Food energy

The energy value per gram of various food components includes:

• fat – 37 kJ (9 Cal) – not all fatty acids may provide the same amount of energy
• alcohol – 29 kJ (7 Cal)
• carbohydrates – 16 kJ (4 Cal) – not all carbohydrates may provide the same amount of energy
• protein – 17 kJ (4 Cal)
• dietary fibre – 13 kJ (3 Cal) – if fermented by bacteria in the large intestine
• water – 0 kJ (0 Cal).
• SINCE 1 KILOWATT HOUR => ENERGY USED BY 10 X100WATT BULBS TURNED ON FOR 1 HOUR=3600 KILOJOULES= 3600/37~97 GRAMS OF FAT