0102030405
?O ka Vitamina A he hua?a momona momona
Ho?olauna
?O ka Vitamin A Palmitate, ka inoa kemika e like me retinol acetate, ?o ia ka huaora mua loa i ?ike ?ia. ?Elua ?ano o ka Vitamin A: ?o ka retinol kahi ?ano mua o VA, aia wale nō i nā holoholona; he carotene kekahi. Hiki ke ho?ohui ?ia ka retinol e ka β-carotene mai nā mea kanu. I loko o ke kino, ma lalo o ka catalysis o β-carotene-15 a me 15′-double oxygenase, ua ho?ololi ?ia ka β-carotene i ratinal i ho?iho?i ?ia i retinol e ka hana o ratinal reductase. No laila ua kapa ?ia ?o β-carotene ma ke ?ano he vitamin precursor.
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Palapala noi
---?O nā mea?ai mea?ai:E ho?ohana nui ?ia i ka hana ?ana i nā mea ho?ohui mea?ai. He kuleana ko?iko?i ia i ke kāko?o ?ana i ka ?ike, ka hana immune, a me ka ?ili olakino.
---?Ai Pa?a:Ho?ohui pinepine ?ia i nā ?ano mea?ai like ?ole e ho?onui i ko lākou waiwai waiwai. ?O nā la?ana ma?amau e pili ana i ka waiū pa?a, nā cereals, a me nā ?ano pēpē pēpē.
--- Nā mea ho?onani a me ka mālama ?ili:?O ka Vitamin A, ma ke ?ano o ka retinol a i ?ole retinyl palmitate, he mea kaulana i nā mea ho?onaninani a me nā huahana mālama ?ili. Ua ?ike ?ia no kāna mau pōmaika?i anti-kahiko, e like me ka hō?emi ?ana i ke ?ano o nā laina maika?i, nā wrinkles, a me ka ho?oikaika ?ana i ka huli ?ana o ka ?ili.
---Ho?omākaukau lā?au lapa?au:Ho?ohana ?ia nā derivatives Vitamin A, i kapa ?ia ?o retinoids, i ka ho?omākaukau lā?au lapa?au. Ho?ohana ?ia lākou i ka mālama ?ana i nā ?ano ?ili like ?ole e like me ka acne, psoriasis, a me ka photoaging. Hiki i nā retinoids ke kōkua i ka ho?oponopono ?ana i ka ulu ?ana o ka cell a ho?oikaika i ke olakino ?ili.
--- Nā mea ho?ohui holoholona:Ho?ohui ?ia i loko o nā ?ano mea?ai holoholona e hō?oia i ka ulu kūpono, ka ulu ?ana, a me ke olakino holo?oko?a o nā holoholona a me nā moa. Kōkua ia iā lākou e kōkua i ka hana reproductive a me ka hana immune.
---?O nā mea ho?ohui olakino maka:Ho?okomo pinepine ?ia i loko o nā mea ho?ohui olakino maka, ma ke ?ano he retinol a i ?ole ma ke ?ano o ka beta-carotene. Ke mana?o nei kēia mau mea ho?opihapiha e kāko?o i ke olakino maka holo?oko?a a pono paha i nā po?e i ka pilikia o ka macular degeneration pili makahiki (AMD) a me nā kūlana maka ?ē a?e.
Hō?ike huahana
?āpana | Waiwai |
Inoa Kimia | Vitamin A Palmitate |
?āpana Molekala | C36H60O2 |
Kaumaha Molekala | 524.87 g/mol |
Ka nana aku | Melemele a ?alani wai |
Ka ho?ohehe?e | ?A?ole hiki ke ho?onā i ka wai |
Lae hehee | 28-29 °C |
Lae paila | Decomposes ma luna o 250 °C |
Maemae | ≥ 98% |
Nā Kūlana Waihona | E mālama i kahi malo?o a malo?o |
Ola Pahu | ?O ka ma?amau 2-3 mau makahiki |
?ala | ?A?ala ?ole |
?O ka mānoanoa | 0.941 g/cm3 |
Hō?ike Hō?ike | 1.50 |
?O ka ho?ololi ?ana | +24° a i +28° |
Nā Metala Kaumaha (e like me Pb) | ≤ 10 ppm |
Nalo ma ka maloo | ≤ 0.5% |
Ho?ā?o | ≥ 1,000,000 IU/g (HPLC) |
Palena Microbial | Kūlike i nā kūlana ?oihana |