question_answer 83)

  (a) The shift from grain to meat diets creates more demands for cereals. Why? (b) A 250 kg cow produces 200 g of protein per day but 250 g of Methylophillus methyiotrophus can produce 25 tonnes of protein. Name this emerging area of research. Explain its benefits.

Answer:

                  (a)The shift from grain to meat diets creates more demand for cereals as it takes 3-10 kg of grain to produce 1 kg of meat by animal farming. (b) This research is related to single cell protein. Microbes are being grown on an industrial scale as a source of good protein. Microbes like Spirulina can be grown easily on materials like wastewater from potato processing plants (containing starch), straw, molasses, animal manure and even sewage, to produce large quantities and can serve as food rich in protein, minerals, fats, carbohydrate and vitamins. Such utilization also reduces the environmental pollution.