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Non-aqueous titrimetric determination of food preservatives and non-nutritive sweeteners using internal indicators.

Veerabhadra Rao, M. and Krishnamacharyulu, A. G. and Kapur, O. P. and Prakasa Sastry, C. S. (1983) Non-aqueous titrimetric determination of food preservatives and non-nutritive sweeteners using internal indicators. Journal of Food Science and Technology, 20 (5). 202-205, 18 ref..

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Abstract

Oracet blue B, Sudan blue GN, Sudan green 4B (amino anthraquinone dyes) and resazurin have been used for the first time as internal indicators in the non-aqueous titrimetric detn. of food preservatives such as sodium benzoate, sodium propionate, sodium salicylate and non-nutritive sweeteners such as sodium saccharin and sodium cyclamate employing perchloric acid in glacial acetic acid as titrant. The suitability of using Azur A, Azur C, Toluidine blue O (thiazine dyes) and Bromo pyrogallol red in titrations employing sodium methoxide as titrant, for detn. of acid forms of the above preservatives and non-nutritive sweeteners, sorbic acid and p-hydroxybenzoic acid. The results are accurate with a max. % error of 0.1, 0.8 and 2.5 for macro, semi-micro and micro titrations resp. The recoveries of added preservatives and non-nutritive sweeteners to food products are reported. Photometric titrations are also described.

Item Type: Article
Uncontrolled Keywords: TITRATION-; food preservatives, titrimetric detn. internal indicators for; sweeteners, titrimetric detn. internal indicators for; PRESERVATIVES-; SWEETENERS-; titrimetric detn. internal indicators for sweeteners
Subjects: 600 Technology > 08 Food technology > 31 Food Additives
600 Technology > 08 Food technology > 13 Quality control
Divisions: Food Safety Analytical Quality Control Lab
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 10 Nov 2010 04:45
Last Modified: 28 Dec 2011 09:54
URI: http://ir.cftri.com/id/eprint/6636

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