维基百科: Since the natural abundance of raspberry ketone is very low, it is prepared industrially by a variety of methods from chemical intermediates.鉴于自然界中树莓酮的含量极低,工业中通常通过多种化学中间物合成。It is one of the most expensive natural flavor components used in the food industry. The natural compound can cost as much as $20,000 per kg.树莓酮是食品工业里使用的最昂贵的天然香精。每公斤自然化合物可以卖到20000美金一公斤。按这个价格算,100mg需要差不多12rmb,这一瓶120粒就要1440rmb,你觉得120rmb卖5瓶给你可能么?
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