Application Natural versus Synthetic
Prior to the development of organic chemistry as a science, only substances obtained directly from plants and animals were available for treating diseases, dying clothes, cleansing and perfuming our bodies, and so forth. Extracts of the opium poppy, for instance, have been used since the seventeenth century for the relief of pain. The prized purple dye called Tyrian purple, obtained from a Middle Eastern mollusk, has been known since antiquity. Oils distilled from bergamot, sweet bay, rose, and lavender, have been employed for centuries in making perfume.
Many of these naturally occurring substances were first used without any knowledge of their chemical composition. As organic chemistry developed, though, chemists learned how to work out the structures of compounds. The disease-curing properties of limes and other citrus fruits, for example, were known for centuries, but the chemical structure of vitamin C, the active ingredient, was not determined until 1933. Today there is a revival of interest in folk remedies, and a large effort is being made to identify medicinally important chemical compounds found in plants.
- 小馨划島Lv 51 0 年前最佳解答
在有機化學的發展之前作為科學, 唯一物質被獲得直接地從植物和動物是可利用的為對待疾病, 垂危的衣裳, 洗滌和充滿香氣我們的身體, 等等。鴉片罌粟的萃取物, 例如, 被使用了從第十七個世紀為痛苦的解除。得獎的紫色染料叫Tyrian 紫色, 被獲得從一個中間東部軟體動物, 為人所知從上古。油蒸餾了從香檸檬, 月桂, 玫瑰, 並且淡紫色, 被使用了幾個世紀在做香水。許多這些自然發生的物質第一次被使用了沒有他們的化學成分任一知識。如同有機化學顯現了出, 雖然, 化學家學會怎麼制定出化合物結構。石灰和其它柑桔疾病治療的物產, 例如, 幾個世紀知道, 但維生素C 化學結構, 有效成分, 不是堅定的直到1933 年。今天有利率復蘇在民間補救, 並且大努力被做辨認醫藥上重要化合物在植物中被發現。參考資料： 自己+