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海带不宜久泡海带晾干之后,绝大部分碘、钾、维生素、甘露醇等附着在海带表皮及白粉中,这些物质大部分溶于水。研究表明,海带在水中浸泡20～30分钟,表面85%以上的碘和甘露醇会溶入水中,其它的可溶性物质也开始逐渐溶解,海带在水中浸泡半天以上或反复浸泡,营养成分损失就更大,最后仅剩下海带的胶质体和纤维素,失去了食用海带的意义。正确的食用方法是在食用海带之前,先将海带表面的尘土洗刷干净,然后放在水里冲洗数次,这样海带的营养成分
Kelp should not be soaked in kelp long time to dry, the vast majority of iodine, potassium, vitamins, mannitol and other attached to the kelp epidermis and white powder, most of these substances are soluble in water. Studies have shown that kelp immersed in water for 20 to 30 minutes, the surface of more than 85% of iodine and mannitol will dissolve in water, other soluble substances also began to gradually dissolve, kelp soaked in water for more than half a day or soaked, nutrient loss more Large, and finally only the seaweed gel and cellulose, lost the meaning of eating kelp. The correct method is to eat edible kelp, the kelp surface of the first scrub clean the dust, and then rinse in the water several times, so that the nutritional content of kelp