Jump to main content
US EPA
United States Environmental Protection Agency
Search
Search
Main menu
Environmental Topics
Laws & Regulations
About EPA
Health & Environmental Research Online (HERO)
Contact Us
Print
Feedback
Export to File
Search:
This record has one attached file:
Add More Files
Attach File(s):
Display Name for File*:
Save
Citation
Tags
HERO ID
1179536
Reference Type
Journal Article
Title
Quality changes of Moringa oleifera, variety Mbololo of Kenya, seed oil during frying
Author(s)
Tsaknis, J; Spiliotis, V; Lalas, S; Gergis, V; Dourtoglou, V
Year
1999
Is Peer Reviewed?
1
Journal
Grasas y Aceites
ISSN:
0017-3495
EISSN:
1988-4214
Publisher
INST GRASA SUS DERIVADOS
Location
SEVILLE
Volume
50
Issue
1
Page Numbers
37-48
Language
English
DOI
10.3989/gya.1999.v50.i1.634
Web of Science Id
WOS:000080792900007
Abstract
The frying performance of Moringa oleifera variety Mbololo of Kenya seed oil (produced by cold pressure, extraction with n-hexane and a mixture of chloroform-methanol) was studied especially as regards repeated frying operations. The oils were used for intermittent frying of potato slices and cod filets at a temperature of 175 +/- 5 degrees C for 5 consecutive days. Under such conditions thermal and oxidative decomposition of the oils takes place. The chemical changes occurring in the oils were evaluated. Free fatty acid content, peroxide value, specific extinction at 232 nm, polar compounds, colour and viscosity of the oils all increased, whereas the iodine values, smoke points, polyunsaturated fatty acid content, induction period and tocopherol concentration decreased. The effect of the oils on the organoleptic quality of these fried foods was also determined. The analytical and sensory data showed that the lowest deterioration occurred in cold pressure produced oil and the highest in n-hexane extracted oil.
Keywords
chemical changes; cod; frying; Moringa oleifera seed oil; organoleptic characteristics; potato
Tags
IRIS
•
Methanol (Non-Cancer)
Search 2012
WOS
Home
Learn about HERO
Using HERO
Search HERO
Projects in HERO
Risk Assessment
Transparency & Integrity