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  • Title: [Study on the dietary protein bioavailability by young men of Yi and Tibetan].
    Author: Zhou JC, Huang CY, Hong JR, Wei DY, Li Q, Jia Q.
    Journal: Wei Sheng Yan Jiu; 2005 Mar; 34(2):217-9. PubMed ID: 15952669.
    Abstract:
    OBJECTIVE: To compare the dietary protein intakes and bioavailability of young male adults of Yi and Tibetan. METHODS: Two groups of subjects aged from 18 to 22y were respectively recruited from schools of Liangshan Yi autonomous region and Tibetan-Qiang autonomous region. Samples of diet, fecal and urine in the nitrogen balance study for each group of subjects were collected, and the nitrogen content was analyzed by semi-micro-Kjeldahl. RESULTS: Total protein intake, apparent absorption, true absorption, biological value, net protein utilization and nitrogen balance for the young man of Yi people were 71.55g/d, 73.19%, 79.79%, 47.58%, 38.17% and 0.71g/d. The corresponding figures for young Tibetan man were 94.33g/d, 86.69%, 91.43%, 48.07%, 44.00% and 3.16g/d. CONCLUSION: The dietary protein intake and bioavailability of young Tibetan man were better than those of Yi, but both Yi and Tibetan young men were able to keep positive N balance with their respective dietary pattern.
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