Chemistry and life – why is the sweet potato placed longer and sweeter?When the autumn is over, you can slowly see a lot of baked sweet potatoes on the side of the road. When you are in the winter, you are wearing a cotton coat and stepping on the snow, eating the sweetest baked sweet potato, but ev

Committee office of the state council on May 8, 2019, issued in 2019 by the implementation of the "safe production month" and "safe production wan lixing" the activities of the notice, to determine the safety in production, 2019 the theme of "risk prevention, in addition to the hidden danger, halt t

1. The green grapes were soaked in ethrel diluent and after a day or two, the green grapes become purple grapes. This grape is uneven in color, contains less sugar, and has less flavor and is harmful to humans.How to identify: Consumers can distinguish between appearance and taste. First of all, you