Abstract
AbstractFlavonoid complexes have more biological activities than parent flavonoids, including antioxidant, anticancer, antibacterial, and many others. Selenium is an essential trace element for human body. Therefore, a quercetin‐Se complex was synthesized and analyzed in this paper, getting the results as following: (1) A light‐ yellow product was obtained with the max yield of 30.30 %. (2) The complex molecule contains two quercetin units and a selenoxyl group, called selenious acid acyl diquercetin. (3) It has a strong antioxidant activity with a maximum DPPH scavenging rate of 97.71 %. In addition, we prepared a skin cream containing 1 % quercetin selenium complex, and it has excellent antioxidant activity with a DPPH scavenging rate of 82.4 %. Therefore, the generated selenious acid acyl diquercetin is a potential antioxidant material for skin care products.
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