陕西科技大学学报（自然科学版）
陝西科技大學學報（自然科學版）
협서과기대학학보（자연과학판）
JOURNAL OF SHAANXI UNIVERSITY OF SCIENCE & TECHNOLOGY
2014年
2期
105-108,112
,共5页
挤压改性%苹果膳食纤维%水合性质
擠壓改性%蘋果膳食纖維%水閤性質
제압개성%평과선식섬유%수합성질
modification by screw extrusion%apple dietary fiber%hydration properties
以苹果渣中提取的粗膳食纤维为原料，利用单螺杆挤压机进行挤压改性，以提高其中水溶性膳食纤维（SDF）含量．结果表明，经挤压改性后，苹果膳食纤维中的SDF含量显著提高．最佳挤压工艺条件为：加水量40％，螺杆转速780 r／min ，物料粒度20目，此条件下得到SDF的含量为24．0％．试验研究了改性前后苹果膳食纤维水合性质的变化，结果表明，与原料相比，改性苹果膳食纤维的持水力、结合水力和膨胀力都显著提高．
以蘋果渣中提取的粗膳食纖維為原料，利用單螺桿擠壓機進行擠壓改性，以提高其中水溶性膳食纖維（SDF）含量．結果錶明，經擠壓改性後，蘋果膳食纖維中的SDF含量顯著提高．最佳擠壓工藝條件為：加水量40％，螺桿轉速780 r／min ，物料粒度20目，此條件下得到SDF的含量為24．0％．試驗研究瞭改性前後蘋果膳食纖維水閤性質的變化，結果錶明，與原料相比，改性蘋果膳食纖維的持水力、結閤水力和膨脹力都顯著提高．
이평과사중제취적조선식섬유위원료，이용단라간제압궤진행제압개성，이제고기중수용성선식섬유（SDF）함량．결과표명，경제압개성후，평과선식섬유중적SDF함량현저제고．최가제압공예조건위：가수량40％，라간전속780 r／min ，물료립도20목，차조건하득도SDF적함량위24．0％．시험연구료개성전후평과선식섬유수합성질적변화，결과표명，여원료상비，개성평과선식섬유적지수력、결합수력화팽창력도현저제고．
In this study ,the dietary fiber of apple which extracted from apple pomace was used to modify by screw extrusion ,aiming to improve the content of soluble dietary fiber (SDF) in it .The results indicated that the content of SDF in apple dietary fiber was significantly im-proved after extrusion .The optimum conditions of extrusion process were as follows :the wa-ter content of 40% ,screw rotation speed of 780 r/min ,and material particle size of 20 mesh . Under these conditions ,the content of SDF can reach to 24 .0% .The differences of hydration properties between non-modified and modified material were also studied .And it was found that WHC ,WBC and SC of modified apple dietary fiber were significantly improved com-pared to the materials .
