Article Number: DRJAFS668320935

DOI: https://doi.org/10.26765/DRJAFS668320935

ISSN: 2354-4147

Vol. 9 (2), Pp. 12-17

Copyright © 2021

Author(s) retain the copyright of this article


Original Research Article

Physiochemical and phytochemical analysis of oil from Persea american, Garcinia kola, and Annona muricata seeds

Momodu, I. O.*

Jideonwo, A.

Odidi, D. O.

Agofure, P.E.1

Momoh, D.

Uwangue, E.


Abstract

Oils from Annona muricata (soursop), Persea americana (avocado pear), and Garcinia kola (bitter kola) seeds were extracted using n-hexane as solvent. The different oils were analyzed and evaluated to determine their physicochemical characteristics using only the n-hexane extract. The results of the physicochemical analysis showed the following values for Annona muricata (soursop), Persea americana (avocado pear) and Garcinia kola (bitter kola) oils respectively: pH: 4.10, 6.80, 5.40; Peroxide: 5.4, 8.40, 5.60 (meq/kg); Iodine: 72.74, 102.54,52.18; Specific gravity:1.79, 9.26, 0.84; Saponification: 49.09, 61.26, 16.28 (mg); Unsaponification: 51.16, 61.26, 16.28. However, three extracts (n-hexane, aqueous, and ethanol) were screened for phytochemicals such as saponins, tannins, and alkaloids and analyzed. Results of the phytochemical analysis revealed the absence of tannins and alkaloids in n-hexane extracts of the three seed oils including the aqueous and ethanol extracts of soursop but present in the aqueous extracts of both bitter kola and avocado pear. The infra-red (IR) analysis however revealed several peaks with a specific frequency of absorption for these oils, though similarities and variations between the functional groups were present.


Keywords: Physicochemical, phytochemical, solvent extracts, infra-red


 Received: August 2, 2020  Accepted: February 5, 2021  Published: February 28, 2021

Momodu Et Al


Copyright © 2021 Direct Research Journal of Agriculture and Food Science