EVALUATION OF THE CHEMICAL COMPOSITION, ANTIOXIDANT CAPACITY, AND ANTIBACTERIAL ACTIVITY OF ESSENTIAL OIL FROM MANDARIN PEELS (CITRUS RETICULATA L.) GROWN IN DONG THAP PROVINCE, VIETNAM

Authors

DOI:

https://doi.org/10.15421/jchemtech.v33i1.308775

Keywords:

antibacterial activity, antioxidant capacity, oil, physicochemical properties

Abstract

Citrus reticulata L. essential oil (CrEO) is widely used in food technology, cosmetics, and pharmaceuticals due to its distinct aroma and bioactive properties. In this study, Citrus reticulata L. was collected in Dong Thap province, Vietnam and its peel essential oil was extracted through distillation. Several physicochemical properties of the oil were analyzed, including acid, saponification, and ester values, as well as relative and absolute density, freezing point, and fragrance retention. The results showed that CrEO exhibited an acid value of 0.748 mg KOH/g, a saponification value of 67.320 mg KOH/g, and an ester value of 66.572 mg KOH/g, with fragrance retention lasting over 33 h. The chemical composition of CrEO was determined by gas chromatography-mass spectrometry (GC-MS), and the results revealed six main components namely α-Pinene (0.93 %), β-Pinene (0.61 %), β-Myrcene (1.88 %), D-Limonene (96.09 %), Linalool (0.16 %), and α-Terpineol (0.33 %), which are monoterpenes. Furthermore, the study showed the weak antioxidant capacity of oil and strong antibacterial activities against pathogenic bacteria were determined using the paper disc diffusion method.

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Published

2025-04-15

Issue

Vol. 33 No. 1 (2025): Journal of Chemistry and Technologies

Section

Organic Chemistry

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