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Microbial food cultures are live bacteria, yeasts or moulds used in food production. Microbial food cultures carry out the fermentation process in foodstuffs. Used by humans since the Neolithic period (around 10 000 years BC) [1] fermentation helps to preserve perishable foods and to improve their nutritional and organoleptic qualities (in this case, taste, sight, smell, touch).
Thermophilic bacteria can produce lactic acid at temperatures of around 50 °Celsius, sufficient to discourage microbial contamination; and ethanol has been produced at a temperature of 70 °C. This is just below its boiling point (78 °C), making it easy to extract. Halophilic bacteria can produce bioplastics in hypersaline conditions. Solid ...
Grapes being trodden to extract the juice and made into wine in storage jars. Tomb of Nakht, 18th dynasty, Thebes, Ancient Egypt. Sourdough starter. In food processing, fermentation is the conversion of carbohydrates to alcohol or organic acids using microorganisms—yeasts or bacteria—without an oxidizing agent being used in the reaction.
Other microorganisms can produce ethanol from sugars by fermentation but often only as a side product. Examples are [4] Heterolactic acid fermentation in which Leuconostoc bacteria produce lactate + ethanol + CO 2; Mixed acid fermentation where Escherichia produce ethanol mixed with lactate, acetate, succinate, formate, CO 2, and H 2
Food microbiology is the study of the microorganisms that inhabit, create, or contaminate food.This includes the study of microorganisms causing food spoilage; pathogens that may cause disease (especially if food is improperly cooked or stored); microbes used to produce fermented foods such as cheese, yogurt, bread, beer, and wine; and microbes with other useful roles, such as producing ...
Drinking habits vary significantly across the globe with many countries have developed their own regional cultures based on unique traditions around the fermentation and consumption of alcohol as a social lubricant, which may also be known as a beer culture, wine culture etc. after a particularly prominent type of drink.
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A SCOBY used for brewing kombucha Kombucha co-culture with SCOBY biofilm. Symbiotic culture of bacteria and yeast (SCOBY) is a culinary symbiotic fermentation culture consisting of lactic acid bacteria (LAB), acetic acid bacteria (AAB), and yeast which arises in the preparation of sour foods and beverages such as kombucha. [1]