EFFECT OF THE BENCH SCALE EXTRACTION CONDITIONS ON Pinus radiata BARK EXTRACT YIELD, ANTIOXIDANT PROPERTIES AND COMPOSITION

被引：5

作者：

Ramos, Valentina ^{[1
]}

Bocalandro, Carlos ^{[2
]}

Riquelme, Sebastian ^{[1
]}

Sanhueza, Veronica ^{[1
]}

Aspe, Estrella ^{[1
]}

Roeckel, Marlene ^{[1
]}

Fernandez, Katherina ^{[1
]}

机构：

[1] Univ Concepcion, Fac Ingn, Dept Ingn Quim, Concepcion, Chile

[2] Unidad Desarrollo Tecnol, Concepcion, Chile

来源：

MADERAS-CIENCIA Y TECNOLOGIA | 2013年 / 15卷 / 01期

关键词：

Antioxidant; bark; bench scale; extraction conditions; TOTAL PHENOLIC CONTENT; PLANT-EXTRACTS; GRAPE; PROANTHOCYANIDINS; PROCYANIDINS; ACID;

D O I：

10.4067/S0718-221X2013005000003

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

Many pine bark extracts have antioxidant properties. This work examined bench scale extraction on the yield, the composition and antioxidant properties of Pinus radiata. Acetone solvent (98.7% w/w at 120 degrees C) yielded maximum phenols concentration, tannins concentration, anti-radical activity (DPPH) and reducing activity (FRAP), although its extraction yield was the lowest. When the organic solvent in the mixture decreased, the chelating activity increased (ICA) and antiradical and reducing activities decreased. The extract largest yield was obtained with water at 120 degrees C, but the antioxidant properties were relatively poor. Taxifolin (dihydroquercetin) and catechin were the main extract components detected by RP-HPLC. The best extraction conditions for high extractive yield and antioxidant properties was achieved with ethanol/water at 120 degrees C.

引用

页码：31 / 44

页数：14

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