Simple spectrophotometric method for determination of iodine value of vegetable oils

A spectrophotometric method has been developed for the determination of iodine value of vegetable oils. The method is based on the reaction of Hanus solution with oils and subsequently treated with potassium iodide solution producing triiodide ions. The absorbance at 350 nm of triiodide ions was use...

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Main Authors: Thidarat Kruatian, Kritsana Jitmanee
Format: Journal
Published: 2018
Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84880965640&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/47742
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-477422018-04-25T08:43:27Z Simple spectrophotometric method for determination of iodine value of vegetable oils Thidarat Kruatian Kritsana Jitmanee A spectrophotometric method has been developed for the determination of iodine value of vegetable oils. The method is based on the reaction of Hanus solution with oils and subsequently treated with potassium iodide solution producing triiodide ions. The absorbance at 350 nm of triiodide ions was used for analytical purposes. The calibration graph was constructed by plotting the absorbance at 350 nm versus the molar concentration of Hanus solution. Under the optimal conditions a linear calibration graph ranged from 0.02 to 0.10 mol/L of Hanus solution with r 2 of 0.999. The proposed method was feasible to determine a wide range of iodine value of vegetable oil samples. The method was applied to commercially available vegetable oils and the results obtained by the proposed method agreed well with those obtained by the reference method. The standard deviation of iodine value ranged from 0.7 to 2.1 (n=3). The analytical procedures were simple, required short analysis time, and used small amount of solvent and reagent. 2018-04-25T08:43:27Z 2018-04-25T08:43:27Z 2013-08-06 Journal 01252526 2-s2.0-84880965640 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84880965640&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/47742
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
description A spectrophotometric method has been developed for the determination of iodine value of vegetable oils. The method is based on the reaction of Hanus solution with oils and subsequently treated with potassium iodide solution producing triiodide ions. The absorbance at 350 nm of triiodide ions was used for analytical purposes. The calibration graph was constructed by plotting the absorbance at 350 nm versus the molar concentration of Hanus solution. Under the optimal conditions a linear calibration graph ranged from 0.02 to 0.10 mol/L of Hanus solution with r 2 of 0.999. The proposed method was feasible to determine a wide range of iodine value of vegetable oil samples. The method was applied to commercially available vegetable oils and the results obtained by the proposed method agreed well with those obtained by the reference method. The standard deviation of iodine value ranged from 0.7 to 2.1 (n=3). The analytical procedures were simple, required short analysis time, and used small amount of solvent and reagent.
format Journal
author Thidarat Kruatian
Kritsana Jitmanee
spellingShingle Thidarat Kruatian
Kritsana Jitmanee
Simple spectrophotometric method for determination of iodine value of vegetable oils
author_facet Thidarat Kruatian
Kritsana Jitmanee
author_sort Thidarat Kruatian
title Simple spectrophotometric method for determination of iodine value of vegetable oils
title_short Simple spectrophotometric method for determination of iodine value of vegetable oils
title_full Simple spectrophotometric method for determination of iodine value of vegetable oils
title_fullStr Simple spectrophotometric method for determination of iodine value of vegetable oils
title_full_unstemmed Simple spectrophotometric method for determination of iodine value of vegetable oils
title_sort simple spectrophotometric method for determination of iodine value of vegetable oils
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84880965640&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/47742
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