食品科学 ›› 2012, Vol. 33 ›› Issue (24): 61-65.doi: 10.7506/spkx1002-6630-201224013

• 工艺技术 • 上一篇    下一篇

苹果渣不溶性膳食纤维脱色工艺优化

丁晨阳1,韩舜愈1,*,盛文军1,祝霞1,冒秋丹1,张军2   

  1. 1.甘肃农业大学食品科学与工程学院,甘肃兰州 730070;2.天水长城果汁饮料有限公司,甘肃天水 741020
  • 收稿日期:2011-09-13 修回日期:2012-11-21 出版日期:2012-12-25 发布日期:2012-12-12
  • 通讯作者: 丁晨阳 E-mail:dcy-1030@163.com
  • 基金资助:

    科技人员服务企业行动

Optimization of Decolorization of Insoluble Dietary Fiber from Apple Pomace

DING Chen-yang1,HAN Shun-yu1,*,SHENG Wen-jun1,ZHU Xia1,MAO Qiu-dan1,ZHANG-Jun2   

  1. 1. College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China;2. Tianshui Great Wall Fruit Juice Group Co. Ltd., Tianshui 741020, China
  • Received:2011-09-13 Revised:2012-11-21 Online:2012-12-25 Published:2012-12-12

摘要:

为改善苹果渣不溶性膳食纤维的色泽和品质,以过氧化氢为脱色剂,采用响应面分析,对苹果渣不溶性膳食纤维的脱色进行初步研究,同时测定其性能特性。结果表明:pH12、H2O2体积分数5%、液料比4:1(mL/g)、处理温度80℃、脱色时间180min时,苹果渣不溶性膳食纤维脱色效果最佳,采用CIE-L*a*b*色空间表示方法,其L*值62.65,a*值-1.47,b*值12.48,亨特白度60.59。脱色后,水不溶性膳食纤维持水力和溶胀性均有所提高,分别为1802.96%和13.73mL/g。

关键词: 苹果渣, 不溶性膳食纤维, 脱色, 持水力, 溶胀性

Abstract:

Hydrogen peroxide was used to decolorize insoluble dietary fiber (IDF) from apple pomace to improve its color and quality. Response surface methodology was applied to optimize decolorization conditions. Moreover, decolorized IDF was measured for functional properties. The best decolorization results were observed when IDF was treated with 5% hydrogen peroxide at 80 ℃ and pH 12 for 180 min with a liquid-to-solid ratio of 4:1 (mL/g). After decolorization under the optimized conditions, the CIE L*, a* and b* and whiteness were 62.65, -1.47, 12.48 and 60.59, respectively, and the water-holding capacity and swelling capacity increased to 1802.96% and 13.73 mL/g, respectively.

Key words: apple pomace, insoluble dietary fiber, decolorization, water-holding capacity, swelling capacity

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