Question
Write short note: Production of Yoghurt.
✓
Answer
- Yoghurt is one of the milk product produced from milk with the help of lactobacilli (inoculant).
- In the industrial production of yoghurt, the milk is added with condensed milk powder. This increases the protein content of the milk. Then this milk is subjected to fermentation.
- Milk is boiled and then it is cooled till it becomes lukewarm.
- Then the bacterial strains of Streptococcus thermophiles and Lactobacillus delbrueckii are added to this lukewarm milk in 1:1 proportion.
- The Streptococcus bacteria convert the milk into solution containing lactic acid. This makes the proteins to gel out. It makes the yoghurt dense.
- The lactobacilli help in the formation of acetaldehyde like compounds giving a characteristic taste to the yoghurt.
- For commercial reasons, various fruit juices are mixed with yoghurt to impart different flavours forming strawberry yoghurt, banana yoghurt, etc.
- The pasteurization is carried out to increase the shelf life of yoghurt and improve its probiotic properties.
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