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Antioxidant and Nitrite-Scavenging Capacities of Phenolic Compounds from Sugarcane (Saccharum officinarum L.) Tops

文献类型： 外文期刊

作者： Sun, Jian 1 ; He, Xue-Mei 2 ; Zhao, Mou-Ming 1 ; Li, Li 2 ; Li, Chang-Bao 2 ; Dong, Yi 1 ;

作者机构： 1.S China Univ Technol, Coll Light Ind & Food Sci, Guangzhou 510640, Guangdong, Peoples R China

2.Guangxi Acad Agr Sci, Agrofood Sci & Technol Res Inst, Nanning 530007, Peoples R China

3.Guangxi Crop Genet Improvement Lab, Nanning 530007, Peoples R China

关键词： sugarcane tops;phenolic compounds;identification;antioxidant capacity;nitrite-scavenging capacity

期刊名称：MOLECULES （ 影响因子：4.411； 五年影响因子：4.587 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： Sugarcane tops were extracted with 50% ethanol and fractionated by petroleum ether, ethyl acetate (EtOAc), and n-butyl alcohol successively. Eight phenolic compounds in EtOAc extracts were purified through silica gel and Sephadex LH-20 column chromatographies, and then identified by nuclear magnetic resonance and electrospray ionization mass spectra. The results showed that eight phenolic compounds from EtOAc extracts were identified as caffeic acid, cis-p-hydroxycinnamic acid, quercetin, apigenin, albanin A, australone A, moracin M, and 5'-geranyl-5,7,2',4'-tetrahydroxyflavone. The antioxidant and nitrite-scavenging capacities of different solvent extracts correlated positively with their total phenolic (TP) contents. Amongst various extracts, EtOAc extracts possessed the highest TP content and presented the strongest oxygen radical absorbance capacity (ORAC), 1,1'-diphenyl-2-picrylhydrazyl (DPPH) radical-scavenging capacity, 2,2'-azobis-3-ethylbenthiaazoline-6-sulfonic acid (ABTS) radical-scavenging capacity, ferric reducing antioxidant power (FRAP) and nitrite-scavenging capacity. Thus, sugarcane tops could be promoted as a source of natural antioxidant.

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