Foods with unusual strange scents
For foods stored in the refrigerator for a long time, when opening the refrigerator and smelling a strange smell, check where they come from and promptly remove them. This is one of the most noticeable signs of food spoilage.
According to the US Department of Agriculture (USDA), these scents come from volatile organic compounds secreted by bacteria when they "eat" leftover food that you store in the refrigerator for a long time. Even foods stored outside that smell strange are broken. Therefore, it should not be used because it affects health.
Sour foods
Sour foods often appear when bacteria or fungi cause fermentation, converting sugar into acid. This not only changes the flavor and smell of food, but also creates an ideal environment for the growth of disease-causing bacteria. When food becomes sour, it can lead to reduced quality and food safety.
Sour taste due to damage can increase the risk of blood sugar disease, especially for people with diabetes. In addition, consuming sour foods can cause vomiting, diarrhea and other digestive problems.
Foods with mucus
A study in the American journal Food Control emphasized that oil in food is a clear sign reflecting the growth of bacteria. When observing the appearance of mucus on the surface of food, it turns out that they are severely damaged, such as vegetables, if they become too soft and melt, mucus should be thrown away.
The texture of food becomes strange
Fresh defrosted meat and fish must not be sticky, mushy or foul-smelling. If you see meat with the above phenomena, throw it away immediately to ensure the safety of your health.
According to a study in the American Journal of Food Science, changes in the structure of food are caused by the impact of moisture. This affects quality, flavor and also has the potential to be high in harmful bacteria.
Foods with markers
Almost all types of mold are harmful to health. Therefore, if you see mold appearing on food, especially banh mi or fruit... you must throw it away immediately. According to the World Health Organization (WHO), some types of mold produce toxins, even causing cancer.
In addition, eating foods containing mold can cause digestive problems. Some types of mold often contain substances that irritate the intestines, leading to problems such as diarrhea, abdominal pain and indigestion. Some people may experience an allergic reaction to mold, causing symptoms such as rash, itching or difficulty breathing.
Notes when storing food in the refrigerator
First, store in plastic and cover before putting leftover food in the refrigerator. Cooked food should be refrigerated outside before being refrigerated.
After buying, pick up the chopped vegetables and fruits and wash them, drain them with water, which can be wrapped in newspaper or plastic bags to keep the food from losing water and staying fresh for a long time before putting them in the refrigerator for storage.
When purchased, fresh meat and fish need to be stored in a stone unit to keep them for a long time. It is necessary to clean before putting these foods in boxes or plastic bags, then tie them tightly and store them in a stone compartment.
