Pastoral dairying in rural Mongolia

2021 ◽  
Author(s):  
Björn Reichhardt
Keyword(s):  
Knowledge Transfer ◽  
Dairy Products ◽  
Starter Culture ◽  
Starter Cultures ◽  
Space And Time ◽  
Anthropological Approach ◽  
Photo Essay

In this photo essay, I illustrate ethnographic encounters with dairying practices and dairy microbes in various regions of Mongolia. Drawing on fieldwork conducted during two consecutive summers this essay focuses on the sociocultural role of microbial starter cultures in producing diverse dairy products (such as fermented mare’s milk) and in cross-generational knowledge transfer. The Mongolian word for starter culture is khöröngö, which also means capital and heritage. In this context, a sociocultural anthropological approach sheds new light on starter cultures as mobile entities of value across space and time.

scholarly journals Lacticaseibacillus rhamnosus Impedes Growth of Listeria spp. in Cottage Cheese through Manganese Limitation

Foods ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1353
Author(s):  
Lieke A. van Gijtenbeek ◽  
Quinn Singer ◽  
Louise E. Steffensen ◽  
Shannon Neuens ◽  
Helle S. Guldager ◽  
...  
Keyword(s):  
Dairy Products ◽  
Competitive Exclusion ◽  
Starter Culture ◽  
Streptococcus Thermophilus ◽  
Starter Cultures ◽  
Growth Potential ◽  
Cottage Cheese ◽  
Dairy Starter Cultures ◽  
Dairy Starter ◽  
Cheese Production

Acidification and nutrient depletion by dairy starter cultures is often sufficient to prevent outgrowth of pathogens during post-processing of cultured dairy products. In the case of cottage cheese, however, the addition of cream dressing to the curd and subsequent cooling procedures can create environments that may be hospitable for the growth of Listeria monocytogenes. We report on a non-bacterio-cinogenic Lacticaseibacillus rhamnosus strain that severely limits the growth potential of L. monocytogenes in creamed cottage cheese. The main mechanism underlying Listeria spp. inhibition was found to be caused by depletion of manganese (Mn), thus through competitive exclusion of a trace element essential for the growth of many microorganisms. Growth of Streptococcus thermophilus and Lactococcus lactis that constitute the starter culture, on the other hand, were not influenced by reduced Mn levels. Addition of L. rhamnosus with Mn-based bioprotective properties during cottage cheese production therefore offers a solution to inhibit undesired bacteria in a bacteriocin-independent fashion.

scholarly journals Fermented milk drink technology with orange syrup

2019 ◽  
Vol 81 (2) ◽  
pp. 92-96
Author(s):  
O. I. Dolmatova ◽  
I. S. Palchikova
Keyword(s):  
Dairy Products ◽  
Pathogenic Bacteria ◽  
Raw Materials ◽  
Starter Culture ◽  
Fermented Milk ◽  
Product Line ◽  
Starter Cultures ◽  
Optimal Dosage ◽  
Customs Union ◽  
Functional Orientation

Nowadays in the dairy industry, the combination of raw materials of plant origin with a dairy base can be noted. Received dairy products have a functional orientation. The product line is expanding with every new filler. This allows the consumers to choose the product they like. The properties of the starter cultures used for fermented milk products were studied by the authors, and the choice of starter culture was carried out. The starter culture “Narine” was used in the development of a method for the fermented milk drink production. The choice of starter culture was made taking into account the more pronounced bactericidal antibiotic properties of acidophilus bacillus in relation to some harmful and pathogenic bacteria compared to other starter cultures. The choice of flavor component was carried out to expand the assortment of fermented milk drink. Experiments showed that yellow and orange colors affect the perception of the buyer positively. They help to cope with fatigue and depression. They are closer to the natural colors of dairy products; therefore, in the production of this fermented milk drink, the orange filler in the form of syrup was used. Mass fraction of orange syrup ranged from 1 to 7%. The optimal dosage was 5%. With the help of it the drink had a clean sour-milk taste and the orange smell, a uniform consistency and a yellowish color. The recipe was selected and the technology of fermented milk drink, which involves the introduction of orange syrup in the fermented product, was developed. The main organoleptic, physico-chemical and microbiological indicators of the fortified fermented milk drink were studied in the work. The compliance of the quality indicators of the fermented milk drink with the requirements of the Technical Regulations of the Customs Union “On the Safety of Milk and Dairy Products” (TR TS 033/2013) was determined.

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 Potential of indigenous lactobacilli as starter culture in dairy products

2017 ◽  
pp. 39-52 ◽  
Author(s):  
Mirjana Bojanic-Rasovic
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Dairy Products ◽  
Local Population ◽  
Geographical Area ◽  
Starter Culture ◽  
Starter Cultures ◽  
Production Environment ◽  
Nonstarter Lactic Acid Bacteria ◽  
Fermented Dairy

Traditional production of fermented dairy products involves lactic acid bacteria that are normally present in the milk and production environment. These lactic acid bacteria represent the niche microbiota of the geographical area and they are responsible for local types of fermented products. In order to standardize indigenous products, the basic requirement is the application of the determined indigenous lactic acid bacteria as starter cultures affecting their specific characteristics by performing fermentation and influencing the ripening process. In the process of cheese fermentation usually participate bacteria of the genus Lactococcus and homofermentative lactobacilli. However, the process ripening is influenced mainly by the so-called nonstarter lactic acid bacteria - lactobacilli and secondary microflora. Lactobacilli during ripening of cheese continue to breakdown the rest of lactose, but they are primarily important in the process of protein breakdown. During metabolism of sugars and amino acids, lactobacilli produce aromatic compounds which have a positive effect on the flavor of the product. Some species of lactobacilli are available as probiotics. Some lactobacilli produce bacteriocins, which prevent the growth of pathogens, as well as many spoilage microorganisms. Indigenous lactobacilli have application especially in the production of typical local dairy products that are well accepted by the local population. Besides that, the use of indigenous lactic acid bacteria as starter cultures allows the production of cheese with designated geographical origin that could be placed on the international market. Consequently, indigenous lactic acid bacteria are a challenge for further research and possible their practical application in the dairy industry.

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.

Development of biotechnology for gluten-free sourdough bakery products with a new microbial composition

2020 ◽  
Vol 29 (12) ◽  
pp. 59-63
Author(s):  
O.I. Parakhina ◽  
◽  
M.N. Lokachuk ◽  
L.I. Kuznetsova ◽  
E.N. Pavlovskaya ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Starter Culture ◽  
Comparative Assessment ◽  
Starter Cultures ◽  
Bakery Products ◽  
Gluten Free ◽  
Microbial Composition ◽  
Fermentative Activity ◽  
Theoretical Foundations

The research was carried out within the framework of the theme of state assignment № 0593–2019–0008 «To develop theoretical foundations for creating composite mixtures for bakery products using physical methods of exposure that ensure homogeneity, stability of mixtures and bioavailability of nutrients, to optimize diets population of Russia». The data on the species belonging of new strains of lactic acid bacteria and yeast isolated from samples of good quality gluten-free starter cultures are presented. A comparative assessment of the antagonistic and acid-forming activity of strains of lactic acid bacteria and the fermentative activity of yeast was carried out. The composition of microbial compositions from selected strains of LAB and yeast was developed. The influence of the starter culture on the new microbial composition on the physicochemical, organoleptic indicators of the bread quality and resistance to mold and ropy-disease was investigated.

Health of the child and the role of dairy products

2016 ◽  
Vol 77 (5) ◽  
pp. 83-88
Author(s):  
I.N. Matvienko ◽  
Keyword(s):  
Dairy Products
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