Healthy eating habits.ppt for school going children

The term lipid is extremely broad, and can be used to describe thousands of molecules with different chemical structures and functions. The most defining characteristic that is shared by all lipids, is that they are not soluble in water. Learning about lipids begins by considering the simplest and most abundant ones, which are fatty acids and triacylglycerols (TAGs). This can be further simplified, because a handful of them are the most relevant. The study of lipids requires a basic knowledge of chemistry; to aid beginners in understanding this chapter without requiring external sources, the chemical terms mentioned will be described using simple terminology.

Fatty acids are the simplest lipids, and are chemically defined as: a linear, nonbranched, nonpolar hydrocarbon chain that can be saturated or unsaturated, with a single carboxyl group at one end. In this definition, the term linear indicates that they are a chain with a defined beginning and end, that is, they do not contain any rings. Nonbranched means that there are only two ends present on the molecule. Nonpolar indicates that they do not dissolve in water, in contrast to polar molecules which do. A hydrocarbon chain indicates that they only contain hydrogen and carbon; the typical length is 16–22, but shorter and longer molecules can also be found. Saturated fatty acids (SFAs) contain no double bonds (also known as unsaturations), while unsaturated fatty acids contain at least one double bond; triple bonds are not found on fatty acids. Unsaturated fatty acids can be further classified as monounsaturated (MUFAs, monounsaturated fatty acids) if they contain a single double bond, or as polyunsaturated (PUFAs, polyunsaturated fatty acids), if they contain two or more double bonds. A carboxyl group (abbreviated as COOH or as COO− in its ionized form) is chemically an acid group, and its presence is responsible for the term acid in fatty acid. Note that the carboxyl group contains one double bond between the carbon and one of the oxygens (C=O), this double bond is always present, but it does not count towards the number of unsaturations of the fatty acid, only carbon–carbon bonds (C=C) do. These simple rules and definitions have some exceptions, but they are rarely encountered, if at all.

Fatty acids have several names, ranging from trivial to highly systematic, in accordance with the intended audience. For example, the trivial name of a common fatty acid is oleic acid, and although this may be simple to remember and pronounce, it does not include any structural information about it. The same fatty acid can also be named cis-9-octadecenoid acid, a name that fully describes the chemical structure of the molecule, but requires fluency in chemical terms to thoroughly understand.

An alternative, and less complex, naming scheme requires only numbers to indicate the basic properties of a fatty acid: the m:n Δx,y,z system. Unsaturated fatty acids can be further classified as monounsaturated MUF

1. Healthy Eating and Healthy Lifestyle Presented By : Neha Solanki Assistant professor, Department of Food and Nutrition, VVWU YEAR: 2023

2. Had Your Lunch?

3. Food Food gives energy What you eat is the fuel that allows your muscles to move

4. Why should we eat? Energy while running playing jumping climbing, etc. Active participation in school. Strong muscles and bones.

5. Types of foods

6. Storage of energy in the body

7. Daily Meals

8. Eating more………..unhealthy foods!!!!!!!! Make you Overweight…..

9. Water