酯類 Ester
精油化學
當在醇和羧酸的官能團之間發生酯化反應時會形成酯。
酯基本上是這兩個官能團的組合，並且包含與氧分子具有雙鍵的碳原子與氧分子的單鍵，以及與另一碳分子的單鍵（通常寫為-COO-或-COOC）。
酯類可以從適當的化學名稱中識別，其通常以後綴
-yl, -ate 或 -ester
結尾。在精油中發現的常見酯是
主要效用包括：
️My YL MEMBER ONLY
加入Gloria YL會員可繼續閱讀更多秘笈…
The word ester was coined in 1848 by a German chemist Leopold Gmelin, probably as a contraction of the German Essigäther, “acetic ether”.
In chemistry, an ester is a chemical compound derived from an acid (organic or inorganic) in which at least one –OH (hydroxyl) group is replaced by an –O–alkyl (alkoxy) group. Usually, esters are derived from a carboxylic acid and an alcohol. Glycerides, which are fatty acid esters of glycerol, are important esters in biology, being one of the main classes of lipids, and making up the bulk of animal fats and vegetable oils. Esters with low molecular weight are commonly used as fragrances and found in essential oils and pheromones. Phosphoesters form the backbone of DNA molecules. Nitrate esters, such as nitroglycerin, are known for their explosive properties, while polyesters are important plastics, with monomers linked by ester moieties. Esters usually have a sweet smell and are considered high-quality solvents for a broad array of plastics, plasticizers, resins, and lacquers. They are also one of the largest classes of synthetic lubricants on the commercial market.