Neurosphora sitophilaによる廢資源の利用 (第3報) : 稻藁酸糖化液に於ける培養試驗 (其の1)

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By using rice straw hydrolysate as the culture mdium of Neurospora sitophila, the following results were obtained.1) 5 gr of powdered rice straw were decomposed with 50 cc of H_2SO_4 (0.25%, 0.5%, 0.75%, 1.0%, 1.5%, 2.0%) for 10 min., 30 min., 60 min. under 30 lbs, 50 lbs, 75 lbs, [table]Generally, the yield of reducing sugar from rice straw decomposed under 30 lbs was higher than that under 50 lbs and 75 lbs. When the hydrolysis was carried out under 50 lbs with high concentration of acid and for a long time, the yield of reducing sugar decreased on account of the over-decomposition.2) The hydrolysate prepared under the condition (75 lbs, 0.25% H_2SO_4,10 min.) was most favourable for the growht, so that the yield of fungus, the rate of sugar consumption and the pigment production showed their best.3) As the neutralizing reagent of the hydrolysate, ammonia was most fitted for the growth of the fungus, but NaOH for its pigment production.4) The rate of sugar consumption by this fungus in the hydrolysate increased gradually until 5th day, but the weight of mycelium reached to its maximum in 3 days with subsequent decrease. The pigment production increased gradually to its maximum after 5 days.5) The yield of fungus, the amount of sugar consumed and the pigment production increased with sugar concentration, but the rate of sugar consumption decreased.The sugar concentration of the hydrolysate fitted for the growth was 0.6〜1.2%.
社団法人日本生物工学会の論文
1952-02-15

Neurosphora sitophilaによる廢資源の利用 (第3報) : 稻藁酸糖化液に於ける培養試驗 (其の1)

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