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    • 4. 发明授权
    • Soluble melanin
    • 可溶性黑色素
    • US5225435A
    • 1993-07-06
    • US674489
    • 1991-03-25
    • John M. PawelekSeth J. Orlow
    • John M. PawelekSeth J. Orlow
    • A23L1/275A61K8/72A61K31/785A61Q17/04C09B69/10C12P17/00C12P17/10
    • C12P17/00A23L5/43A23L5/47A61K31/785A61K8/72A61Q17/04C09B69/104C12P17/10
    • A melanin that is soluble in an aqueous solution at a pH of at least 5 to 9 at a temperature of 0 to 100.degree. C. The melanin is further characterized by being capable of being filtered through at least a 0.45 micron size filter. Still further, the melanin is characterized by having a molecular weight of greater than 10,000 kilodaltons. The melanin is useful for providing a naturally-appearing tan to mammalian skin and hair. Such melanin can be produced by combining dopachrome and 5,6-dihydroxyindole (or allowing dopachrome to spontaneously form 5,6-dihydroxyindole) and an appropriate enzyme or by combining 5,6-dihydroxyindole and 5,6-dihydroxyindole-2-carboxylic acid or by incubating 5,6-dihydroxyindole-2-carboxylic acid alone. The melanin is also useful for providing a sun-screen to mammalian skin and hair, to treat post-inflammatory hypo- and hyperpigmentation, to tint glass and plastic, to protect industrial materials against ultraviolet damage, and as a coloring agent in foodstuffs such as coffee, tea, soda, whiskey and liquors.
    • 在0至100℃的温度下,在至少5至9的pH下可溶于水溶液的黑色素。黑色素的进一步特征在于能够通过至少0.45微米尺寸的过滤器过滤。 此外,黑色素的特征在于具有大于10,000千道尔顿的分子量。 黑色素可用于向哺乳动物皮肤和头发提供天然存在的棕褐色。 这种黑色素可以通过组合多巴色胺和5,6-二羟基吲哚(或允许多巴色素自发形成5,6-二羟基吲哚)和合适的酶或通过将5,6-二羟基吲哚和5,6-二羟基吲哚-2-羧酸 或通过单独孵育5,6-二羟基吲哚-2-羧酸。 黑色素还可用于向哺乳动物皮肤和头发提供防晒剂,以治疗炎症后期和色素沉着过度,使玻璃和塑料变色,以保护工业材料免受紫外线损伤,以及作为食品中的着色剂,例如 咖啡,茶,苏打水,威士忌和烈酒。