Influence of partial replacement of Na Cl with KCl on proteolysis during processing of dry-cured hams
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摘要: 为了降低干腌火腿钠含量,应用40%KCl替代Na Cl对火腿原料进行腌制,采用强化高温成熟现代工艺制备干腌火腿,分析加工过程中火腿股二头肌盐分含量、水分含量、p H、蛋白水解指数、肽氮和氨态氮含量,研究KCl替代对火腿加工过程中组织蛋白酶B和L潜在酶活力变化的影响。结果表明:40%KCl替代Na Cl对火腿中组织蛋白酶B和L潜在酶活力变化无显著影响(p>0.05),风干成熟产品理化指标、蛋白水解指数、肽氮和氨态氮含量等无显著差异(p>0.05),说明采用40%KCl替代Na Cl对干腌火腿的蛋白质降解过程无显著影响(p>0.05)。Abstract: In order to reduce the sodium-content of dry-cured hams,all hams were produced with modified high temperature mature processing technology and Na Cl was replaced by 40% KCl when they were salted. A comparative study was carried out to study the effect of the two salts on salt content,moisture content,p H value,proteolysis index,peptide nitrogen(Pe N) and ammonia nitrogen(AN) content,cathepsin(B and L)potential activities of biceps femoris during processing. The results showed that there was no significant difference( p > 0. 05) with cathepsin( B and L) potential activities of biceps femoris when 40 % Na Cl was replaced by KCl. So did physical and chemical indicators,proteolysis index,Pe N and AN content of the two final products at the end of the processing(p>0.05). Results also showed that it had no significant impact(p>0.05) on proteolysis of dry-cured ham when 40% Na Cl was replaced by KCl.
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Keywords:
- ham /
- KCl replacement /
- proteolysis /
- cathepsin
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