从剑麻的麻渣、纤维中提取果胶，测定果胶的含量、纯度和酯化度。将湿麻渣在密封与敞开空气中自然发酵后提取果胶，探讨湿麻渣在发酵后对果胶品质的影响。结果表明，果胶得率最高的是湿麻渣（13.342％），最低的是直纤维（0.450％），干麻渣的果胶得率（1.662％）略高于湿纤维（1.326％）与乱纤维（1.264％）的；果胶纯度最高的是直纤维（73.360％），最低的是干麻渣（32.567％）。直纤维果胶的酯化度（45.452％）略大于麻渣和乱纤维的（32％～35％）；湿麻渣经过自然发酵后，果胶得率与纯度均降低，但湿麻渣完全发酵后的果胶酯化度（33.432％）接近于干麻渣的（33.156％）。%To extract pectin from sisal residue and fiber , the content , purity and esterification de-gree of pectin were determined.Pectin was extracted from fresh sisal residue after fermentation in the air-proof and ample air , and the effects on the quality of pectin were investigated.The results showed that fresh sisal residue yields the most pectin ( 13.342%) , and the fiber yields the least ( 0.450%) .The yield of pectin extracted from dry sisal residue (1.662%) was higher than these extracted from wet kinky fiber (1.326%) and dry kinky fiber ( 1.264%) slightly.The highest purity of pectin was from fiber (73.360%) , and the lowest was from dry sisal residue (32.567%) .The esterification degree of pec-tin extracted from fiber (45.452%) was higher than these of dry sisal residue and the kinky fiber (32%~35%) .The yield and purity of pectin decreased while the fresh sisal residue was fermented in nature condition.But the result of esterification degree of pectin extracted from sisal residue ( 33.432%) fer-mented completely was close to the one of dry sisal residue (33.156%) .
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