研究报告

不同提取方法对杏仁蛋白结构与功能性质的影响

  • 周芷夷 ,
  • 周建中 ,
  • 张涛 ,
  • 张婷 ,
  • 王艺诺 ,
  • 于俊飞 ,
  • 锁晓红 ,
  • 刘宗洋 ,
  • 马杰
展开
  • (新疆农业大学 食品科学与药学学院,新疆 乌鲁木齐,830000)
第一作者:硕士研究生(周建中副教授为通信作者,E-mail:zjz7978@sina.com)

收稿日期: 2024-09-28

  修回日期: 2024-11-27

  网络出版日期: 2025-08-22

Effects of different extraction methods on structure and functional properties of almond protein

  • ZHOU Zhiyi ,
  • ZHOU Jianzhong ,
  • ZHANG Tao ,
  • ZHANG Ting ,
  • WANG Yinuo ,
  • YU Junfei ,
  • SUO Xiaohong ,
  • LIU Zongyang ,
  • MA Jie
Expand
  • (College of Food Science and Pharmacy, Xinjiang Agricultural University, Urumqi 830000, China)

Received date: 2024-09-28

  Revised date: 2024-11-27

  Online published: 2025-08-22

摘要

为探究提取方式对杏仁蛋白的结构与功能性质的影响,拓宽杏仁蛋白在食品加工领域的应用,以脱脂杏仁粉为原料,使用碱溶酸沉法、盐析法、酶提取法及醇沉法4种方法提取蛋白,并对杏仁蛋白的结构和功能性质进行比较。结果表明:盐析法提取的杏仁蛋白纯度最高(80.60%),醇沉法的提取率最高(67.55%),纯度最低(56.17%)。SDS-PAGE凝胶电泳及傅里叶红外光谱结果显示,除酶提蛋白外其他杏仁蛋白亚基与二级结构未发生明显改变。酶提取法与盐析法制备的杏仁蛋白加工特性更优,其中酶提蛋白的溶解度(66.91%)和溶液稳定性最高,盐析蛋白具有良好的热稳定性与乳化性(32.06 m2/g)。而醇沉蛋白与碱溶蛋白溶液表观黏度相对较大。研究结果表明,不同方法提取的杏仁蛋白在结构与功能性质上存在显著差异。该研究可为杏仁蛋白的加工原料筛选提供科学依据。

本文引用格式

周芷夷 , 周建中 , 张涛 , 张婷 , 王艺诺 , 于俊飞 , 锁晓红 , 刘宗洋 , 马杰 . 不同提取方法对杏仁蛋白结构与功能性质的影响[J]. 食品与发酵工业, 2025 , 51(15) : 200 -207 . DOI: 10.13995/j.cnki.11-1802/ts.041172

Abstract

To investigate the impact of extraction methods on the structure and functional properties of almond protein and to expand its applications in the field of food processing, defatted almond powder was used as raw material.Almond protein was extracted using four methods, including alkali extraction and acid precipitation, salting out, enzymatic extraction, and alcohol precipitation.The structure and functional properties of the extracted almond protein were then compared.Results indicated that the salting-out method yielded the highest purity of almond protein (80.60%), while the alcohol precipitation method achieved the highest extraction yield (67.55%) but the lowest purity (56.17%).SDS-PAGE gel electrophoresis and Fourier transform infrared spectroscopy results revealed that, except for enzymatically extracted protein, the subunits and secondary structure of other almond proteins showed no significant changes.The almond proteins extracted via the enzymatic and salting-out methods exhibited better processing characteristics.Specifically, enzymatically extracted protein had the highest solubility (66.91%) and solution stability, while protein extracted through the salting-out method demonstrated good thermal stability and emulsification (32.06 m2/g).In contrast, the apparent viscosity of the protein solutions extracted by alcohol precipitation and alkali extraction was relatively higher.The study indicates that there are significant differences in the structure and functional properties of almond protein depending on the extraction method used.This research provides a scientific basis for the selection of almond protein as a raw material in food processing.

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