摘要
系统研究了皂荚皂素和油茶皂素的表面活性和泡沫性能,以及温度、盐度、水硬度、pH值等因素对皂素水溶液表面张力的影响。结果表明,皂荚皂素和油茶皂素水溶液临界胶束浓度(CMC)值(20℃)分别为0.1和1.5g/L,最低表面张力(γCMC)(20℃)分别为43.292和43.531mN/m,皂荚皂素表面活性高于油茶皂素。质量浓度2.5g/L的皂素水溶液,油茶皂素泡沫高度比皂荚皂素高25mm,油茶皂素起泡性能和稳泡性能均比皂荚皂素稍强。温度升高,油茶皂素和皂荚皂素的γCMC均呈现明显下降趋势,而CMC值基本不变;pH值偏低或偏高时,皂素的CMC值略有降低;皂荚皂素和油茶皂素均有较好的耐盐和抗硬水能力。
Surface activity and foaming performance of gleditsia saponin and camellia saponin were studied, and the effects of temperature, salinity, hardness of water and pH value on surface tension of their aqueous solution were also investigated. Values of critical micelle concentration （CMC） of gleditsia saponin and camellia saponin （20℃ ） were 0.1 and 1.5 g/L, respectively, and the lowest surface tension（γCMC） of which were 43. 292 and 43. 531 mN/m, respectively. The surface activity of gleditsia saponin was better than that of camellia saponin. The foaming height of 2.5 g,/L camellia saponin solution was higher than that of gleditsia saponin by 25 mm. Both foaming property and foam-stability of camellia saponin were better than those of gleditsia saponin. The higher the temperature, the lower the value of γCMC was, while values of CMC were almost unchanged. With the slight increase or decrease of pH value, CMC of saponins slightly decreased. Meanwhile, both gleditsia saponin and camellia saponin had good resistance against saline water and hard water.
出处
《林产化学与工业》
EI
CAS
CSCD
北大核心
2009年第2期69-74,共6页
Chemistry and Industry of Forest Products
基金
国家林业局林业科学技术推广项目(2008-18)
北京林业大学大学生创新计划(20080020,200705003)
关键词
皂荚皂素
油茶皂素
表面张力
泡沫性能
gleditsia saponin
camellia saponin
surface tension
foaming performance
