Welcome to Chemistry and Industry of Forest Products,

Chemistry and Industry of Forest Products ›› 2022, Vol. 42 ›› Issue (6): 64-68.doi: 10.3969/j.issn.0253-2417.2022.06.009

Previous Articles     Next Articles

Synthesis and Antioxidant Activity of 1, 2, 3, 5, 6, 7-Hexahydroxy-9, 10-Anthraquinone

Xiang LEI, Minfeng ZHANG, Kexin HU, Yu KE, Deyong ZHENG()   

  1. College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China
  • Received:2021-12-23 Online:2022-12-28 Published:2023-01-07
  • Contact: Deyong ZHENG E-mail:ffczdy@163.com

Abstract:

1, 2, 3, 5, 6, 7-hexahydroxy-9, 10-anthraquinone was synthesized by Friedel-Crafts acylation reaction using gallic acid as raw material and methanesulfonic acid as catalyst. The structure of the target product was verified by ultraviolet-visible(UV-vis) spectroscopy, Fourier transform infrared(FT-IR) spectroscopy, nuclear magnetic resonance(NMR) spectroscopy, and liquid chromatography-mass spectrometry(LC-MS) spectroscopy. The antioxidant activities in vitro of hexahydroxy-anthraquinone were evaluated in terms of its scavenging abilities on ABTS radical (ABTS+·), DPPH radical(DPPH·) and superoxide anion radical (O2-·). The results showed that the molar absorbance coefficient(ελmax) of 1, 2, 3, 5, 6, 7-hexahydroxy-9, 10-anthraquinone at the maximum absorption wavelength of 293 nm was 3.25×104 L/(cm·mol), which was two times higher than that of the commonly used UV absorber 4-methoxycinnamic acid-2-ethylhexyl ester(OMC), indicating that it was an excellent UV absorber in UVB band. The half-inhibitory concentrations(IC50) of hexahydroxy-anthraquinone for the scavenging of ABTS+·, DPPH·, and O2-· were 42.1, 39.4, and 30.8 μmol/L, respectively. The scavenging ability of it on ABTS+· and DPPH· was stronger than that of Vc, but weaker than that of gallic acid, and the scavenging ability of it on O2-· was stronger than those of Vc and gallic acid.

Key words: Friedel-Crafts reaction, gallic acid, 1, 2, 3, 5, 6, 7-hexahydroxy-9, 10-anthraquinone, antioxidant activity in vitro, UV-absorber

CLC Number: