Abstract
The quality of extra virgin olive oil is affected by the type of packing materials and storage conditions such as temperature, exposure to light, oxygen, humidity and storage period. Therefore, this study aims to evaluate the quality indicators of extra virgin olive oil packed in different packages, which are transparent polyethylene (plastic) packages, opaque polyethylene (plastic) packages, opaque glass, metal which were exposed to light and not exposed to light for a preservation period of up to 180 days under normal storage conditions used in home storage from February to August 2021. Some physical properties moisture content , refractive index, specific gravity, and chemical tests acidity number,and peroxide number. during periods of time that included (comparison sample, at 60 days , at 120 days, at 180 days) and the results were analyzed statistically using two-way anova analysis of variance to evaluate significant differences at a significant level (p<0.05). The results showed that the physical properties of the extra virgin olive oil packed in different packages and preserved in the usual storage conditions were within the standard limits of the international and Libyan specifications for the extra virgin olive oil. On the other hand, the results of the chemical tests showed that there is a gradual increase in the acidity number and the peroxide number during the storage period.On the other hand, the results of the chemical tests showed that the acidity number estimated in grams for a sample compared to 1.79g /100g, while the values of the acidity number for olive oil samples ranged between 2.26 – 2.73 and these values are within the limits of virgin olive oil.Thue results also indicated that the highest values of the peroxide number were 25.66 mequivalent o2/kg in the oil sample that was exposed to light and packed in transpar ent glass containers. The results conclud that the best used containers are opaaque glss, followed by opaque
plastic packaging, so it is preferable to replacethe plastic coitainers commonly used in filling olive oil with opaque glass containers.
Identification of natural products in Pimpinella armena L. in Sulaymaniyah - northern Iraq by GC-MASS
Wijdan Saadi Aziz… Dept. of Biology, College of Education for pure science, Tikrit University, Tikrit, Iraq
