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21food.cn
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左旋多巴98% 黎豆提取物 猫豆提取物【森元】
从藜(Mucuna sempervirens Hemsl)种子中可提取出氨基酸类——左旋多巴 ... 以豆粉计,收率约为2%。左旋多巴也可由L-酪氨酸氧化得到。将酪氨酸溶于甲酸磷酸中,升温至40℃保温12h用20倍的蒸馏水稀释,稀释液通过强酸性苯乙烯系阳离子交换树脂吸附未反应的酪 ...
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