采�后的荔枝果实在自然条件下由于果皮中的多酚氧化酶的作用而容易褐变.某同学为研究荔枝的保鲜效果开展如下实验探究请你帮助完善下列实验Ⅰ Template




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tomski采�后的荔枝果实在自然条件下由于果皮中的多酚氧化酶的作用而容易褐变.某同学为研究荔枝的保鲜效果开展如下实验探究请你帮助完善下列实验Ⅰ coloring