Indole-5,6-quinone
Encyclopedia
Indole-5,6-quinone is an indolequinone, a chemical compound found in the oxidative browning
reaction of fruits like bananas where it is mediated by the tyrosinase
type polyphenol oxidase from tyrosine
and catecholamine
s leading to the formation of catechol melanin
.
Enzymatic browning
Browning is the process of becoming brown, especially referring to food. Browning foods may be desirable, as in caramelization, or undesirable, as in an apple turning brown after being cut...
reaction of fruits like bananas where it is mediated by the tyrosinase
Tyrosinase
Tyrosinase also known as monophenol monooxygenase is an enzyme that catalyses the oxidation of phenols and is widespread in plants and animals...
type polyphenol oxidase from tyrosine
Tyrosine
Tyrosine or 4-hydroxyphenylalanine, is one of the 22 amino acids that are used by cells to synthesize proteins. Its codons are UAC and UAU. It is a non-essential amino acid with a polar side group...
and catecholamine
Catecholamine
Catecholamines are molecules that have a catechol nucleus consisting of benzene with two hydroxyl side groups and a side-chain amine. They include dopamine, as well as the "fight-or-flight" hormones adrenaline and noradrenaline released by the adrenal medulla of the adrenal glands in response to...
s leading to the formation of catechol melanin
Catechol melanin
Catechol melanins are plant melanins. They yield catechol on alkali fusion. This type of substance can be found in fungi like Ustilago. Indole-5,6-quinone is a chemical compound found in the oxidative browning reaction of fruits like bananas mediated by polyphenol oxidase from tyrosine and...
.