Protein Muaj pes tsawg leeg: Yuav ua li cas peb paub txog nws?

Nws yog lub npe hu hais tias cov nqaijrog yog tsim nyog thiab qhov tseem ceeb ntawm tej sia. Nws yog lawv uas yog lub luag hauj lwm rau cov metabolism hauv thiab lub zog hloov dua siab tshiab, uas yog inextricably txuas rau zoo tag nrho cov tseem ceeb heev muaj dab. Qhuav teeb meem loj feem ntau ntawm ntaub so ntswg thiab kabmob ntawm cov tsiaj thiab tib neeg, thiab ntau tshaj 50% ntawm tag nrho cov kab mob, mas muaj li ntawm cov nqaijrog (40% mus rau 50%). Nyob rau hauv cov nroj tsuag nceeg vaj lawv tej hnyav piv rau qhov nruab nrab tus nqi yog tsawg, thiab cov tsiaj - ntau. Txawm li cas los, cov tshuaj nyob tus yeees ntawm cov protein rau ntau tus neeg yog tseem tsis paub hais tias. Cia peb ib zaug ntxiv nco qab dab tsi yog sab hauv cov high ntuj polymers.

protein Muaj pes tsawg leeg

Qhov no tshuaj nyob rau nruab nrab muaj txog 50-55% carbon, 15-17% nitrogen, 21-23% oxygen, 0.3-2.5% sulfur. Nyob rau hauv tas li ntawd mus rau cov pib kawm, tej zaum nyob rau hauv cov nqaijrog xws li hais tias kev faib ua feem yog tsawg heev li. Saum toj no tag nrho, qhov no phosphorus, hlau, iodine, tooj liab thiab lwm yam micro- thiab macronutrients. Curiously, lub nitrogen concentration muaj lub siab tshaj plaws regularity, thaum cov ntsiab lus ntawm lwm yam tseem ceeb Cheebtsam tej zaum yuav txawv. Nyob rau hauv piav txog cov protein, tas nws yuav tsum tau muab sau tseg tias nws yog ib qho lus polymer ua ntawm amino acid residues nyob rau hauv cov mis ntawm uas cov dej daws nyob rau nruab nrab pH nyob rau hauv lub feem ntau kev daim ntawv yuav sau li NH3 + CHRCOO-.

Ntawm cov "tsev blocks" yog koom los ntawm ib tug amide daim ntawv cog lus nruab nrab ntawm cov carboxyl thiab amine pawg. Txhua yam nyob rau hauv cov xwm qhia txog phav phav ntawm txawv proteins. Qhov no hauv chav kawm ntawv yog cov tshuaj, enzymes, ntau cov tshuaj hormones thiab rau lwm yam active lom tshuaj. Kuj ceeb tias, txawm tag nrho cov no muaj ntau haiv neeg protein muaj pes tsawg leeg yuav muaj xws li tsis ntau tshaj 30 ntau amino acids, 20 uas nrov tshaj plaws. Nyob rau hauv tib neeg, lawv pom xwb 22, tus so yog tsuas yog tsis absorbed thiab tas tawm. Yim amino acids ntawm no pab pawg neeg yog xav tau indispensable. Nws leucine, methionine, isoleucine, lysine, phenylalanine, tryptophan, threonine thiab valine. Lawv yog cov peb lub cev tsis tau ke lawv tus kheej, tab sis vim hais tias ntawm lawv cov yuav tsum tau kom tsawg los ntawm cov sab nraum. Qhov seem (taurine, arginine, glycine, carnitine, asparagine, histidine, cysteine, Glutamine, alanine, ornithine, tyrosine, proline, serine, cystine), nws yuav ua tau kom tsim nws tus kheej. Yog li ntawd, cov amino acids yog hais tias yuav interchangeable pab pawg neeg. Nyob ntawm seb cov thawj pab pawg neeg ntawm cov protein, raws li tau zoo raws li nws cov degree ntawm haum los ntawm lub cev, lub protein yog muab faib mus rau hauv high-qib thiab ua tsis tau zoo. Qhov nruab nrab txhua hnub noj tus nqi ntawm cov tshuaj rau tib neeg cov lus dag nyob rau hauv ntau ntawm 1 mus rau 2 grams ib kilogram ntawm lub cev hnyav. Nyob rau tib lub sij hawm sedentary neeg yuav tsum tau lo rau hauv lub qis kawg ntawm no ntau yam, thiab sporstmenov - sab saum toj.

Yuav ua li cas mus kawm cov qauv ntawm cov protein

Rau txoj kev tshawb no ntawm cov tshuaj mas yog siv hydrolysis txoj kev. Cov kev hem protein ntawm kev txaus siab yog rhuab nrog nta hydrochloric acid (6.10 mol / liter) nyob rau hauv ib tug kub ntawm los ntawm 100 mus 1100? C? C. Raws li ib tug tshwm sim, nws tawg ua me me mus rau hauv ib tug sib tov ntawm cov amino acids uas yog twb muab ib tug neeg amino acids. Tam sim no, rau lub quantitative tsom xam ntawm lub xeem protein siv daim ntawv, thiab ion pauv chromatography. Muaj txawm tias ib tug tshwj xeeb automatic analyzers uas yog ib qho yooj yim los txhais raws nraim uas amino acids yog ua los ntawm lwj.