Ruminant Feed Production from Wood by Steaming-Extraction Method (I) -Effect of Solvent Extraction on Asplund Pulp and Steam Exploded Wood-

증기(蒸氣)-추출(抽出) 방법(方法)에 의한 목질계(木質系)로부터의 조사료(粗飼料) 생산(生産) (I) -용매(溶媒) 추출(抽出)이 폭쇄재(爆碎材) 및 열해섬(熱解纖) 펄프에 미치는 영향(影響)-

Steam defiberated pulp and steam exploded wood(birch chip) were extracted with solvents (hot-water, 1% NaOH, MeOH, hot water, 1% NaOH). The properties of residual fiber were examined for the utilization as ruminants feed. The digestibility is 38% in steam defiberated pulp(10kg /$cm^2$-15min) and 62-77% in exploded wood(17-18kg/$cm^2$-2~10min), respectively. The more steam pressure and time increase, the more the digestibility increase. The sugars obtained from extractives is amount from 7% to 13% in asplund pulp and from 7% to 10% in exploded pulp. The sugars was mainly composed of 70-80% xylose. The digestibility of residual fiber which is extracted with solvents is low than these of original fibers. Considering the yield and digestibility as ruminant feed, exploded pulp under 17kg /$cm^2$ for 10min has the best efficiency. The exploded wood gives 75.3% on yield(O. D. chip) and 48% on the digestibility.