Purification of total saponins in Sapindus mukorossi by continuous foam separation / 中草药

Objective: The continuous foam separation was adopted to optimize the process conditions for separation of tatal saponins in Sapindus mukorossi. Methods: Orthogonal test and spectrophotometry were employed to determine the optimum conditions of foam separation using the enrichment ratio, yield, and purity of total saponins in S. mukorossi as evaluating indexes. Results: The best condition of the process was as follows: gas flow rate of 0.6 L/min, feed height of 40 cm, liquid flow rate of 35 mL/min with initial feed total saponins in S. mukorossi at concentration of 20 mg/L with pH 4.40. Conclusion: The yield and purity of the isolated total saponins in S. mukorossi were 23.64% and 90.27%, respectively. The continuous foam separation could conduct in relatively simple equipment, low energy consuming and provide the possibility to future industrial applications.

Foam separation for protein of Catharsius molossus / 中草药

Objective To optimize the technique of foam separation from extract of Catharsius molossus.Methods Single factor test was used to examine the key operational parameters by using enrichment ratio,recovery rate,and protein content as the evaluation indexes.Results The best conditions were as follow: airflow velocity,feed concentration,pH value,feed volume,and temperature were 600 mL/min,0.050 g/mL,pH 4,1 000 mL,and room temperature,respectively.Under the condition,the enrichment ratio was 1.56,recovery rate was 85.6%,and protein content was 20.37%.Conclusion Foam separation could be used to concentrate and separate protein from extract of C.molossus with higher recovery rate and protein content.

Purification of sapindus-saponin by foam separation / 中成药

AIM: To adopt the foam separation to get the best condition of the process about separation-purification sapindus-saponin. METHODS: The orthogonal experiments was used to analyse the results of the process. RESULTS: The best condition of the process was 2.5 g/L feed concentration,0.9 L/min gas flow rate,pH 4.8 and the temperature of 30 ℃.Under this condition,the yield,concentration ratio and purity of sapindus-saponin was 69.42%,2.48,and 67.78%,respectively. CONCLUSION: The process is very simple and practical,which provides a base for the application of natural sapindus-saponin.