckiisubsp.bulgaricus3 4.5 and the combination was named SH-1. The quality of the yogurt fermented by SH-1 and two commercial starter cultures (YO-MIX 465, YF-L711) were compared. It was shown that the exopolysaccharide content of yogurt fermented by SH-1 was similar to that of yogurt fermented by YF-L711 and significantly higher than YO-MIX 465 (p<0.05). In addition, the yogurt fermented by SH-1 had the lowest syneresis (8.5%) and better texture and sensory than the samples fermented by YO-MIX 465 and YF-L711. It manifested that the selected higher exopolysaccharide production starter SH-1 could be used as yogurt starter and reduce the amount of adding stabilizer, which can compare with the imported commercial starter culture.

scholarly journals The impact of bacterial cultures on changes in contents of PCB congeners in yoghurt and bioyoghurt

2019 ◽  
Vol 69 (1) ◽  
pp. 53-63
Author(s):  
Agata Witczak ◽  
Anna Mituniewicz-Małek
Keyword(s):  
Dairy Products ◽  
Health Hazard ◽  
Starter Culture ◽  
Starter Cultures ◽  
Pcb Congeners ◽  
Fermented Dairy Products ◽  
Fermented Dairy ◽  
Toxicity Equivalent ◽  
The Impact

Persistent organic pollutants, including polychlorinated biphenyls, may pose serious health hazard to consumers due to their lipophilic character as well as their high stability and toxicity. They are common in milk and also in dairy products. Therefore, to provide consumers with food of the lowest possible level of pollutants, it is important to estimate the influence of technological processes in milk and dairy products manufacture on changes in the contents of toxic PCB congeners. The PCB congeners content was determined using gas chromatography with mass spectrometry. Our study showed that yoghurt starter cultures turned out to be an effective tool in decreasing the toxicity equivalent of yoghurts. The presence of additional two starter cultures of bacteria Lactobacillus acidophilus and Bifidobacterium sp. In the A.B.T. bioyoghurt starter culture was most likely the reason of the highest efficiency of this culture to reduce the value of toxicity equivalent (TEQPCB) in bioyoghurts (reduction by nearly 50 %). However, none of the four tested starter cultures of yoghurts and bioyoghurts ensured complete biodegradation of any of the tested PCB congeners. These cultures contributed to a distinct reduction in contents of the PCB congeners in the finished products and, simultaneously, to a significant increase in PCB 28 and PCB 77, which may result from the degradation of more chlorinated congeners. In consequence it can improve the quality of fermented dairy products.

scholarly journals Influence of fat content and starter cultures on the quality of fermented dairy products

2015 ◽  
pp. 55-63
Author(s):  
Mirela Ilicic ◽  
Spasenija Milanovic ◽  
Dajana Hrnjez ◽  
Katarina Kanuric ◽  
Vladimir Vukic ◽  
...  
Keyword(s):  
Dairy Products ◽  
Starter Culture ◽  
Fat Content ◽  
Starter Cultures ◽  
Chemical Quality ◽  
Textural Characteristics ◽  
Physico Chemical ◽  
Fermented Dairy Products ◽  
Fermented Dairy

The objective of this study was to investigate the effect of fat content and type of the starter culture (traditional or probiotic) on physico-chemical quality, rheological and textural characteristics of the fermented dairy products during 14 days of storage. Seven different fermented dairy products of two different groups: stirred and set yoghurts were used in this study. The rheological and textural characteristics of the analyzed type of fermented dairy products after the production and during storage are dependent on the chemical composition, particularly fat content.

scholarly journals Novel Starters for Value Added Fermented Dairy Products

2013 ◽  
Vol 1 (1) ◽  
pp. 83-91 ◽  
Author(s):  
Subrota Hati ◽  
Surajit Mandal ◽  
J Prajapati
Keyword(s):  
Dairy Products ◽  
Starter Culture ◽  
Value Added ◽  
Fermented Milk ◽  
Starter Cultures ◽  
Food Ingredients ◽  
Cell Factories ◽  
Fermented Dairy Products ◽  
Yeasts And Molds ◽  
Fermented Dairy

