Influence of lanolin and white soft paraffin on the determination of vitamin A in fats
Abstract
Pharmaceutical interaction of the most frequently used substances with fats: lanolin, white soft paraffin and vitamin A palmitate was studied. The mixtures were examined by TLC with different ratios of lanolin and vitamin A palmitate, and white soft paraffin and vitamin A palmitate. Vitamin A in the mixtures was determined by the UV spectrophotometric method according to BP 93. It was established that the rise of lanolin concentration resulted in an increased apparent content of Vitamin A in fats as a consequence of lanolin absorption at the wave length of maximum absorption of vitamin A. By an increase of white soft paraffin concentration, an apparent decreased in the content of vitamin A in fats was obtained. Therefore, the suggested UV spectrophotometric method for vitamin A determination has a limited application on fats with high content of lanolin and white soft paraffin.
Keywords:
UV spectrophotometry / vitamin A palmitate / anhydrous lanolin / white soft paraffin / pharmaceutical interactionSource:
Spectroscopy Letters, 2000, 33, 2, 227-234
DOI: 10.1080/00387010009350072
ISSN: 0038-7010
WoS: 000086305900009
Scopus: 2-s2.0-0034583592
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VinčaTY - JOUR AU - Jovanović, Moma S. AU - Gutalj, M AU - Ivanović, D PY - 2000 UR - https://vinar.vin.bg.ac.rs/handle/123456789/2336 AB - Pharmaceutical interaction of the most frequently used substances with fats: lanolin, white soft paraffin and vitamin A palmitate was studied. The mixtures were examined by TLC with different ratios of lanolin and vitamin A palmitate, and white soft paraffin and vitamin A palmitate. Vitamin A in the mixtures was determined by the UV spectrophotometric method according to BP 93. It was established that the rise of lanolin concentration resulted in an increased apparent content of Vitamin A in fats as a consequence of lanolin absorption at the wave length of maximum absorption of vitamin A. By an increase of white soft paraffin concentration, an apparent decreased in the content of vitamin A in fats was obtained. Therefore, the suggested UV spectrophotometric method for vitamin A determination has a limited application on fats with high content of lanolin and white soft paraffin. T2 - Spectroscopy Letters T1 - Influence of lanolin and white soft paraffin on the determination of vitamin A in fats VL - 33 IS - 2 SP - 227 EP - 234 DO - 10.1080/00387010009350072 ER -
@article{ author = "Jovanović, Moma S. and Gutalj, M and Ivanović, D", year = "2000", abstract = "Pharmaceutical interaction of the most frequently used substances with fats: lanolin, white soft paraffin and vitamin A palmitate was studied. The mixtures were examined by TLC with different ratios of lanolin and vitamin A palmitate, and white soft paraffin and vitamin A palmitate. Vitamin A in the mixtures was determined by the UV spectrophotometric method according to BP 93. It was established that the rise of lanolin concentration resulted in an increased apparent content of Vitamin A in fats as a consequence of lanolin absorption at the wave length of maximum absorption of vitamin A. By an increase of white soft paraffin concentration, an apparent decreased in the content of vitamin A in fats was obtained. Therefore, the suggested UV spectrophotometric method for vitamin A determination has a limited application on fats with high content of lanolin and white soft paraffin.", journal = "Spectroscopy Letters", title = "Influence of lanolin and white soft paraffin on the determination of vitamin A in fats", volume = "33", number = "2", pages = "227-234", doi = "10.1080/00387010009350072" }
Jovanović, M. S., Gutalj, M.,& Ivanović, D.. (2000). Influence of lanolin and white soft paraffin on the determination of vitamin A in fats. in Spectroscopy Letters, 33(2), 227-234. https://doi.org/10.1080/00387010009350072
Jovanović MS, Gutalj M, Ivanović D. Influence of lanolin and white soft paraffin on the determination of vitamin A in fats. in Spectroscopy Letters. 2000;33(2):227-234. doi:10.1080/00387010009350072 .
Jovanović, Moma S., Gutalj, M, Ivanović, D, "Influence of lanolin and white soft paraffin on the determination of vitamin A in fats" in Spectroscopy Letters, 33, no. 2 (2000):227-234, https://doi.org/10.1080/00387010009350072 . .