After comparing the conditions of acid-base and the concentration of vitamin c in fruit can lead to development, such as the extraction of vitamin c in the medical, pharmaceutical, for example, we often find the most common is vitamin c, it would be nice if we could choose the correct raw materials; Save both time and cost, or take vitamin c as an element in the field of beauty products such as face cream, cream, cream, bath and beyond, because science is a science that control everything in life.