酵母の発育促進物質に関する研究(第5報) : 大根葉中の発育促進物質について(その1) : 酵母製造に関する研究第17報

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The growth promotants in radish leaves for the yeast strains, which had been employed for the author's studies on the production of yeast, were studied. The results obtained are summarized as follows.1) Radish leaves were extrated separately with water at three temperature levels (30,70,100℃) and with 1% H_2SO_4 for 2 hours, and filtered. And the promotive effects of each extract thus obtained on the growth of the 3 strains of yeasts, i.e., Mycotorula japonica, Candida sp. No. 110 (isolated by the author) and bakers' yeast, were investigated. The results showed that the growth promotants in radish leaves are extracted by any of the extracting procedure adopted. Among the above-mentioned extracts, that of 1% H_2SO_4 was somewhat superior to the others when tested with Mycotorula japonica.2) The growth promotants in the aqueous extract preopared from radish leaves were thermo-stable and considerably acid-stable. These were adsorbed with active carbon well, but not with acid clay, betonite and liatomaceous earth ; not precipitated by the treatments with such chemicals as Ca(OH)_2,AgNO_3 and Ba(OH)_2 ; scarcely precipitated by salting out with (NH_4)_2SO_4 ; dialyzable through cellophane membrane.3) The growth promotants in raddish leaves were extracted well with methanol, ethanol and butanol. Especially the promotive effects of the extracts with methanol and 90% ethanol were remarkable.4) The ash and steam distillates prepared from radish leaves exerted no promotive effect.
社団法人日本生物工学会の論文
1961-07-15

著者

赤木盛郎
三重大学農学部

酵母の発育促進物質に関する研究(第5報) : 大根葉中の発育促進物質について(その1) : 酵母製造に関する研究第17報

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酵母の発育促進物質に関する研究(第5報) : 大根葉中の発育促進物質について(その1) : 酵母製造に関する研究 第17報

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酵母の発育促進物質に関する研究(第5報) : 大根葉中の発育促進物質について(その1) : 酵母製造に関する研究第17報