發(fā)布時間：2018-08-04 09:19

【摘要】：為研究格氏栲天然林凋落物的單寧含量,對凋落物單寧提取的最佳工藝進行探討。采用香草醛法測定單寧含量,將乙醇作為提取溶劑,選擇乙醇濃度、浸提溫度與溶劑體積等因素進行單因素和L_9(3~3)正交試驗。結果表明:在乙醇濃度70%,提取溫度80℃,乙醇體積15 m L的條件下,單寧提取效果最佳,提取單寧含量為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，

本文編號：2163373