Antimicrobial activity, total phenolic and ascorbic acid content of terminalia ferdinandiana leaves at various stages of maturity

Mridusmita Chaliha, Anh Dao Thi Phan, Shan Cao, Qin Li, Julian Gorman, Yasmina Sultanbawa, Daniel Cozzolino

    Research output: Contribution to journalArticlepeer-review

    Abstract

    This work investigated the effect of leaf development (maturity) on morphology, antimicrobial activity, total phenolic (TPC) and ascorbic acid content in leaves of Terminalia ferdinandiana, an endemic plant of Australia. The results of this study indicated that total ascorbic acid was in the range of 23.0 to 35.5 mg/100 g dry weight (DW), showing an increase with advance of maturity. TPCin water and methanolic extracts were in the range of 237.3-598.6 and 210.3-319.6 mg Gallic acid equivalent (GAE)/ g DW, respectively. Leaf extracts exhibited pronounced inhibitory activity towards Staphylococcus aureus where total ascorbic acid and TPC were positively correlated with the observed antimicrobial activity. These results indicated that leaves extracts might be used asan alternative to synthetic antimicrobial agents, with a great potential for application as an environmentally friendly sanitizer in the hospitality and healthcare industries.

    Original languageEnglish
    Pages (from-to)744-756
    Number of pages13
    JournalCurrent Research in Nutrition and Food Science
    Volume8
    Issue number3
    DOIs
    Publication statusPublished - Dec 2020

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