Vitamin A (retinol): Njirimara, uru, norm, nke ngwaahịa nwere

Retinol (Vitamin A) bụ vitamin nwere antioxidant na -abụ abụba. A hụrụ ya na nri ahịhịa na ụmụ anụmanụ. N’ime ahụ mmadụ, retinol na-akpụ site na beta-carotene.

Vitamin akụkọ ihe mere eme

Vitamin A nwetara aha ya n'ihi eziokwu ahụ bụ na achọpụtara ya tupu ndị ọzọ wee bụrụ onye nwe leta mbụ nke mkpụrụedemede Latin na aha. Na 1913, otu ndị ọkà mmụta sayensị nọọrọ onwe ha na ọnọdụ ụlọ nyocha chọpụtara na na mgbakwunye nri na-edozi ahụ na carbohydrates na protein, ahụ chọrọ ụfọdụ ihe ndị ọzọ, na-enweghị nke a na-emebi iguzosi ike n'ezi ihe nke anụ ahụ, ọhụụ na-adaba na ọrụ nke akụkụ ahụ niile dị n'ime ya.

Achọpụtala ihe abụọ dị mkpa. A na-akpọ nke mbụ otu A. Ọ gụnyere syntinsized retinol, tocopherol na calciferol. Otu nke abuo, n’otu n’otu, bu aha ya B. O gunyere otutu ihe nwere njiri mara. N'ikpeazụ, a gbakwunyere otu a site n'oge ruo n'oge, ụfọdụ n'ime ya, mgbe ha nyochachara ogologo oge, ewepụrụ ha kpamkpam. Nke a bụ ihe kpatara vitamin B12 mana enweghị B11.

Ogologo oge iji chọpụta njirimara bara uru nke retinol ka enyerela Nobel Nrite ugboro abụọ:

• maka nkọwa nke usoro kemịkal zuru ezu nke retinol site n'aka Paul Carrer na 1937;
• maka ọmụmụ ya banyere mmetụta bara uru nke retinol na mweghachi nke ọrụ ọrụ ọhụụ site n'aka George Wald na 1967.

Vitamin A nwere ọtụtụ aha. Ihe kachasị ama bụ retinol. I nwekwara ike ịchọta ihe ndị a: dehydroretinol, ihe na-egbochi xerophthalmic ma ọ bụ mgbochi nje na-efe efe.

Chemical-nkịtị Njirimara

Ọ bụ mmadụ ole na ole, na-elele usoro a, ga-enwe ike ịghọta ịdị iche na njirimara ya. Ya mere, anyị ga-enyocha ya n'ụzọ zuru ezu.

Iv_design - stock.adobe.com

Ngwurugwu vitamin A nwere nanị kristal, nke ọkụ, oxygen na-ebibi, na mmiri na-edozi mmiri. Ma n'okpuru ndu nke organic bekee, ọ na-ọma synthesized. Ndị na-emepụta ihe, na-amata ihe onwunwe a nke vitamin, wepụta ya n'ụdị capsules nwere abụba, na, dị ka a na-achị, a na-eji iko ojii eme ihe dị ka nkwakọ ngwaahịa.

N'otu oge n'ime ahụ, retinol na-agbaji n'ime ihe abụọ na - arụ ọrụ - retinal na retinoic acid, ọtụtụ n'ime ha na - etinye uche na anụ ahụ imeju. Mana n'ime akụrụ ha na-agbaze n'otu ntabi, na-ahapụ naanị obere ọkọnọ nke ihe dịka 10% nke ngụkọta. N'ihi ikike ịnọgide na-ahụ, ụfọdụ ndoputa na-ebilite, nke mmadụ ji amamihe mee. Akụ a nke vitamin A bara uru karịsịa maka ndị na-eme egwuregwu, n'ihi na ọ bụ ha nwere ike ịba ụba nke vitamin n'ihi mmega ahụ mgbe niile.

Site na nri di iche-iche, udi vitamin A abuo n’ahu, site na nri umu anumanu, anyi na enweta retinol n’onwe ya (nke nwere abu abuo n’onu), na uzo esi enweta ahihia na enweta sel nwere bio-soluble carotene n’udi alpha, beta na gamma carotenes. Ma retinol nwere ike ịmepụta ha naanị n'okpuru otu ọnọdụ - iji nweta ọgwụ nke ụzarị ultraviolet, na okwu ndị ọzọ - ịga ije na anyanwụ. Na-enweghị nke a, a naghị emepụta retinol. Ihe dị otú ahụ nke mgbanwe dị mkpa maka ahụike nke anụ ahụ.