Starter cultures are those microorganisms (bacteria, yeasts, and molds or their combinations) that initiate and carry out the desired fermentation essential in manufacturing cheese and fermented dairy products such as Dahi, Lassi, Yogurt, Sour cream, Kefir, and Koumiss amongst others. Starter culture is defined as “an active microbial preparation, deliberately added to initiate desirable changes during preparation of fermented products”. Starter cultures have a multifunctional role in dairy fermentations. The production of lactic acid by fermenting lactose is the major role of dairy starters. The acid is responsible for development of characteristic body and texture of the fermented milk products, contributes to the overall flavour of the products, and enhances preservation. Beyond the horizons of their conventional role in acid, flavour and texture development, they are being looked up on as burgeoning “cell factories” for production of host of functional biomolecules and food ingredients such as biothickeners, bacteriocins, vitamins, bioactive peptides and amino acids.

Functional Starter Cultures for Fermented Dairy Products

2018 ◽  
pp. 54-68 ◽  
Author(s):  
Sarang Dilip Pophaly ◽  
Manorama Chauhan ◽  
Vaibhao Lule ◽  
Poonam Sarang ◽  
Jitesh Tarak ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Dairy Products ◽  
Starter Culture ◽  
Starter Cultures ◽  
Sensory Characteristics ◽  
Therapeutic Benefits ◽  
Therapeutic Value ◽  
Fermented Dairy Products ◽  
Fermented Dairy

Fermented dairy products are known for their high nutritional and therapeutic value and are also having excellent sensory characteristics, which make them popular throughout the world. Most of the characteristics of fermented products can be attributed to the activity of their starter culture. The starter microorganisms, in the course of their metabolism, elaborate various compounds and enzymes, which impart desirable properties to the product. Lactic acid bacteria (LAB) are the most common starter bacterial group used extensively in fermentation of dairy products. Lactic acid bacteria synthesize different compounds belonging to classes of organic acids, gases, bacteriocins, flavoring agents, biothickners, nutrients, etc. Molecules within each class vary for each species and even within strains. The functionalities from such novel starter cultures include improved nutritional value, sensory characteristics, and therapeutic benefits. These starter cultures are thus important for development of functional fermented and probiotic products. This chapter explores functional starter cultures for fermented dairy products.

The biological activity of fermented dairy products obtained by kombucha and conventional starter cultures during storage

2014 ◽  
Vol 10 ◽  
pp. 336-345 ◽  
Author(s):  
D. Hrnjez ◽  
Ž. Vaštag ◽  
S. Milanović ◽  
V. Vukić ◽  
M. Iličić ◽  
...  
Keyword(s):  
Biological Activity ◽  
Dairy Products ◽  
Starter Cultures ◽  
Fermented Dairy Products ◽  
Fermented Dairy

scholarly journals Engineering management of starter cultures in study of temperature of fermentation of sour-milk drink with apiproducts

10.5219/1437 ◽  
2020 ◽  
Vol 14 ◽  
pp. 1047-1054
Author(s):  
Ivan Rogoskii ◽  
Mikhailo Mushtruk ◽  
Liudmyla Titova ◽  
Olha Snezhko ◽  
Svitlana Rogach ◽  
...  
Keyword(s):  
Dairy Products ◽  
Engineering Management ◽  
Starter Cultures ◽  
Technological System ◽  
Fermentation Products ◽  
System A ◽  
Sour Milk ◽  
Wide Range ◽  
Fermented Dairy Products ◽  
Fermented Dairy

The article considers the solution of problematic issues of engineering management of poly fermentation in the study of fermentation temperature of sour-milk drink with apiproducts. In the development of fermented dairy products, the components that are part of them, changes in their composition, and properties in the interconnection are considered as a technological system. The authors took into account that food technologies based on the use of the pure culture of one microorganism are limited by the capabilities of its fermentation system systems, the ultimate goal may not be achieved even by changing the conditions and parameters of cultivation. To successfully carry out fermentation processes in the technological system, a combination of cultures, associations of microorganisms with a wide range of fermentation products in contrast to one culture is promising to use. All experimental samples on a set of indicators prevailed control ones. The leader was a sample fermented with yeast with an equal ratio of cultures at a temperature of 38 – 40 °C. The authors found that the set of indicators of finished products for the production of sour-milk drinks with a complex of apiproducts, it is necessary to choose a three-strain poly fermentation product with a congruent ratio of cultures and set optimal fermentation regimes 39 ±1ºC for 5.0 ±0.3 hours.

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