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Retinol palmitate

However, complete hydrolysis of carotenoid esters sometimes is not achieved in 1 to 3 hr. The saponification degree can be verified easily by the presence of carotenol ester peaks eluting later than the peaks of P-carotene on reversed phase columns. Retinol palmitate, added as an internal standard to orange juice, also serves to indicate whether saponification is complete, since it is converted to retinol which elutes at lower retention time. The mixture is subsequently washed with water until free of alkali in a separatory funnel. Other more polar solvents such as CH2CI2 or EtOAc, and diethyl ether alone or mixtured with petroleum ether can be used to increase the recovery of polar xanthophylls from the water phase. [Pg.452]

Determination of retinol palmitate in fortified cereal products... [Pg.610]

Masuda et al. have reported the supercritical fluid chromatography of retinol palmitate and tocopherol acetate using an octadecylsilyl silica gel column with ethanol-modified carbon dioide as the mobile phase [43]. Both retinol and tocophenol eluted within 5 min. The method was applied to the determination of these compounds in an ointment formulation. The method was found to be linear for both retinol and tocophenol from 0.5 to... [Pg.139]

Some antioxidants are used more specifically in sunscreen products and also in moisturizing products to prevent aging but are rare causes of allergic contact dermatitis in such preparations, for example, tocopherol (vitamin E) acetate, retinol palmitate,67 and ascorbic acid (vitamin C).68... [Pg.518]

Manzano, D., Aguirre, A., Gardeazabal, J., Eizaguirre, X., and Diaz Perez, J.L., Allergic contact dermatitis from tocopheryl acetate (vitamin E) and retinol palmitate (vitamin A) in a moisturizing cream, Contact Dermatitis, 31, 324, 1994. [Pg.521]

Kobayashi TK, Tsubota K, Takamura E, et al. Effect of retinol palmitate as a treatment for dry eye a cytological evaluation. Ophthalmologica 1997 211 358-361. [Pg.277]

An 86-year-old woman developed anorexia, thirst, and noctnria. Dnring the previons 7 months her weight had fallen by 11 kg. She was taking domperidone and 1-6 vitamin tablets daily, each of which contained retinol palmitate 600 lU and colecalciferol 200 lU. She had hjrpercalcemia (sernm calcinm 3.34 mmol/1) and renal insnfficiency (sernm creatinine 333 pmol/l). Other canses of hjrpercalcemia were exclnded. [Pg.3644]

The recommended provision of vitamin A to adults during intravenous nutrition (IVN), whether this is partial or total parenteral nutrition (TEN), is 1000 fig retinol. This is usually provided as retinol palmitate and is supplied either with other fat-soluble vitamins in a mixture dissolved in a fat emulsion for intravenous feeding or is designed to be compatible with a mixture of all vitamins suitable for addition to other water-soluble nutrients. [Pg.1082]

Billionrey, F., Guillaumont, M., Frederich, A., and Aulagner, G. (1993) Stability of fat-soluble vitamin A (retinol palmitate), vitamin E (tocopherol acetate), and vitamin K1 (phyl-loquinone) in total parenteral nutrition at home, JPEN J. Parenter. Enteral. Nutr., 17, 56-60. [Pg.327]

Synonyms Retinol, hexadecanoate Retinol palmitate Vitamin A palmitate... [Pg.3828]

The fat-soluble vitamins, namely, vitamin A (retinol, retinol acetate, retinol palmitate), vitamin D2 (ergocalciferol). [Pg.2423]

Retinol palmitate (82.5 mg Arovit /kg) was given to 5 female rats (breeder Winkelmann, Borchen-Kirchborchen) weighing 252 4g five times a week from April 17 to June 20, 1967, that were 45 applications at all. [Pg.64]

