title: Antioxidant and antibacterial activities of selected varieties of thai mango seed extract.
abstract: This study reports the antioxidant and antibacterial activities of four fresh mango seed extracts from Thai varieties. Total phenol contents determined by the Folin-ciocalteu method revealed the highest values to be in MKE, Chok-a-nan variety (399.8 mgGAE/g extract) and MSE of Nam-dok-mai variety (377.2 mgGAE/g extract). Both extracts showed potent ABTS˙+ radical and DPPH˙ radical scavenging activities with the lower half inhibition concentration (IC50) values than those of the reference compounds; vitamin C, trolox and BHA, respectively. Their antioxidant property of MSE and MKE is strongly correlated with the total phenol contents (r=0.98 and 0.98, respectively). When combined the MSE and MKE of the Fah-lun variety showed the strongest antioxidant activity. All mango seed extracts showed interesting antibacterial activity against both gram positive and gram negative bacteria as determined by disc diffusion method. The most sensitive pathogenic strain inhibited by all extracts (especially Kaew variety) was Pseudomonas aeruginosa ATCC 27853. This work suggests potential applications for practical uses of mango seed extracts from Thai varieties, as sources of antioxidant and antibacterial agents.
authors.affiliation: Protein and Enzyme Technology Research Unit and Center of Excellence for Innovation in Chemistry, Department of Chemistry, Faculty of Science, Mahasarakham University, Maha Sarakham 44150, Thailand.
authors.forename: Saranyu
authors.initials: S
authors.lastname: Khammuang
authors.forename: Rakrudee
authors.initials: R
authors.lastname: Sarnthima
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D000975:Antioxidants / Q000494:pharmacology*; D001205:Ascorbic Acid / Q000737:chemistry; D001419:Bacteria / Q000187:drug effects; D052160:Benzothiazoles / Q000737:chemistry; D001713:Biphenyl Compounds / Q000737:chemistry; D002839:Chromans / Q000737:chemistry; D004058:Diffusion; D016166:Free Radical Scavengers / Q000737:chemistry; D007202:Indicators and Reagents; D031022:Mangifera / Q000737:chemistry*; D008826:Microbial Sensitivity Tests; D010636:Phenols / Q000032:analysis; D010851:Picrates / Q000737:chemistry; D010936:Plant Extracts / Q000494:pharmacology; D012639:Seeds / Q000737:chemistry; D013451:Sulfonic Acids / Q000737:chemistry; D013785:Thailand
chemical_list: D000900:Anti-Bacterial Agents; D000975:Antioxidants; D052160:Benzothiazoles; D001713:Biphenyl Compounds; D002839:Chromans; D016166:Free Radical Scavengers; D007202:Indicators and Reagents; D010636:Phenols; D010851:Picrates; D010936:Plant Extracts; D013451:Sulfonic Acids; C002502:2,2'-azino-di-(3-ethylbenzothiazoline)-6-sulfonic acid; C004931:1,1-diphenyl-2-picrylhydrazyl; D001205:Ascorbic Acid; C010643:6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid