Margarine production

In a follow-up study of those food groups making major contributions to the overall dietary exposure in the UK, the cereals and fats and oils groups were each shown to contribute around one-third of the total dietary exposure.27 Much of this was due to the edible oils in the cereal products. The PAHs were traced back through margarine production to oilseed growth. The source appeared to be on the farm, leaving an unidentified environmental source as the most likely explanation. 

Bell, R.J. 1991. Shortening and margarine products. In Introduction to Fats and Oils Technology, (P.J. Wan, ed.), pp. 183-210, American Oil Chemists Society, Champaign, IL. 

As many margarine plants in the United States are located at considerable distance from their suppliers, truck or rail shipment is required. Loading temperatures and whether the oil must be nitrogen blanketed are specihed. For truck deliveries, the temperature on arrival often is specihed to ensure that the oil is completely liquid. In order to minimize the possibilities for oil degradation, it is optimal to process and deodorize the oil blend at the margarine production location. 

A typical process flow for margarine production is shown in Figure 15. While several types of margarine are produced today, and each has its own variant of the... 

It is difficult to determine the latent crystallization heat in oil blends for margarine production due to their complexity. 

Figure 5. High-pressure piston pump for margarine production. Courtesy of Schroeder Co., Luebeck, Germany.

Margarine products are packed in several ways depending on margarine type, product consistency, and consumer preferences. In the U.S. market, consumer retail margarines and related products, including butter blends, cover a variety of products packaged in different ways (61). These can be grouped as follows ... 

Figure 26 shows a packaged ammonia compressor system designed for servicing an SSHE in margarine production. The system is skid-mounted from the factory for easy installation. Only the condenser of the system is supplied loose. 

In margarine production, raw materials account for about 50% of the margarine cost, actual production costs account for 20%, and other costs are 30% of the total (35). Well-managed formulation and efficient, accurate metering/weighing systems for the various raw materials in the emulsion preparation plant are essential factors for cost-efficient margarine production (35, 76-78). 

Emulsion preparation systems play a very important role for achieving the above productivity and thus the desired profitability in margarine production. Three general systems are normally used for metering and mixing the various ingredients into a water-in-oil emulsion. These are (80) ... 

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