A Complete Collection of 100000 Whys
Fav十万个为什么
为什么切开的茄子会变黑？
简单的摘要：切开的茄子会变黑的原因主要是茄子中含有酚类物质和多酚氧化酶、与空气中的氧气发生酶促褐变反应。
1、含有酚类物质和多酚氧化酶：茄子本身含有大量的酚类物质和多酚氧化酶，当茄子被切开时，细胞结构被破坏，这些物质和酶就会接触并发生反应。
2、酶促褐变反应：多酚氧化酶会催化酚类物质与空气中的氧气发生氧化反应，生成黑色素，导致茄子表面变黑。这是一个酶促褐变反应的过程。
3、氧气的影响：空气中的氧气是酶促褐变反应的必要条件，当茄子切开与空气接触时，氧气就会参与反应，加速黑色素的生成。
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