POLYSACCHARIDES OF COCOA POD HUSK
POLYSACCHARIDES OF COCOA POD HUSK
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DOI：
10.1002/jsfa.2740171208
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发表时间：
1966-01-01
影响因子：
4.1
通讯作者：
HODGE, RA
中科院分区：
文献类型：
--
作者：
BLAKEMORE, WR;DEWAR, ET;HODGE, RA
分别用热水、热0.5%草酸铵、冷10%氢氧化钾、热20%氢氧化钠提取加纳可可豆壳，透析后分离出不同的多糖组分。用50%的甲酸进行水解，定量测定各组分的糖含量，并通过制备结晶衍生物对糖进行表征，从而确定热水可溶部分。该组分的主要成分是含有D-半乳糖醛酸、D-半乳糖、L-鼠李糖和L-阿拉伯糖的果胶物质，但也含有其他几种多糖，特别是葡聚糖和甘露聚糖。草酸铵组分也是果胶，但以解聚的形式存在，而碱性萃取物的主要成分糖是木糖。不溶的谷壳残渣可能主要是纤维素。
Cocoa pod husk from Ghana was extracted successively with hot water, hot 0.5% ammonium oxalate, cold 10% potassium hydroxide, and hot 20% sodium hydroxide, and the various polysaccharide fractions isolated after dialysis. The hot-water-soluble fraction was examined by hydrolysis with 50% formic acid, quantitative determination of the component sugars, and characterisation of the sugars by preparation of crystalline derivatives. The major part of this fraction is a pectic material containing D-galacturonic acid, D-galactose, L-rhamnose and L-arabinose, but is contaminated with several other polysaccharides, notably a glucan and a mannan. The ammonium oxalate fraction is also a pectin but in a depolymerised form, while the main component sugar of the alkaline extracts is xylose. The insoluble husk residue is probably chiefly cellulose.