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苦杏仁的止咳有效成分是苦杏仁甙,在生药中与它同时存在并分处不同细胞中的还有苦杏仁酶。苦杏仁如系原药贮藏或入药煎汤,苦杏仁酶均不致破坏苦杏仁甙,分解出氢氰酸而降低药效。但如将苦杏仁压碎后贮藏或煎汤,由于苦杏仁酶的作用,均可使苦杏仁甙受到破坏。1978年前上海地区曾根据外地压制苦杏仁饼的经验,大搞综合利用,除将苦杏仁饼代苦杏仁作药用外,每年还能榨油8～9万斤,但
The effective anti-tussive ingredient of bitter almonds is amygdalin, which is present in the crude drug at the same time as it is in different cells. If bitter almonds are stored in the original drug or decocted into the medicine, the bitter amygdalin will not damage the amygdalin and decompose the hydrocyanic acid to reduce the efficacy. However, if bitter almonds are crushed and stored or decocted, the amygdalin can be destroyed due to the effect of bitter amylases. Prior to 1978, the Shanghai area had used the experience of suppressing bitter almonds in other places and carried out comprehensive utilization. In addition to using bitter almonds instead of bitter almonds for medicinal purposes, the oil can be pressed 8 to 90,000 kilograms each year.