書誌事項
- タイトル別名
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- Studies on the Amylase Production by Submerged Culture
- Aspergillusゾク ノ Submerged Culture ニ ヨル Amylase セイサン ニ カンスル ケンキュウ 1 Amylase セイサン ニ オヨボス バイヨウ ジョウケン ノ エイキョウ
- Part 1. The Cultureal Environments affected to the Amylase Production
- (第1報)Amylase生産に及ぼす培養條件の影響
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Among the selected strains of Aspergillus oryzae group, the strain No. 0-9-5 (which of Tokyo) gave excellent anfylase activity for the submerged production.. By using this strain, several resea-rches concerning the cultural environments affecting the amylase production were carried out. It was shown that the optimal initiall pH for incubation lay between 5 and 6 the activity markedly fell down under 4.0 and amylase action was completely inhibited or destroyed under 3.0. The incubation at 30°C was more favorable than at 25°C. When starch and peptone were taken as C and N sources, the optimal concentrations of both of these substrates were about 2 to 3%, NaNO3 and NH4NO3 were suitable inorganic N sources, because these substances played buffer actior during the incubation, viz., they prevented the acidification due to the acid production. As natura; organic N sources, rice bran, wheat bran, dry yeast and stillage showed the excellent results.<br> Amylase production, provided that the cultural conditions were normal, reached to maximun after 3 days' incubation which coincided with the maximum utilization of N by fungus mycelliun and then the activity fell down according to the autolysis and pH rising of the culture medium.
収録刊行物
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- 日本農芸化学会誌
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日本農芸化学会誌 25 (7), 352-357, 1951
公益社団法人 日本農芸化学会
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詳細情報 詳細情報について
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- CRID
- 1390001204535214464
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- NII論文ID
- 130001216914
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- NII書誌ID
- AN00196191
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- ISSN
- 18836844
- 00021407
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- NDL書誌ID
- 10060642
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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- 使用不可