Publication: Valorization of essential oils from citrus peel powder using hydro-distillation
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Date
2023
Journal Title
Sustainable Chemistry and Pharmacy
Journal ISSN
Volume Title
Publisher
Elsevier B.V.
Abstract
Citrus species exhibit many important natural bioactive compounds, such as ascorbic acid, essential oils, and antioxidant substances. Citrus essential oils are a complex mixture of volatile and non-volatile compounds obtained from the citrus fruit peel, which are discarded as waste. These citrus peels are a rich source of essential oils having medicinal benefits such as antioxidant, anticancer, antidiabetic, and anti-inflammatory properties. An experiment was carried out on two Citrus species (Citrus reticulata cv. (kinnow) and Citrus X sinensis (orange)) peel powder to study the essential oil composition. The kinnow and orange peels were dried using the sun and tray drying method and were compared. The peel powder obtained by sun and tray drying was tested for antioxidant activity (DPPH assay, TPC activity, and ascorbic acid activity). The essential oil was extracted from peel powder using a sustainable hydro-distillation technique. The results revealed that the highest yield was obtained in tray-dried orange peel powder (9.98%), followed by tray-dried kinnow peel powder (9.70%). The bioactive composition of the extracted essential oils was analyzed by gas chromatography-mass spectrometry (GC-MS). The kinnow and orange peel essential oil composition was predominated with D-limonene, terpenoids, and sesquiterpenes, enhancing its medicinal value. Thus, this study developed a green, sustainable, and eco-friendly hydro-distillation technique for citrus essential oil extraction. � 2023
Description
Keywords
Characterization, Citrus peels, D-limonene, Essential oils, GC-MS, Hydro-distillation, Tray drying