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Molecules 2014, 19(9), 13147-13160; doi:10.3390/molecules190913147

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

1,* , 2,3
,
1,* , 2,3
,
2,3
and
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.
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)
View Full-Text   |   Download PDF [715 KB, uploaded 26 August 2014]   |  

Abstract

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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MDPI and ACS Style

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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