Chau Chi-Fai, Huang Ya-Ling
Department of Food Science, National Chung Hsing University, 250 Kuokuang Road, Taichung 40227, Taiwan, Republic of China.
J Agric Food Chem. 2003 Apr 23;51(9):2615-8. doi: 10.1021/jf025919b.
Fiber-rich fractions (FRFs) including soluble and insoluble dietary fibers (SDF and IDF), alcohol-insoluble solid (AIS), and water-insoluble solid (WIS) were isolated from the peel of Citrus sinensis L. cv. Liucheng for analysis and tests. The peel was rich in insoluble FRFs (IDF, AIS, and WIS; 476-515 g kg(-1) of peel), which were mainly composed of pectic substances and cellulose, and also contained pectic polysaccharide-rich SDF (94.1 g kg(-1) of peel). These insoluble FRFs had water-holding capacities (15.5-16.7 mL g(-1)), oil-holding capacities (2.35-5.09 g g(-1)), cation-exchange capacities (454-997 mequiv kg(-1)), and swelling properties (14.6-21.1 mL g(-1)) much higher than those of cellulose. These results recommended the consumption of these peel insoluble FRFs of desired physicochemical properties as sources of food fibers or low-calorie bulk ingredients in food applications requiring oil and moisture retention. Further investigations on the physiological functions of these peel FRFs using animal-feeding experiments are underway.
从柳城脐橙（Citrus sinensis L. cv. Liucheng）果皮中分离出富含纤维的部分（FRF），包括可溶性膳食纤维（SDF）和不溶性膳食纤维（IDF）、醇不溶性固体（AIS）和水不溶性固体（WIS），用于分析和测试。该果皮富含不溶性FRF（IDF、AIS和WIS；果皮含量为476 - 515 g kg(-1)），其主要由果胶物质和纤维素组成，还含有富含果胶多糖的SDF（果皮含量为94.1 g kg(-1)）。这些不溶性FRF的持水能力（15.5 - 16.7 mL g(-1)）、持油能力（2.35 - 5.09 g g(-1)）、阳离子交换能力（454 - 997 mequiv kg(-1)）和膨胀特性（14.6 - 21.1 mL g(-1)）远高于纤维素。这些结果表明，在需要保持油脂和水分的食品应用中，可将这些具有所需物理化学性质的果皮不溶性FRF作为膳食纤维或低热量填充成分的来源食用。目前正在通过动物喂养实验对这些果皮FRF的生理功能进行进一步研究。
