Kelp is one of the most common algae foods on our table, and it is known not only because of its appearance, but also because of its rich nutritional value:
Can eating more kelp prevent thyroid disease?
01
Eating more kelp can prevent thyroid disease
Although kelp is helpful for thyroid enlargement caused by iodine deficiency, there are many types of thyroid diseases, and most thyroid diseases are not caused by iodine deficiency. Moreover, iodine intake is too high, which is likely to cause hyperthyroidism, so it is still necessary to eat in moderation (the recommended daily iodine intake for adults is 150 micrograms)[1]!
02
The emerald green kelp is all dyed
Kelp is a brown algae plant, and kelp pigment can be roughly divided into green chlorophyll and yellow or brown carotenoids, and chlorophyll is the main reason for kelp's green color.
When the kelp is removed from the water, the cells lose their activity and the organic acids in the cells are released, which eventually separates the magnesium ions, causing the kelp to turn yellow-brown when it comes out of the water. When consumed, kelp is either soaked in zinc chloride or calcium chloride to "regreen", or copper sulfate or copper chloride is treated with kelp, not dyed [2].
What is green is good kelp?2 tricks to teach you to pick kelp
01
Look at hoarfrost
Kelp is not fresh or not, just look at the hoarfrost on the surface of the kelp, if there is more hoarfrost on the surface can be scraped off, this kelp is fresh, if there is no hoarfrost on the surface, this kelp is more humid or put for a long time, it is not recommended to buy.
02
Look at the thickness
Thin kelp is due to stunted growth caused by a lack of nutrients during growth, and the taste of this kelp is poor when cooked. It is recommended that you buy thick kelp, which will not be transparent when exposed to the sun~
Editor: Dr. Chunyu
Source: Yitu.com
Bibliography:
[1] Zimmermann, M. B., & Boelaert, K. (2015). Iodine deficiency and thyroid disorders. The Lancet Diabetes & Endocrinology, 3(4), 286-295.
[2] Teas, J., Braverman, L. E., Kurzer, M. S., Pino, S., Hurley, T. G., & Hebert, J. R. (2004). Seaweed and soy: companion foods in Asian cuisine and their effects on thyroid function in American women. Journal of Medicinal Food, 7(1), 52-61.