格氏栲天然林凋落物单宁提取工艺研究
发布时间：2018-08-04 09:19
【摘要】：为研究格氏栲天然林凋落物的单宁含量,对凋落物单宁提取的最佳工艺进行探讨。采用香草醛法测定单宁含量,将乙醇作为提取溶剂,选择乙醇浓度、浸提温度与溶剂体积等因素进行单因素和L_9(3~3)正交试验。结果表明:在乙醇浓度70%,提取温度80℃,乙醇体积15 m L的条件下,单宁提取效果最佳,提取单宁含量为30.58 mg/g。
[Abstract]:In order to study the tannin content of litter in natural forest of Castanopsis kawakamii, the optimum technology of extracting tannin from litter was studied. The content of tannin was determined by vanillin method, ethanol was used as extraction solvent, ethanol concentration, extraction temperature and solvent volume were selected to carry out single factor and LK9 (3K3) orthogonal experiments. The results showed that under the conditions of 70% ethanol concentration, 80 鈩，
本文编号：2163373
[Abstract]:In order to study the tannin content of litter in natural forest of Castanopsis kawakamii, the optimum technology of extracting tannin from litter was studied. The content of tannin was determined by vanillin method, ethanol was used as extraction solvent, ethanol concentration, extraction temperature and solvent volume were selected to carry out single factor and LK9 (3K3) orthogonal experiments. The results showed that under the conditions of 70% ethanol concentration, 80 鈩，
本文编号：2163373
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