论文部分内容阅读
芦荟为百合科植物,芦荟中的化学成分是蒽醌类化合物,它是芦荟苷的主要天然活性成分,能吸收紫外线,具有较好的防晒作用,通过物理和化学方法进行提取。试验以乙醇提取法、乙酸乙酯提取法、水浴回流提取法、超声波提取法和微波提取法为基础,探讨不同提取方法对芦荟苷产率的影响,通过差异显著性分析确定最佳提取方法为微波提取法(芦荟苷产率0.78%,p<0.01),最优参数:乙醇体积分数46%,料液比1︰12 g/mL,浸润时间40 min,微波处理时间40 s,芦荟苷产率为0.78%±0.03%。在微波法最优参数下提取出的芦荟苷,从温度、酸碱度两方面进行稳定性分析,得出芦荟苷保存条件:最适温度15℃、最适pH 1。
Aloe are Liliaceae plants. The chemical constituents of Aloe vera are anthraquinones, which are the main natural active ingredients of Aloin. They can absorb UV light, have good sun protection and are extracted by physical and chemical methods. The effects of different extraction methods on the yield of aloin were studied based on ethanol extraction, ethyl acetate extraction, water bath reflux extraction, ultrasonic extraction and microwave extraction. The optimal extraction method was determined by the difference analysis The optimal parameters were: ethanol volume fraction 46%, solid-liquid ratio 1︰12 g / mL, infiltration time 40 min, microwave treatment time 40 s, microwave extraction method (aloin yield 0.78%, p <0.01) The rate was 0.78% ± 0.03%. The optimum conditions of microwave extraction of aloin, from the temperature, pH stability analysis of two aspects, obtained aloin preservative conditions: the optimum temperature of 15 ° C, the optimum pH 1.