title: Antioxidant and antimicrobial activities of commercial rice wine extracts of Taiwanese Allium fistulosum.
abstract: The antioxidant and antibacterial activities of commercial rice wine extracts obtained from different plant parts of Allium fistulosum were assayed. The results showed that commercial rice wine extracts of A. fistulosum contained 28.3-95.9 μL/mL allicin and exhibited significant antioxidant and antibacterial activities. The DPPH radical scavenging capacity ranged from 90.2% to 52.1%, and the IC50 value ranged from 14.6 to 26.0 μg/mL. The total phenolic content of wine extracts was 56.4-198.9 mg GAE/g extracts. The TEAC assay of extracts ranged from 6.2 to 15.5 mmol/g extracts. Antibacterial activities were tested against 4 bacteria b y using agar disc diffusion and tube dilution tests. All extracts exhibited antibacterial activities against gram-positive bacteria, such as Bacillus subtilis and Staphylococcus aureus, and gram-negative bacteria, such as Escherichia coli and Pseudomonas aeruginosa. Thus, A. fistulosum wine extracts could be used as natural and functional additives in cooking foods.
authors.affiliation: Department of Nursing, Mackay Junior College of Medicine, Nursing, and Management, Taipei 11260, Taiwan. Electronic address: s354@eip.mkc.edu.tw.
authors.forename: Tsan-Chang
authors.initials: TC
authors.lastname: Chang
authors.affiliation: Department of Food Science, Yuanpei University of Medical Technology, Hsinchu City 30015, Taiwan.
authors.forename: Hung-Der
authors.initials: HD
authors.lastname: Jang
authors.affiliation: Department of Center for General Education, St. Mary's Junior College of Medicine, Nursing and Management, Yi-lan 26644, Taiwan.
authors.forename: Wang-De
authors.initials: WD
authors.lastname: Lin
authors.affiliation: Sunshin Area farmer's Association, Yi-lan County 26641, Taiwan.
authors.forename: Peng-Fu
authors.initials: PF
authors.lastname: Duan
mesh_terms: D000490:Allium / Q000737:chemistry*; D000900:Anti-Bacterial Agents / Q000737:chemistry; D000890:Anti-Infective Agents / Q000737:chemistry*; D000975:Antioxidants / Q000737:chemistry*; D004220:Disulfides; D012275:Oryza / Q000737:chemistry*; D010636:Phenols / Q000032:analysis; D010936:Plant Extracts / Q000737:chemistry*; D013441:Sulfinic Acids / Q000737:chemistry*; D013624:Taiwan; D014920:Wine / Q000032:analysis*
chemical_list: D000900:Anti-Bacterial Agents; D000890:Anti-Infective Agents; D000975:Antioxidants; D004220:Disulfides; D010636:Phenols; D010936:Plant Extracts; D013441:Sulfinic Acids; C006452:allicin
keywords: Allicin; Allium fistulosum; Antibacterial activity; Antioxidant activity; Welsh onion