Yogurt is fermented milk products are popular all over the world. In Vietnam, the yogurt also consume more because the suit the taste of consumers. A fairly simple yaour. You can do at home. Two key steps in the processing process including heat treatment (sterilization) and fermented.How to make at home as follows: offering 2% skim milk powder to the milk to raise the dry matter content. This is intended to create a good structure for the final product. After the stir, then bring the heat treatment in 85 degrees C within 15-30 minutes. Milk has been cooled down the heat 45 degrees C and then to the strains of lactic bacteria to boot, according to the proposed content of the supplier. Stir to melt both boot strains, then divide the mixture into small jugs and cover and give in to wardrobesincubated at 43 degrees c. akin to time yogurt can last from 4-6 hours depending on the boot and the strains of vaccine dose implanted in. Incubated until reaching the structure and appear less liquid water on the surface of products (according to the scientific phenomenon called whey separator) then stop and give in to the refrigerator preserve. Yogurt products follow this process without adding sugar should taste quite sour. When eaten, can mix with fruit jam or honey if desired.Races start using Lactobacillus bulgaricus and yogurt contain processing Streptocuccus thermophilus. This is the thermophile bacteria. This active strains will ferment sugar 4 lactose in the milk into lactic acid and as a result makes the pH of the mixture led to caseins gather winter fades. So in the process of fermentation, the liquid milk will turn into gel form.The characteristic aroma of yogurt is due to volatile compounds, acetaldehyde and also partly came from lactic acid.
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