正交试验研究枸杞多糖的微波辅助提取

Study on Microwave-Assisted Extraction of Lycium Barbarum Polysaccharides by Orthogonal Test

以枸杞多糖相对含量为考察指标,采用正交试验法考察微波火力、提取时间及提取温度对枸杞多糖提取效率的影响,并与常规热水回流提取法进行了比较.结果表明,微波辅助提取的最佳条件为提取温度120℃,微波火力为3,在此条件下提取2次,每次24 min.与常规提取法相比,微波辅助提取技术具有提取时间短、提取率高等优点.

To study microwave-assisted extraction（MAE） of Lycium barbarum polysaccharide（LBP） from Lyciurn barbarum L, the content of LBP was served as indicating index, the extraction conditions were optimized by orthogonal test to investigate the key factors, such as extraction temperature, microwave power, and extraction duration. Results showed that the optimal condition was extracting twice under the condition of 120℃, microwave power 3 and 24 minutes. Compared with conventional water extraction, MAE is less time-consuming, higher extract yield, and promises to be a rapid and efficient extraction method for extracting LBP from Lycium barbarum L.