Home           Contact us           FAQs           
 
   Journal Page   |   Aims & Scope   |   Author Guideline   |   Editorial Board   |   Search
    Abstract
2011 (Vol. 3, Issue: 02)
Article Information:

Chemical Composition of Seed Oil from Roselle (Hibiscus sabdariffa L.) and the Kinetics of Degradation of the Oil During Heating

G. Bouanga-Kalou, A. Kimbonguila, J.M. Nzikou, F.B. Ganongo-Po, F.E. Moutoula, M. Tchicaillat-Landou, R.M. Bitsangou, Th. Silou and S. Desobry
Corresponding Author:  Jean Mathurin Nzikou 

Key words:  Essential fatty acid, DSC, Hibiscus sabdariffa L. seed, kinetics, viscosity, ,
Vol. 3 , (02): 117-122
Submitted Accepted Published
2010 December, 28 2011 January, 27 2011 February, 20
Abstract:

The aim of the study was to investigate the chemical composition and the kinetics of degradation of roselle seed oil during heating. The seed is a good source of oil (23.27%). The physical properties of the oil extracts showed the state to be liquid at room temperature and indicated that the oil had refractive index, 1.4652; the peroxide value, 3.15 (meq O2/kg oil); free fatty acid, 0.82%; iodine value, 97.78%; saponification value, 198.45 and viscosity, 15.15 (mPa.s at 25C). Gas liquid chromatography technique has been developed for identification and quantitative determination of total unsaturated and saturated fatty acids shows that the crude oil had 73.4 and 26.57%, respectively. DSC indicates the presence of two components in oil extracted. The first peak at low melting point appears at -20.53C (Hf = +3.00 J/g) and the second peak appears to -2.17C (Hf = +0.49 J/g). The degradation kinetic of the oil was also investigated. The thermal oxidation of the double bonds of the oil showed a first-order thermal oxidation kinetic and the Arrhenius plot yielded a straight line with a slope equivalent to activation energy of 9.041 KJ/mol. There is the possibility of considering the seed as feed supplement and its oil for industrial application.
Abstract PDF HTML
  Cite this Reference:
G. Bouanga-Kalou, A. Kimbonguila, J.M. Nzikou, F.B. Ganongo-Po, F.E. Moutoula, M. Tchicaillat-Landou, R.M. Bitsangou, Th. Silou and S. Desobry, 2011. Chemical Composition of Seed Oil from Roselle (Hibiscus sabdariffa L.) and the Kinetics of Degradation of the Oil During Heating.  Research Journal of Applied Sciences, Engineering and Technology, 3(02): 117-122.
    Advertise with us
 
ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
Submit Manuscript
   Current Information
   Sales & Services
   Contact Information
  Executive Managing Editor
  Email: admin@maxwellsci.com
  Publishing Editor
  Email: support@maxwellsci.com
  Account Manager
  Email: faisalm@maxwellsci.com
  Journal Editor
  Email: admin@maxwellsci.com
  Press Department
  Email: press@maxwellsci.com
Home  |  Contact us  |  About us  |  Privacy Policy
Copyright © 2009. MAXWELL Science Publication, a division of MAXWELLl Scientific Organization. All rights reserved