Porphyra is a general term for alternate algae in the sea, and its appearance is dark brown, green black, purple black or red black. Porphyra grows on rocks in shallow waters, mainly distributed in the western part of the North Pacific Ocean. The harvest season is from 165438+ 10 to February of the following year, and it is known as "black gold". Porphyra usually grows well under the strong northeast monsoon and waves. If the winter is not cold enough or the low temperature period is too short, or the wind and waves are not strong enough, laver is not easy to attach to the reef wall. If the weather suddenly clears up and gets hot, laver may dry up and fester.
First, the difference between laver and kelp
1, laver and kelp are rich in protein, but the protein content of laver exceeds that of kelp.
2. Porphyra not only has certain anti-cancer effect and remarkable cosmetic effect, but also has good special effects on preventing arteriosclerosis, sanguine, cerebral thrombosis, dizziness and dyspnea. Porphyra is rich in protein, vitamins (A, B, C, E), calcium and other ingredients, and it is also an alkaline food rich in minerals.
3. Kelp is a kind of large practical seaweed with extremely rich nutrition. It contains protein, fat, carotene, vitamins, calcium, iron, phosphorus and so on. Its sugar, calcium and iron contents are several times to dozens of times higher than those of spinach and rape.
Second, the efficacy of laver
1, prevention of goiter
Can be used for treating goiter caused by iodine deficiency. Porphyra has the function of softening and resolving hard mass, and is also useful for other blood clots.
2. Promote growth and development
Porphyra is rich in choline, calcium and iron, which can enhance memory, treat anemia in women and children, promote the growth of bones and teeth and protect health. Contains a certain amount of mannitol, which can be used as an auxiliary food to treat edema.
3. Prevent tumors
The inhibitory rate of effective components of laver on Ehrlich cancer is 53%, which is helpful for the prevention and treatment of brain tumor, breast cancer, thyroid cancer, malignant lymphoma and other tumors.
4. Improve immune function
Polysaccharides contained in laver can obviously enhance cellular immunity and humoral immunity, promote lymphocyte transformation and improve immunity.