A study on vitamin D and vitamin A in milk and edible oils available in the United Arab Emirates.
Two high-performance liquid chromatography methods have been validated for the determination of vitamin D and vitamin A in milk and edible oils. The percentage recovery of vitamin D added to milk ranged from 89% to 105%, with the repeatability relative standard deviation ranging from 2.78% to 6.11%. Its recovery in oil samples ranged from 90% to 102%, with the repeatability relative standard deviation ranging from 3.97% to 7.54%. The average recovery of vitamin A added to milk was found to be 98.7%. Analytical data for vitamin D in different brands of milk and milk products in the market samples of the United Arab Emirates indicate that 87% of samples contain vitamin D with 39% of samples within the acceptable range (0.8-1.2 microg/100 ml), where as 31% were found to be under-fortified and 30% were over-fortified. Analytical data for vitamin D in edible oils confirm a large variation. All milk samples analyzed contain less than 55 microg/100 ml vitamin A.
Laleye
Louis C
LC
Department of Food Sciences, College of Food & Agriculture, U.A.E. University, Al Ain, United Arab Emirates. llaleye@uaeu.ac.ae
Wasesa
Abdulkadar A H
AA
Rao
Madduri V
MV
D000818:Animals; D002762:Cholecalciferol / Q000032:analysis / Q000302:isolation & purification; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D043302:Cultured Milk Products / Q000737:chemistry; D004041:Dietary Fats; D004872:Ergocalciferols / Q000032:analysis / Q000302:isolation & purification; D005504:Food Analysis / Q000379:methods; D005523:Food Supply; D005527:Food, Fortified / Q000032:analysis* / Q000592:standards; D006865:Hydrogenation; D057230:Limit of Detection; D008892:Milk / Q000737:chemistry*; D018673:Nutrition Policy; D000073878:Palm Oil; D010938:Plant Oils / Q000032:analysis* / Q000737:chemistry; D015203:Reproducibility of Results; D000074242:Sunflower Oil; D014479:United Arab Emirates; D014801:Vitamin A / Q000032:analysis* / Q000302:isolation & purification; D014807:Vitamin D / Q000032:analysis* / Q000302:isolation & purification
D004041:Dietary Fats; D004872:Ergocalciferols; D010938:Plant Oils; D000074242:Sunflower Oil; D014801:Vitamin A; D014807:Vitamin D; D002762:Cholecalciferol; D000073878:Palm Oil