木材糖化の工業化に關する研究 : (第3報)木材糖化液より酒精の製造

概要

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When the filtrate of wood hydrolzates, previously neutralized to pH 5.6 by calcuim hydroxide, were furnished with ammonium sulphate, ammonium phosphate, ammonium nitrate, potassium phosphate, magnesium chloride, asparagine, potassium chloride, peptone, rice bran, magnesium sulphate, sodium sulphite, aluminium sulphate etc. fermentation did not proceed with yeast, except the case when asparagine was also used. Wood hydrolyzates became fermetable by neutralizing to a little alkaline side, treating with active carbon, or applying steam distillation.The optimum amounts of yeast nutrients are 0.5% of ammonium sulphate and 1% of rice bran on the basis of the sugar contained in the medium. Ethylalcohol fraction(10.6〜9.4%) distilled from wood hydrolyzates contains 0.7〜0.6mg methylallcohol per cc, and the distilled slop contains 1.57〜1.90g of organic substances, 0.46〜0.34g of inorganic substances, 0.003g of nitrogen, 0.076〜0.075g. of potassium and 0.0007g. of P_2O_5 in 100cc.
社団法人日本生物工学会の論文
1949-12-15