“Maize is an important staple food for about 1.2 billion people around the world. Africa uses 95% of its maize production as food.”
There is a wide variety of snacks available, e.g., curls, puffs, straw snacks etc. Most used raw material is maize, but other raw materials can also be used.
“The global extruded snacks market is estimated to account for USD 48.3 billion in 2019 and is projected to reach USD 65.2 billion by 2026, at a growth rate of 4.4% per year”
“Instant porridge is mainly used as a pre-cooked breakfast. It is made by using maize, sorghum, cassava or wheat as a raw material.”
“Production of a portion of plant-based ‘meat’ uses 95% less land and 74% less water, and it emits about 87% less greenhouse gasses than using beef.”
Aquaculture is a vast growing industry. The diets of farmed fish are specially designed to meet their nutritional needs and is unique to each species of fish. It contains all the necessary nutrients to keep them healthy and growing. It is extruded and are in the form of dried pellets. Maize, wheat, bran and rice is only a few of the raw materials used to extrude aqua feed.
There are 4 main aquafeed categories:
- Floating feed
- Slow-sinking feed
- Sinking feed
- Abalone feed
“The global aquaculture market size is expected to reach a value of up to USD 274.8 billion by 2025.”
Pet food are specifically designed for the pet it is intended for, e.g. cats, dogs etc. Also, the recipes are developed for the size and age of the pets. By using twin screw extruders, the ingredients are fully cooked to ensure the pet’s digestive system will absorb the needed nutrients.
“Twin-screw extruders enable you to consistently produce optimal quality, highly digestible and nutritional foods and feeds.”
Extrusion is used to produce granular snail bait pellets. It is developed to be placed around walkways and gardens to control snails. Metaldehyde is the active ingredient used in most snail baits. The active ingredients are mixed with milled maize or other starch-based products and a few other ingredients. It is then extruded into pellets, dried in a cooler and then packaged.
Chicken waste from hatcheries, mortalities at growing farms and abattoir chicken waste are sources of protein that are often discarded at cost. Extrusion provides a solution whereby the waste in combination with starch cereals are extruded to produce protein enriched animal feed base products. The final formulation of the feed is then developed around the base’s nutritional values.
The starch-waste mixture is extruded at 140 to 160 °C which ensures that all organisms or pathogens are destroyed. The extruded pellets are then dried in a dryer and cooled down before it is bagged. The final product is stable with low water activity and can be stored for up to a year.
Extrusion in the animal feed manufacturing process offers versatility and a wide range of applications. It’s primarily used to prepare food for animals such as cattle, swine, and poultry.
The goal of animal feed extrusion technology is to produce animal feed that is more digestible and nutritious. Fresh scent, freshness, and micro granularity characterise the final product. The expansion of food components frees up room for enzyme manufacturing, allowing starch chains and digestive enzymes to come into closer contact. The development of digestive elements enhances the edibility and digestibility of the diet.