Open AccessTotal gossypol and oxidation levels of refined cottonseeds oils and crude peanut oils produced in Burkina Faso
Author(s) -
Souleymane Zio,
Bakary TARNAGDA,
Zongo Oumarou,
A. Boro,
D. Elothmani,
Dominique Le Meurlay,
Vanessa Lancon Verdier,
Aly Savadogo
Publication year - 2021
Publication title -
food research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.218
H-Index - 7
ISSN - 2550-2166
DOI - 10.26656/fr.2017.5(6).357
Subject(s) - gossypol , food science , peroxide value , chemistry , peanut oil , raw material , organic chemistry , biochemistry
Edible oils produced and consumed in Burkina Faso often do not meet establishedstandards. The objective of this study was to evaluate the total gossypol level of refinedcottonseeds oils and the oxidation state of crude peanut oils and refined cottonseeds oils inBurkina Faso to determine the impact on consumer health. A total of 61 samples includingcrude peanut oils and refined cottonseeds oils were collected in Ouagadougou, BoboDioulasso and surrounding areas. Total Gossypol and p-Anisidine value were determinedby spectrophotometry. Peroxide value, acid value, soap residual value and mineral oilswere determined by chemical methods. Total oxidation (Totox) value was determined bymathematical prediction. Overall, Gossypol total average of cottonseeds oils analyzed inthis study was 0.032%. The p-Anisidine value average was 1.80 for refined cottonseedsoils and 11.65 for crude peanut oils. The Totox averages were respectively 19.37 and28.36 for refined cottonseeds and crude peanut oils. The average peroxide values forrefined cottonseeds oils and peanut crude oils were 8.52 and 8.33 mEq O2/Kg,respectively (p<0.05). The average acid values were 0.27 and 1.95 mg KOH/g for refinedcottonseeds oils and crude peanut oils, respectively (p<0.05). None of the oils showed anymineral oil trace. The average residual soap values were respectively 1.47 and 8.32 ppmfor peanut oils and cottonseeds oils (p<0.05). The majority values determined conformedto the Codex Alimentarius standard despite some cases of non-compliance. It is essentialto improve the processes of oils production and conservation in order to have quality oilsto guarantee the health of the consumer.