Fourier Transform Infrared characterization of Pai wood (Afzelia africana Smith) extractives

被引：55

作者：

Ajuong, EMA ^{[1
]}

Breese, MC ^{[1
]}

机构：

[1] Univ Coll N Wales, Sch Agr & Forest Sci, Bangor LL57 2UW, Gwynedd, Wales

来源：

HOLZ ALS ROH-UND WERKSTOFF | 1998年 / 56卷 / 02期

关键词：

Condensed Tannin; Cell Lumina; Extractive Component; Aromatic Nature; Saturated Ester;

D O I：

10.1007/s001070050285

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：

The major functional groups of the various extractive components recovered from pal wood using organic solvents and hot water have been identified and assigned by means of Fourier transform infrared analyses. The analyses revealed that the components removed by toluene, found mainly in cell lumina and/or lumina surfaces, were predominantly of non-polar, aliphatic compounds such as fatty acids and their monohydric esters. Gummy substances were also evident as well as minor amounts of materials of aromatic nature. The extract fractions recovered using ethanol and hot water, derived principally from within cell walls, consisted of cyclized aromatic components of increased polarity. It has been demonstrated that these components are tannins.

引用

页码：139 / 142

页数：4

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