采用筛分法从 10 个品种的甘薯渣中提取膳食纤维的组成及理化性质。
Composition and physicochemical properties of dietary fiber extracted from residues of 10 varieties of sweet potato by a sieving method.
机构信息
Laboratory of Food Chemistry and Nutrition Science, Institute of Agro-Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, China.
出版信息
J Agric Food Chem. 2010 Jun 23;58(12):7305-10. doi: 10.1021/jf101021s.
Dietary fiber (DF) was extracted from sweet potato residues after starch isolation of 10 varieties using a sieving method. The proximate composition of sweet potato residues, chemical composition, monosaccharide composition, and physicochemical properties of DF were investigated. The average yield and DF content of DF products from 10 sweet potato varieties were 9.97 and 75.19%, respectively. Average contents of cellulose, lignin, pectin, and hemicellulose were 31.19, 16.85, 15.65, and 11.38 g/100 g of dry matter in DF products, respectively. The relative monosaccharide contents of DF were in the order glucose > uronic acid > galactose > arabinose > xylose > rhamnose > mannose. Swelling capacity, water-holding capacity, oil-holding capacity, and glucose absorption capacity determinations of the DF of sweet potato varieties had respective ranges of 8.11-12.56 mL/g, 3.54-6.15 g/g, 1.43-2.48 g/g, and 0.54-1.27 mmol/g. DF of the 10 varieties had clear differences in characteristics and physicochemical properties.
薯渣膳食纤维的提取
10 个品种的淀粉分离后，采用筛分法提取薯渣膳食纤维。研究了薯渣膳食纤维的基本成分、化学组成、单糖组成和理化性质。10 个品种的薯渣膳食纤维产品的平均得率和膳食纤维含量分别为 9.97%和 75.19%。膳食纤维产品中纤维素、木质素、果胶和半纤维素的平均含量分别为 31.19、16.85、15.65 和 11.38 g/100 g 干物质。薯渣膳食纤维的相对单糖含量顺序为葡萄糖＞ 糖醛酸＞半乳糖＞阿拉伯糖＞木糖＞鼠李糖＞甘露糖。薯渣品种膳食纤维的膨胀能力、持水能力、持油能力和葡萄糖吸收能力的测定范围分别为 8.11-12.56 mL/g、3.54-6.15 g/g、1.43-2.48 g/g 和 0.54-1.27 mmol/g。10 个品种的薯渣膳食纤维在特性和理化性质上有明显差异。
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