What are the main steps of ice cream production?
The basic steps in the manufacturing of ice cream are generally as follows: 1)blending of the mix ingredients, 2)pasteurization, 3)homogenization, 4)aging the mix, 5)freezing, 6)packaging and 7)hardening.
How is ice cream maker made?
The resulting preparation is often chilled through either pre-cooling the machine or by employing a machine which freezes the mixture. An ice cream maker has to simultaneously freeze the mixture while churning it so as to aerate the mixture and keep the ice crystals small (less than 50 μm).
Which milk is used for ice cream?
A variety of milk products can be used: cream, whole milk, condensed milk and instant skim-milk powder. The recipes stated below proved satisfactory using whipping cream (32-35% fat), table cream (18% fat) and whole milk. The fat gives the product richness, smoothness and flavour.
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How does the process of making ice cream work?
Following mix processing, the mix is drawn into a flavour tank where any liquid flavours, fruit purees, or colours are added. The mix then enters the dynamic freezing process which both freezes a portion of the water and whips air into the frozen mix.
How long does it take to make ice cream mix?
Mix is pumped through this freezer and is drawn off the other end in a matter of 30 seconds, (or 10 to 15 minutes in the case of batch freezers) with about 50% of its water frozen.
Why do you use two stage homogenization for ice cream?
Two stage homogenization is usually preferred for ice cream mix. Clumping or clustering of the fat is reduced thereby producing a thinner, more rapidly whipped mix. Melt-down is also improved. Homogenization provides the following functions in ice cream manufacture: Reduces size of fat globules Increases surface area Forms membrane
How is pasteurization used to make ice cream?
First the ingredients are selected, weighed and then blended together to produce what is known as the “ice cream mix”. The mix is then pasteurized. Pasteurization is the biological control point in the system, designed for the destruction of pathogenic bacteria.
What are the steps in the ice cream manufacturing process?
The manufacturing process of the ice cream facility is broken down into 7 steps: raw material delivery and storage, base mixing, homogenization and pasteurization, aging, flavor addition and continuous freezing, cartoning, and finally hardening.
How is ice cream made in a batch?
Ice cream mix can be frozen in batch or continuous freezers and the conditions used will depend on the type of freezer. Batch freezers consist of a rotating barrel that is usually filled one-third to one-half full with ice cream mix. As the barrel turns, the air in the barrel is incorporated into the ice cream mix.
How does a continuous freezer process ice cream?
Continuous freezers consist of a fixed barrel that has a blade inside that constantly scrapes the surface of freezing barrel. The ice cream mix is pumped from a bulk tank to the freezing barrel and the air is incorporated with another pump just before it enters the freezing barrel.
How does the process of making water ice work?
Water ice is a blend of sugar, fruit concentrates, stabilizers, flavour and colour. The finished mix is pasteurized and mostly filled into moulds (or pockets) on a rotary or in-line moulding machine. Freezing takes place in the pockets, which pass through a cold brine (salt solution) freezing zone.