Pengaruh Waktu Pre-Slaughtering terhadap Kemunduran Mutu Ikan Nila (Oreochromis niloticus) Pasca Transportasi Kering

Abstract

Ikan merupakan organisme yang mudah mengalami kemunduran mutu dan laju kemunduran mutunya dipengaruhi oleh proses transportasi dan cara kematian. Penelitian ini bertujuan untuk menentukan waktu pre-slaughtering terbaik yang mampu mempertahankan mutu ikan setelah dimatikan. Metode penelitian dilakukan dengan pemingsanan, pembekuan dan pembugaran ikan. Hasil uji organoleptik kemunduran mutu ikan nila menunjukkan bahwa perlakuan pre- slaughtering time 0 menit memiliki hasil yang paling baik daripada perlakuan lainnya pada setiap parameternya. Pengujian pH menunjukkan perlakuan waktu pre-slaughtering 240 menit memiliki nilai rata-rata paling rendah dibandingkan dengan perlakuan lainnya. Pengujian TVB nilai rata-rata kemunduran mutu paling baik ditunjukkan oleh perlakuan waktu pre-slaughtering 0 menit. Pengujian WHC nilai rata-rata terbaik ditunjukkan oleh perlakuan waktu pre-slaughtering 0 menit. Pengujian drip loss nilai rata-rata terbaik pada perlakuan waktu pre-slaughtering 0 menit. Perbedaan nilai antara perlakuan ini disebabkan oleh perbedaan cara kematian ikan dimana perlakuan waktu pre-slaughtering 0 menit ikan masih dalam kondisi yang pingsan, sedangkan perlakuan lainnya kondisi ikan sudah dalam kondisi yang bugar.

Fish is a highly perishable species and the deterioration rate is affected by transportasi and slaughtering method. This study aims to determine the best pre- slaughtering time that can maintain the quality of fish after being killed. The research method was carried out by stunning, freezing and refreshing the fish. The results of the organoleptic test of the decline in the quality of tilapia showed that the 0-minute pre-slaughtering time treatment had the best results compared to other treatments in each parameter. The pH test showed that the 240-minute pre- slaughtering time treatment had the lowest average value compared to other treatments. The TVB test showed the best average value of quality decline was shown by the 0-minute pre-slaughtering time treatment. The best average value of WHC test was shown by the 0-minute pre-slaughtering time treatment. The best average value of drip loss test was in the 0-minute pre-slaughtering time treatment. The difference in values between these treatments is caused by the difference in the way the fish die, where in the 0-minute pre-slaughtering time treatment the fish are still in a fainted condition, while in the other treatments the fish are already in a fit condition.