大麻快速生物脱胶过程中发酵液成分变化

为了探明大麻快速生物脱胶的机理，在实验室条件下，利用脱胶高效菌株Dm111,对大麻韧皮进行快速脱胶试验，定期测定了胶质去除率和发酵液中的相关指标。结果表明，在脱胶前期和中期，胶质去除率、脱胶菌活菌量不断增加，后期趋于平缓；果胶酶和木聚糖酶酶活均是脱胶前期增加缓慢，中期迅速增加，后期下降，而纤维素酶活在脱胶过程中变化不大，且酶活性很低；pH值呈“V”型变化；还原糖出现2个峰值，呈近似“M”型变化。发酵液的COD、蛋白质和残渣量与脱胶时间呈正相关。至脱胶完成时，残渣量占大麻韧皮的27％左右。

Composition change in fermentation broth in process of hemp fast microbial retting

In order to prove up the mechanism of hemp fast microbial retting,by using hemp retting high performance strain Dm111,the degumming rate and correlative parameter in fermentation broth was measured periodically in laboratory.The results indicated that quantity of viable organism and the degumming rate increased incessantly at prophase,then the trend became mild;the enzymatic activity of pectase and xylanase increased slowly at prophase,increased quickly at intermediate stage and degraded at anaphase.But the...