Food colloids margarine

Commercial lecithin products that were sold many decades ago for applications such as chocolate and confectionery products, margarine, bakery goods, pasta products, textiles, insecticides, and paints are still active today because of their emulsifying, wetting, colloidal, antioxidant, and physiological properties. Lecithin s multifunctional properties and its natural status make it an ideal food ingredient. The major applications and functional properties of lecithin products are shown in Table 25 (7). 

Processed foods are often colloidal systems such as suspensions, emulsions and foams [1]. Examples of food emulsions, which are the most commonly used products, are milk, cream, butter, ice cream, margarine, mayonnaise and salad dressings. Emulsions are also prepared as an intermediate step in many food processing items, e.g. powdered toppings, coffee whiteners and cake mixes. These systems are dried emulsions that are re-formed into the emulsion state by the consumer. 

Various natural pigments, including carotenoids, are widely used as additives to provide an attractive colour to manufactured foods (Nir et al., 1993 Antony and Shankaranarayana, 2001 Baker, 2001). Natural extracts have been used for this purpose for centuries, especially annatto, saffron, tomato, paprika and red palm oil. In the food industry, carotenoids are prepared in oily or aqueous mecha, including emulsions, colloidal suspensions, and complexes with proteins (Klaui, 1979). These preparations find widespread applications in margarine, butter, fmit juices and beverages, canned soups, dairy products, desserts and mixes, preserves and symps, sugar and flour confectionery, salad dressings, meat, pasta, and egg products. Carotenoids are also widely used as additives in animal feeds to impart the desired colour to animal tissues or to derived products, or to provide adequate vitamin supplies. 

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