Page 256 - Biochemistry2 (08PB403)
P. 256

Nitrogen balance

It means that individual daily intake of nitrogen, primarily in
the form of dietary protein (100 g protein contain16 g
nitrogen), equals the amount of nitrogen lost by excretion in the
feces and urine

                 Nitrogen balance: Nitrogen intake =

Dietary    N2         nitrogen loss}                  Excretion in
protein  intake                                        Urine (NPN)
                                       N2
                                      loss                  o Urea, uric acids
                    N2                                      o Creatinine,
                 balance
                                                                 Creatine
                                                            o AAs, Ammonia
                                                       Faeces
                                                       Milk, menstrual fluid
   251   252   253   254   255   256   257   258   259   260   261