Q3 of 15 Page 189

In which food would you find lactic acid bacteria? Mention some of their useful applications.

Lactic acid bactaria produce lactic acid by fermentation.


• They are found in curd, they are responsibe for formation of curd from milk by producing lactic acid.


• In humans, they have flora in oral cavity. intestinal tract and vagina where they play a benificial role.


• They are also present in decaying plants


• They have several applications especially in fermentation industry. LAB are involved in making yogurt, cheese, cultured butter, sour cream, sausage, cucumber pickles, olives and sauerkraut.


More from this chapter

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1

Bacteria cannot be seen with the naked eyes, but these can be seen with the help of a microscope. If you have to carry a sample from your home to your biology laboratory to demonstrate the presence of microbes under a microscope, which sample would you carry and why?

 2

Give examples to prove that microbes release gases during metabolism.

 4

Name some traditional Indian foods made of wheat, rice and Bengal gram (or their products) which involve use of microbes.

 5

In which way have microbes played a major role in controlling diseases caused by harmful bacteria?