Journal
JOURNAL OF FOOD SCIENCE
Volume 77, Issue 6, Pages C614-C619Publisher
WILEY
DOI: 10.1111/j.1750-3841.2012.02709.x
Keywords
antimicrobial; antioxidant; flavonoid; Impatiens balsamina L. phenolic
Categories
Funding
- National Key Technology RD Program [2007BAD61B07]
- Main Academic and Technical Disciplines Leader Training Project Program of Jiangxi Province, China [050007]
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The antioxidant and antimicrobial activities as well as the quantity of phenolic substances of Impatiens balsamina L. stem extracts obtained with various solvent were determined in this study. All of the extracts possessed moderate antioxidant potential in the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging and reducing power assays. Antimicrobial activity was estimated using the cylinder-plate and agar dilution methods against four bacterial and six fungal strains. The extracts showed good antimicrobial activity especially antifungal activity against all of the tested microorganisms. The total phenolic and flavonoid contents ranged from 2.88 to 13.63 mg gallic acid equivalents/g dried extract and 0.98 to 7.87 mg quercetin equivalents/g dried extract, respectively. The results presented here indicate that the I. balsamina stem extracts have antioxidant and antimicrobial properties and are therefore a potential source of antioxidant and antimicrobial agents for the food and pharmaceutical industries.
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