Fig. 77. Brush cell from the bronchiolar epithelium of a female rat (breeder Winkelmann, Borchen-Kirchborchen) which received daily intragastric applications of 82 mg retinol palmitate per kg body weight x day, 5 days per we from April 17 to June 20, 1967 for a total of 42 days. Fixed on June 20, 1967 under methitural anaesthesia hy intratracheal instillation of 2.5 % glutaraldehyde in phosphate buffer (pH 7.4) before opening the thorax. After washing in phosphate buffer the tissue was postfixed with 1 % osmiiun tetroxide in phosphate huffer for 2 h. Contrasted en bloc for 12 h with 0.5 % uranyl acetate in 70 % ethanol. Embedded in a 2 8 mixture of methyl and butyl methacrylate. Sectioned at 50 nm. Lead citrate after Reynolds (1963). Plate 3601... Fig. 77. Brush cell from the bronchiolar epithelium of a female rat (breeder Winkelmann, Borchen-Kirchborchen) which received daily intragastric applications of 82 mg retinol palmitate per kg body weight x day, 5 days per we from April 17 to June 20, 1967 for a total of 42 days. Fixed on June 20, 1967 under methitural anaesthesia hy intratracheal instillation of 2.5 % glutaraldehyde in phosphate buffer (pH 7.4) before opening the thorax. After washing in phosphate buffer the tissue was postfixed with 1 % osmiiun tetroxide in phosphate huffer for 2 h. Contrasted en bloc for 12 h with 0.5 % uranyl acetate in 70 % ethanol. Embedded in a 2 8 mixture of methyl and butyl methacrylate. Sectioned at 50 nm. Lead citrate after Reynolds (1963). Plate 3601...
Fig. 99. A thin layer of surfactant covers both non-ciliated (Clara) and ciliated bronchiolar epithelial cells. 167 g male Wistar rat (R 21/ 63) fed 82 mg retinol palmitate (Arovit)/kg body weight daily from February 18 to 22, 1963 by stomach tube. On the 3rd day of the experiment the animal was exposed to an atmosphere containing 15 mg (quartz DQ 12 (particle size <3 pm) per m°air for 5 h using Polley s dust tunnel. Fixed in alcohol-chloroform-glacial acetic acid after Carnoy. Paraffin section, unstained, embedded in glycerol. Interference contrast FI lOOx/1.36/ 00/-. An alveolar macrophage containing (birefringent) quartz particles is being eliminated via the airways... Fig. 99. A thin layer of surfactant covers both non-ciliated (Clara) and ciliated bronchiolar epithelial cells. 167 g male Wistar rat (R 21/ 63) fed 82 mg retinol palmitate (Arovit)/kg body weight daily from February 18 to 22, 1963 by stomach tube. On the 3rd day of the experiment the animal was exposed to an atmosphere containing 15 mg (quartz DQ 12 (particle size <3 pm) per m°air for 5 h using Polley s dust tunnel. Fixed in alcohol-chloroform-glacial acetic acid after Carnoy. Paraffin section, unstained, embedded in glycerol. Interference contrast FI lOOx/1.36/ 00/-. An alveolar macrophage containing (birefringent) quartz particles is being eliminated via the airways...
In three separation schemes, retinyl, retinal, and retinol palmitate isomos were analyzed [665]. A silica colunm was used for all separations. Seven retinal isomers (7-, 9-, 11-, n-cis, 7,9-, ll,13-di-c/s, and all-rnms) were eluted and baseline resolved in 18 min with a 97/3 -heptane/methyl /-butyl ether (A = 371nm) mobile phase. The seven retinol isomers (9-, 11-, 13-cis, 7,9-, 7,13-, 9,13-, 11,13-di-cis, 9,11,13-tri-cij, and all-/ru s) were incompletely resolved and eluted in 22 min using a 94/6 n-heptane/methyl /-butyl ether (2 = 325 nm) mobile phase. Finally, retinyl isomers (9-, 11-, 13-c , 7,9-9,13-di-c/y) were incompletely resolved in 5 min using a 99/1 n-heptane/methyl /-butyl ether (A = 325 nm) mobile phase. For this study 0.1 ng injections were made. [Pg.241]

Many poorly water soluble substances can, molecularly disperse, adsorb or absorb on or into micelles. These micellar solutions are optically clear. This is called solubilisation. Examples from the Dutch formulary FNA are oral aqueous preparations with vitamin A (retinol palmitate) or D (chole-calciferol (Table 18.15)). Another example is a licensed oral mixture with ciclosporin. [Pg.369]

Vitamin A as all-trans Retinol palmitate 0.55 microgram 1818 lU 2. The format in lU has already been left in 1956... [Pg.467]

CAS 79-81-2 373404)8-2 EINECS/ELINCS 201-228-5 Synonyms Retinol, hexadecanoate Retinol palmitate Vitamin A palmitate Definition Ester of retinol and palmitic add Empiriced CjjHgoOj... [Pg.2414]


See other pages where Retinol palmitate is mentioned: [Pg.1589]    [Pg.140]    [Pg.111]    [Pg.1589]    [Pg.372]    [Pg.1427]    [Pg.147]    [Pg.3195]    [Pg.1159]    [Pg.1739]    [Pg.886]    [Pg.954]    [Pg.111]    [Pg.3828]    [Pg.2424]    [Pg.877]    [Pg.613]    [Pg.278]    [Pg.613]   
See also in sourсe #XX -- [ Pg.111 ]

See also in sourсe #XX -- [ Pg.1082 ]

See also in sourсe #XX -- [ Pg.111 ]

See also in sourсe #XX -- [ Pg.29 , Pg.111 ]




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Palmitate

Palmitates

Palmitic

Retinol

Retinol palmitate activity in AM bioassay syste

Retinol palmitate isomers

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