The effects of processing aids and techniques on olive oil extractability and oil quality indices

This study was conducted to investigate the effects of processing aids and techniques such as talcum powder (2% w/w), calcium carbonate (2% w/w), warm water dipping (45 degrees C), combined treatment (warm water dipping+2% calcium carbonate) and control (without adding processing aid) on extractability and quality of 'Tarom 7' olive oil as randomized complete block design with three rep-licates. The results showed that there were no significant differences in the carotenoid content, K232, fatty acid profile or the Cox's value in the oil obtained from untreated and treated fruits with processing aids. The highest chlorophyll content (0.84 mg/kg), total phenolic content (236.94 mg/kg), paste extractability (8.5%) and the lowest peroxide values (0.32 meqO2/kg), K270 (0.38) were obtained from the oil extracted with 2% talc powder. According to the results, it can be suggested that the 2% talc powder treatment could have a positive effect on olive oil quality and paste extractability.