Abstract
ABSTRACT A soy beverage mix was created using thermally treated, attrition‐milled soy powder, anticaking agent (1.0, 1.5 and 2.0%) and adjunct ingredients (salt, sugar, carrageenan, calcium phosphate) commonly found in a soy beverage. Thermal processing of defatted soy flake at specific moisture levels (30, 35 and 40%) from two different sources was evaluated for effective denaturation of the soy trypsin inhibitor complexes. Identification of an optimal thermal treatment was then used to produce a soy flake milled in a cyclone‐assisted attrition mill. Soy beverage mixes were homogenized with a handheld blender at solution temperatures of 4, 30, and 70C. Separation rates were highest at all treatment levels consisting of the 70C solution temperature (1.67 mL/min) and were lowest for all treatment levels at 4C (0.55 mL/min). Thermal treatment of defatted soy flake resulted in solutions with lower viscosities (87.32 and 151.90 cP for Archer Daniels Midland Co. and L‐Star, respectively). PRACTICAL APPLICATIONSThis article establishes the milling conditions to create an instant soy beverage system. The soy drink mix can be easily used by consumers to make soy beverage or soymilk and is stable for up to 10 min.
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