4.7 Article

Citrus reticulata Leaves Essential Oil as an Antiaging Agent: A Comparative Study between Different Cultivars and Correlation with Their Chemical Compositions

Journal

PLANTS-BASEL
Volume 11, Issue 23, Pages -

Publisher

MDPI
DOI: 10.3390/plants11233335

Keywords

Citrus reticulata; GC-MS; antiaging; molecular docking; chemometric analysis; industries development; drug discovery

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Funding

  1. Institutional Fund Projects
  2. Ministry of Education and King Abdulaziz University, DSR, Jeddah, Saudi Arabia [IFPIP:1004-249-1443]

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The study used a mass-based metabolomic approach to analyze the essential oil compositions of six cultivars of Citrus reticulata. The antiaging capability of the essential oils was investigated by measuring their ability to inhibit enzymes involved in aging. The results identified certain cultivars with promising potential for antiaging skincare products.
The mass-based metabolomic approach was implemented using GC-MS coupled with chemometric analysis to discriminate between the essential oil compositions of six cultivars of Citrus reticulata. The antiaging capability of the essential oils were investigated through measurement of their ability to inhibit the major enzymes hyaluronidase, collagenase, and amylase involved in aging. GC-MS analysis resulted in the identification of thirty-nine compounds including beta-pinene, d-limonene, gamma-terpinene, linalool, and dimethyl anthranilate as the main components. Multivariate analysis using principal component analysis (PCA) and hierarchal cluster analysis (HCA) successfully discriminated the cultivars into five main groups. In vitro antiaging activity showed that Kishu mandarin (Km) (2.19 +/- 0.10, 465.9 +/- 23.7, 0.31 +/- 0.01 mu g/mL), Cara mandarin (Cm) (3.22 +/- 0.14, 592.1 +/- 30.1, 0.66 +/- 0.03 mu g/mL), and Wm (8.43 +/- 0.38, 695.2 +/- 35.4, 0.79 +/- 0.04%) had the highest inhibitory activity against hyaluronidase, collagenase, and amylase, respectively. Molecular docking studies on the major compounds validated the activities of the essential oils and suggested their possible mechanisms of action. Based on our result, certain cultivars of Citrus reticulata can be proposed as a promising candidate in antiaging skin care products.

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