Determination of tripolyphosphate in frozen cod and scallop adductor by ion chromatography

被引：32

作者：

Cui, H ^{[1
]}

Cai, F

Xu, Q

机构：

[1] Shandong Entry Exit Inspect & Quarantine Bureau, Lab Food Inspect, Qingdao 266002, Peoples R China

[2] Shandong Entry Exit Inspect & Quarantine Bureau, Chem & Mineral Lab, Qingdao 266002, Peoples R China

来源：

JOURNAL OF CHROMATOGRAPHY A | 2000年 / 884卷 / 1-2期

关键词：

fish; food analysis; tripolyphosphate;

D O I：

10.1016/S0021-9673(00)00055-8

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

We introduce a method for the determination of tripolyphosphate in frozen cod and scallop adductor by using ion chromatography. The tripolyphosphate was extracted from minced cod and scallop adductor with deionized water by ultrasonic leaching, and then the proteins soluble in water were precipitated with trichloroacetic acid and removed by filtering. An ion chromatograph with an ionpac AS11-HC anion-exchange column, an ASRS (Anion Self Regenerating Suppression), a conductivity detector and a gradient pump (sodium hydroxide gradient) was used. The detection limit was below 5 mg tripolyphosphate/kg cod or scallop adductor. This method is applicable to the determination of polyphosphates in aquatic products and the procedures are easy to implement. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：89 / 92

页数：4

共 5 条

[1] Comparison of polyphosphate analysis by ion chromatography and by modified end-group titration [J].