In this study, tannin was extracted from mountain walnut shells with organic solvent method. The extraction rate of tannin was affected by various fac- tors, including solvents, extraction temperature, extraction time...In this study, tannin was extracted from mountain walnut shells with organic solvent method. The extraction rate of tannin was affected by various fac- tors, including solvents, extraction temperature, extraction time, and solid-liquid ratios. L9 (4^3 ) orthogonal experimental design was employed. The content of tannin in the extraction solution was determined with zinc ion eomplexometrie titration method. According to the experimental methods, the optimal extraction condi- tions were as follows: extraction solvent water, extraction time 12 h, extraction temperature 50 ℃, solid-liquid ratio 1: 6.展开更多
文摘In this study, tannin was extracted from mountain walnut shells with organic solvent method. The extraction rate of tannin was affected by various fac- tors, including solvents, extraction temperature, extraction time, and solid-liquid ratios. L9 (4^3 ) orthogonal experimental design was employed. The content of tannin in the extraction solution was determined with zinc ion eomplexometrie titration method. According to the experimental methods, the optimal extraction condi- tions were as follows: extraction solvent water, extraction time 12 h, extraction temperature 50 ℃, solid-liquid ratio 1: 6.