Judul: Pembuatan kecap ikan secara hidrolisis kimia dari daging merah Ikan Tuna (Thunnus albacares)
Abstrak: Umumnya ikan tuna ditangani dan dimanfaatkan dalam bentuk segar atau diproses menjadi loin tuna beku dan tuna kaleng. Selama proses pengolahan loin tuna beku akan dihasilkan sejumlah limbah, diantaranya daging merah ikan tuna. Daging merah ikan tuna ini sebenarnya masih dapat dimanfaatkan, salah satunya menjadi kecap ikan. secara Kecap ikan dapat dibuat dengan cepat, yaitu hidrolisis asam dengan menggunakan HCl 6 N pada suhu 80 85° C selama 18 jam. Untuk meningkatkan nilai organoleptiknya, maka dapat digunakan karamel. Penelitian ini bertujuan untuk memanfaatkan limbah berupa daging merah hasil pengolahan loin tuna beku menjadi produk yang memiliki nilai ekonomis dalam waktu yang lebih singkat. Selain itu juga untuk mendapatkan kecap ikan yang berprotein tinggi dengan cara mengetahui pengaruh perbandingan ikan dengan HCl yang digunakan serta mengetahui pengaruh penambahan karamel terhadap mutu kecap ikan yang dihasilkan terutama nilai leptiknya. Perbandingan ikan dengan HCl yang adalah 2: 1 (A1), 1:1 (A2), 12 (A3). organo- dicobakan Sedangkan ...
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Judul: Pembuatan kecap ikan secara hidrolisis kimia dari daging merah ikan tuna (thunnus albacares)
Abstrak: Dark muscle in Thunnus albacares in considered as waste from loin tuna and canned tuna processing. This waste still actually can be utilized as fish sauce which has economical value. The objectives of this research was to study the fish sauce processing by using acid hydrolisis with dark muscle tuna as raw material. Research was conducted in two steps, where the first step done in order to learn the influence fish and HCI ratio toward the quality of fish sauce especially for protein content.
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Judul: A Continuous Vaccination Strategy in the SVIR Epidemic Model
Abstrak: Vaccination is conducted to minimize the spread of a disease. The vaccination is usually done several times within a fixed time interval. In the SVIR model, it is assumed that individuals do not get immediate immunity following a vaccination program. So according to process of vaccination on SVIR model, there are two strategies, i.e. the continuous vaccination strategy (CVS) and the pulse vaccination strategy (PVS). In this study, only the CVS strategy in epidemic model SVIR is considered. Results of the study indicate that dynamics of the CVS system depends on the basic reproductive number. If the basic reproductive number is less than one, then the disease-free fixed point is asymptotically stable. It means that the disease will eventually disappear from the population. Conversely, if the basic reproductive number is greater than one, then the endemic fixed point is asymptotically stable, which means that the disease will remain exist in the population. Simulation result shows that the vaccination would minimize the spread of disease by reducing the basic reproductive number. If the time for the vaccinated recipients to obtain the immunity, as well as a possibility of vaccinated recipients to be infected are neglected, then the disease will be eradicated. This condition is called an over-evaluating effect of vaccination.
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