منابع مشابه
The Chemistry of Insect Hemolymph
alpha,alpha-Trehalose, a sugar previously regarded as a product characteristic of certain lower plants, has been identified as a major blood sugar of insects. Trehalose has been isolated in pure form from the blood of pupae of the silk moth, Telea polyphemus, and has been recognized chromatographically in all the insects examined, which comprise 10 species belonging to 5 different orders. Treha...
متن کاملBiochemistry and biosynthesis of insect pigments
The functional role and commercial importance of insect pigments have been studied for well over a century. They are classified into those synthesized by insects, which include anthraquinones, aphins, pterins, tetrapyrroles, ommochromes, melanins and papiliochromes, and those sequestered from their host plants, the antioxidative carotenoids and water-soluble flavonoids. They can also be categor...
متن کاملQuantitative analysis of phenol oxidase activity in insect hemolymph.
We describe a simple, inexpensive, and robust protocol for the quantification of phenol oxidase activity in insect hemolymph. Discrete volumes of hemolymph from Drosophila melanogaster larvae are applied to pieces of filter paper soaked in an L-3, 4-dihydroxyphenylalanine (L-DOPA) solution. Phenol oxidase present in the samples catalyzes melanin synthesis from the L-DOPA precursor, resulting in...
متن کاملA method for separation of trehalose from insect hemolymph.
In many insect species, trehalose (a-o-glucopyranosyl-a-o-glucopyranoside) is the predominant circulating saccharide that plays a central role in carbohydrate metabolism (18). In order to understand the physiological interactions of this metabolite with regulatory agents, precise determinations of trehalose levels in tissues are essential. The presence of other saccharides makes a direct in sit...
متن کاملSelf-circulation System of Insect Hemolymph for Insect-mountable Biofuel Cell
A self-circulation system is presented for a self-refueling insect-mountable biofuel cell (BFC) using trehalose, the main sugar of insect hemolymph. The maximum power density of 10.5 μW/cm was obtained from cockroach hemolymph (CHL) with added trehalase and mutarotase. The electrodes were protected by a dialysis membrane to prevent decrease of open-circuit voltage by adsorption of proteins in t...
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ژورنال
عنوان ژورنال: Annual Review of Entomology
سال: 1961
ISSN: 0066-4170,1545-4487
DOI: 10.1146/annurev.en.06.010161.000451