Evaluasi Efektivitas Metode Kristalisasi Suhu Rendah dan Kristalisasi Urea dalam Pembuatan Konsentrat Omega-3 Ikan Tuna (Thunnus sp.)
Date
2023-08Author
Marhamah, Aulia Shofia Rahmatu
Suseno, Sugeng Heri
Ramadhan, Wahyu
Metadata
Show full item recordAbstract
Minyak ikan berpotensi dikembangkan menjadi konsentrat omega-3 dengan
menghilangkan komponen selain omega-3 yang kurang baik bagi kesehatan.
Penelitian bertujuan mengevaluasi metode kristalisasi suhu rendah dan kristalisasi
urea melalui parameter bilangan iod dan peningkatan total asam lemak omega-3
dalam pembuatan konsentrat omega-3 ikan tuna. Pembuatan konsentrat omega-3
dilakukan dengan metode kristalisasi suhu rendah dengan perlakuan perbedaan
kondisi sampel minyak ikan berupa minyak murni trigliserida dan minyak murni
etil ester serta metode kristalisasi urea dengan perlakuan perbedaan rasio urea :
asam lemak (v/b). Metode kristalisasi urea menghasilkan kualitas konsentrat
omega-3 yang lebih baik dibandingkan metode kristalisasi suhu rendah. Rasio urea
: asam lemak 2:1 mampu meningkatkan proporsi unsaturated fatty acid terhadap
saturated fatty acid konsentrat omega-3 sebesar 25,17:1 dan memiliki nilai bilangan
iod sebesar 495,89±70,45 g/100g serta mengalami peningkatan total asam lemak
omega-3 sebesar 316,34% atau setara dengan 4,16 kali lebih tinggi dari minyak
kasar. Fish oil has the potential to be developed into omega-3 concentrate by
eliminating components other than omega-3 that were less beneficial for health. The
research aimed to evaluate low-temperature crystallization methods and urea
complexation through the iodine number parameter and the increase in total omega-
3 fatty acids in the production of tuna fish omega-3 concentrate. The production of
omega-3 concentrate was carried out using the low-temperature crystallization
method with different treatments of fish oil samples, including pure triglyceride oil
and pure ethyl ester oil, as well as the urea crystallization method with varying ureato-
fatty-acid ratios (v/w). The urea crystallization method resulted in better quality
omega-3 concentrate than the low-temperature crystallization method. The ratio of
urea: fatty acids 2:1 was able to increase the proportion of unsaturated fatty acids
to saturated fatty acid concentrate omega-3 by 25.17:1 and had an iodine number
value of 495.89 ± 70.45 g/100g and experienced an increase in total omega-3 fatty
acids by 316.34% or equivalent to 4.16 times higher than crude oil.