Evaluation of the turbidity and thin layer chromatographic tests for detection of castor oil.

Nasirullah, Dr. and Krishnamurthy, M. N. and Pashupathy, K. S. and Nagaraja, K. V. and Kapur, O. P. (1982) Evaluation of the turbidity and thin layer chromatographic tests for detection of castor oil. Journal of the American Oil Chemists' Society, 59 (8). 337-339, 8 ref..

PDF Journal of the American Oil Chemists' Society, Volume-59(8 (1982) 337-339.pdf - Published Version Restricted to Registered users only Download (1MB)

Abstract

Detection procedures for castor oil in genuine and treated groundnut oils were screened and false turbidity was noticed when ammonium molybdate/H2SO4 reagents were added to rancid groundnut oil, successively bleached and neutralized rancid groundnut oil samples a not respond to the tests. Turbidity did not appear for groundnut oils containing 10 and 20% castor oil and even for pure castor oil samples. TLC was found to be quite effective for most of the treated, adulterated, genuine, old and fresh oil and fat samples, but showed a streaking, when applied to rancid groundnut oil. However, streaking could be greatly reduced and TLC could be successfully performed with bleached and neutralized, rancid groundnut oil samples.

Item Type:	Article
Uncontrolled Keywords:	OILS-VEGETABLE; groundnut oils, castor oils adulteration detection in; ADULTERATION-; GROUNDNUT-OILS; castor oils adulteration detection in groundnut oils
Subjects:	500 Natural Sciences and Mathematics > 04 Chemistry and Allied Sciences > 06 Chromatography 600 Technology > 08 Food technology > 19 Lipids-oils/fats > 01 Oilseeds
Divisions:	Food Safety Analytical Quality Control Lab
Depositing User:	Food Sci. & Technol. Information Services
Date Deposited:	25 Nov 2016 10:44
Last Modified:	25 Nov 2016 10:44
URI:	http://ir.cftri.res.in/id/eprint/6775

Actions (login required)

View Item