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Both species produce lactic acid, [8] which gives yogurt its tart flavor and acts as a preservative. The resulting decrease in pH also partially coagulates the milk proteins, such as casein, resulting in yogurt's thickness. [9] [10] While fermenting milk, L. d. bulgaricus produces acetaldehyde, one of the main yogurt aroma components. [10]
A starter culture is a microbiological culture which actually performs fermentation. These starters usually consist of a cultivation medium, such as grains, seeds, or nutrient liquids that have been well colonized by the microorganisms used for the fermentation.
Yogurt production involves preparing warm milk to a temperature (30–45 °C (86–113 °F)) that will not kill the live microorganisms that turn the milk into yogurt, inoculating certain bacteria (starter culture), usually Streptococcus thermophilus and Lactobacillus bulgaricus, into the milk, and finally keeping it warm for several hours (4 ...
A fermented milk product. In common with all dairy yogurt, Bulgarian yogurt is produced through the bacterial fermentation of milk, using a live culture of Lactobacillus bulgaricus and Streptococcus thermophilus. Butter [6] Made by churning fresh or fermented cream or milk.
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).
Dairy products include common grocery store food around the world such as yogurt, cheese, milk and butter. [2] [3] A facility that produces dairy products is a dairy. [a] [4] Dairy products are consumed worldwide to varying degrees. [5]
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The quality of the curd depends on the starter culture. Fermentation also develops the characteristic flavor and colour of the product. Buffalo curd can be made in both traditional and industrial forms. Traditionally, buffalo milk is filtered and boiled, the scum is removed and it is cooled to room temperature.
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