Term
lipids
carbon-hydrogen-oxygen |
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Definition
group of compounds that dissolve in organic solvents/not water soluble
fatty acids - triglycerides
phospholipids - sterols |
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Term
| major characteristics of lipids |
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Definition
not water soluble
fats solid at room temp
oil liquid at room temp
energy 9/kcal
provides satiety(fullness)
flavor
texture
cushion major body organs
temp regulation |
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Term
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Definition
| chain of carbon atoms bonded and surrounded by hydrogen (even #s) |
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Term
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Definition
Glycerides, more correctly known as acylglycerols, are esters formed from glycerol and fatty acids.
Glycerol has three hydroxyl functional groups, which can be esterified with one, two, or three fatty acids to form monoglycerides, diglycerides, and triglycerides.
Vegetable oils and animal fats contain mostly triglycerides, but are broken down by natural enzymes (lipases) into mono and diglycerides and free fatty acids. |
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Definition
| are a class of lipids that are a major component of all cell membranes as they can form lipid bilayers. Most phospholipids contain a diglyceride, a phosphate group, and a simple organic molecule such as choline; one exception to this rule is sphingomyelin, which is derived from sphingosine instead of glycerol. The first phospholipid identified as such in biological tissues was lecithin, or phosphatidylcholine, in the egg yolk, by Theodore Nicolas Gobley, a French chemist and pharmacist, in 1847. The structure of the phospholipid molecule generally consists of hydrophobic tails and a hydrophilic head. It is usually found with cholesterol molecules which are found in-between the spaces of the phospholipid. |
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Term
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Definition
| also known as steroid alcohols, are a subgroup of the steroids and an important class of organic molecules. They occur naturally in plants, animals, and fungi, with the most familiar type of animal sterol being cholesterol. Cholesterol is vital to cellular function, and a precursor to fat-soluble vitamins and steroid hormones. |
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simple form of lipds
differ in length (10-22) |
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