Composition and chemical variability of the triterpene fraction of dichloromethane extracts of cork (Quercus suber L.)

被引：40

作者：

Castola, V

Bighelli, A

Rezzi, S

Melloni, G

Gladiali, S

Desjobert, JM

Casanova, J

机构：

[1] Univ Corse, CNRS, UMR 6134, Equipe Chim & BIomasse, F-20000 Ajaccio, France

[2] Univ Sassari, Dipartimento Chim, I-07100 Sassari, Italy

[3] Univ Corse, CNRS, UMR 6134, Lab Chim Prod Nat, F-20250 Corte, France

来源：

INDUSTRIAL CROPS AND PRODUCTS | 2002年 / 15卷 / 01期

关键词：

cork; extracts; C-13; NMR; chemometric analysis; chemical variability;

D O I：

10.1016/S0926-6690(01)00091-7

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Dichloromethane extracts were prepared from 38 samples of cork harvested in different locations of Corsica and Sardinia from individual trees of Quercus suber L. Friedelin, 3-alpha -hydroxyfriedelan-2-one, betulin, betulinic acid, beta -sitosterol and sitost-4-en-3-one were identified and their molar percentages were calculated by C-13 NMR spectroscopy, following a procedure recently developed by our group. The results were submitted to chemometric analysis (k-means and principal component analysis), which allowed three groups to be distinguished with respect to the content of friedelin, betulinic acid and 3-alpha -hydroxyfriedelan-2-one. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：15 / 22

页数：8

共 16 条

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BIGELLI A, 1994, BIOMASS BIOENERG, V6, P461

[2]

Caldas M.M, 1985, CORTICA, V560, P549

[3] Direct qualitative and quantitative analysis of triterpenes using 13C NMR spectroscopy exemplified by dichloromethanic extracts of cork [J].