内容正文:
第2课时 油脂 奶油
第七章 第四节 基本营养物质
1.掌握油脂的组成结构特点,增强“宏观辨识与微观探析”能力。
2.了解油脂的主要性质,认识几种常见的高级脂肪酸,培养“变化观念与平衡思想”。
3.认识油脂在日常生活中的应用,了解人造奶油的成分,提高“科学态度与社会责任”。
核心素养发展目标
(一)油脂
1.油脂的组成、分类及结构
(1)组成元素: 。
(2)分类:根据室温下油脂状态,油脂分为 和 。
碳、氢、氧
知识梳理
油 脂肪
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(3)结构
特点:是高级脂肪酸和甘油形成的酯,R1、R2、R3可以相同也可以不相同。几种常见的高级脂肪酸:
饱和脂肪酸
不饱和脂肪酸
硬脂酸:____________
软脂酸:____________
C17H35COOH
C15H31COOH
油酸:____________
亚油酸:____________
C17H33COOH
C17H31COOH
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