Storage of vegetables and fruits in plastic bags
storage of vegetables and fruits in plastic bags is a scientific method of scientific preservation, but the storage method is not scientific. The principle is to reduce the concentration of oxygen and increase the concentration of carbon dioxide, so that the fruits and vegetables are dormant and the storage period is prolonged.
, however, the storage time should not be too long. Because vegetables and fruits are organic foods, they contain high water content (60%--95%) and contain water-soluble nutrients and enzymes. There is still strong breathing activity throughout the storage period.
in the ordinary case, every 10 degrees Celsius increases, the intensity of respiration is doubled. Under the condition of oxygen, the carbohydrates or other organic substances in the fruits and vegetables are oxidized and decomposed to produce carbon dioxide and water and release a large amount of ripening. Under the condition of lack of nourished, the sugar can not be oxidized and can only be decomposed to produce alcohol and carbon dioxide. And let out a small amount of heat.
however, the carbon dioxide concentration can not rise indefinitely, only by 10%. The drop of oxygen concentration should not exceed 5%. Otherwise, the fruit will have to decompose more nutrients in order to get enough energy for life activities during hypoxia.
at the same time, the alcohol produced by anoxic respiration will remain in fruit thinning, which will cause fruit rotten and rot, so the storage time of fruits and vegetables in plastic bags should not be too long.
if you want to store the fruit and vegetable in a plastic bag, please don't be afraid of trouble, open the mouth of the plastic bag for two or three days, release carbon dioxide and heat, and then tie the mouth, which will reduce the occurrence of decay and deterioration.