复杂碳水化合物的碘测试

This short, targeted simulation is adapted from the full-length “Introduction to Food Macromolecules” simulation.

发现食物中的复杂碳水化合物！在此模拟中，您将被引入复杂碳水化合物的化学结构以及我们饮食中复杂碳水化合物的重要性。首先检查其结构，然后学习如何使用碘测试测试食物样品中复杂的碳水化合物的存在。

跳入食物样本

Begin by jumping inside a potato to initiate an animation that explains the chemical building blocks that make up a complex carbohydrates. Identify the differences between alpha and beta glucose. Learn how a polymer made of simple carbohydrates, such as glucose, can form complex carbohydrates, such as starch. Compare the internal structures of potatoes and broccoli to discover how the structures of starch and cellulose differ despite them both being made from glucose polymer chains. Finally, return to the lab to perform an experiment which will test for the presence of these complex carbohydrates.

Use the Iodine test

您将使用碘测试进行淀粉测试分析食物样品。已经准备了一系列食物样品，并将其各自的溶液放在试管中。对每个食物样品进行实验，并观察随着时间的推移颜色变化。确定测试的积极和负面结果。然后使用您所学的知识来确定哪些食物样品含有复杂的碳水化合物。您朋友的沙拉是否含有复杂的碳水化合物？

查看您的知识

Put your knowledge of complex carbohydrates to the test in quizzes throughout the simulation. Do you know the difference between starch and cellulose?