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Compositional analysis of Chinese water chestnut (Eleocharis dulcis) cell-wall material from parenchyma, epidermis, and subepidermal tissues.

Grassby, T, Jay, AJ, Merali, Z, Parker, ML, Parr, AJ, Faulds, CB and Waldron, KW (2013) Compositional analysis of Chinese water chestnut (Eleocharis dulcis) cell-wall material from parenchyma, epidermis, and subepidermal tissues. J Agric Food Chem, 61 (40). pp. 9680-9688.

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Abstract

Chinese water chestnut (Eleocharis dulcis (Burman f.) Trin ex Henschel) is a corm consumed globally in Oriental-style cuisine. The corm consists of three main tissues, the epidermis, subepidermis, and parenchyma; the cell walls of which were analyzed for sugar, phenolic, and lignin content. Sugar content, measured by gas chromatography, was higher in the parenchyma cell walls (931 μg/mg) than in the subepidermis (775 μg/mg) or epidermis (685 μg/mg). The alkali-extractable phenolic content, measured by high-performance liquid chromatography, was greater in the epidermal (32.4 μg/mg) and subepidermal cell walls (21.7 μg/mg) than in the cell walls of the parenchyma (12.3 μg/mg). The proportion of diferulic acids was higher in the parenchyma. The Klason lignin content of epidermal and subepidermal cell walls was ~15%. Methylation analysis of Chinese water chestnut cell-wall polysaccharides identified xyloglucan as the predominant hemicellulose in the parenchyma for the first time, and also a significant pectin component, similar to other nongraminaceous monocots.

Item Type: Article
Authors :
NameEmailORCID
Grassby, Tt.grassby@surrey.ac.ukUNSPECIFIED
Jay, AJUNSPECIFIEDUNSPECIFIED
Merali, ZUNSPECIFIEDUNSPECIFIED
Parker, MLUNSPECIFIEDUNSPECIFIED
Parr, AJUNSPECIFIEDUNSPECIFIED
Faulds, CBUNSPECIFIEDUNSPECIFIED
Waldron, KWUNSPECIFIEDUNSPECIFIED
Date : 9 October 2013
Identification Number : 10.1021/jf401863n
Uncontrolled Keywords : Angiosperms, Carbohydrates, Cell Wall, Chromatography, High Pressure Liquid, Coumaric Acids, Eleocharis, Glucans, Lignin, Pectins, Phenols, Plant Epidermis, Polysaccharides, Xylans
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 10:44
Last Modified : 17 May 2017 14:52
URI: http://epubs.surrey.ac.uk/id/eprint/828991

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