Mukuyang'ana chinsinsi cha khungu lowala komanso lowala? Osayang'ananso patali kuposa beta-arbutin, chinthu champhamvu chowunikira pakhungu chomwe chikupangitsa dziko lokongola kukhala lamphamvu. β-Arbutin ndi ufa wonyezimira wonyezimira, wosungunuka mosavuta m'madzi, methanol, ethanol, propylene glycol ndi glycer ...
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