Indicators of food spoilage
i)Odour: Repulsive odours are produced when the bacteria break down the protein present in food.
(ii)Sliminess: It occurs due to bacterial growth.
(iii) Discolouration : Microbial growth may result in discolouration of food.
(iv)Souring: Food items become sour due to production of acids by bacteria.
(v)Gas formation: Bacteria and yeast produces gaseous by-products that affects the texture of food items.