Assertion: melanin | /r/HasProperty | insoluble
Facets:
value: in aqueous solutions
type: OTHER
value: in water
type: LOCATION
value: in the presence of buffer
type: OTHER
value: in acids
type: OTHER
value: usually
type: DEGREE
value: in organic solvents
type: OTHER
Source sentences:
text: The melanin at present being used in the pharmaceutical and cosmetic industry is either derived from chemical formulations or derived from micro-organisims other than Tyrosinase and is insoluble in water.
text: As melanin is insoluble, information on melanin structure gleaned in the prior century derives largely from spectroscopic analyses of melanin and characterization of melanin degradation products (Wakamatsu and Ito, 2002).
text: Melanin usually is insoluble in water and forms a gummy solid in test tubes.
text: This melanin is insoluble in organic solvents, acids, aqueous solutions, and only partially dissolves in alkaline solutions.
text: In both reactions, melanin formation occurred, but when the enzymes were present, the melanin could be filtered through a 0.45 micron filter, whereas in the presence of buffer only, the melanin was insoluble and could not be filtered.