Applied Industrial Technology التكنولوجيا التطبيقية والصناعية
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Browsing Applied Industrial Technology التكنولوجيا التطبيقية والصناعية by Author "Ahmad "Mhammad Ali" Qrinawi"
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- ItemEffect of Olive Fruit Fly (Bactrocera oleae (Rossi)) on Selected Quality Indicators of Virgin Olive Oil from Palestine(Al-Quds University, 2023-05-20) Ahmad "Mhammad Ali" Qrinawi; أحمد قريناويThis study's objective is to assess how olive fruit flies' infestation affects various olive oil quality indicators, including antioxidant activity, total phenolic and flavonoid content, Acidity peroxide value, K232, and K270. Olive fruit flies' punctures on the fruits that had an active infestation could be seen. In comparison to healthy oil samples (from olive fruits not attacked by the fly), the study's findings showed an increase in the acidity , peroxide, and K values (K232 and K270) of olive oil from samples of olive fruits. This suggests that an olive fly infestation has caused a decrease in the quality of olive oil. This is explained by the accelerated oxidation and hydrolytic degradation, which are encouraged by having exit holes that allow oxygen and microorganisms to affect the olive pulp. The results also revealed that the total phenolic and flavonoid contents of olive oils made from unhealthy olive fruits were lower than those made from healthy fruits, which further suggests that the oil is of lower quality. These polyphenolic compounds act as antioxidants and are crucial to the stability and shelf life of olive oil. Similar to this, a decline in the antioxidant activities of olive oils from unhealthy fruits (reflected by FRAP and DPPH assays) also indicated a decline in the olive oil's quality. This suggests that, in the event of an olive fly attack, the category of olive oil may change. For example, oil from unhealthy fruits may be downgraded from extra version to version olive oil.