Vitamin A uru

• Na-edozi metabolism.
• Weghachite mkpuchi anụ ahụ njikọ.
• Na-agbanwe mkpụrụ ndụ nke lipid na anụ ahụ ọkpụkpụ.
• Nwere antimicrobial na antibacterial Njirimara.
• Na-ewusi ihe nchebe sitere n’okike nke mkpụrụ ndụ.
• Na-egbochi ọrịa nke akụkụ ndị a na-ahụ anya.
• Synthesizes sel nke nkwonkwo ọmụmụ.
• Na-akwado nhazi mmiri na nnu nke oghere intracellular.
• Ọ nwere mmetụta antitumor.
• Soro na njikọ nke protein na steroid.
• Neutralizes n'omume nke radicals.
• Mma mmekọahụ.

Ike vitamin A ịrụzi sel ndị mebiri emebi dị mkpa maka ụdị anụ ahụ jikọrọ ọnụ. A na-eji ihe a eme ihe n'ụzọ zuru ezu na usoro ịchọ mma, carotenoids na-arụsi ọrụ ike ịlụ ọgụ maka mgbanwe akpụkpọ anụ afọ, melite usoro nke ntutu na mbọ.

Ihe 4 dị mkpa nke retinol nke ndị na-eme egwuregwu chọrọ:

1. na-enyere aka iwusi ọkpụkpụ ike ma gbochie leaching calcium;
2. na-edebe oke mmanu zuru oke maka nkwonkwo;
3. na-ekere òkè na nchịkwa nke mkpụrụ ndụ nke cartilage;
4. na-ekere òkè na njikọ nke ihe ndị na-edozi ahụ na sel nke mmiri mmiri capsule njikọ, na-egbochi ya ihicha.

Kwa ụbọchị

Retinol dị mkpa maka onye ọ bụla n'ime anyị n'ọtụtụ zuru oke. Tebụl ahụ na-egosi vitamin kwa ụbọchị chọrọ maka otu afọ dị iche iche.

Na karama nwere ihe ndị na-arụsi ọrụ ike na-arụsi ọrụ ike, dị ka a na-achị, usoro nchịkwa na ọdịnaya nke ihe nọ n'ọrụ na 1 capsule ma ọ bụ ngaji atụ. Dabere na data dị na tebụl, ọ gaghị esiri ike ịgbakọ ọnụego vitamin A.

Biko rịba ama na mkpa maka vitamin na ndị na-eme egwuregwu dị elu karịa ndị na-adịghị anya egwuregwu. Maka ndị na-ekpughere anụ ahụ mgbe niile, ọ dị mkpa icheta na nri retinol kwa ụbọchị iji nọgide na-enwe ahụike nke ihe ndị dị na usoro musculoskeletal kwesịrị ịdịkarịa ala 1.5 mg, mana ọ gafere 3 mg iji zere ị overụbiga mmanya ókè (nke a gosikwara na tebụl dị n'elu) ...

Retinol ọdịnaya na ngwaahịa

Anyị ekwuola na ụdị retinol dị iche iche sitere na ihe ọkụkụ na anụmanụ. Anyị na-ewetara gị TOP 15 ngwaahịa nwere nnukwu ọdịnaya nke retinol:

Ọtụtụ ndị na-eme egwuregwu na-etolite nri onye ọ bụla anaghị ewebata nri sitere na ndepụta a mgbe niile. Ojiji nke ihe mgbakwunye retinol pụrụ iche ga - enyere aka maka mkpa vitamin A. Ọ na-etinye obi gị dum na-edozi ya na protein na amino acid.

Fa alfaolga - ngwaahịa.adobe.com

Mgbochi iji retinol

Ọ dị mkpa icheta na vitamin A adịghị edozi mgbe niile. N'ihi ike ya ịbakọba n'ime imeju, ọ nwere ike ịnọ n'ime ahụ n'ọtụtụ zuru oke ogologo oge. Site na mmega ahụ siri ike na mgbanwe ndị metụtara afọ, a na-eri ya nke ọma, mana n'agbanyeghị nke ahụ, ọ naghị atụ aro ka ị gabiga iwu kwa ụbọchị.

Ntughari retinol nwere ike ibute nsonaazụ ndị a:

• mgbanwe mgbanwe ndu imeju;
• egbu egbu egbu;
• na-acha odo odo nke akpụkpọ anụ mucous na akpụkpọ ahụ;
• ọbara mgbali intracranial.

Lelee vidiyo ahụ: Top 10 Foods Highest In Beta-CaroteneVitamin A (November 2024).