Chemical characterization of different granulometric fractions of grape stalks waste

被引：48

作者：

Pujol, David ^{[1
]}

Liu, Chang ^{[1
]}

Fiol, Nuria ^{[1
]}

Angels Olivella, M. ^{[2
]}

Gominho, Jorge ^{[3
]}

Villaescusa, Isabel ^{[1
]}

Pereira, Helena ^{[3
]}

机构：

[1] Univ Girona, Dept Chem Engn, Escola Politecn Super, Girona 17071, Spain

[2] Univ Girona, Dept Chem, Fac Ciencies, Girona 17071, Spain

[3] Univ Tecn Lisboa, Ctr Estudos Forestais, Inst Super Agron, P-1349017 Lisbon, Portugal

来源：

INDUSTRIAL CROPS AND PRODUCTS | 2013年 / 50卷

关键词：

Grape stalks; Chemical composition; Granulometric fractions; Extractives; FTIR; AQUEOUS-SOLUTIONS; LIPOPHILIC EXTRACTIVES; ANTIOXIDANT; REMOVAL; BARKS; CORK; CONSTITUENTS; SORPTION;

D O I：

10.1016/j.indcrop.2013.07.051

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The chemical composition of grape stalks wastes from wine production was investigated after milling and separation in three different size material fractions. The chemical characterization included summative composition, total polyphenols, condensed tannins, lipophilic extractives ash composition, determination of acidic functional groups and FTIR analysis. Extractives are the main components of grape stalks, especially polar extractives soluble in hot water and in 1% NaOH. The milling and separation process results in an enrichment of extractives and ash in the finest fraction and conversely, an enrichment of structural components in the largest fractions. The bands obtained by FTIR analysis confirm the presence of lignin, polysaccharides and polyphenolic compounds. The results of this research show that fractioning of grape stalks waste is a way to enrich the material in target valuable components and to improve efficiency of resource utilization. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：494 / 500

页数：7

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