Propyl gallate can effectively prevent the oxidation of fats and oils, and plays a great role in food antioxidant technology. It is one of the excellent antioxidants. The following is a synthesis method focusing on propyl gallate.
1. Synthesis method of propyl gallate
1.1 Preparation of propyl gallate
The gallic acid in natural plants contains gallic acid, and the gallic acid and propyl gallate are obtained by leaching gallic acid to obtain an extract.
1.2 Catalytic Synthesis of Propyl Gallate with Chitosan Sulfate
Using chitosan sulfate as a catalyst, propyl gallate (PG) was synthesized by direct esterification of gallic acid with n-propanol.
1.3 Synthesis of Propyl Gallate Catalyzed by Sodium Bisulfate
Synthesis of propyl gallate with sodium bisulfate as catalyst and gallic acid and n-propanol as raw materials.
1.4 Microwave-assisted synthesis of propyl gallate
Using gallic acid and n-propanol as raw materials and sodium bisulfate as a catalyst, propyl gallate was successfully synthesized by microwave irradiation.