1. Synthesis of capric glycerides in a solvent-free system was investigated from glycerol and capric acid catalyzed by immobilized Candida sp .

2. The presence of capric acid enhanced the inhibitory effects of caprylic acid and lauric acid.

3. The inventive dicarboxyl capric amide surfactant has the structural formula as above.

4. Ethyl decanoate was synthesized from capric acid and ethanol by using ferric potassium alum as catalyst.

5. A dicarboxyl capric amide surfactant and synthetic method thereof are provided.

6. With the presence of capric acid, the IC50 values of caprylic and lauric acid deceased obviously.