Metabolic studies of energy dense compounds for aerospace nutrition. AMRL-TR-64-121.

The aim of these studies was the development ol mode! eompomids with \\ hieh information useful in understanding energy metabolism might he obtained to aid in development of food lor space travel. Seven-month studies feeding rats with 1,3-butanediol have been completed. The results ol these studies eonfirm the utili/alion ol this compound as an energy source. Measurement of a number ol metabolicparameters at the completion of the study support the contention that l,3-butanedi()l is probably metaboli/ed through carbohydrate rather than fat pathways. Metabolism studies with 2,-1-dimethvlheplanoicacid labeled with C" in the alpha methyl group indicate that this eompound as predicted is oxidi/ed through piopionate. Design and construction details ol the direct animal calorimeter are presented. Results ol a limited number of studies with rats led various diets indicate that the device' luifills its design functions " • "■lÄl". lOBW» »^P»IU1#f