Original scientific paper DOI: 10.17508/CJFST.2020.12.2.06
Comparative study of extraction yield and antioxidant property of sweet orange peels (Citrus Sinesis) essential oil
OYEBOLA ODUNAYO OLABINJO1,2* AND ALESSANDRA LOPEZ OLIVEIRA2
1Department of Agricultural Engineering, Federal University of Technology, Akure, Ondo State, Nigeria
2Departamento de Engenharia de Alimentos, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Av. Duque de Caxias Norte, 225, 13635 900 Pirassununga, SP, Brazil
| ARTICLE INFO | ABSTRACT |
| Article history: Received: September 25, 2019 Accepted: June 16, 2020 |
The research evaluates the extraction yield and antioxidant potentials of essential oil (EO) of sweet orange peels using pressurized liquid extraction (PLE), Soxhlet (Sox) and hydro distillation (HD). The extracts were investigated to find out the antioxidant properties using 2, 2 -diphenyl-1- picryl-hydrazyl (DPPH) and 2, 2 azino-bis (3-ethylbenzothiazoline-6-sulfonate) radical (ABTS•+). PLE and Soxhlet extracted essential oil showed additional polyphenol compounds and tannins using thin layer chromatogram (TLC) and chemical analyses, respectively. Hydrodistillation indicating a pure essential oil without identified tannins and polyphenols with the highest ABTS activity compared to other produced essential oils of PLE and Soxhlet. The major chemical constituents of the pure essential oil were identified by gas chromatography-mass spectrometry (GC-MS) and they include limonene (90.72%), myrcene (2.82%) and octanol acetate (1.24%). PLE had moderate high yield within short extraction time and the highest antioxidant (DPPH) and can be adjusted to individual materials to maximize the extraction yield and antioxidant property. |
| Keywords: essential oil GC-MS TLC plate sweet orange peels |