Crude palm oil refining should pay attention to a value which is called DOBI, DOBI value as a quality parameter to evaluate the capacity of
palm oil refining. If DOBI > 3, refining capacity is excellent; , and the capacity is medium when DOBI 2.4 ~ 2.4 ; When DOBI < 2.3, refining capacity is poor. DOBI value refers to the 446 nm to 269 nm absorption peak ratio. If the DOBI < 2, you need to consume more than 2.5% of the clay.
