FOOD20003 Lecture Notes - Lecture 3: Antibody, Kwashiorkor, Fluid Balance

• School: University of Melbourne
• Department: Food Science
• Course: FOOD20003
• Professor: ken Ng

Document Summary

* a (cid:373)easu(cid:396)e of p(cid:396)otei(cid:374) (cid:395)uality assessed (cid:271)y (cid:272)o(cid:373)pa(cid:396)i(cid:374)g a p(cid:396)otei(cid:374)"s a(cid:373)i(cid:374)o a(cid:272)id patte(cid:396)(cid:374) (cid:449)ith that of a reference protein. *for every 3210 units of essential amino acids, 145 must be his, 340 must be ile, 540 must be. * if the proteins limiting amino acid is 80% of the amount found in reference protein, it is scored at. The (cid:272)he(cid:373)i(cid:272)al process used to asses which proteins are present & their quantities can destroy certain amino acids (therefore can underestimate amino acids) * protein digestibility corrected amino acid score. * problem: rats used (not identical to humans) * measu(cid:396)es effi(cid:272)ie(cid:374)(cid:272)y of p(cid:396)otei(cid:374) to suppo(cid:396)t (cid:271)ody"s (cid:374)eeds. No protein fed, nitrogen in urine & faeces measured - baseline. * bv = n retained/n absorbed * 100. * in a test of biological value, two nitrogen balance studies are done. In the first, no protein is fed, and nitrogen (n) excretions in the urine and faeces are measured.