单甘酯(Monoglyceride)又称为单脂肪酸甘油酯,是一种由一分子甘油和一分子脂肪酸组成的酯。它在食品、化妆品以及塑料等多个领域中具有广泛的应用。
合成技术目前工业上合成单甘酯主要采用化学法,包括直接酯化法、甘油解法和油脂水解法。其中以牛油或其他天然油脂的甘油解反应工艺应用最为广泛。该方法是在高温(大于220℃)下以碱为催化剂,催化油脂与甘油之间的反应,产物主要为单甘酯和二甘酯的混合物(各约占45%)。然而,这一过程存在一些缺点:需要使用过量的甘油、在高温条件下反应能耗大、高温会导致不饱和脂肪酸发生降解等。酶法合成单甘酯是另一种方法,通过天然油脂或合成甘三酯(TG)的水解、醇解及甘油解,以及脂肪酸(或其酯)与甘油的酯化转酯化来实现。
食品添加剂最大允许使用量和残留量标准中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
三硬脂酸甘油酯 | glycerol tristearate | 555-43-1 | C57H110O6 | 891.497 |
硬脂酸烯丙酯 | allyl stearate | 6289-31-2 | C21H40O2 | 324.547 |
—— | (2-oxo-1,3-dioxolan-4-yl)methyl stearate | 71572-29-7 | C22H40O5 | 384.557 |
硬酯酸甲酯C18 | Methyl stearate | 112-61-8 | C19H38O2 | 298.51 |
—— | glyceryl octadec-5-yne-7Z,9Z,12Z-trienoate | 76152-36-8 | C21H32O4 | 348.483 |
—— | (2,2-dimethyl-1,3-dioxolan-4-yl)methyl stearate | —— | C24H46O4 | 398.627 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
甘油棕榈酸酯 | rac-1-monopalmitoylglycerol | 542-44-9 | C19H38O4 | 330.508 |
1-硬脂酰-sn-甘油 | 1-O-stearoyl-sn-glycerol | 22610-61-3 | C21H42O4 | 358.562 |
—— | 1-acetoxy-3-stearoyloxy-propan-2-ol | 27177-85-1 | C23H44O5 | 400.599 |
—— | 1-butyryloxy-3-stearoyloxy-propan-2-ol | 820-76-8 | C25H48O5 | 428.653 |
1-棕榈酸-3-硬脂酸甘油酯 | 1-pelmitoyl 3-stearoyl glycerol | 17708-08-6 | C37H72O5 | 596.976 |
1,3-二硬脂酸甘油酯 | 1,3-distearoylglycerol | 504-40-5 | C39H76O5 | 625.029 |
—— | 1-monooleoyl glycerol | 111-03-5 | C21H40O4 | 356.546 |
1-O-十八烷基-2-O-甲基甘油 | 3-Hydroxy-2-methoxypropyl stearate | 18679-04-4 | C22H44O4 | 372.589 |
—— | 1-oleyol-3-stearoyl-2-hydroxyl propane | 5512-57-2 | C39H74O5 | 623.014 |
乙二醇硬脂酸酯SE | Ethylene glycol monostearate | 111-60-4 | C20H40O3 | 328.5 |
2,3-二乙酰氧基丙基硬脂酸酯 | 1,2-diacetoxy-3-stearoyloxy-propane | 33599-07-4 | C25H46O6 | 442.637 |
1,2-硬脂酸甘油酯 甘油硬脂酸 | DL-α,β-distearin | 51063-97-9 | C39H76O5 | 625.029 |
2,3-二(1-氧代丙氧基)丙基硬脂酸酯 | 1,2-bis-propionyloxy-3-stearoyloxy-propane | 27579-33-5 | C27H50O6 | 470.69 |
—— | 1,2-bis-decanoyloxy-3-stearoyloxy-propane | 139665-46-6 | C41H78O6 | 667.067 |
—— | 2-Capronoyloxy-1,3-bis-stearoyloxypropan | 66411-62-9 | C45H86O6 | 723.174 |
—— | 2-Caprinoyloxy-1,3-bis-stearoyloxypropan | 56968-93-5 | C49H94O6 | 779.282 |
—— | 2-butyryloxy-1,3-bis-stearoyloxy-propane | 66411-63-0 | C43H82O6 | 695.12 |
—— | 1,2-bis-hexanoyloxy-3-stearoyloxy-propane | 56149-04-3 | C33H62O6 | 554.852 |
2,3-二(1-氧代丁氧基)丙基硬脂酸酯 | 1,2-bis-butyryloxy-3-stearoyloxy-propane | 56149-03-2 | C29H54O6 | 498.744 |
—— | 1,2-bis-lauroyloxy-3-stearoyloxy-propane | 89612-97-5 | C45H86O6 | 723.174 |
—— | 1,2-bis-myristoyloxy-3-stearoyloxy-propane | 56846-96-9 | C49H94O6 | 779.282 |
—— | 2-Capryl-distearin | 66411-61-8 | C47H90O6 | 751.228 |
2,3-二[(1-氧代辛基)氧基]丙基硬脂酸酯 | 1,2-bis-octanoyloxy-3-stearoyloxy-propane | 56149-05-4 | C37H70O6 | 610.959 |
三硬脂酸甘油酯 | glycerol tristearate | 555-43-1 | C57H110O6 | 891.497 |
—— | 1,2-dipalmitoyl-3-stearoyl glycerol | 2177-98-2 | C53H102O6 | 835.389 |
2-十八烷酸单甘油酯 | glycerol monostearate | 621-61-4 | C21H42O4 | 358.562 |
羧基甲基硬脂酸酯 | octadecanoic acid carboxymethyl ester | 5767-84-0 | C20H38O4 | 342.519 |
—— | 2-oleoyl-1-steraoylglycerol | 21059-30-3 | C39H74O5 | 623.014 |
—— | 1-Stearo-2,3-dielaidin | 93452-41-6 | C57H106O6 | 887.465 |
1,2-二油酰基-3-硬脂酰-外消旋-甘油 | 1-Stearoyl-2,3-dioleoylglycerin | 2410-28-8 | C57H106O6 | 887.465 |
—— | 2-linoleoyl-1-oleoyl-3-stearoylglycerol | 7162-26-7 | C57H104O6 | 885.449 |
2-羟基-3-(膦酰氧基)丙基硬脂酸酯 | 1-Stearoyl-lysophosphatidic acid | 22002-86-4 | C21H43O7P | 438.542 |
硬脂酸烯丙酯 | allyl stearate | 6289-31-2 | C21H40O2 | 324.547 |
—— | (2-oxo-1,3-dioxolan-4-yl)methyl stearate | 71572-29-7 | C22H40O5 | 384.557 |
鲨肝醇 | batyl alcohol | 544-62-7 | C21H44O3 | 344.579 |
—— | (2,2-dimethyl-1,3-dioxolan-4-yl)methyl stearate | —— | C24H46O4 | 398.627 |
—— | 2,3-isopropylidene glyceryl stearate | —— | C24H46O4 | 398.627 |
—— | (S)-2,2-dimethyl-1,3-dioxolan-4-ylmethyl n-octadecanoate | 111425-86-6 | C24H46O4 | 398.627 |
—— | 1-O-stearoyl-2-O-methyl-sn-glycerol-3-O-phosphothioate | 1232772-42-7 | C22H45O6PS | 468.635 |