CHARACTERISTICS OF CATFISH STOMACH OIL (Clarias gariepinus) REFINED WITH BENTONITE AND ACTIVE CHARCOAL

Abstract

ABSTRACT
Waste or by-product of catfish (Clarias gariepinus) which is rarely used is stomach.
The contents of catfish stomatch is extracted with dry rendering method will produce crude
fish oil. Fish oil obtained as a by-product of smoked fish processing often contains a lot of
impurities, so a purification process is needed using bentonite adsorbents and activated
charcoal. This study aims to determine the effect of using bentonite adsorbents and
activated charcoal with different concentrations on the characteristics of catfish entrails oil.
The method used in this study was an experimental method using a completely randomized
design with 3 treatment levels namely bentonite 3%, activated charcoal 7%, and bentonite:
activated charcoal (3%:7%). It was repeated 3 times, so that the number of experimental
units was 9 units. The parameters analyzed were color, odor, and peroxide value. The
results showed that bentonite and activated charcoal adsorbents had a very significant
effect on the characteristics of catfish entrails oil. The addition of 3% bentonite : 7%
activated charcoal produced a better color and smell of fish oil compared to other
treatments. The peroxide value of crude fish oil is 5,18 meq/kg, the peroxide value can be
reduced by adding different adsorbents, namely A1(3% bentonite), A2(7% activated
charcoal), and A3(3% bentonite: 7% activated charcoal). obtained successive results of
1.693 meq/kg, 1,62 meq/kg, and 0,776 meq/kg.
Keywords:Clarias gariepinus, purification, bentonite, activated charcoal, fish oil
1)Student at Faculty of Fisheries and Marine Science, Universitas Riau
2)Lecturer atFaculty of Fisheries and Marine Science,UniversitasRiau