The Microwave Extraction and Antibacterial Activity of Mango Polyphenols

Polyphenols was extracted from mango kernel seeds by microwave extraction method,and the antibacterial effects of mango polyphenols on Escherichio coli,Staphylococcus aureus,Bacillus subtilis and Typhoid bacillus were detected via filter paper disc method to explore the optimum extraction conditions of polyphenols from mango and the antibacterial activity.The results showed that the best extracting conditions included 60% alcohol as extracting solvent with a solid-solvent ratio of 1:30(g/mL),microwave power 385W,extracting for 1 minute and testing for 3 times.Under these conditions,the extraction rate of mango polyphenols could reach 10.56%.The inhibitory effect of mango polyphenols was E.coli T.bacacillus S.aureus B.subtilis.The relevant minimum inhibition concentration(MICs) of mango polyphenols were 0.2 mg/mL for E.coli,0.2 mg/mL for T.bacacillus,0.4 mg/mL for S.aureus and 0.5 mg/mL for B.subtilis.Above results indicated that mango polyphenols have antibacterial effects and it is possible to be used in food processing and preservation.