Pengolahan dan pemanfaatan limbah sisik ikan kakap (Lutjanus sp.) menjadi gelatin dengan metode hidrolisis

Rezeki, Sri and Cahyasani, Rensi Dwi (2015) Pengolahan dan pemanfaatan limbah sisik ikan kakap (Lutjanus sp.) menjadi gelatin dengan metode hidrolisis. Diploma thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Tujuan penelitian ini adalah Mengetahui pengaruh lama waktu perendaman dan perbedaan metode hidrolisis terhadap karakteristik fisik dan kimia dari gelatin sisik ikan kakap (Lutjanus sp.) Membandingkan hasil yang diperoleh dengan SNI dan GMIA gelatin yang meliputi kadar air, kadar abu, rendemen, pH, viskositas dan organoleptik. Pada tahap pembuatan produk, yakni proses degresing, yaitu proses penghilangan lemak dengan cara merendam sisik ikan kakap ke dalam air mendidih pda suhu 100 oC selama 30 menit. Kemudian dilanjutkan tahap kedua yaitu demineralisasi dengan cara merendam dalam larutan HCl 5% selama 1 hari, 3 hari, 5 hari. Kemudian memisahkan ossein dengan larutan HCl 5 % dengan cara disaring. Setelah itu ossein di rendam dalam air bersuhu 80 oC selama 4 jam, sambil diaduk dengan kecepatan 300 rpm. Dalam pemanasan ini terbentuk larutan gelatin. dalam oven selama pada suhu 50 oC selama 24 jam. viskositas dilakukan Dari hasil percobaan yang kami lakukan diperoleh hasil yg paling optimal pada konsentrasi HCl 5% dengan lama perendaman 5 hari menghasilkan rendemen, pH, kadar air, viskositas, dan kadar abu sebesar 0,241%;6,46;0,241%;3,49 cp;dan 1,656%. ========================================================================================================== The purpose of this researche is to know influence of long time hydrolysis and difference hydrolysis method to physic and chemistry caracteristic from sneppel fish (Lutjanus sp.) gelatin. To compare the result with SNI and GMIA such as humidity, yield, ash, ph, organoleptic and viscosity. Degreassing process is done by to wash scales of fish with pour thwe scales of fish ,is fat removal processing with to immerse fish scales in boiling water at temperature 100 degrees celcius during 30 minutes. And then, it is continued to second step that demineralization with to immerse in HCL solvent 5% during 1 day, 3 days, and 5 days. The scales of fish that is immersed in HCL solvent 5% will result ossein. Then, to separate ossein with HCL solvent 5% is filtering. After that, wash the ossein with water. Then the ossein is immersed to water at temperature 80 degrees celcius during 4 hours, while is stirred with speed 300 rpm.. Then the gelatine which have shape sold (gel) is dried in oven at temperature 50 degrees celcius during 24 hours. From the result of this research is getting optimal result at concentration HCl 5% with long time hydrolysis 5 days to result yield 0,241%,, pH 6,46, humidity 0,241%, viscosity 3,49 cp, and ash1,656%.

Item Type: Thesis (Diploma)
Additional Information: RSK 628.3 Sri p
Uncontrolled Keywords: Hidrolisis; Gelatin; Lutjanus sp.; HCl; pH
Subjects: T Technology > TD Environmental technology. Sanitary engineering > TD767.7 Sewage sludge treatment and disposal
Divisions: Faculty of Industrial Technology > Chemical Engineering > (D3) Diploma
Depositing User: - Taufiq Rahmanu
Date Deposited: 01 Jul 2019 08:08
Last Modified: 01 Jul 2019 08:08
URI: http://repository.its.ac.id/id/eprint/63378

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