Question

Compozitia chimica a bananei e: apa 76,8% , proteine 1,2% lipide 0,3 % carbon 21,7 % greutatea bananei este 116g
Stind ca :
1 g de proteine face 4 kcal
1 g lipide face 9kcal
1 g de carbon face 4 kcal
Calculati continutul energetic la acesta banana

Answer 1

116x76,8/100=89,088g,apa
116x1,2/100=1,392g,proteine
116x0,3/100=0,348g,lipide
116x21,7/100=25,172g,carbon

1g,proteine________4kcal
1,392g___________x
x=5,568kcal

1g,lipide_________9kcal
0,348g__________y
y=3,132kcal

1g,carbon________4kcal
25,172g_________z
z=100,688kcal

Continutul,energetic=5,568kcal+3,132kcal+100,688kcal=109,388kcal