Effect of hydroxyl on antioxidant properties of 2,3-dihydro-3,5-dihydroxy-6-methyl-4<i>H</i>-pyran-4-one to scavenge free radicals
作者:Zhifei Chen、Qiang Liu、Zhiwei Zhao、Bing Bai、Zhitao Sun、Lili Cai、Yufeng Fu、Yuping Ma、Qingfu Wang、Gaolei Xi
DOI:10.1039/d1ra06317k
日期:——
the antioxidant properties of Maillard reaction intermediates. A series of hydroxyl group protected DDMP derivatives were synthesized to further understand the source of antioxidant activity. Antioxidant abilities of the DDMP derivatives were evaluated by scavenging the 2,2′-azinobis(3-ethylbenzothiazoline-6-sulfonate) cationic radical (ABTS˙+), 2,2′-diphenyl-1-picrylhydrazyl radical (DPPH), and galvinoxyl
众所周知,2,3-二氢-3,5-二羟基-6-甲基-4 H-吡喃-4-酮(DDMP)通常在美拉德反应中形成,它有助于美拉德反应中间体的抗氧化性能。合成了一系列羟基保护的DDMP衍生物,以进一步了解抗氧化活性的来源。通过清除2,2'-偶氮双(3-乙基苯并噻唑啉-6-磺酸盐)阳离子自由基(ABTS˙ + )、2,2'-二苯基-1-三硝基苯肼自由基(DPPH)和分别为加尔万氧基自由基。研究发现,向DDMP的游离羟基中引入保护基会降低其还原能力。特别是烯烃位的羟基对DDMP的抗氧化活性影响显着,表明DDMP部分不稳定的烯醇结构是其抗氧化活性的关键因素。