气相色谱法分析北方水果中膳食纤维的单糖组成  

Determination of Monosaccharide Composition in Dietary Fiber of Fruits in Northern China by GC Chromatography

作　　者：吕明霞[1] 李媛[1] 张飞[1] 何童森[1] 侯栋[1] 王洋[1] 崔同[1] 

机构地区：[1]河北农业大学食品科技学院,河北保定071000

出　　处：《中国食品学报》2012年第2期213-218,共6页Journal of Chinese Institute Of Food Science and Technology

摘　　要：采用糖腈乙酰化衍生GC法分析中国北方地区7种水果(苹果、梨、桃、杏、山楂、草莓和桑椹)膳食纤维(DF)的含量和单糖组成,结果表明这些水果中总膳食纤维(TDF)含量在0.26%(杏)～1.17%(桃)之间,其中水溶性膳食纤维(SDF)占TDF的比例在38.5%(杏)～86.3%(桃)之间。半乳糖醛酸是SDF的主要成分,占33.1%(桑椹)～91.1%(山楂)之间。不溶性膳食纤维中除含有较高比例的半乳糖醛酸(4.5%～46.5%)外,阿拉伯糖(9.4%～37.7%)、半乳糖(8.3%～24.2%)、木糖(8.7%～20.3%)和岩藻糖(8.0%～23.7%)也有相当含量,葡萄糖的比例在0.7%(桃)～15.6%(山楂)之间,甘露糖和鼠李糖的比例在6%以下。不同水果之间DF的单糖组成差异明显。Using GC method analyzed dietary fiber （DF） contents and monosaccharide composition of seven kinds of northern China fruits （apple, pear, peach, apricot, Chinese hawthorn, strawberry and mulberry）. The results indicated that total dietary fiber （TDF） contents in these fruits was between 0.26% （apricot） and 1.17%（peach）, SDF/TDF ranged from 38.5% （apricot） to 86.3% （peach）. Galacturonic acid was the main component in SDF, between 33.1% （mulberry） and 91.1% （Chinese hawthorn）. The insoluble dietary fiber （IDF）, not only had a high content of galactaronic acid （4.5% and 46.5%）, but also had a considerable contents of arabinose （9.4% and 37.7%）, galactose （8.3% and 24.2%）, xylose （8.7% and 20.3%） and fucose （8.0% and 23.7%）, the ratio of glucose ranged between 0.7% （peach） and 15.6% （Chinese hawthorn）, the ratio of mannose and rhamnose was below 6%. Different kinds of fruits had significantly different monosaccharide composition in DF.

关 键 词：水果 膳食纤维 多糖 单糖 气相色谱法 

分 类 号：TS255.7[轻工技术与工程—农产品加工及贮藏工程] O657.71[轻工技术与工程—食品科学与工程]