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<p><i>Rhodomyrtus tomentosa</i> fruits, endemic to the Western Ghats were analyzed for its free, bound and esterified phenolics by Ultra High Performance Liquid Chromatography–Mass Spectrometry. Overall, twenty-nine phenolic compounds were identified, amongst them 18 were detected in this fruit for the first time. Gallic acid (80.44 ± 8.74&#xa0;mg/100&#xa0;g) and ellagic acid (107.47 ± 7.28&#xa0;mg/100&#xa0;g) were the most prominent ones found in the bound phenolic fraction and gallic acid (103.76 ± 6.34&#xa0;mg/100&#xa0;g) in the esterified phenolic fraction of the fruit, respectively. Total Phenolic content was found to be highest in bound phenolics (7.09 ± 0.17&#xa0;mg Gallic acid equivalent/g). The antioxidant and antimicrobial activities of the three extracts namely free, bound and esterified phenolic fruit fractions have been analyzed. Bound phenolics exhibited the highest antioxidant potential (DPPH-15.63 ± 0.86; ABTS-34.73 ± 0.07; FRAP-17.89 ± 0.27&#xa0;mg/g Ascorbic acid equivalent). The bound phenolics showed good antimicrobial activity against <i>Bacillus cereus, Staphylococcus aureus</i> and <i>Escherichia coli</i> with a MIC of 0.156, 0.625 and 1.25&#xa0;mg/mL respectively. The exploration of phenolic compounds in Indian variety of <i>Rhodomyrtus tomentosa</i> fruits may provide useful insights on its utilization as a functional food ingredient.</p>

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UHPLC-MS/MS based comprehensive phenolic profiling, antimicrobial and antioxidant activities of Indian Rhodomyrtus tomentosa fruits

  • 期刊论文

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  • 发表日期：

    2025年1月6日

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  • A Divya Priya,
  • Asha Martin

摘要

Rhodomyrtus tomentosa fruits, endemic to the Western Ghats were analyzed for its free, bound and esterified phenolics by Ultra High Performance Liquid Chromatography–Mass Spectrometry. Overall, twenty-nine phenolic compounds were identified, amongst them 18 were detected in this fruit for the first time. Gallic acid (80.44 ± 8.74 mg/100 g) and ellagic acid (107.47 ± 7.28 mg/100 g) were the most prominent ones found in the bound phenolic fraction and gallic acid (103.76 ± 6.34 mg/100 g) in the esterified phenolic fraction of the fruit, respectively. Total Phenolic content was found to be highest in bound phenolics (7.09 ± 0.17 mg Gallic acid equivalent/g). The antioxidant and antimicrobial activities of the three extracts namely free, bound and esterified phenolic fruit fractions have been analyzed. Bound phenolics exhibited the highest antioxidant potential (DPPH-15.63 ± 0.86; ABTS-34.73 ± 0.07; FRAP-17.89 ± 0.27 mg/g Ascorbic acid equivalent). The bound phenolics showed good antimicrobial activity against Bacillus cereus, Staphylococcus aureus and Escherichia coli with a MIC of 0.156, 0.625 and 1.25 mg/mL respectively. The exploration of phenolic compounds in Indian variety of Rhodomyrtus tomentosa fruits may provide useful insights on its utilization as a functional food ingredient.