食品科学

• 工艺技术 •    下一篇

兔皮明胶提取工艺优化

于 玮1,王雪蒙1,马 良1,2,张宇昊1,2,*   

  1. 1.西南大学食品科学学院,重庆 400716;2.西南大学 国家食品科学与工程实验教学中心,重庆 400716
  • 出版日期:2016-05-25 发布日期:2016-05-18

Optimization of Gelatin Extraction from Rabbit Skin

YU Wei1, WANG Xuemeng1, MA Liang1,2, ZHANG Yuhao1,2,*   

  1. 1. College of Food Science, Southwest University, Chongqing 400716, China;
    2. National Food Science and Engineering Experimental Teaching Center, Southwest University, Chongqing 400716, China
  • Online:2016-05-25 Published:2016-05-18

摘要:

以兔皮为原料,研究稀盐酸短时诱导兔皮制备明胶的工艺。以明胶提取率和凝胶强度为评价指标,对兔皮明胶制备工艺中的盐酸质量分数、盐酸处理时间、提胶pH值、提胶温度4 个因素进行了优化,在此基础上通过正交试验确定最佳工艺为盐酸质量分数1%、盐酸处理时间10 min、提胶温度65 ℃、提胶pH 4。在此工艺条件下明胶提取率高达(86.85±1.71)%,凝胶强度为(481.43±16.89)g。明胶基本性质符合GB 6783—2013《食品添加剂:明胶》要求。

关键词: 兔皮, 明胶, 提取, 提取率, 凝胶强度

Abstract:

The extraction induced by short-term treatment with dilute hydrochloric acid of gelatin from rabbit skin was
investigated in the current work. Optimization of 4 process parameters including HCl concentration, HCl treatment
time, extraction pH and temperature for improved extraction yield and gel strength of gelatin was implemented using an
orthogonal array design. The optimum extraction conditions were determined as follows: 10 min treatment with 1% HCl and
subsequent extraction in water acidified to pH 4 at 65 ℃. Under these conditions, the yield and gel strength of gelatin were
(86.85 ± 1.71)% and (481.43 ± 16.89) g, respectively. The basic properties of rabbit skin gelatin met the requirements of the
Chinese national standard (GB 6783—2013).

Key words: rabbit skin, gelatin, extraction, yield, gel strength

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