食品科学 ›› 2018, Vol. 39 ›› Issue (1): 91-98.doi: 10.7506/spkx1002-6630-201801014

• 基础研究 • 上一篇    下一篇

低钠干腌肉加工过程中肌内结缔组织特性

刘成花,李 顺,张雅玮,刘世欣,黄孝闯,陈冬冬,彭增起*   

  1. 南京农业大学食品科技学院,食品安全与营养协同创新中心,江苏 南京 210095
  • 出版日期:2018-01-15 发布日期:2018-01-05
  • 基金资助:
    江苏省优势学科人才引进专项基金项目(080/80900234)

Characteristics of Intramuscular Connective Tissue in Low Sodium Dry-Cured Meat during Processing

LIU Chenghua, LI Shun, ZHANG Yawei, LIU Shixin, HUANG Xiaochuang, CHEN Dongdong, PENG Zengqi*   

  1. Synergetic Innovation Center of Food Safety and Nutrition, College of Food Science and Technology,Nanjing Agricultural University, Nanjing 210095, China
  • Online:2018-01-15 Published:2018-01-05

摘要: 以猪背最长肌为实验材料,食盐组为对照组,研究低钠盐对干腌肉加工过程中肌内结缔组织特性的影 响。结果显示:陈香结束后,低钠组次级肌束膜厚度比食盐组低0.72 μm(P<0.05),胶原蛋白热溶解性比食盐 组高0.91%(P<0.05),而低钠组胶原蛋白总含量、初级肌束膜厚度、成熟交联含量与食盐组相比差异不显著 (P>0.05)。与食盐相比,低钠盐使α-螺旋、β-转角的相对含量分别减少了11.69%、13.41%(P<0.05),聚集 片、无规卷曲的相对含量分别增加了46.88%、5.82%(P<0.05)。干腌猪肉加工中,低钠盐较食盐能进一步促进肌 内结缔组织蛋白降解。

关键词: 低钠盐, 肌内结缔组织, 胶原蛋白, 成熟交联

Abstract: The effect of low sodium salt on intramuscular connective tissue (IMCT) during the processing of dry-cured pork from M. longissimus dorsi was investigated. At the end of post-ripening, the thickness of secondary perimysium of low sodium-cured samples was 0.72 μm lower (P < 0.05), and the thermal solubility of collagen was 0.91% higher than that of normal salt-cured samples (P < 0.05). On the other hand, no significant differences existed in total collagen, the thickness of primary perimysium or pyridinoline cross-linking between the two groups (P > 0.05). Compared with the normal salt group, the relative contents of α-helix and β-turn in the low sodium group were decreased by 11.69% and 13.41%, respectively (P < 0.05); in contrast, aggregated strands and random coil were increased by 46.88% and 5.82%, respectively (P < 0.05). In conclusion, low sodium salt can further promote the degradation of IMCT than normal salt during the processing of drycured pork.

Key words: low sodium salt, intramuscular connective tissue, collagen, pyridinoline cross-linking

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