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

2019 ◽  
Vol 21 (2) ◽  
pp. 79
Author(s):  
Arif Rahman Hakim ◽  
Wahyu Tri Handoyo ◽  
Toni Dwi Novianto ◽  
Andrianto Widi Prasetyo
Keyword(s):  
Moisture Content ◽  
Chemical Properties ◽  
Expansion Ratio ◽  
Fish Feed ◽  
Screw Speed ◽  
Twin Screw Extruders ◽  
Twin Screw ◽  
Unit Density ◽  
Screw Extruders ◽  
Ratio Unit

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%.

Effect of Moisture Content and Screw Speed on the Physical Chemical Properties of an Extruded Crab-based Snack

2005 ◽  
Vol 11 (2) ◽  
pp. 121-127 ◽  
Author(s):  
V. A. Obatolu ◽  
D. I. Skonberg ◽  
M. E. Camire ◽  
M. P. Dougherty
Keyword(s):  
Moisture Content ◽  
Physical Properties ◽  
Chemical Properties ◽  
Value Added ◽  
Expansion Ratio ◽  
Screw Speed ◽  
Twin Screw ◽  
L Value ◽  
By Products ◽  
Value Added Products

Crab processing generates by-products that could be used in new value-added products to decrease processing waste and increase profits. In this product development study, the effects of moisture content and screw speed on physical properties and composition of an extruded crab-based snack product were investigated. Corn meal was fortified with 10% ground crab leg and passed through a twin-screw extruder using moisture contents of 25% and 30% and screw speeds of 200, 250 and 300rpm for a total of six treatments, extruded in duplicate. Screw speed and moisture content had a significant (p 0.05) influence on moisture content, expansion ratio, crunchiness and L-value of the extrudate while protein, fat, ash and mineral were not significantly (p 0.05) affected. As screw speed increased, moisture content and bulk density of the extrudates decreased. The snack product extruded at 25% moisture content and 300rpm had significantly different (p 0.05) physical properties compared to all other treatments. Increases in torque and melting temperature were observed for higher screw speed and lower extruding moisture content.

scholarly journals Desain dan Kinerja Mesin Ekstruder Twin Screw untuk Pembuatan Pakan Ikan Terapung

2020 ◽  
Vol 7 (2) ◽  
pp. 129-136
Author(s):  
Arif Rahman Hakim ◽  
Wahyu Tri Handoyo ◽  
Ahmat Fauzi ◽  
Widiarto Sarwono
Keyword(s):  
Mechanical Energy ◽  
Extrusion Process ◽  
Fish Feed ◽  
Screw Speed ◽  
Power Requirement ◽  
Single Screw ◽  
Twin Screw ◽  
Specific Mechanical Energy ◽  
Unit Density ◽  
Screw Extruders

AbstractProduction of floating fish feed independently by fish farmer group currently constrained with types of extruders available. Single screw extruders used fail to produce floating fish feed. It caused by the extrusion process is not optimal due to either temperature or improper screw speed. An alternative solution is using extruder twin screw with temperature and screw speed can be controlled. The objective of the study is developing and assessing of twin screw extruder performance in producing floating fish feed. Principle work of extruders is conveying and mixing feed stuff to the dies under high temperature and pressure. The main component of extruder consists of a motor drive, screw, barrel, heater, dies, and cutter. Evaluation of extruder performance involve temperature, screw speed, engine power, and quality of feed produced that are floatability and unit density. The result of design and assessment are obtained prototype of twin screw extruders which have capacity 10,93 kg/h, stability temperature and screw speed, the power requirement is 5,17 kW, specific mechanical energy 136,11 kj.kg-1. Produced fish feed have floatability 96% and unit density 0,620 (mg/mm3). Abstrak Pembuatan pakan ikan terapung secara mandiri oleh kelompok pembudidaya saat ini terkendala jenis ekstruder yang tersedia. Ekstruder single screw yang digunakan belum bisa menghasilkan pakan ikan terapung. Karena proses ekstrusi yang tidak optimal baik disebabkan suhu maupun putaran screw yang tidak tepat. Sebagai alternatif ialah dengan menggunakan ekstruder twin screw dengan suhu dan putaran yang bisa dikontrol. Tujuan penelitian ini adalah untuk mengembangkan dan menguji kinerja ekstruder twin screw dalam memproduksi pakan ikan terapung. Prinsip kerja dari ekstruder adalah mendorong dan mengaduk bahan pakan menuju dies dalam kondisi tekanan dan panas yang tinggi. Komponen utama ekstruder terdiri dari motor penggerak, twin screw, barrel, element pemanas, dies dan pemotong. Pengujian kinerja meliputi suhu, kecepatan screw, daya mesin serta kualitas pakan yang dihasilkan berupa daya apung dan unit density. Hasil desain dan pengujian diperoleh mesin ekstruder dengan kapasitas 10,93 kg/jam, suhu dan putaran screw stabil saat dioperasikan, kebutuhan daya sebesar 5,17 kW, specific mechanical energy 136,11 kj.kg-1. Pakan ikan yang dihasilkan memiliki daya apung 96 % dan unit density 0,620 (mg/mm3).

