4.5 Article

Chemical, antimicrobial, and molecular characterization of mortino (Vaccinium floribundum Kunth) fruits and leaves

期刊

FOOD SCIENCE & NUTRITION
卷 6, 期 4, 页码 934-942

出版社

WILEY
DOI: 10.1002/fsn3.638

关键词

anthocyanins; antioxidants; matK; polyphenols; rbcL

资金

  1. International Foundation for Science (IFS) [D/5451-1]

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Fruits and leaves of Vaccinium spp. are known for their high content of bioactive compounds, but the chemical and biological characteristics of mortino (Vaccinium floribundum Kunth) have not been fully described. In this study, the levels of polyphenols, antioxidant capacity, anthocyanins, antimicrobial activity, and genetic variability were determined in mortino plants. The Folin-Ciocalteu's, ABTS scavenging, pH differential, and well diffusion methods were used to evaluate the levels of polyphenols, antioxidant capacity, anthocyanins, and antimicrobial activity, respectively. The genetic variability was evaluated by sequencing of the matK and rbcl DNA regions. Polyphenol content was up to 229.81mg gallic acid equivalents/100g, the average antioxidant capacity was 11.01mmol Trolox equivalents/100g, and anthocyanin content was up to 1,095.39mg/100g. Mortino extracts significantly inhibited the growth of Gram-negative bacteria including Burkholderia gladioli, Burkholderia cepacia, Salmonella Typhimurium, Vibrio parahaemolyticus, Vibrio harveyi, Vibrio vulnificus, Escherichia coli, and Pseudomona aeruginosa, as well as Gram-positive bacteria such as Probionibacterium propionicum, Staphylococcus aureus, and Enterococcus faecalis showing greater inhibition halos than those produced by the antibiotic ampicillin. A polymorphic nucleotide was found in position 739 of the matK region. This study shows the potential of mortino for the food and pharmaceutical industries.

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