ルーメン内微生物のセルロース分解性に及ぼす可溶性炭水化物の影響

概要

論文の詳細を見る
Cellulose digestion by rumen microorganisms in vitro was dependent on the amount and type of carbohydrate. The cellulose digestion was increased by the addition to medium of 0.2% glucose, 0.2 and 0.4% cellobiose, 0.2 and 0.4% maltose and 0.2 and 0.4% starch in final concentration but was decreased by the addition of 0.4 and 0.6%glucose, 0.6% cellobiose and 0.6% maltose, although starch addition of 0.6% caused neither increase nor decrease in cellulolytic activity. Preincubation of glucose, cellobiose, maltose or starch with rumen microorganisms for 6 hours considerably enhanced cellulolytic activity of rumen microorganisms in medium containing culture of the preincubation as a component, but no further appreciable increase in the activity was produced by longer period of the preincubation in all carbohydrate additions. The increase in cellulolytic activity on each carbohydrate addition with preincubation period of 12 hours was as follows : glucose : 36.5, cellobiose : 24.5, maltose : 22.0, starch : 9.7. The determination of total sugar in preincubation cultures grown on these carbohydrates showed remarkable decreases in added carbohydrates in the cultures to fully explain the increases in cellulolytic activity caused by the preincubation of carbohydrates and rumen microorganisms. The addition of VFAs, corresponding to the amount and type of VFA produced in preincubation cultures, to carbohydrate-containing medium for determination of cellulolytic activity produced higher cellulolytic activity than carbohydrate alone did at all levels of carbohydrate addition. The stimulatory effect of VFA on cellulose digestion appears to be partly involved in augmentation in cellulolytic activity by the preincubation of carbohydrate with rumen microorganisms.
信州大学農学部の論文
1983-12-26

著者

唐沢豊
信州大大学院

ルーメン内微生物のセルロース分解性に及ぼす可溶性炭水化物の影響

スポンサーリンク

概要

著者

関連論文

スポンサーリンク