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Indian Journal of Pure & Applied Biosciences (IJPAB)
Year : 2017 , Volume 5, Issue 2
Page No. : 987-993
Article doi: : http://dx.doi.org/10.18782/2320-7051.2846
Rheometry of Roselle (Hibiscus sabdariffa L.) Seed Oil
Karma, Bako Rimamcwe1*, U. D. Chavan1, C. A. Nimbalkar2 and S. P. Kahar3
1Department of Food Science and Technology, Mahatma Phule Krishi Vidyapeeth, Rahuri
2Department of Statistics, Mahatma Phule Krishi Vidyapeeth, Rahuri
3Department of Agricultural Process Engineering, Mahatma Phule Krishi Vidyapeeth, Rahuri
*Corresponding Author E-mail: uttamchavan08@gmail.com
Received: 13.04.2017 | Revised: 22.04.2017 | Accepted: 23.04.2017
ABSTRACT
The viscosity of Roselle seed oil was studied to investigate the flow consistency index (K) and flow behavior index (n) while subjecting the oil to a shear rate of 10-10,000 per second for 4 minutes modeled with SAS15 software based on Ostwald-de Waele power law equation. The outcome of the analysis showed index properties of K and n as 0.029 and 2.068 respectively. The value of n (2.068) > 1; predicts a dilatancy a shear thickening behavior evident in the increased viscosity and decreased fluidity with increased shear rate. Dilatancy is a rare behavior in food material typical in sausage slurry, homogenized peanut butter, some types of honey and 40 % raw corn starch solution. The linoleic fatty was the major essential fatty acid found in the Roselle seed oil. These finding shows that Roselle seed oil possesses a huge industrial novel application.
Keywords: Roselle seed oil, Ostwald-de Waele, Dilatancy
Full Text : PDF; Journal doi : http://dx.doi.org/10.18782/2320-7051.2846
Cite this article:
Karma, B.R., Chavan, U.D., Nimbalkar, C.A. and Kahar, S.P., Rheometry of Roselle (Hibiscus sabdariffa L.) Seed Oil, Int. J. Pure App. Biosci. 5(2): 987-993 (2017). doi: http://dx.doi.org/10.18782/2320-7051.2846
