Common Signs of Food Spoilage

As temperatures climb and microbes become more active, so does the risk of food spoilage, especially protein-rich foods. Food spoilage often has some signals, mainly in terms of color, shape, smell, taste and so on.

Tofu. After deterioration, it is dark gray, dark yellow or reddish-brown; the block shape is incomplete, the tissue structure is rough and loose; the surface is sticky, easily broken by touch, inelastic; there is a bad smell such as rancidity.

Livestock and poultry meat. After deterioration, the color of the flesh is dark, and the fat lacks luster; the appearance is extremely dry or sticky to the hands, and the depression after acupressure is slow to recover or cannot be completely recovered; there is an ammonia or sour taste, and even a stench.

Fish. After metamorphism, the eyeball is flat or sunken, and the cornea is cloudy; the scales are incomplete, fall off easily, fade and turn black, and their edges are dry;

Milk. After deterioration, it is light pink or obvious yellow-green, or gray in color; it is in the form of a viscous and uneven solution, with dense clots or flocs; it has obvious peculiar smell.

Eggs. After deterioration, the eggshell is grayish-black or has spots and cracks; it feels light to the touch, and the egg yolk can be clearly felt when shaken; the light is opaque or has a grayish-brown shadow; when it is opened, it is common to see a sticky shell or scattered yellow.

In addition, foods rich in carbohydrates such as grains, vegetables, fruits, sugars and their products will taste sour, wine or musty after spoilage; vegetable oil, lard, butter, butter, nuts, fried foods, etc. are rich in Fatty food will have a sloppy taste when it goes bad.

  The above are all physical identification methods, which are rough judgments and are suitable for identification of food that has already deteriorated to a certain extent. If those spoiled foods with insignificant physical characteristics are ignored and eaten in the stomach, it will cause a series of vomiting, diarrhea, and even poisoning, so It should also be combined with chemical detection methods. The food safety test kits can accurately and quickly detect and identify a series of food safety indicators that accompany different food spoilage. However, our signal is not just to see, smell, touch, taste, but to speak with data.

Meizheng rapid test kits ensure the safety of food, medicine, environment and water quality as its own responsibility, and at the same time for the food and drug supervision system, agricultural systems, animal husbandry systems, fishery systems, food companies, etc.