ZEYTİNYAĞINDA MİNİMAL RAFİNASYON UYGULAMASININ İŞLEM PERFORMANSI VE KALİTE KRİTERLERİ AÇISINDAN DEĞERLENDİRİLMESİ.

In this study, lampante olive oil was subjected to acidification treatment with alkalis with different strengths namely, sodium hydroxide (NaOH), magnesium oxide (MgO) and calcium hydroxide (Ca(OH)2) and bleached with natural and acid-activated bleaching earths at variable ratios (0.1% - 0.5% - 0.9%). A decrease in the amount of FFA effectively achieved with NaOH and MgO and the refining loss is lower than Ca(OH)2. Initial TOTOX value of 152.02, decreased to 47.82 and 56.9, respectively, after the de-acidification processes performed with NaOH and MgO, but remained at the level of Ca(OH)2 and 123.53. Among the neutralized samples, the highest phenolic component content was found in the NaOH sample with 175.3 mg/kg. The use of natural bleaching soils in bleaching processes does not provide significant protection in terms of bioactive components, but when used at increasing rates, it gives more effective results than acid activated soils in terms of processing efficiency. [ABSTRACT FROM AUTHOR]