摘要
采用常压水浸渍、真空水浸渍、常压碱液浸渍3种浸渍方式对毛竹进行处理,探讨不同浸渍方式对毛竹中淀粉含量的影响。研究结果表明:竹材内淀粉含量随着浸渍处理时间的延长而减少,经过120 h浸渍后,毛竹中的淀粉含量从高到低依次为常压水浸渍、真空水浸渍、常压碱液浸渍。在相同碱液浓度的条件下,毛竹中的淀粉含量随着浸渍时间的增加而减小。经过120 h的碱液浸渍处理,碱液浓度最大(1.5%)的组溶解抽提出来的淀粉含量最多。真空水浸渍可以降低毛竹中的淀粉含量,但不同真空压力之间对淀粉含量的影响不大,真空压力对淀粉含量的影响有效时间为72 h以内,超过72 h淀粉含量减少缓慢。
In this study, samples of moso bamboo were subjected to 3 impregnation treatments： atmospheric impregnation with water, atmospheric impregnation with alkaline, or vacuum impregnation with water. The influence of different impregnations on starch content in moso bamboo was studied. The results showed that the starch content in moso bamboo decreased with the treatment time. After 120-hour-long treatments, the sample ranking according to starch content in descending order was： samples impregnated with water in atmospheric condition, samples impregnated with water in vacuum condition and samples impregnated with alkaline in atmospheric condition. As the alkaline concentration was kept constant, the sample starch content was found decreasing with prolonged impregnation time. The 120-hour-long alkaline treatments showed that the highest alkaline concentration of 1.5% resulted in the highest amount of extracted starch. Vacuum impreg- nation with water could lower starch content in moso bamboo, but the influence of vacuum level was rather limited. The influence of vacuum condition was mainly observed in the first 72 h of the treatment, after which, the decrease of starch content was not significant.
出处
《林业科技开发》
北大核心
2012年第5期105-107,共3页
China Forestry Science and Technology
基金
江苏高校优势学科建设工程项目
江苏省研究生创新基金(CXLX11-0537)
关键词
竹材
常压水浸渍
真空水浸渍
常压碱液浸渍
淀粉含量
bamboo
atmospheric impregnation with water
vacuum impregnation with water
atmospheric impregnation with alkaline
starch content
