Monday, August 20, 2007

Ingredient Trends and the Effects on the Extrusion Process

Galen J. Rokey, Manager, Wenger Mfg., Inc., Kansas, USA
Email: grokey@wenger.com
I. Benefits of proper particle size in raw materials
a. Product appearance
b. Reduction of blocked die orifice
c. Ease of cooking
d. Increase in throughputs

II. Protein constituents in recipe
a. Functional versus non-functional sources
b. Impact of high levels of vegetable proteins

III. Starch components of the recipe
a. Starch functionality
b. Recommended starch levels

IV. Effects of fat in the diet
a. Internal versus external fat addition
b. Impact of fat levels on the product technical properties
c. Proper analysis methods for fat levels

V. Role of minor ingredients
a. Vitamins and pigments
b. Humectants and other preservatives
c. Rework

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