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Continuous Mayonnaise Production Line -Ftherm® Machinery Votator,Scraped Surface Heat Exchanger

November 28, 2023

Continuous Mayonnaise Production Line -Ftherm® Machinery Votator,Scraped Surface Heat Exchanger

November 28, 2023

Continuous Mayonnaise Production Line -Ftherm® Machinery Votator,Scraped Surface Heat Exchanger

Mayonnaise is a so-called oil in water emulsion. When producing mayonnaise, the oil phase is divided in o droplets, size 2 to 10 microns, where the majority should be around 3 to 4 microns. To divide the oil phase in o droplets, energy is needed, which is generally applied by high shear mixing. Without using high shear force, the oil droplets would gather again after some time. The resulting fine dispersion of minute droplets of oil and water is called emulsion.
In order to assure a stable emulsion, the surface has to be covered with a so-called emulsifier. The emulsifier is an ingredient that in a chemical sense has an oily and an aqueous side. The oily part of the molecule will penetrate in o the oil droplet, whereas the aqueous side will be pointed at the surrounding aqueous environment. In this way, the emulsion is stable and becomes the desired high viscosity. The emulsifier in classic mayonnaise is mainly lecithin, of which the source is egg yolk.
The egg yolk content in full-fat mayonnaise is 8% to 10%. Classic mayonnaise contains 79 – 80% oil, vinegar, sugar, salt, mustard, and no further binding agents such as gums. Due to the lack of further binding agents, full-fat mayonnaise is fully dependent on the stability of the emulsion. The role of egg yolk is therefore very important in this type of mayonnaise.
In medium and low-fat mayonnaise, the water phase is bound by starch and/or gums. The oil content is too low to get an emulsion that is stable and viscous. However, by “thickening” the water phase, viscosity and stability are achieved. The size and deviation of the droplets are hereby still important, but not as critical as in full-fat mayonnaise. In low-fat recipes the role of egg yolk-based lecithin can be fully covered by starch, eventually starch and gum (xanthan gum).
Food products can be labeled vegan when all ingredients are plant-based. In other words, meat, dairy, and egg-based ingredients are a no–go. For mayonnaise, this has consequences. Depending on the recipe, some 2 to 10% of the total recipe is egg yolk. This is the case when liquid egg yolk is used, but it is no different from the equivalent when using egg yolk powder.
To produce vegan mayonnaise, the functionality of the egg yolk needs to be covered by an alternative, plant-based source of lecithin. Soy is a suitable and common source of lecithin, though there are other alternatives such as sunflower lecithin. Of course, the pure functional factor of a plant-based source of lecithin does not cover all aspects of the use of egg yolk in mayonnaise. Egg yolk also contributes to the taste and color of mayonnaise. However, this can fairly easily be arranged by the use of plant-based flavor and colorant.

In principle, the processing of vegan mayonnaise is no different than egg-yolk-based mayonnaise. Both in batch emulsifying systems and in continuous emulsifying systems, the process steps can be left unchanged, but: is to be expected that the efficiency of soy-based lecithin is somewhat lower than the efficiency of egg yolk-based lecithin. Therefore, the other influencing process parameters can be critical and should be optimized. Temperatures of the oil and water phase when entering the emulsifier can be optimized by pre-cooling. Additionally, pre-mixing before entering the emulsifier area is a further possibility to improve emulsifying. Obviously, the emulsifier itself is an important factor and the shear force, retention time, and retention time variation are all additional key factors to take in o consideration.

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The scraped surface heat exchanger produced by Ftherm Machinery has the following characteristics:

1. Heat exchange equipment that meets food hygiene standards.

2. High heat transfer performance, three to four times that of other heat exchangers, and more homogeneous and emulsification.

3. Compact structure and wide application range; especially suitable for materials with high viscosity, easy to crystallize or easy to produce coking film and particles.

4. Easy to clean, save cleaning time and improve work efficiency. General heat exchange equipment takes time to clean the heat exchange surface after working for a period of time, while the scraper heat exchanger with its unique scraper design, can clean the heat transfer surface in time with the help of scraper stirring, and speed up the heat exchange performance. Solve the problems accumulated over the years in the heat exchanger industry.

5. The sealing performance is good, and the mechanical seal that meets the hygienic standard is adopted, and the service life is longer.
This product is used to assemble in o a continuous Shida sauce production system, with stable product and high production efficiency.

Our company provides a complete set of Custard production equipment.

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