滇黄精皂苷饮料的研制及DPPH自由基清除能力

Study on Polygonatum kingianum Coll.et Hemsl Extracts(Saponins)Beverage and the Scavenging Ability of DPPH Free Radical

为使滇黄精皂苷得到更广泛与合理的利用,以滇黄精根茎中提取的皂苷为主要原料,竹叶黄酮、甜菊糖苷为辅料,以感官评价为标准,通过单因素试验和响应面优化试验进行配方优化,结果表明:最佳配方为滇黄精皂苷提取液36%、竹叶黄酮30%、甜菊糖苷0.04%,此配方下测得的滇黄精皂苷饮料可溶性固形物含量为0.8%, pH为5.43,滇黄精总皂苷含量为1.75 mg/100 mL。该饮料对DPPH自由基清除率达到59.81%。

In order to make the saponins of P.kingianum be more widely and reasonably utilized,the saponins extracted from the roots and stems of P.kingianum were used as the main raw materials,and bamboo leaf flavonoids and steviol glycosides were used as auxiliary materials.Sensory evaluation was used as the standard,and the formula was optimized through single factor experiments and response surface optimization experiments.The results showed that the optimized formula was soluble solids in P.kingianum saponin extract of 36%,bamboo leaf flavonoids of 30%,and steviol glycosides of 0.04%.Under this formula,the soluble solid content of P.kingianum saponin beverage was measured to be 0.8%,pH was 5.43,and the total saponin content of P.kingianum was 1.75 mg/100 mL.The beverage had a DPPH free radical scavenging rate of 59.81%.