Fats

The term “fat” can indeed refer to different substances depending on the context.
In chemistry, “fat” can refer to an organic molecule that is insoluble in water but soluble in organic solvents.
In the context of nutrition, “fat” often refers to the macronutrient found in foods.
In the context of Body fat, “fat” may refer to adipose tissue.
In the context of industrial and commercial, “fat” might refer to substances used in various products and processes, such used in food production, cosmetics, pharmaceuticals, and lubricants.

In micro – level explanation, Fat usually means any ester of fatty acids means fats comes into existence as an ester when fatty chains gets attached to glycerol through ester bonds. Each fatty acid molecule joins with glycerol through an ester linkage, resulting in the formation of a triglyceride molecule. This process, known as esterification.
In simple language, Fatty Acid and glycerol like each other and decide to marry When they do, fat as a priest helps them to get marry. This ‘marriage’ happens through a process of marriage registration, knows as esterification.

The classification starts from Lipid.
Lipids are a wide-ranging group of compounds that include fats, phospholipids, prostaglandins, steroids (Cholesterol), Glycolipids, carotenoids, Lipid-soluble Vitamins, and waxes found in foods and the human body.
Fats are also known as triglycerides, which are comprised of fatty acids. These fatty acids are in chain form, if one fatty acid is attached to glycerol (backbone) then it is known as monoglyceride and if two fatty acids are attached to glycerol, then it is known as Diglycerides and if three fatty acids are attached to glycerol, then it is known as Triglycerides. Triglycerides are the most common type of fat found in the body and in food.PMID: 15722563
These Triglycerides are found in cells known as fat cells, which are specialized to store fats. When these types of cells unite together in large form, they are known as adipose tissue. Adipose tissue is made up of many fat cells that store fat in the human or animal bodies.

All fats are lipids, but not all lipids are fats. Fats fall under the category of lipids.

In a simple way, Lipids, Lipid is a grandfather, and he has sons names of fats, phospholipids, prostaglandins, steroids (Cholesterol), Glycolipids, carotenoids, Lipid-soluble Vitamins, and waxes. Fats, being one of the children, himself has children, namely fatty acids and glycerol. Fats decided to make marriage between them. The “marriage” between gives birth to monoglycerides, diglycerides, and triglycerides, which are different forms of lipids. They all reside in a huge building named Adipose tissue.

Fats can be liquids or solids at room temperature, and may respectively be described as oils or simply as fats on this basis. In other words, if fat is liquid at a 20 to 25 degrees Celsius, that is room temperature, it is called oil and if it remains solid due to their higher degree of saturation, then it is called fat.
The primary difference between fats and oils lies in their physical state at room temperature.

when once we get more deep inside fatty acids, we come to different types of fats, which are based on fat’s fatty acid composition. Saturated fats and unsaturated fats, further unsaturated fats gets into different types based on fatty acid composition like Monounsaturated fats, Polyunsaturated fats. Further, Polyunsaturated fats get into different types based on fatty acid composition, like Omega-3 fatty acids and Omega-6 fatty acids.

There is one more fat, known as trans fats. Will discuss it further.

But What are single and double bonds between carbon atoms in fatty acids?

Coming soon

The word Steroid from biochemical definition it basically means derived from cholesterol because the basic backbone of steroid molecule is cholesterol.

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