Unsaturated Fatty Acids 8 CH3- CH2-CH2-CH2-CH2=CH2-CH2-C-OH 3- Octenoic Acid[3-辛烯酸] 5 4 CH3CH2=CH2-CH2CH2=CH2-CH2-C-OH 3,6- Octadienoic Acid[3,6-辛二烯酸] Short hand:8:1(△3) 8:2(△3,6)
Unsaturated Fatty Acids CH3 CH2 CH2 CH2 CH2 CH2 CH2 C OH O 4 2 1 8 7 6 5 3 CH3 CH2 CH2 CH2 CH2 CH2 CH2 C OH O 4 2 1 8 7 6 5 3 3 - Octenoic Acid [3-辛烯酸] 3, 6 - Octadienoic Acid [3，6-辛二烯酸] Short hand: 8:1 (Δ3) 8:2 (Δ3, 6)
cis and trans Fatty Acids HH CH3(CH2)7C=C-(CH)7C-OH 109 (油酸) cis 9-Octadecenoic Acid(oleic CH3(CH2)7 C=C-(CH2)7 C-OH H (反油酸) trans 9-Octadecenoic Acid (elaidic acid)
cis 9 - Octadecenoic Acid (oleic) trans 9 - Octadecenoic Acid (elaidic acid) O CH3 (CH2 ) 7 C C (CH2 ) 7 C OH H H 10 9 O CH3 (CH2 ) 7 C C (CH2 ) 7 C OH H H cis and trans Fatty Acids （油酸） （反油酸）
unsaturated Fats cids(Essential Linoleic acid: cis, cis, 9, 12-Octadecadienoic acid Linolenic acid: cis, cis, cis, 9, 12. 15 Octadecatrienoic acid亚麻酸 Arachidonic acid: cis, cis, cis, cis, 5.8 11.14 Eicosatetraenoic acid花生四烯酸
Polyunsaturated Fatty Acids (Essential) Linoleic acid: cis, cis, 9, 12 - Octadecadienoic acid （亚油酸） Linolenic acid: cis, cis, cis, 9, 12, 15 - Octadecatrienoic acid （亚麻酸） Arachidonic acid: cis, cis, cis, cis, 5, 8, 11, 14 - Eicosatetraenoic acid （花生四烯酸）
Naturally-occurring Fatty Acids R-CH5CH=CH-CH CH=CH-CH,C-OH 5 4 1、 cis form(顺式) 2、 Not conjugated-- isolated double bond.(非 共轭,双键是分开的) 3、 Even numbered fatty acids(偶数碳)
Naturally-occurring Fatty Acids R CH2 CH CH CH2 CH CH CH2 C OH O 7 6 5 4 3 1、cisform (顺式） 2、Not conjugated --- isolated double bond.（非 共轭，双键是分开的） 3、Even numbered fatty acids（偶数碳）
Glycerides ommon Systematic F orm C ommon source Name ame L. Saturated Fatty Acids Butyric Butanoic CH3(CH2)2COOH butterfat Caproic Hexanoic CH3(CH2)4COOH butterfat, coconut and palm nut oils Caprylic Octanoic CH3(CH2)6COOH coconut and palm nut oils butterfat apr Decanoic CH3(CH2)8COOH coconut and palm t oils. butterfat 月桂酸 Laur Dodecanoic CH3(CH2)10CO0H coconut and palm ut oils. butterfat 肉豆蔻酸 Myristic Tetradecanoic CH3(CH2)12COOH coconut and Palm nut oil, most animal and plant fats 棕榈酸(软 Palmitic Hexadecanoic ch3(CH2)14 COoH practically all animal and 脂酸) olant fats 硬脂酸 Stearic Octadecanol CI3(CH2)16COOH animal fats and minor component of plant fats 花生酸 Arachidic Eicosane CH3(CH2)18COOH peanut oil
Classification of Fatty Acids Present as Glycerides in Food Fats I. Saturated Fatty Acids Butyric Butanoic CH3(CH2)2COOH butterfat Caproic Hexanoic CH3(CH2)4COOH butterfat, coconut and palm nut oils Caprylic Octanoic CH3(CH2)6COOH coconut and palm nut oils, butterfat Capric Decanoic CH3(CH2)8COOH coconut and palm nut oils, butterfat Lauric Dodecanoic CH3(CH2)10COOH coconut and palm nut oils, butterfat Myristic Tetradecanoic CH3(CH2)12COOH coconut and Palm nut oil, most animal and plant fats Palmitic Hexadecanoic CH3(CH2)14COOH practically all animal and plant fats Stearic Octadecanoi c CH3(CH2)16COOH animal fats and minor component of plant fats Arachidic Eicosanoic CH3(CH2)18COOH peanut oil Common Name Systematic Name Formula Common source 月桂酸 肉豆蔻酸 棕榈酸（软 脂酸） 硬脂酸 花生酸