scholarly journals Inclusion of Spirulina in Floating Fish Feed Production: Protein and Physical Quality

2021 ◽  
Vol 21 (4) ◽  
pp. 161-167
Author(s):  
Arif Rahman Hakim ◽  
Putri Wullandari ◽  
Naila Zulfia ◽  
Tri Nugroho Widianto ◽  
Bakti Berlyanto Sedayu
Keyword(s):  
Physical Properties ◽  
Protein Content ◽  
Control Diet ◽  
Expansion Ratio ◽  
Fish Feed ◽  
Feed Production ◽  
Single Protein ◽  
Unit Density ◽  
Pellet Formulation ◽  
Ratio Unit

The objective of this study was to investigate effects of Spirulina meal (SM) inclusion in fish feed formulations on their physical and protein content. Four formulations of fish feed were carried out i.e. a control diet with fishmeal (FM) as the single protein source and three others formulations containing Spirulina meal (SM) ingredient in different ratios of FM: SM (w/w) namely 75:25; 50:50 and 25:75 (w/w). All the formulations were processed into pellets using an extruder with a 600 rpm screw speed, 100 °C barrel temperature, and 3 mm diameter of dies. The dried pellets were then evaluated with respect to the protein content and physical properties i.e. expansion ratio, unit density, floatability and hardness. In general, the most optimum pellet formulation was found at the ratio of 25:75 (FM: SM) ingredients resulted in pellet with higher protein (38.89%) and expand ratio (1.65 fold), the lowest unit density (0.473 mg/mm3), the highest floatability (100%) and less hardness (32.53 N). Therefore, formulation of floating fish feed included with Spirulina are an option for improving its protein content and physical properties.

scholarly journals Physico-chemical properties of extruded aquafeed pellets containing black soldier fly (Hermetia illucens) larvae and adult cricket (Acheta domesticus) meals

2018 ◽  
Vol 4 (1) ◽  
pp. 19-30 ◽  
Author(s):  
F.G. Irungu ◽  
C.M. Mutungi ◽  
A.K. Faraj ◽  
H. Affognon ◽  
N. Kibet ◽  
...  
Keyword(s):  
Moisture Content ◽  
Water Absorption ◽  
Bulk Density ◽  
Water Solubility ◽  
Chemical Properties ◽  
Expansion Ratio ◽  
Acheta Domesticus ◽  
Fish Feed ◽  
Black Soldier Fly ◽  
Physico Chemical

Fish farming is faced with the challenge of high cost of feeds because of the cost of high quality protein needed for formulation of the feeds. Thus, there is urgent need for alternative protein sources. The effects of substituting freshwater shrimp meal (FWSM) with black soldier fly larvae meal (BSFM) or adult cricket meal (ACM) on physico-chemical properties of hot-extruded fish feed pellets were investigated. The FWSM protein in a 26 g/100 g protein fish feed formulation was substituted at 0, 25, 50 and 75%, and moisture content of the formulated blends adjusted to 10, 20 or 30 g/100 g prior to extrusion. Floatability, expansion rate, bulk density, durability index, water absorption index, water solubility index, and water stability of extruded pellets were determined. Sinking velocity and the total suspended and dissolved solids in water were determined for the optimal pellets. Pellet floatability was not influenced by the type of insect meal but the interaction between level of inclusion and moisture content of the feed at extrusion. Pellets with high floatability >90% were produced from all feed blends at 30 g/100 g moisture content. Expansion ratio, was not influenced by type of insect meal or the level of inclusion but by the moisture content whereby feed blends extruded at 30 g/100 g moisture gave pellets with high expansion ratio ~60%. Bulk density was influenced by the interaction of the three factors. Pellet durability and water absorption indices were not influenced by the investigated factors or their interactions. Processed pellets were generally highly durable (99%) out of water, but the stability in water was significantly influenced by the interaction of type of insect meal level of inclusion and moisture content at extrusion. Water solubility increased with increasing extrusion moisture. Overall, it was possible to process good quality extruded pellets with 75% BSFM or 75% ACM at 30 g/100 g feed moisture.

Investigation of process temperature and screw speed on properties of a pharmaceutical solid dispersion using corotating and counter-rotating twin-screw extruders

2013 ◽  
Vol 66 (2) ◽  
pp. 204-217 ◽  
Author(s):  
Justin M. Keen ◽  
Charlie Martin ◽  
Augie Machado ◽  
Harpreet Sandhu ◽  
James W. McGinity ◽  
...  
Keyword(s):  
Solid Dispersion ◽  
Process Temperature ◽  
Screw Speed ◽  
Twin Screw Extruders ◽  
Twin Screw ◽  
Screw Extruders
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