THE ACIDITY INDEX EVOLUTION OF MAIZE AND SUNFLOWER CRUDE OILS UNDER STORAGE CONDITIONS
In this work it has searched, comparatively, the evolution of the acidity index of some maize and sunflower crude (unrefined) oil samples stored under certain conditions of temperature and light, during 60 days. The material for experiment was represented by crude oil, whose acidity index has been d...
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| Format: | Article |
| Language: | English |
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"Alexandru Ioan Cuza" University of Iași
2013-12-01
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| Series: | Analele Ştiinţifice Ale Universităţii Alexandru Ioan Cuza din Iași,Sectiunea II A : Genetica si Biologie Moleculara |
| Online Access: | http://www.gbm.bio.uaic.ro/index.php/gbm/article/view/1093 |
| Summary: | In this work it has searched, comparatively, the evolution of the acidity index of some maize and sunflower
crude (unrefined) oil samples stored under certain conditions of temperature and light, during 60 days. The material for
experiment was represented by crude oil, whose acidity index has been determined at once after obtaining, as well as at 5,
30 and 60 days of keeping at 4oC (in dark and light) and at +20oC (in dark and light). The storage of maize and sunflower
crude oils at +4oC and +20C, in dark and and light has led, comparatively with fresh samples, to increase of the acidity
index after 30, and especially after 60 days. The highest values of this index have been registered after 60 days of
keeeping at +20C. During storage at the two thermic thresholds, the lighting regime has not influenced the acidity index
value in the both analysed oils. Comparing the evolution of the acidity index of the two crude oil types, one can say that
after 5 days of storage at +20C the values of this index have risen more in maize oil, as compared to sunflower one.
After 30 days the rises have been wery close in the both oil types, but after 60 days the acidity index values have
registered rises much bigger in sunflower oil. |
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| ISSN: | 1582-3571 2248-3276 |