海带,又名昆布,既是中药,又可作为食用。据有关部门测定和实验,干海带中有毒物质砷的含量较高,但经水充分浸泡后会大大减少,达到国家食品卫生标准,这是因为砷和砷化物能溶于水的缘故。为此,干海带食用前应用水浸泡在24小时,而 Kelp, also known as Khumbu, is both a Chinese medicine and a food. According to the determination and experimentation of related departments, the content of arsenic in dried kelp is relatively high, but it will be greatly reduced after fully immersed in water and meet the national food hygiene standards. This is because arsenic and arsenide are soluble in water. For this purpose, dry seaweed should be soaked in water for 24 hours before consumption.