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The nature of pigment in pigmented apocrine hidrocystoma

Journal of Cutaneous Pathology, 1985
Apocrine hidrocystomas are often pigmented clinically. The cause of this pigmentation is not known. A case of pigmented apocrine hidrocystoma is presented with evidence of melanin as the underlying mechanism of the pigmentation. Review of an additional 150 cases suggests that this is rare.
R, Malhotra, J, Bhawan
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Liquid chromatography of natural pigments

Biomedical Chromatography, 2000
The newest results in the application of various liquid chromatographic techniques for the analysis of natural pigments in pure state and in complicated matrices are compiled. The methods employed for the separation and quantitative determination of the different pigment classes (flavonoids, coumarins, chlorophylls, etc.) are described and critically ...
T, Cserháti   +3 more
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The bioefficacy of microemulsified natural pigments in egg yolk pigmentation

British Poultry Science, 2014
1. This study was designed to test the hypothesis that microemulsified carotenoid products show improved bioavailability over corresponding regular preparations, leading to greater yolk pigmentation at lower dosages. 2. The first trial was conducted using a maize-soya bean basal diet supplemented with either 0.25, 0.5, 0.75, 1.0 and 1.25 g/kg of ...
P Y, Chow, S Z, Gue, S K, Leow, L B, Goh
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Marine natural products. Pigments

Journal of Chemical Education, 1973
Examines the chemistry of natural pigments found in sea urchins and sea lilies, including spinochromes and carotenoids.
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Production of Natural Pigments Using Microorganisms

Journal of Agricultural and Food Chemistry, 2023
Pigments are involved in many aspects of human life, including food, cosmetics, and textiles. At present, the pigment market is mainly occupied by synthetic pigments. However, synthetic pigments have gradually presented safety and environmental problems. Therefore, humans have begun to focus on the use of natural pigments. In contrast to the extraction
Zhijie Qin   +4 more
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THE NATURAL PIGMENTS

Russian Chemical Reviews, 1963
CONTENTS I. Introduction 283 II. Pigments of the aliphatic and alicyclic series 283 III. Pigments of the aromatic series 284 IV.
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