請用此 Handle URI 來引用此文件: http://hdl.handle.net/11455/34053
標題: Extraction and purification of flavanone glycosides and kaemferol glycosides from defatted Camellia oleifera seeds by salting-out using hydrophilic isopropanol
作者: Chen, J.H.
張傑明
Liau, B.C.
Jong, T.T.
Chang, C.M.J.
鍾婷婷
關鍵字: Salting-out
Defatted Camellia oleifera seeds
Kaemferol glycosides
Flavanone glycosides
Isolation using column chromatography
ultrasound-assisted extraction
rat-kidney
in-vitro
naringin
antioxidant
behavior
petunia
damage
期刊/報告no:: Separation and Purification Technology, Volume 67, Issue 1, Page(s) 31-37.
摘要: The purpose of this research was to investigate a salting-out procedure for isolating four flavonoid glycosides from defatted Camellia oleifera seeds. The procedure included extraction with 80% methanol, methanol removal and addition of an equal amount of hydrophilic isopropanol and salt to separate the isopropanol fraction from the water layer. Using successive column chromatography, kaemferol-3-O-[2-O-beta-D-glucopyransoyl-6-O-alpha-L-rhamnopyranosyl]-beta-D-glucopyranoside (compound 1), kaemferol-3-O-[2-O-beta-D-xylopyranosyl-6-O-alpha-L-rhamnopyranosyl]-beta-D-glucopyranoside (compound 2), naringenin-7-O-[beta-D-xylopyranosyl(1 -> 6)][beta-D-glucopyranosyl(1 -> 3)-alpha-L-rhamnopyranosyl(1 -> 2)]-beta-D-glucopyranoside (compound 3) and naringenin-7-O-beta-D-xylopyranosyl(1 -> 6)-beta-D-glucopyranoside (compound 4) were obtained. The structure of compound 3, a new flavanone glycoside, was analyzed using UV, FT-IR, (1)H NMR, (13)C NMR and HR-FAB-MS. Quantification using high-performance liquid chromatography (HPLC) demonstrated that defatted C. oleifera seed cake contains 7.92, 17.7, 2.23 and 1.06 mg/g of the four compounds. The extraction efficiencies of the four compounds were increased by 23.17%, 7.59%, 48.67% and 47.22% from those obtained with n-butanol partition extraction. This new extraction technique is simpler, faster and less expensive than the traditional extraction method. Accordingly, this salting-out method can potentially replace the existing one. (C) 2009 Elsevier B.V. All rights reserved.
URI: http://hdl.handle.net/11455/34053
ISSN: 1383-5866
文章連結: http://dx.doi.org/10.1016/j.seppur.2009.02.020
顯示於類別:化學系所

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