FOOD TECHNOLOGY

Detailed explanation-1: -Food energy used to be measured in Calories (Cal) and some countries still use those units. The conversions are as follows: 1 kJ = 0.2 Cal. 1 Cal = 4.2 kJ.

Detailed explanation-2: -The energy content of food is expressed as “calories” ("calories” are in reality kcal or kilocalories as defined in chemistry; 1 kcal will heat one liter of water one degree C).

Detailed explanation-3: -Calories are a measure of energy-heat energy to be precise. We don’t eat calories; we eat food. Different foods have different amounts of chemical potential energy, which can be released as they are metabolized.