食品科学 ›› 2005, Vol. 26 ›› Issue (8): 61-65.

• 基础研究 • 上一篇    下一篇

四种多聚磷酸钠在鸡胸肉中水解的~(31)P核磁共振研究

 彭增起, 周光宏, 徐幸莲, 吴菊清   

  1. 南京农业大学食品科技学院
  • 出版日期:2005-08-15 发布日期:2011-09-19

~(31)PNMR Studies of the Hydrolysis of Added Polyphosphates in Chicken Thigh Meat

 PENG  Zeng-Qi, ZHOU  Guang-Hong, XU  Xing-Lian, WU  Ju-Qing   

  1. College of Food Science and Technology, Nanjing Agricultural University
  • Online:2005-08-15 Published:2011-09-19

摘要: 本文利用31P核磁共振技术(NMR)研究了添加到鸡胸肉(CB)中的焦磷酸四钠(TSPP)、焦磷酸二氢二钠(DSPP)、三聚磷酸钠(STPP)和六偏磷酸纳(HMP)所发生的水解。研究结果表明,TSPP、DSPP、STPP和HMP在鸡胸肉中均发生水解。TSPP在10h内完全水解为正磷酸盐。DSPP水解较慢,10h后仍占核磁共振总可测磷的40%。STPP在10h时已经完全水解为焦磷酸盐和正磷酸盐,10h之后由三聚磷酸钠产生的焦磷酸盐继续水解。在HMP腌制液处理的鸡胸肉匀浆物中,没有焦磷酸盐存在,两端的磷原子到10h时的相对含量为零,内部磷原子的相对含量在10h内基本保持不变。

关键词: 多聚磷酸盐, 水解, 31P核磁共振, 鸡肉

Abstract: The hydrolysis of sodium tripolyphophate(STPP), tetrasodium pyrophophate(TSPP), disodium pyrophophate (DSPP) and sodium hexametaphosphate(HMP) was studied in chicken thigh meat(CT) by 31P NMR. The results showed that TSPP, DSPP, STPP and HMP were all hydrolyzed in the chicken thigh meat. TSPP was hydrolyzed to orthophosphate in 10h. DSPP were hydrolyzed more slowly than TSPP, its relative content was accounted for 40% of NMR total visible phosphorus. STPP was hydrolyzed to orthophosphates and pyrophosphate at 10h, meanwhile the pyrophosphates derived from STPP was continuously hydrolyzed to orthophosphate. No pyrophosphates was found in the breast meat treated by HMP marinade. Terminal phosphorus was zero at 10h, the relative content of interior phosphorus was unchanged basically for 10h.

Key words: polyphosphates, hydrolysis, 31P NMR, chicken