LIPIDS - CHOLESTEROL RICH 化学特性,用途語,生産方法
农业用途
Lipids, diverse group of organic compounds in living
organisms, are insoluble in water but soluble in organic
solvents such as chloroform, benzene, etc. Lipids are
present in all living cells, but their proportion varies from
tissue to tissue.
Lipids are broadly classified as complex lipids and
simple lipids, the former being the esters of long chain
fatty acids (like glycerides, glycolipids, phospholipids
and waxes), and the latter being devoid of fatty acids and
inclusive of steroids and terpenes.
Lipids have a wide variety of functions in living
organisms. Fats and oils are convenient means of storing
food energy in plants and animals. Triglycerides
accumulate in certain areas, such as adipose tissues in
human beings and in plant seeds, where they represent a
form of energy storage. Phospholipids and sterols (such
as cholesterol) are major components of cell or plasma
membranes. Waxes provide vital water proofing for body
surfaces. Terpenes include vitamins A, E and K and
phytol; the latter is a component of chlorophyll and
occurs in essential oils such as menthol and camphor.
Steroids include adrenal hormones, sex hormones and
bile acids.
Lipids can combine with proteins to form
lipoproteins (like cell membranes in bacterial cell walls),
and may associate with polysaccharides to form
lipopolysaccharides.
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