Because potassium plays a key role in cancer prevention, in addition to reducing sodium intake, eating more potassium-containing ingredients will greatly reduce the risk of cancer. Potassium is an important cation in human body, and the potassium content of bananas is particularly high. The potassium content of 100g banana is about 330mg, and that of 100g fruit is about100g.
Sweet potato is rich in cassava starch and methyl cellulose, so eat more. In general, the intake of fruits and vegetables should be maintained at 300 to 500 grams per day. In addition to potassium supplementation, these high-salt foods, such as pickled sausages, bacon, idle fish and their salty foods, must be eaten less or not.
History of potassium research
For centuries, potassium salt has existed in the form of saltpeter (potassium nitrate, KNO3), alum (potassium aluminum sulfate dodecahydrate, kal (SO4) 2. 12h2o) and plant ash (potassium carbonate, K2CO3), which are used to make gunpowder, fuel and soap. Reducing potassium-containing substances to elements frustrated early chemists, and potassium was classified as soil by Antoine lavoisier.
Because of the strong activity of potassium, it is difficult to reduce metal potassium from potassium compounds with commonly used reducing agents (such as carbon). Later, in 1807, molten potassium hydroxide was electrolyzed in humphry davy, and it was found that metal pellets were formed, namely potassium.