However, even if the fuel is left for too long it changes into another form of oil that fetches a fairly high market price as a medicinal substance.
然而，即使是这些燃料被放置的时间久了后变成了另一种油，它们仍有很高的市场价值，可用于医药。
2
The essential oil , naringin, pigment, pectin and many kinds of activated ingredients in the inside and outside of the pomelo peel have good value for edible and medicinal purposes.
柚子的内外皮中含有香精油、柚皮甙、黄色素和果胶等多种活性成分，具有较高的食用和药用价值。
3
Classified by natural products and utilization they can be divided into 6 types: medicinal plants, oil plants, fibre plants, colophony and balata plants, perfume plants and amylum plants.