Question

Cho một thực phẩm có độ ẩm tương đối là 81%, hỏi hoạt độ của nước trong thực phẩm đó là

Answer 1

Given question is:

Given a food with a relative humidity of 81%, what is the water activity in that food?

Step-by-step explanation:

Water activity in food can be determined by using the below-shown formula:

`water activity=(equilibrium relative humidity)/(100)`

Equilibrium is established between the vapor pressure of food and the surrounding air media.

Thus, for the given food the relative humidity is 81%.

hence, its water activity is

`81/100\\=0.81`