Die Pigmente der Ommin- und Ommatingruppe, eine neue Klasse von Naturfarbstoffen

Becker, Erich

doi:10.1007/978-3-642-51845-4_24

Cited by 8 publications

(3 citation statements)

References 20 publications

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“…However, melanins can be easily confused with a major class of pigments derived from tryptophane which are responsible for visible dark pigmentation of the integument of a number of animals. These pigments were called ommochromes by Becker (1941). Being polyphenols the ommochromes can have the reducing properties of melanins and also the inertness of melanins, particularly when the ommochrome is in a highly polymerized state and has been subjected to some fixation or dehydration process (Goodwin & Srisukh, 1950).…”

Section: Properties Of Melaninsmentioning

confidence: 99%

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The Colours ofOphiocomina Nigra(Abildgaard): II. The Occurrence of Melanin and Fluorescent Pigments

Fontaine¹

1962

J. Mar. Biol. Ass.

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The ophiuroid, Ophiocomina nigra, displays a colour variation ranging from black to yellow-orange. The pigment responsible for the dark colours has been studied histochemically and by means of chemical techniques applied to extracts. The solubility, oxidation-reduction, fluorescence and other chemical properties of this pigment indicate that it is a true melanin. The visible colour of die melanin depends upon its oxidation state in the integument. Fully oxidized pigment is dark brown; partially reduced pigment is fawn coloured.

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Section: Properties Of Melaninsmentioning

confidence: 99%

“…The chemical and physical properties of ommochromes were described by Becker (1941Becker ( ,1942 whose account has been supplemented and corrected by Butenandt et al in a continuing series of papers beginning in 1954.…”

Section: Properties Of Melaninsmentioning

confidence: 99%

The Colours ofOphiocomina Nigra(Abildgaard): II. The Occurrence of Melanin and Fluorescent Pigments

Fontaine¹

1962

J. Mar. Biol. Ass.

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“…The ommochromes were apparently first discovered by A. Johansen in 1924 in the primary and secondary pigment cells of the ommatidium of the compound eye of Drosophila, which contained two different types of pigment granules-purplered and ocher [2]. The term "ommochromes" itself first appeared in the works of the German researcher E. Becker [3][4][5]. Becker proposed the general name "Ommochromes" for the pigments contained in the eyes of Drosophila and Calliphora flies, subdividing them into two large groups, "Ommatins" and "Ommines" [6].…”

Section: Introductionmentioning

confidence: 99%

Ommochromes of the Compound Eye of Arthropods from the Insects and Crustaceans Classes: Physicochemical Properties and Antioxidant Activity

Донцов¹,

Оstrovsky²

2023

Arthropods - New Advances and Perspectives

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The chapter is devoted to the study of the physicochemical properties of the ommochromes of the compound eye of arthropods. Ommochromes are the characteristic pigments of invertebrates. They are believed to function in the eyes as screening and protective pigments that protect photoreceptor cells from the damaging effects of light. Ommochromes were isolated, purified, and obtained in preparative quantities from crustaceans (Crustacea; order Decapoda) and insects (Insecta; families Stratiomyidae, Sphingidae, Blaberidae, Acrididae, and Tenebrionidae). The physicochemical properties of the isolated ommochromes were studied by absorption and fluorescence spectroscopy, electron spin resonance (ESR) and Mossbauer spectroscopy, and high-performance liquid chromatography. The antioxidant activity of ommochromes was studied by methods of inhibiting lipid peroxidation induced by reactive oxygen species and variable valence metal ions and by quenching luminol chemiluminescence. The data obtained are important both for understanding the biological functions of arthropod eye ommochromes and for the development of new pharmacological preparations based on ommochromes for the prevention and treatment of pathologies associated with the development of oxidative stress.

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Some Aspects of Insect Chemistry

Smissman

1965

Journal of Pharmaceutical Sciences

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Die Pigmente der Ommin- und Ommatingruppe, eine neue Klasse von Naturfarbstoffen

Cited by 8 publications

References 20 publications

The Colours ofOphiocomina Nigra(Abildgaard): II. The Occurrence of Melanin and Fluorescent Pigments

The Colours ofOphiocomina Nigra(Abildgaard): II. The Occurrence of Melanin and Fluorescent Pigments

Ommochromes of the Compound Eye of Arthropods from the Insects and Crustaceans Classes: Physicochemical Properties and Antioxidant Activity

Some Aspects of Insect Chemistry

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