食品科学 ›› 2009, Vol. 30 ›› Issue (24): 337-339.doi: 10.7506/spkx1002-6630-200924074

• 分析检测 • 上一篇    下一篇

两种紫外分光收光度法同时测定果味饮料中苯甲酸钠和山梨酸钾含量的比较研究

汪显阳,冯 伟,胡岩岩,刘贤香   

  1. 安徽医科大学化学教研室
  • 收稿日期:2008-12-17 修回日期:2009-03-26 出版日期:2009-12-15 发布日期:2010-12-29
  • 通讯作者: 汪显阳 E-mail:xianyangw@tom.com
  • 基金资助:

    安徽医科大学教学研究基金资助项目(2008-ZQKY-62)

A Comparative Study on Two Ultraviolet Spectrophotometry Methods for Simultaneous Determination of Sodium Benzoate and Potassium Sorbate in Fruit-flavored Beverages

WANG Xian-yang,FENG Wei,HU Yan-yan,LIU Xian-xiang   

  1. Department of Chemistry, Anhui Medical University, Hefei 230032, China
  • Received:2008-12-17 Revised:2009-03-26 Online:2009-12-15 Published:2010-12-29
  • Contact: WANG Xian-yang, E-mail:xianyangw@tom.com

摘要:

目的:选择果味饮料中苯甲酸钠和山梨酸钾含量的测定方法。方法:分别采用等吸收点法、多元线性回归法测定饮料中苯甲酸钠和山梨酸钾的含量,并对测量结果进行比较。结果:多元线性回归测得苯甲酸钠回收率99.75%~100.9%,山梨酸钾回收率99.16%~101.1%,等吸收点法测得苯甲酸钠回收率98.58%~99.38%,山梨酸钾回收率98.42%~99.56%。结论:多元线性回归方法更适用于果味碳酸饮料中苯甲酸钠和山梨酸钾的同时测定。

关键词: 多元线性回归, 等吸收点, 紫外吸收光度法, 苯甲酸钠, 山梨酸钾, 果味饮料

Abstract:

Objective: To choose an appropriate method to measure sodium benzoate(SB)and potassium sorbate(PS) in the fruitflavored beverages. Method: The content of SB and PS in the fruit-flavored beverages were determined by multiwavelength linear regression and iso-absorptive point double-wavelength UV spectrophotometry, and the performance of the two methods were compared. Results: Recovery of PS and SB by multiwavelength linear regression spectrophotometry was 99.75%-100.9% and 99.16%-101.1% respetively, and recovery of PS and SB by iso-absorptive point double-wavelength was 98.58%-99.38% and 98.42%-99.56% respetively. Conclusion: Multiwavelength linear regression is more suitable method to measure SB and PS in the fruit-flavored beverages.

Key words: multiwavelength linear regression, iso-absorptive point, ultraviolet spectrophotometry, sodium benzoate, potassium sorbate, fruit-flavored beverages

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