alexa Impact of Frying on Fatty Acid Profile and Rheological Behaviour of Some Vegetable Oils | OMICS International | Abstract
ISSN: 2157-7110

Journal of Food Processing & Technology
Open Access

Like us on:

OMICS International organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations
700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)

Research Article

Impact of Frying on Fatty Acid Profile and Rheological Behaviour of Some Vegetable Oils

Ashraf M. Sharoba1* and Mohamed Fawzy Ramadan2

1Food Science Department, Moshtohor Faculty of Agriculture, Benha University, Egypt.

2Biochemistry Department, Faculty of Agriculture, Zagazig University, 44511 Zagazig, Egypt.

*Corresponding Author:
Dr. Ashraf M. Sharoba
Food Science Department
Moshtohor Faculty of Agriculture
Benha University, Egypt
Tel: (20) 002 012 21463079
Fax: (20) 002 0132467786
E-mail: [email protected]

Received date: May 30, 2012; Accepted date: July 06, 2012; Published date: July 10, 2012

Citation: Sharoba AM, Ramadan MF (2012) Impact of Frying on Fatty Acid Profile and Rheological Behaviour of Some Vegetable Oils. J Food Process Technol 3:161. doi: 10.4172/2157-7110.1000161

Copyright: © 2013 Jung YG. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


Rheological properties and fatty acid profile of sunflower oil (SO), cottonseed oil (CO) and palm olein (PO) during deep frying for 4, 8, 12 and 16 h were investigated. In the different systems, linoleic acid decreased while palmitic, stearic and oleic acids increased in the bath oil upon frying. The shear stress versus shear rate data was fitted to Newtonian, Bingham and Herschel-Bulkley rheological models. The flow behavior of fresh and used SO, CO and PO was measured at 25°C. All samples at zero time of frying (fresh oil) showed Newtonian behavior with correlation coefficients greater than 0.99 at 25°C and slight non-Newtonian behavior after 4, 8, 12 and 16 h of frying. Palm olein showed higher increase in viscosity in comparison to CO and SO. Rheological parameters of vegetables oils showed great changes, wherein the highest change in viscosity was recorded after 16 h of frying. Palm olein had higher flow behavior parameters than SO and CO. The increase in frying time caused an increase in K, ηB, τ0HB, τ0B, and η values, while the n values decreased with increasing the frying time. The viscosities of the vegetable oils were plotted against either C18:1 or C18:2 and there were highly positive correlations between them (R2 = 0.99). The temperature dependence of viscosity was studied by using the Arrhenius relationship and the activation energy indicates the sensitivity of the viscosity to the temperature change. The rheological parameters and viscosity measurements can provide a good overall estimate of frying oil quality.

Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2018-19
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

Agri & Aquaculture Journals

Dr. Krish

[email protected]

+1-702-714-7001Extn: 9040

Biochemistry Journals

Datta A


[email protected]

1-702-714-7001Extn: 9037

Business & Management Journals


porn sex

[email protected]

1-702-714-7001Extn: 9042

Chemistry Journals

Gabriel Shaw

Gaziantep Escort

[email protected]

1-702-714-7001Extn: 9040

Clinical Journals

Datta A


[email protected]

1-702-714-7001Extn: 9037


James Franklin

[email protected]

1-702-714-7001Extn: 9042

Food & Nutrition Journals

Katie Wilson

[email protected]

1-702-714-7001Extn: 9042

General Science

Andrea Jason

mp3 indir

[email protected]

1-702-714-7001Extn: 9043

Genetics & Molecular Biology Journals

Anna Melissa

[email protected]

1-702-714-7001Extn: 9006

Immunology & Microbiology Journals

David Gorantl

[email protected]

1-702-714-7001Extn: 9014

Materials Science Journals

Rachle Green

[email protected]

1-702-714-7001Extn: 9039

Nursing & Health Care Journals

Stephanie Skinner

[email protected]

1-702-714-7001Extn: 9039

Medical Journals


Nimmi Anna

[email protected]

1-702-714-7001Extn: 9038

Neuroscience & Psychology Journals

Nathan T


[email protected]

1-702-714-7001Extn: 9041

Pharmaceutical Sciences Journals

Ann Jose

[email protected]

1-702-714-7001Extn: 9007

Social & Political Science Journals

Steve Harry

[email protected]

1-702-714-7001Extn: 9042

© 2008- 2018 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
Leave Your Message 24x7