Tài liệu STUDIES IN NUTRITION pptx

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Tài liệu STUDIES IN NUTRITION pptx

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by guest, on January 21, 2010www.jbc.orgDownloaded from by guest, on January 21, 2010www.jbc.orgDownloaded from by guest, on January 21, 2010www.jbc.orgDownloaded from by guest, on January 21, 2010www.jbc.orgDownloaded from by guest, on January 21, 2010www.jbc.orgDownloaded from by guest, on January 21, 2010www.jbc.orgDownloaded from by guest, on January 21, 2010www.jbc.orgDownloaded from by guest, on January 21, 2010www.jbc.orgDownloaded from by guest, on January 21, 2010www.jbc.orgDownloaded from by guest, on January 21, 2010www.jbc.orgDownloaded from [...]... during the feeding of pea globulin is presumably attributable to its inherent inadequacy In comparison with the other vegetable proteins thus far reported in this series of studies, the legume proteins are less well utilized The materials investigated principally were (1) soy bean flour, free from starch; (2) a product prepared from the white bean by thoroughly disintegrating the cells and dissolving... nitrogen balances obtained in the experiments reported in the present paper The soy bean and crude bean proteins maintained generous positive balances This which are, however, uniformly smaller than those for meat difference is explained by the increased elimination of fecal nitrogen A similar explanation accounts for the during the bean periods negative balance during the phaseolin period, but the unfavorable... 18 to 20 were instituted, where the food nitrogen was only two-thirds as great as in the preceding three experiments In all the above experiments, agar and bone ash were included in the diet, and it was therefore desired to eliminate the influence of these “indigestibles” for comparison Hence the experiment recorded in Table 21 Lafayette B Mendel and Morris TABLE Crude Bean Protein S Fine 449 15 with... Bean orotein 300 Sugar;: Lard Agar 2 5 Bone ash 7 Water (contained in the bean protein) 240 Estimated calories 560 , Utilization of Legume TABW Crude Bean Protein Proteins 17 m-t h Agar and Bone PEErODx i%&EtFzdng 8UB.TmxT, DOQ 7 Weight at beginning, 6.7 Kg Weeht at end, 6.4 Kg Bean protein Composition of daily diet Dally Nitrogen output Urine nitrogen, gm Total nitrogen, Nitrogen in foo... PHASEOLIN Dog, Table 94: The food mixture, including water, as detailed in the experimental period reported in Table 24, was heated on a water bath for four to six hours The cooking of the food mixture resulted in the gathering together of the material in small lumps, which may possibly account for the very unfavorable utilization We do not believe that this condition appreciably influenced the result, since... that Salkowski’s protein was prepared by extracting the beans with dilute alkali and precipitating the dissolved protein with acid Utilization 456 of Legume Proteins utilized, this must be accepted with some reservation, at least until the influence of varying quantities of certain indigestible materials upon the utilization of easily digested substances like meat can be ascertained, and a larger number... certain possible contributing causes The bean diets contained celluloses and hemicelluloses, substances inherent in the experimental material and entirely or for the most part indigestible The influence upon utilization of such non-nitrogenous matter cannot be ascertained from the foregoing tables In a few instances the attempt has been made to determine the amounts of these substances which have failed... attempts to feed this preparation in food mixtures, not subjected to heat, invariably resulted in complete failure Ingestion of the material was regularly followed by nausea and vomiting PEA GLOBULIN Dog, Table %5: The pea globulin as used in this experiment was entirely soluble in 10 per cent sodium chloride and was an ideal material for the study of the problem in hand Downloaded from www.jbc.org... bean preparations, since the coefficients for the nitrogen of meat diets including like or greater amounts of such substances was distinctly higher This is further borne out in the following two experiments (Tables 24 and 25) with isolated legume proteins T*BLE Ciwbohydrates Derived from 22 the Food Material Daily Values COMP08ITIONOFTHB PECEB M*TERx*L WEIOHT OF UNDER INc418TBID INYEw!Ic4*TION IAmUYEl... Aaar sUBJEc!T DOG 5 Weight at beginning 6.6 Kg Weight at end 6.2 Kg and Bone Ash - PmRIOD x (4 days) Meat Feedina _- 1 Bean PERIOD XI’ (3 days) F’mtein Feeding grams pVarn* Meat 150 20 20 of daily diet 520 Daily output Urine nitrogen, gin Total nitrogen, gm Nitrogen in food, gm Nitrogen balanc$e;e; Nitrogen Averages feeding necessary throughout 4.24 5.08

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