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<p><i>Citrus reticulata</i> is a major fruit of Darjeeling hills and worldwide famous for its unique taste, flavour and different bioactive components like antioxidants, antibacterials, phenolics etc. However, very limited information is available regarding its quantitative nutritional profile. Hence, this study was undertaken to determine the phytochemical composition of Darjeeling mandarin and their antioxidant and antibacterial properties. The results showed that the sample DL4 from Sittong, Darjeeling had highest TSS value (12.33 ± 1.12º Brix) and total phenol content (1540.651 ± 0.0028&#xa0;µg GAE/ml). PCA showed positive correlation among metal chelating, vitamin C and acidity of the fruits. GC-MS analysis showed numerous metabolites with DL4 having maximum number of compounds. Highest antibacterial activity was recorded in TL4 with more than 12&#xa0;mm inhibition zone against the bacteria i.e., <i>E. coli</i>, <i>Bacillus subtilis</i>, <i>Staphylococcus aureus</i> and <i>Klebsiella pneumoniae</i>. Cluster analysis based on metabolites showed highest similarities between sample TL1 and YK1. The results suggest that the samples have antioxidant and antibacterial potential which can be utilized through future scientific exploration.</p>

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Insight into the antioxidant, antibacterial potential and GC-MS based metabolite profiling of Darjeeling mandarin (Citrus reticulata Blanco) from the Eastern Himalaya of India

  • 期刊论文

  • 发表日期：

    2026年2月16日

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  • Sujit Sarkar,
  • Arindam Ghosh,
  • William Tamang,
  • Natasha Gurung,
  • Malay Bhattacharya,
  • R. N. Padaria,
  • R. R. Burman,
  • Satya Priya,
  • Soumya Majumder

摘要

Citrus reticulata is a major fruit of Darjeeling hills and worldwide famous for its unique taste, flavour and different bioactive components like antioxidants, antibacterials, phenolics etc. However, very limited information is available regarding its quantitative nutritional profile. Hence, this study was undertaken to determine the phytochemical composition of Darjeeling mandarin and their antioxidant and antibacterial properties. The results showed that the sample DL4 from Sittong, Darjeeling had highest TSS value (12.33 ± 1.12º Brix) and total phenol content (1540.651 ± 0.0028 µg GAE/ml). PCA showed positive correlation among metal chelating, vitamin C and acidity of the fruits. GC-MS analysis showed numerous metabolites with DL4 having maximum number of compounds. Highest antibacterial activity was recorded in TL4 with more than 12 mm inhibition zone against the bacteria i.e., E. coli, Bacillus subtilis, Staphylococcus aureus and Klebsiella pneumoniae. Cluster analysis based on metabolites showed highest similarities between sample TL1 and YK1. The results suggest that the samples have antioxidant and antibacterial potential which can be utilized through future scientific exploration.