<i>Beta vulgaris</i>根の澱粉集成阻害因子に就て(第3報)

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  • On the Inhibitor for Starch Accumulation in the Root of <i>Beta vulgaris</i>. Part 3
  • Beta vulgaris コン ノ デンプン シュウセイ ソガイ インシ ニ シュウテ 3

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The fractionation procedure of the phosphorylase inhibitor in sugar beet is improved as shown in Diagrams 1 ahd 2. After fractional precipitation with ammonium sulfate, the sugar beet, components are divided into 8 fractions by the use of ethanol, acetone, chloroform, methanol and ethyl ether. The inhibition (%) is proportional to the amount of the inhibitor in the range of 10_??_40% (Fig. 1).<br> After hydrolysis of most of the inhibitory fraction (80_??_90% EtOH fraction, shown in Table 2), only one reducing sugar, namely arabinose, and an ether-soluble substance, m.p. 139_??_140° are obtained. For the latter, the LIEBERMANN-BURCHARD's reaction shows a reddish-violet-violet color.

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