Keyword: DOBI, bleachability, crude palm oil

The Deterioration of Bleachability Index (DOBI) is a ratio of the uncorrected absorbance values at 446 nm to that of at 269 nm. It is an indication of the bleachability of the crude palm oil based on the amount of carotenes still present in the crude oil and the amount of secondary oxidation products. A good easily bleached crude palm oil will have a DOBI of 4, while average quality crude will exhibit a DOBI of 2.5 to 3.