Optimization of the Technology for Production of Instant Polygonatum Powder by Response Surface Design

PurposePolygonatum is a traditional Chinese edible and medicine herbs, but the deep process product of polygonatum is rare. In this study, the extraction methods were optimized by response surface design, technology for production of instant tea power of polygonatum was developed.

MethodThe extraction methods were optimized through single factor experiment of ethanol volume fractions (0%, 20%, 40%, 60%, and 80%) and ratios of material to liquid (1∶5, 1∶10, 1∶15, 1∶20, 1∶25 and 1∶30), climbing experiment and response surface design.

ResultThe technology for production of instant tea power of polygonatum was as following: the polygonatum was extracted by 28 times (m/V) of 65% ethanol solution for 2 d, and then was filtrated; concentrated to 1/3 volume using vacuum rotatory evaporator at 50 ℃, and addition of 2% of dextrin, then was spray dried at 170 ℃. The content of polysaccharides in processed instant powder was 7.98%, and sensory evaluation showed that the flavor and taste were good.

ConclusionA kind of instant polygonatum powder, which has good taste, was developed. It has a certain market prospect.