Digestibility and Energy Value of Germrice
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概要
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Four male and seven female young adults were fed a semisynthetic diet including egg and soy powder as protein source for seven days (Basal diet period), and in the following seven days 200g (for males) or 130g (for females) of germrice was added with the expense of a part of corn starch and sugar in the basal diet (Test diet period). Urine and feces were collected completely throughout the periods and the contents of nitrogen, fat and energy in these excreta were determined. Digestibility of protein (N), fat and carbohydrate (by difference) was calculated. Digestibility of protein (N), fat and carbohydrate of the germrice was 82.5%, 64.2%, and 99.0%, respectively. The available energy of fat and carbohydrate in the diet is equal to the gross energy of the nutrients absorbed (intake-fecal loss). However, the available energy of protein is the difference between the gross energy of the absorbed protein and the gross energy in the urine. Thus, the available energy (kcal/g) of the respective nutrients in germrice was calculated as 3.55 for protein, 5.97 for fat and 4.16 for carbohydrate. The total available energy of the material (germrice) obtained by direct measuring of the combustion energy of the material, urine and feces was 3.62kcal/g and the ratio of the total available energy to intake energy (Net Energy Availability) was 96.8%. These data for germrice were compared with those for polished rice obtained from the same subjects under the same experimental conditions.
- 公益社団法人 日本栄養・食糧学会の論文
公益社団法人 日本栄養・食糧学会 | 論文
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