Hauv tsev neeg vitamin B, vitamin B7 yog qhov tsis pom tseeb thiab txawm tias ntau tus neeg tsis quav ntsej, tab sis nws kuj muaj nws tus nqi tshwj xeeb thiab tseem ceeb rau tib neeg lub cev.
Vitamin B7, tseem hu ua biotin, vitamin H los yog coenzyme R, yog dej-soluble vitamin B. Nws yog dav muaj nyob rau hauv tsawg concentrations nyob rau hauv feem ntau cov tsiaj thiab cov ntaub so ntswg, xws li mis nyuj, qe qe, nqaij ntshiv, tsiaj lub siab thiab lub raum, raws li zoo raws li ntau yam txiv hmab txiv ntoo xws li strawberries, nceb, grapefruit thiab grapes, raws li zoo raws li nyob rau hauv cov nplej xim av. , npias, poov xab thiab nplej.
D-Biotin hmoovyog xim dawb lossis dawb crystalline hmoov, yooj yim soluble hauv dej, insoluble hauv ethanol, chloroform thiab ether, thiab muaj kev ua haujlwm kho qhov muag. Nws tsis yooj yim puas los ntawm acid, alkali, lub teeb thiab cua ntawm chav tsev kub. Nws ruaj khov rau cua sov thiab tuaj yeem ua kom tsis muaj menyuam ntawm qhov kub thiab txias, tab sis nws yuav decomposed thiab inactivated thaum muaj zog alkali thiab oxidant.
Biotin yog ib qho tseem ceeb pom nyob rau hauv daim siab nyob rau hauv lub xyoo 1930s thaum lub sij hawm kev tshawb fawb ntawm cov poov xab loj hlob yam thiab rhizobia kev loj hlob thiab ua pa-txhawb yam tseem ceeb. Nws tiv thaiv cov plaub hau poob thiab tawv nqaij puas tsuaj hauv nas noj cov qe protein.
Biotin muaj kev koom tes hauv kev kho thiab rov tsim dua tshiab ntawm cov hlwb thiab txhim kho cov qauv ntawm keratin, cov protein yooj yim uas ua rau cov plaub hau, tawv nqaij thiab rau tes. Yog li ntawd, kev kho mob tshwm sim ntawm tsis muaj biotin feem ntau yog kev puas tsuaj rau ntawm daim tawv nqaij, mucous daim nyias nyias thiab lub paj hlwb. Tsis muaj biotin ntev yuav ua rau cov plaub hau poob, tev, tawv nqaij qhuav, thiab lwm yam. Nws tuaj yeem ua rau lub cev tsis muaj zog.
Feem ntau cov khoom noj biotin yog khi rau cov protein, txawm tias qee qhov muaj nyob hauv daim ntawv dawb. Cov protein-bound daim ntawv ntawm biotin yog cleaved rau hauv biocytin thiab biotin oligopeptides thaum noj, uas tso tawm dawb biotin tom qab ua ntxiv los ntawm biotinidase hauv plab. Dawb biotin ces absorbed los ntawm cov hnyuv me thiab feem ntau khaws cia rau hauv daim siab. Biotin yog ib qho tseem ceeb hauv kev kho cov pa roj carbon dioxide los ntawm cov kab mob nyob.