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Dietary Fats and Lipids

2021-08-18 01:13:05 UTC

Dietary fats refers to the sum of the oils and fats in various foods we eat every day. A rough analysis of dietary fat mainly includes edible vegetable oil, animal food, bean products, nuts and other major food sources. Lipids have important biological functions. Fat is the energy provider of organisms.

2021-08-18 01:14:32 UTC

Structure of lipids

2021-08-18 01:16:23 UTC

Lipids are an essential component of the cell membrane. They are commonly made of a glycerol backbone, 2 fatty acid tails and a phosphate group.

Fun Fact

2021-08-18 01:17:23 UTC

Soy foods decrease lipids in your blood

Triglyceride structure

cbel8524 — 2021-08-18 01:18:32 UTC

Types of fats

2021-08-18 01:21:51 UTC

Saturated
Transfats
Monounsaturated fats
Polyunsaturated fats

Energy content

cbel8524 — 2021-08-18 01:22:13 UTC

37 kJ/g

Functions

cbel8524 — 2021-08-18 01:23:33 UTC

•Cushions internal and reproductive organs.
•Carrier for fat soluble vitamins and phytochemicals

Adult daily requirements

cbel8524 — 2021-08-18 01:25:43 UTC

30% of total energy intake (Max) = 70g/day
Saturated fat < 10%of total fat intake = <25g/day

Adult Daily Requirements

yzha8370 — 2021-08-18 01:27:53 UTC

TOTAL FAT
The dietary reference intake(DRI) for fat in adults is 20% to 35% of total calories from fat. That is about 44 frams to 77 grams of fat per day if you eat 2,000 calories a day.

It is recommended to eat more of some types of fat as they provide health benefits.

·Monounsaturated fat: 15% to 20%
·Polyunsaturated fat: 5% to 10%
·Saturated fat: less than 10%
·Trans fat: 0%
·Cholesterol: less than 300mg per day

Fun Fact

2021-08-18 01:30:28 UTC

Lipids are a concentrated source of energy for our bodies

Fun Fact

swan4322 — 2021-08-18 01:34:10 UTC

Fat keep the body warm and immobilizes the internal organs

Nutritional value 1. DigestibilityThe digestibility of a fat is related to its melting point. The more unsaturated fatty acids it contains, the lower the melting point and the easier it is to digest. Therefore, the digestibility of vegetable oil can generally reach 100%. Animal fats, such as tallow and sheep oil, contain more saturated fatty acids, with melting points above 40℃ and low digestibility of 80% ~ 90%. 2. Essential fatty acidsThe content of linoleic acid and linolenic acid in vegetable oil is higher than that of animal fat. 3. Fat soluble vitaminsThe stored fat of animals contains almost no vitamins, but the liver is rich in vitamins A and D, and the fat of milk and eggs is also rich in vitamins A and D.. Vegetable oil is rich in vitamin e. These fat-soluble vitamins are necessary to maintain human health.

2021-08-18 01:36:46 UTC

Fat Structure

yzha8370 — 2021-08-18 01:37:22 UTC

This is the structure of a triglyceride and saturated, monounsaturated and polyunsaturated fatty acids.

Fun Fact

swan4322 — 2021-08-18 01:37:40 UTC

The polar bear can survive in the forzen Arctic mainly by having a thick layer of fat under its skin for feat and energy

Fat Structure

yzha8370 — 2021-08-18 01:39:57 UTC

Fatty acid composition of common fats and oils.

Functions

swan4322 — 2021-08-18 01:41:21 UTC

Fat mainly exists in the form of energy storage. When the energy in the body is consumed in large quantities, fat will be quickly converted into sugar to provide energy.

Omega 3 and Omega 6 fatty acids

cbel8524 — 2021-08-18 01:42:19 UTC

A polyunsaturated fatty acid with its first double bond three carbons away from the methyl end is an omega-3 fatty acid. Similarly, an omega-6 fatty acid is a polyunsaturated fatty acid with its first double bond six carbons away from the methyl end.

Functions of Fats

yzha8370 — 2021-08-18 01:42:57 UTC

·Help brain development and function 60% of brain is fat.
·As a structural component of cells.
·Support the absorption of vitamins.
·Certain types help to keep a healthy heart and blood vessels.
·Source of energy.

Group 3 members

cbel8524 — 2021-08-18 01:45:34 UTC

Xiaodi Yao
Yanling Zhao
Caitlin Bell
Shiqi Wang
Hannah Kampos- Green