緑藻類の化学的研究-I : 「アオノリ」,「アナアオサ」の季節に関する生化学的研究

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概要

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• Besides the routine components of frond, vitamin B1 contents of Enteromorpha compressa and Ulva pertusa were measured especially in the point of view of seasonal variation. The specimens employed were collected from the respective flora growing on a jetty of Ujina har-bor in Hiroshima Bay on the 21st every month during the period of 6 to 7 months. They were submitted to analysis as soon as possible after their collection. As seen from the tables presented elsewhere, fronds of said species of green algae both contain fairly large amounts of crude protein, crude ash and total vitamin B1 but only very small quantities of fatty matters. While the contents of these substances as estimated by chemical analysis show more or less remarkable variations according to the time of the year, those of Enteromorpha compressa appear to be particularly sensible to a change of seasons. Said analytical peculiality of this alga may likely be the counterpart of its physiological sensibility to the environmental conditions according to which the metabolism of Enteromor-pha compressa is very often possible to give rise to the known morphological varieties. Considered in the aspect of vitamin B1 content, the results telling that the usually inferior ester form becomes predominant over the free B1 in March and May and even to twice in amount in the latter month seem to be physiologically suggestive. As to the best season for the collection of these algae, it may be said that December and May are recommendable for Enteromorpha compressa and Ulva pertusa, respectively.

著者

• 三田 喜代

  広島女子短期大学

関連論文

• 緑藻類の化学的研究-I : 「アオノリ」,「アナアオサ」の季節に関する生化学的研究
• 緑藻類の化学的研究-III : 「アオノリ」，「アナアオサ」およびその粘質物の無機成分について
• フノリの粘質物の研究-I : フノリの無機成分について

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