The preserved grapefruit fruit produced by the Changshan Yishan Jiuhuyou Deep Processing Factory, which is sold by Kecheng Aixiang Food Company in Quzhou City, does not meet the national food safety standards.
 
Mold is a fungus and exists widely in nature. Excessive mold in preserved grapefruit may be due to contamination of raw materials, or improper control of sanitary conditions during production, storage, transportation, and sales, resulting in mold contamination of the product. Mold contamination can spoil the food, destroy the color, aroma and taste of the food, lose the edible value of the food, and produce mycotoxins that endanger human health.