Suwannarach, N; Kumla, J; Watanabe, B; Matsui, K; Lumyong, S in [Suwannarach, Nakarin; Kumla, Jaturong; Lumyong, Saisamorn] Chiang Mai Univ, Dept Biol, Fac Sci, Chiang Mai, Thailand; [Suwannarach, Nakarin; Kumla, Jaturong; Lumyong, Saisamorn] Chiang Mai Univ, Ctr Excellence Microbial Divers & Sustainable Uti, Chiang Mai, Thailand; [Watanabe, Bunta] Kyoto Univ, Inst Chem Res, Kyoto, Japan; [Matsui, Kenji] Yamaguchi Univ, Grad Sch Sci & Technol Innovat Agr, Yamaguchi, Japan; [Lumyong, Saisamorn] Royal Soc Thailand, Acad Sci, Bangkok, Thailand published Characterization of melanin and optimal conditions for pigment production by an endophytic fungus, Spissiomyces endophytica SDBR-CMU319 in 2019, Cited 61. Recommanded Product: Isobenzofuran-1(3H)-one. The Name is Isobenzofuran-1(3H)-one. Through research, I have a further understanding and discovery of 87-41-2.
Melanin is a natural pigment that is produced by filamentous fungi. In this study, the endophytic species, Spissiomyces endophytica (strain SDBR-CMU319), produced a brownblack pigment in the mycelia. Consequently, the pigment was extracted from the dried fungal biomass. This was followed by pigment purification, characterization and identification. Physical and chemical characteristics of the pigment showed acid precipitation, alkali solubilization, decolorization with oxidizing agents, and insolubility in most organic solvents and water. The pigment was confirmed as melanin based on ultraviolet-visible spectroscopy, Fourier-transform infrared, and electron paramagnetic resonance spectra analyses. The analyses of the elemental composition indicated that the pigment possessed a low percentage of nitrogen, and therefore, was not 3,4-dihydroxyphenylalanine melanin. Inhibition studies involving specific inhibitors, both tricyclazole and phthalide, and suggest that fungal melanin could be synthesized through the 1,8-dihydroxynaphthalene pathway. The optimum conditions for fungal pigment production from this species were investigated. The highest fungal pigment yield was observed in glucose yeast extract peptone medium at an initial pH value of 6.0 and at 25 degrees C over three weeks of cultivation. This is the first report on the production and characterization of melanin obtained from the genus Spissiomyces.
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