In vitro, in vivoにおける第一胃内Entddinium属繊毛虫のデンプンの取り込みと分解に関する定量的観察

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タイトル別名
  • Quantitative Observation of Starch Accumulation and Degradation by Rumen Ciliates Genus Entodinium In Vitro and In Vivo
  • In vitro in vivo ニ オケル ダイ1イナイ Entodiniu

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The experiments were undertaken to determine the extent of starch accumulation and degradation by Entodinium ciliates in vitro and in vivo. The results demonstrated that the rate and amount of starch granule accumulation were affected with the size, form and quantity of starch granule in the rumen. Rice starch having the smallest size among the granules used was engulfed quickly and appeared numerously in the endoplasm of Entodinium ciliates cells. The amount of starch granule accumulation seemed to be limited with ciliate body volume, and the maximal amount of starch accumulation in the ciliates was 4.5mg per 105 ciliates. The ciliates digested engulfed starch glanules completely and accumulated another polysaccharides being stained reddish-purple by Lugol's solution in their ectoplasm. The maximal accumulation of these polysaccharides occurred after 8 hours of the in vitro culture at the level of 1.7mg per 105 ciliates. These polysaccharides decreased when rice starch granules in the endoplasms have disappeared, strongly suggesting that the ciliates synthesize their own reserve polysaccharides and utilize them for their nutrients.

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