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	Antioxidant activity and chemical constituents of essential oil and extracts of Rhizoma Homalomenae
	Luo,ZH ; Zhu,JX ; Zhang,ZR ; Zeng,LB ; Luo ZH(罗正鸿)
	2011
关键词	Homalomena occulta Rhizoma Homalomenae Antioxidant activity Essential oil GC-MS LC-MS/MS HPLC
英文摘要	Antioxidant activity and composition of essential oil and extracts of Rhizoma Homalomenae were determined. The extracts, especially the ethyl acetate extract (QJ4 fraction) of the aqueous residue after oil distillation, had considerable antioxidant potency which was significantly associated with their total phenolic and flavonoid contents, but the essential oil showed only weak or moderate activity. GC-MS analysis of the essential oil (yield: 0.82%, v/w) resulted in the identification of 77 compounds, accounting for 96.5% of the content of the oil. The major components, epi-alpha-cadinol (14.8%), alpha-cadinol (14.8%), alpha-terpineol (13.8%), linalool (11.1%), terpinen-4-ol (4.92%), and delta-cadinene (4.91%) constituted 64.3% of it. LC-MS/MS and HPLC analyses showed seven phenolic compounds (protocatechuic acid, vanillic acid, syringic acid, caffeic acid, p-coumaric acid, ferulic acid and apigenin) with a great amount in the ethyl acetate extract (QJ4 fraction). The strong antioxidant properties of the plant extracts may be attributed to the presence of these phenolics. (C) 2010 Elsevier Ltd All rights reserved.
语种	英语
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/63135]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Luo,ZH,Zhu,JX,Zhang,ZR,et al. Antioxidant activity and chemical constituents of essential oil and extracts of Rhizoma Homalomenae[J],2011.
APA	Luo,ZH,Zhu,JX,Zhang,ZR,Zeng,LB,&罗正鸿.(2011).Antioxidant activity and chemical constituents of essential oil and extracts of Rhizoma Homalomenae..
MLA	Luo,ZH,et al."Antioxidant activity and chemical constituents of essential oil and extracts of Rhizoma Homalomenae".(2011).

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