Thiamin

I-Thiamin ingenye yamavithamini B. Amavithamini B yiqembu lamavithamini ancibilikiswa ngamanzi ayingxenye yokuphendula okuningi kwamakhemikhali emzimbeni.

I-Thiamin (uvithamini B1) isiza amaseli omzimba ukushintsha ama-carbohydrate abe ngamandla. Indima enkulu yama-carbohydrate ukuhlinzeka ngamandla omzimba, ikakhulukazi ubuchopho nohlelo lwezinzwa.

UThiamin naye udlala indima ekunciphiseni kwemisipha nasekuqhubeni amasiginali wezinzwa.

I-Thiamin ibalulekile ekuguqulweni komzimba kwe-pyruvate.

I-Thiamin itholakala ku:

• Imikhiqizo enothile, eqinisiwe, negcwele okusanhlamvu njengesinkwa, okusanhlamvu, ilayisi, ipasta nofulawa
• Amagciwane kakolweni
• Inyama yenkomo nengulube
• I-trout ne-tuna ye-bluefin
• Iqanda
• Ama-legumes nophizi
• Amantongomane nembewu

Imikhiqizo yobisi, izithelo nemifino ayiphezulu kakhulu ku-thiamin ngamanani amancane. Kepha uma udla amanani amakhulu alawa, aba ngumthombo obalulekile we-thiamin.

Ukuntuleka kwe-thiamin kungadala ubuthakathaka, ukukhathala, i-psychosis, kanye nokulimala kwemizwa.

Ukuntuleka kwethayamin e-United States kuvame ukubonakala kubantu abasebenzisa kabi utshwala (utshwala). Utshwala obuningi benza kube nzima emzimbeni ukumunca i-thiamin ekudleni.

Ngaphandle kokuthi labo abanomlutha wotshwala bathola inani eliphakeme kunokujwayelekile le-thiamin ukwenza lo mehluko, umzimba ngeke uthole eyanele leyo nto. Lokhu kungaholela esifo okuthiwa yi-beriberi.

Ngokushoda okukhulu kwe-thiamin, kungenzeka ukulimala kobuchopho. Uhlobo olulodwa lubizwa nge-Korsakoff syndrome. Esinye isifo seWernicke. Kungaba noma zombili zalezi zimo zingenzeka kumuntu ofanayo.

Abukho ubuthi obaziwayo obuxhunyaniswe ne-thiamin.

I-Recommended Dietary Allowance (RDA) yamavithamini ikhombisa ukuthi abantu abaningi kufanele bathole malini kuvithamini ngamunye ngosuku ngalunye. I-RDA yamavithamini ingasetshenziswa njengezinjongo zomuntu ngamunye.

Ukuthi uvithamini ngamunye udinga kangakanani kuya ngeminyaka yakho nobulili bakho. Ezinye izinto, njengokukhulelwa kanye nokugula, nakho kubalulekile. Abantu abadala nabesifazane abakhulelwe noma abancelisayo badinga amazinga aphezulu o-thiamin kunezingane ezincane.

Ukufakwa Kwereferensi Yezokudla kwe-thiamin:

Izinsana

• Izinyanga ezingama-0 kuye kwezingu-6: 0.2 * milligrams ngosuku (mg / ngosuku)
• Izinyanga eziyi-7 kuya kwezingu-12: 0.3 * mg / ngosuku

Ukudla okwanele (AI)

Izingane

• 1 kuya eminyakeni engu-3: 0.5 mg / ngosuku
• Iminyaka emi-4 kuya kwengu-8: 0.6 mg / ngosuku
• Iminyaka eyi-9 kuye kwengu-13: 0.9 mg / ngosuku

Intsha kanye nabantu abadala

• Abesilisa abaneminyaka engu-14 nangaphezulu: 1.2 mg / ngosuku
• Abesifazane abaneminyaka engu-14 kuya kwengu-18: 1.0 mg / ngosuku
• Abesifazane abaneminyaka engu-19 nangaphezulu: 1.1 mg / ngosuku (1.4 mg edingekayo ngesikhathi sokukhulelwa kanye ne-lactation)

Indlela engcono yokuthola imfuneko yansuku zonke yamavithamini abalulekile ukudla ukudla okulinganiselayo okuqukethe izinhlobo ezahlukene zokudla.

Uvithamini B1; Thiamine

• Vitamin B1 inzuzo
• Umthombo we-Vitamin B1

UMason JB. Amavithamini, umkhondo wamaminerali, namanye ama-micronutrients. Ku: IGoldman L, iSchafer AI, ama-eds. Imithi yeGoldman-Cecil. Umhla ka-25. IPhiladelphia, PA: Elsevier Saunders; 2016: isahluko 218.

ISachdev HPS, Shah D. Vitamin B ukushiyeka nokuningi. Ku: Kliegman RM, St Geme JW, Blum NJ, Shah SS, Tasker RC, Wilson KM, eds. Incwadi kaNelson Yezingane. Umhlaka 21. IPhiladelphia, PA: Elsevier; 2020: isahluko 62.

USalwen MJ. Amavithamini nezinto ezilandelwayo. Ku: McPherson RA, Pincus MR, abahleli. UHenry’s Clinical Diagnosis and Management by Laboratory Methods. Umhla ka-23. ISt Louis, MO: Elsevier; 2017: isahluko 26.

USmith B, Thompson J. Ukudla okunomsoco nokukhula. Ku: Isibhedlela iJohns Hopkins, Hughes HK, Kahl LK, eds. IHarriet Lane Handbook. Umhlaka 21. IPhiladelphia, PA: Elsevier; 2018: isahluko 21.