Acta Agriculturae Zhejiangensis ›› 2023, Vol. 35 ›› Issue (11): 2710-2719.DOI: 10.3969/j.issn.1004-1524.20221517

• Quality and Safety of Agricultural Products • Previous Articles     Next Articles

Determination of flavonoids in Dendrobium officinale Kimura et Migo and study on its bioavailability

SUN Fengting1,2(), XU Zhenlan2, ZHU Zuoyi2, ZHANG Chunrong2, TANG Tao2, ZHAO Xueping2, SHENG Qing1,*(), WANG Qiang2,*()   

  1. 1. College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, China
    2. Key Laboratory for Pesticide Residue Detection, Ministry of Agriculture and Rural Affairs, Institute of Agro-Product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
  • Received:2022-10-26 Online:2023-11-25 Published:2023-12-04

Abstract:

A solid phase extraction-ultra performance liquid chromatography tandem mass spectrometry method was established to determine 17 flavonoid components in D. officinale. And meanwhile the in vitro method was used to simulate the digestive process and to analyze the bioavailability of flavonoids in D. officinale. The results showed that the total content of flavonoids in D. officinale was 1.52-4.36 mg·g-1. Naringenin, rutin and schaftoside were the three main flavonoid compounds in D. officinale. After gastrointestinal digestion, the bioavailability of total flavonoids was 13.75%-21.45%, and the bioavailability of naringin, rutin and schaftoside were 8.23%-18.37%, 1.85%-22.87% and 24.26%-42.65%, respectively. After further colonic digestion, the bioavailability of total flavonoids was 6.38%-14.13%, and the bioavailability of naringin, rutin and schaftoside were 2.12%-5.67%, 1.42%-5.70% and 5.34%-13.33%, respectively. The bioavailability of flavonoids in the gastrointestinal tract was greater than that in the colon phase. The antioxidant capacity followed D. officinale extract>gastrointestinal digestive juice>colon digestive juice, and the antioxidant capacity was positively correlated with the content of flavonoids.

Key words: Dendrobium officinale Kimura et Migo, flavonoids, bioavailability, antioxidant activity

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