Kinetic Determination of Iodide by the Sandell–Kolthoff Reaction Using Diphenylamine-4-Sulfonic Acid

Trokhimenko, O. M.; Zaitsev, Vladimir

doi:10.1023/b:janc.0000026244.43536.13

Cited by 9 publications

(5 citation statements)

References 3 publications

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“…Total 60 eggs (12 eggs from each treatment) were collected randomly at the end of 5 th and 10 th week of the experiment for iodine estimation. The iodine concentration in the egg yolk and albumin was determined by a spectrophotometer method (440 nm) using alkaline ashing based on the Sandell-Kolthoff reaction [ 7 ]. The principle of the assessment was the reduction of Ce 4+ to Ce 3+ in the presence of As 3+ and the catalytic effect of iodine.…”

Section: Methodsmentioning

confidence: 99%

Effect of dietary iodine on production of iodine enriched eggs

Sumaiya¹,

Nayak²,

Baghel³

et al. 2016

Vet World

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Aim:Objective of this study was to investigate the effect of different levels of iodine supplementation on iodine content of eggs in laying hens.Materials and Methods:In the experiment, 135 laying hens (White Leghorn) of 55 weeks age were randomly distributed to 5 dietary treatments; each group contained 27 laying hens distributed in three replicates of 9 birds each. Diet T1 was control basal layer diet without iodine enrichment in which iodine content (I2) was as per NRC recommendation. Basal diets were supplemented with calcium iodate (Ca (IO3)2) at 5, 10, 15 and 20 mg/kg in T2, T3, T4 and T5 groups, respectively. The iodine content in the calcium iodate is 65.21%, therefore, the diets T2, T3, T4 and T5 contained 3.25, 6.50, 9.75 and 13.0 ppm iodine, respectively. The laying hens were fed the respective experimental diets ad libitum during the experimental period of 10-week. The iodine content of egg yolk and albumen was analyzed at the end of 5th and 10th week of the experiment. Economics of feeding for the production of iodine enriched egg was calculated at the end of the experiment.Results:Increasing iodine levels in diet of hens from 0.45 to 13.0 ppm significantly increased egg iodine concentration, the highest concentration of egg iodine was observed in the group fed diet supplemented with 13.0 ppm iodine followed by those fed 9.75, 6.50, 3.25 and 0.45 ppm iodine in diet. There was no significant difference in the iodine levels of unboiled versus boiled eggs. Therefore, the consumers are ensured to receive the optimal levels of iodine from boiled iodine-enriched eggs. Among different diets, minimum and significantly lower feeding cost (Rs. per dozen or per kg eggs) was noticed in hens allotted T3 diet (6.50 ppm I2). However, feeding cost of hens receiving 3.25 and 9.25 ppm I2 was statistically (p<0.05) similar to control group (T1). Further, it was noticed that feeding cost (Rs. per dozen or per kg eggs) was significantly increased due to the inclusion of higher level of iodine (13.0 ppm).Conclusion:It was concluded that supplementing iodine at 6.50 ppm in layers diet was economically better for the production of iodine enriched eggs followed by feed iodine supplementation at 3.25 ppm as compared to control and other treatment groups.

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Section: Methodsmentioning

confidence: 99%

Effect of dietary iodine on production of iodine enriched eggs

Sumaiya¹,

Nayak²,

Baghel³

et al. 2016

Vet World

View full text Add to dashboard Cite

show abstract

“…The automated modes yielded higher results, due to interfering thiocyanates which participated in the catalytic reaction (May et al, 1990). Other modifications of the Sandell-Kolthoff reaction include the use of a brucine solution (Matthes et al, 1973;Aumont and Tressol, 1986) or diphenylamine-4-sulfonic acid (Trokhimenko and Zaitsev, 2004) to stop the As-Ce-I reaction after a selected time. Another comparison of an autoanalyzer method (AAII), where the mineralization takes place in a continuous flow manner with a manual mineralization and discoloration in a 96-well microtiter plate read by a PC-controlled photometer, was performed by Wuethrich et al (2000).…”

Section: Catalytic Spectrophotometric Methodsmentioning

confidence: 99%