A variety of seafood, such as shrimp, crab, clam and oyster, all contain the chemical element arsenic. Generally, the content is very small, but the increasingly serious environmental pollution may make the arsenic content in these animals reach a high level. The valence of arsenic contained in shrimp is pentavalent. Under normal circumstances, pentavalent arsenic is harmless to human body. Theoretically, high-dose vitamin C (more than 500mg of vitamin C is ingested at one time) and pentavalent arsenic will be transformed into toxic trivalent arsenic (commonly known as "arsenic") through complex chemical reactions, which can lead to human poisoning when trivalent arsenic reaches a certain dose.
nutritive value
Oranges have the effects of relaxing bowels, regulating qi, resolving phlegm, promoting digestion, stimulating appetite, stopping vomiting, relieving pain, and relieving cough, and can be used to treat chest distress, abdominal distension, vomiting, constipation, dysuria, hemorrhoid bleeding, and hangover, fish and crab poisoning.
Oranges are rich in a variety of organic acids and vitamins, which can regulate human metabolism, especially for the elderly and cardiovascular patients.
Orange peel contains fruit acid, which can promote appetite and help digestion for people with insufficient stomach acid.
The cellulose in oranges can help relieve constipation and lower cholesterol. Oranges are rich in vitamin C, which can prevent cancer.