On (7/2023) , (Ziad Ibrahim Ayyad) published a new study in (Journal of Medicinal and Chemical Sciences) titled (Effects of Different Filtration and Clarification Techniques on Palestinian Virgin Olive Oil Chemical and Microbial Quality).
The articleaimed to (the current study aimed to investigate the effects of innovative filtration techniques on the quality of Palestinian olive oil). The results of this study demonstrated that (This study showed that clarification and filtration treatments might have be beneficial effects in filtered VOO compared to UF VOO in terms of reducing the precipitate, decreasing microbial count, preserving the chemical quality of VOO. Hydrolytic degradation and evaluated by FA levels were more obvious in UF VOO than those in filtered and clarified VOO at the end of the storage (6 months).
For total polar phenol measured at the end of the 6-month storage, no significant difference was observed between all VOO samples. Similar trend was observed for the peroxide values, where no significant difference was also observed for all stored VOO samples after 6-month storage. It should be noted that the lowest peroxide value was found in the VOO clarified with argon gas. As far as K232 and K270 results are concerned, the lowest values measured were those for VOO samples clarified with CO2.
Nevertheless, no significant difference was observed in the K270 values measure in clarified and filtered samples after 6-month storage. It was evident that filtration is mostly necessary as a final step to eliminate moisture or suspended solids and to increase the brilliance of olive oil for consumer admission. Moreover, the VOO clarification resulted in eliminating most of Yeasts and Molds. Moreover, clarification and filtration might enhance the VOO quality during storage as well. In addition, clarification seemed to be a good treatment to avoid potential interaction between VOO and filter aid. Generally speaking, and upon inspecting all quality indices, storage under dark conditions was better and yielded better quality of VOO compared to what was observed in the oil samples stored in day light.).
For more information about the study, please contact the main author at (This email address is being protected from spambots. You need JavaScript enabled to view it.)
