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高中生物“叶绿体中色素的提取和分高”实验,目的是让学生自己验证叶绿体中色素的种类和各种色素的颜色.实验所需的材料和用具,可参照课本所述,事先做好充分准备.一、叶绿素的提取称2～3克绿色的菠菜叶或番薯叶等,将叶片剪碎,放入研钵中,加入少许二氧化硅(为使研磨充分)和碳酸钙(为防止叶绿素破坏),再加入2～3毫升的丙酮(如无丙酮,可用95%的酒精,因叶绿素不溶于水,
The purpose of the high school biology “Pigment extraction and fractionation in chloroplasts” experiment is to allow students to verify the types of pigments in the chloroplasts and the colors of various pigments. The materials and utensils required for the experiment can be described in the textbooks. Prepare. 1. Extraction of chlorophyll: Weigh 2 to 3 grams of green spinach leaves or sweet potato leaves, etc., cut the leaves and put them into a mortar, add a little silica (to fully polish) and calcium carbonate (to prevent chlorophyll). Destruction), and then add 2 to 3 ml of acetone (if no acetone, use 95% alcohol, because chlorophyll is insoluble in water,