芦荟凝胶的稳定性考察及其有效期预测

Stability and Validity Duration of Aloe Gel

目的:考察芦荟凝胶在高温、低温、高湿、光照条件下的稳定性,并预测其室温贮存的有效期。方法:采用苯酚-硫酸法测定芦荟凝胶中芦荟多糖的含量;分别在高温、低温、高湿、光照条件下放置,于规定时间取样,观察样品外观、pH值、含量的变化;采用初均速法预测有效期。结果:本品含量与温度相关性较大,光照及湿度的影响不明显;室温(25℃)贮存的有效期为1a。结论:芦荟凝胶宜于常温阴凉处贮藏。

OBJECTIVE： To study the stability of Aloe gel under conditions of high and low temperature, high humidity and high light and to predicate its validity duration stored under room temperature, METHODS： The content of Polysaceharide in the gel was determined by phenol - sulfuric acid method. Aloe gel was put under the conditions of high temperature, low temperature, high-relative humidity, and high light to investigate the changes in appearance, pH and content. The expiry term of Aloe gel was predicted by initial average rate method, RESULTS： The content was highly correlated to temperature, but it had little correlation with light and humidity, The validity duration for Aloe gel at room temperature （25 ℃） is expected to be 1 year. CONCLUSION： Aloe gel should be cool-stored under room temperature,