アミロ法による高濃度醗酵の研究

概要

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1. Three strains of Rhizopus, R 25-16,R 13-5 and R 12-27,having strong saccharifying abilities were isolated from many samples of soil collected in Taiwan. Among these strains, the strain R 13-5 was found to be best.2. According to Inui's classification, the strain R 13-5 was found to be closely rerated to Rhizopus formosaensis although the former is characteristic of having a tendecy to form chlamydospore and a stronger saccharifying power.3. Rhizopus formosaensis R 13-5 was found to be a powerful glucoamylase producing strain and suitable for the fermentation of a highly concentrated starchy broth. Extensive experiments on a plant scale were carried out using 550 HL fermentation tanks and considerably successful results were obtained. The maximum concentration of broth in a fermentor was increased from 9,000 kg to 14,000 kg.4. The maximum content of alcohol in the fermenting broth reached to 11.88 %. The maximum content of total sugar in saccharified broth increased to 20.08 %. The efficiency of the fermentation was estimated as high as 91%.5. The production cost was reduced by 26% in comparison with the present cost.
社団法人日本生物工学会の論文
1971-02-25