Effects of Twin-Screw Extruders Condition to Physical Properties of Floating Fish Feed

Abstract

Process production of floating fish feed in a society constrained by processing technology. The objective of this study was to observe effect of condition process of twin screw extruders to the physical and chemical properties of produced of floating fish feed. Ingredients used involve fish meal, soybean meal, corn meal, and tapioca flour. The ingredients are mixed with 15, 20 and 25% water added to the total weight. Extrusion process condition conducted by several treatments i.e screw speed (540, 540, 600, 660 rpm) and barrel temperatures (80, 90, 100, 110, 120℃). In order to study, expansion ratio, unit density, floatability and hardness of feed were observed as physical parameters while chemical properties include moisture and protein content. Experimental result showed that addition 25 % water to the formula gives a good performance of expansion ratio, unit density and floatability than 15% and 20% moisture content. Higher of screw speed produces feed with higher ratio expansion, lower unit density, and higher floatability. The optimum of screw speed is 600 rpm. Meanwhile increasing of barrel temperature caused reduction of unit density, and escalation floatability of feed. Best barrel temperature to meet the physical properties is 120℃. The produced feed contain protein 32.38-41.95% and moisture content 4.37-5.70%.

Teknologi Pembuatan Pellet Unggas Dan Ikan Berbasis Maggot BSF Menggunakan Mesin Cetak Vertikal Rotary Twin Roller Shaft

“…Tipe mesin pencetak model twin roller shaft die, mampu menghasilkan pellet dengan tingkat kepadatan yang baik, bahan baku akan tergilas sehingga lebih halus dan pencampuran lebih homogen (Hakim et al, 2019) (Hakim et al, 2019). Penggunaan mesin pencetak akan menghasilkan karakteristik pellet yang berbeda, tingkat kepadatan dan homogenitas dengan mesin twin disc memenuhi standar pellet ikan dan ungags (Keysuke Muramatsu et al, 2015).…”

Aplikasi Teknologi Floating Catfish Pellet Sebagai Solusi Pemanfaatan Larva Black Soldier Fly di Mitra Usaha Mazgot BSF Boyolali

“…Produksi pakan ikan tipe terapung relatif jarang dilakukan oleh kelompok pembudidaya ikan karena terdapat berbagai hambatan diantaranya faktor teknis dalam produksi pakan tersebut seperti karakteristik bahan baku yang tersedia dengan alat pencetak yang dimiliki (Rasidi & Haryadi, 2016). Hakim et al (2019) menyampaikan bahwa proses produksi pakan ikan terapung masih jarang dikerjakan terutama menggunakan bahan baku pakan lokal dan mesin pencetak (ekstruder), sehingga diperlukan pengaturan proses produksi yang sesuai dengan kondisi para pembudidaya ikan untuk memproduksi pakan tipe terapung. Oleh karena itu, aplikasi pembuatan pakan apung berbasis bahan pakan lokal seperti larva BSF dapat menjadi solusi bagi pembudidaya lalat BSF dan membuka peluang untuk memenuhi kebutuhan pakan ikan.…”

Water Stability Characteristic of Nile Tilapia (Oreochromis niloticus) Feed Coated with Tapioca Flour-beeswax-based Edible Coating

“…In general, manufacturing floating pellets requires a complex process, especially during gelatinization. (Hakim, Handoyo, Novianto, & Prasetyo, 2019). Instead of mixing a binder agent to increase the water resistance of fish feed, another simple method is to coat the fish feed with a hydrophobic edible coating.…”