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Open AccessArticle

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

by Jian Sun 1,*, Xue-Mei He 2,3, Mou-Ming Zhao 1,*, Li Li 2,3, Chang-Bao Li 2,3 and Yi Dong 1
1
College of Light Industry and Food Sciences, South China University of Technology, Guangzhou 510640, China
2
Agro-food Science and Technology Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China
3
Guangxi Crop Genetic Improvement Laboratory, Nanning 530007, China
*
Authors to whom correspondence should be addressed.
Molecules 2014, 19(9), 13147-13160; https://doi.org/10.3390/molecules190913147
Received: 4 July 2014 / Revised: 15 August 2014 / Accepted: 15 August 2014 / Published: 26 August 2014
(This article belongs to the Special Issue Natural Antioxidants and Ageing)
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. View Full-Text
Keywords: sugarcane tops; phenolic compounds; identification; antioxidant capacity; nitrite-scavenging capacity sugarcane tops; phenolic compounds; identification; antioxidant capacity; nitrite-scavenging capacity
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Sun, J.; He, X.-M.; Zhao, M.-M.; Li, L.; Li, C.-B.; Dong, Y. Antioxidant and Nitrite-Scavenging Capacities of Phenolic Compounds from Sugarcane (Saccharum officinarum L.) Tops. Molecules 2014, 19, 13147-13160.

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