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Spectrophotometric determination of quinine in soft drinks.

Veerabhadra Rao, M. and Krishnamacharyulu, A. G. and Sattigeri, V. D. and Manjunath, M. N. and Nagaraja, K. V. and Kapur, O. P. (1984) Spectrophotometric determination of quinine in soft drinks. Journal of Food Science and Technology, 21 (5). 266-268, 18 ref..

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Abstract

The method developed for detn. of quinine in soft drinks is based on extraction of the 1:2 complex formed between quinine and alizarin brilliant violet R into chloroform at pH 1.0. The bluish-violet complex in chloroform showed max. absorbance at 578 nm. Beer's law is obeyed over a concn. range of 1.0-16 mug/ml, with a recovery of quinine in soft drinks of 98.6-100.2%, s.d. of plus/minus0.35. The method is sensitive and can be applied in the presence of other food additives.

Item Type: Article
Uncontrolled Keywords: BEVERAGES-; soft drinks, quinine detn. in; SPECTROSCOPY-; ALKALOIDS-
Subjects: 500 Natural Sciences and Mathematics > 04 Chemistry and Allied Sciences > 10 Spectroscopic and Spectrometric analysis
600 Technology > 07 Beverage Technology > 07 Soft drinks
Divisions: Food Safety Analytical Quality Control Lab
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 22 Jun 2016 07:32
Last Modified: 22 Jun 2016 07:32
URI: http://ir.cftri.com/id/eprint/6651

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