Towards Sustainable Cities trough a Decrease in CO<sub>2</sub> Emissions Based on Creating Consciousness on Human Habits and Its Relations to Body CO<sub>2</sub> Emissions and Associated Impacts : Table 2

Table 2: Typical mass and energy associated to daily food consumption.

Parameter	units
Protein mass use	gr	115
Fat mass use	gr	94
Carbohydrate mass use	gr	299
Total mass use	gr	509
Gross energy in food used	Kcal/kg	2772
Protein	%	22.61
Fat	%	18.51
Carbohydrate	%	58.88
Energy in Protein, effective	kcal/kg	4052
Energy in Fat, effective	kcal/kg	8930
Energy in Carbohydrate, effective	kcal/kg	4030
Total energy, effective	kcal/kg	4942
Efective daily energy	kcal/day	2513
Effective energy/gross energy		0.91
Estimated carbon in Protein	% C	54.9
Estimated carbon in Fat	% C	78.0
Estimated carbon in carbohydrate	% C	40.0
Carbon available in food	kg/day	0.26
Carbon digested	kg/day	0.23
CO₂ generated by digested food	kg/day	0.85
CO₂ generated	Kg/kg food	1.68
CO₂ generated	Kg/Kcal gross	0.00031