スズキの消化管におけるキチン分解作用に関する研究-I

奥谷 康一; 木俣 正夫

doi:10.2331/suisan.30.262

奥谷康一, 木俣正夫

著者情報

ジャーナルフリー

1964 年 30 巻 3 号 p. 262-266

DOI https://doi.org/10.2331/suisan.30.262

詳細

発行日: 1964/03/25 受付日: - J-STAGE公開日: 2008/02/29 受理日: 1963/10/30 早期公開日: - 改訂日: -
訂正情報
訂正日: 2008/02/29 訂正理由: - 訂正箇所: 論文抄録訂正内容: Wrong : Chitin is a substance which is widely distributed in the world of living things and especially it has been known as the principal constituent of shell of Crustacea. Therefore, it is imagined that chitinolytic enzyme may exist in digestive organs of fish, because many of Crustacea are consumed as their baits. Up to date, however, studies on this problem have been hardly reported.
The present study is carried out in order to ascertain whether the chitinolytic enzyme is present or not, in the digestive tracts of Japanese sea-bass, Lateolabrax japonicus.
Results obtained are as follows:
1) The chitinolytic enzyme is present in the stomach of Japanese sea-bass, but not or little in the pyloric caeca and the intestine (Table 1). 2) The enzyme is inherent in the fish itself, and its optimum pH value is at about 4 and the optimum temperature is at about 50°C (Fig. 2 and Fig. 3).
3) Substances which are formed by the action of the enzyme may be N-acetylglucosamine and N, N′-diacetylchitobiose (Fig. 4, Fig. 5 and Fig. 6).
Right : Chitin is a substance which is widely distributed in the world of living things and especially it has been known as the principal constituent of shell of Crustacea. Therefore, it is imagined that chitinolytic enzyme may exist in digestive organs of fish, because many of Crustacea are consumed as their baits. Up to date, however, studies on this problem have been hardly reported.
The present study is carried out in order to ascertain whether the chitinolytic enzyme is present or not, in the digestive tracts of Japanese sea-bass, Lateolabrax japonicus.
Results obtained are as follows:
1) The chitinolytic enzyme is present in the stomach of Japanese sea-bass, but not or little in the pyloric caeca and the intestine (Table 1). 2) The enzyme is inherent in the fish itself, and its optimum pH value is at about 4 and the optimum temperature is at about 50°C (Fig. 2 and Fig. 3).
3) Substances which are formed by the action of the enzyme may be N-acetylglucosamine and N, N'-diacetylchitobiose (Fig. 4, Fig. 5 and Fig. 6).

訂正日: 2008/02/29 訂正理由: - 訂正箇所: 引用文献情報訂正内容: 訂正前 : 3) 松本重一郎・金光庸俊:本誌, 21, 284 (1955).
17) HACKMAN, R. H.: Aust. J. Biol. Sci., 7, 168 (1954).

訂正後 : 3) 松本重一郎・金光庸俊:本誌, 21, 284 (1955).

訂正日: 2008/02/29 訂正理由: - 訂正箇所: PDFファイル訂正内容: -

抄録

Chitin is a substance which is widely distributed in the world of living things and especially it has been known as the principal constituent of shell of Crustacea. Therefore, it is imagined that chitinolytic enzyme may exist in digestive organs of fish, because many of Crustacea are consumed as their baits. Up to date, however, studies on this problem have been hardly reported.
The present study is carried out in order to ascertain whether the chitinolytic enzyme is present or not, in the digestive tracts of Japanese sea-bass, Lateolabrax japonicus.
Results obtained are as follows:
1) The chitinolytic enzyme is present in the stomach of Japanese sea-bass, but not or little in the pyloric caeca and the intestine (Table 1). 2) The enzyme is inherent in the fish itself, and its optimum pH value is at about 4 and the optimum temperature is at about 50°C (Fig. 2 and Fig. 3).
3) Substances which are formed by the action of the enzyme may be N-acetylglucosamine and N, N'-diacetylchitobiose (Fig. 4, Fig. 5 and Fig. 6).

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