Citation

Kunhi, A. A. M., Devi, B. R. G., Sitaram, N., and T. N. R. Rao, Single cell protein from rice straw. Indian Food Packer 36: 39-46, 1981.

Abstract

Studies were carried out to standardize a medium for the production of single cell protein from alkalitreated straw (ATS) by a strain of Penicillium chrysar genum. Ammonium dihydrogen phosphate and a combination of urea and ammonium sulphate were found to be the best sources of nitrogen. The optimum were 500, 200, 200, 30 and 5 mg per litre of medium. Addition of trace elements Fe, Mn, Co, Zn, and Cu did not show any significant increase in protein yield. Substrate concentration of 1 to 1.5% (W/V) was found to be most suitable for maximal production of protein. No significant effect was observed when tap water was used in the place of distilled water for media preparation. The efficiency of the optimized medium was compared with 3 other standard media used to grow cellulolytic organisms. The production of SCP was scaled up to 40 litre fermentor level. The product obtained from the fermentar after 72 hr growth contained 34% crude protein whereas that fram the shake flasks contained 38-42% protein. 93-96% of the 74-76% cellulose originally present in the substrate (ATS) was utilized by the organism. The conversion of ATS to crude protein was about 19%.

Country, State, District, etc.

India

Language

English

Material

rice straw

Use category

single cell protein