Soy protein isolate extruded with high moisture retains high nutritional quality.
High-moisture extrusion of soy protein isolate generates a highly palatable meat substitute. No systematic evaluation of the nutritional quality of soy processed in this manner has been performed. This study compared the growth rate of male and female mice fed diets containing soy protein isolate without extrusion or with high-moisture extrusion. Other measures of overall growth and animal health were examined. Minor differences in the parameters were observed. Overall, the extruded soy protein was equally nutritious as the unextruded soy protein for the animals. Hence, high-moisture extrusion may be considered a useful method to generate high-quality protein foods. A longer term feeding trial may be recommended to further define the nutritional adequacy of this protein.
MacDonald
Ruth S
RS
Food Science and Human Nutrition, Iowa State University, Ames, Iowa 50011, USA. ruthmacd@iastate.edu
Pryzbyszewski
Joseph
J
Hsieh
Fu-Hung
FH
D000818:Animals; D001846:Bone Development / Q000187:drug effects; D014676:Diet, Vegetarian; D004044:Dietary Proteins / Q000008:administration & dosage; D005260:Female; D005511:Food Handling / Q000379:methods; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D009753:Nutritive Value; D009929:Organ Size / Q000187:drug effects; D012727:Sex Characteristics; D030262:Soybean Proteins / Q000008:administration & dosage / Q000302:isolation & purification*; D014867:Water / Q000032:analysis; D015430:Weight Gain / Q000187:drug effects
D004044:Dietary Proteins; D030262:Soybean Proteins; D014867:Water