Dab tsi yog qhov tseem ceeb ntawm citric acid

Citric acid yog qhov loj tshaj plaws organic acid soluble nyob rau hauv dej thiab yog ib tug natural preservative thiab zaub mov additive. Raws li cov ntsiab lus dej, nws tuaj yeem muab faib ua citric acid monohydrate thiab citric acid anhydrous. Vim nws lub cev muaj zog, cov khoom siv tshuaj lom neeg thiab cov khoom siv derivative, nws yog cov organic acid uas tseem ceeb tshaj plaws hauv cov zaub mov, kev kho mob, tshuaj thiab lwm yam lag luam. Yog li, dab tsi yog cov haujlwm tshwj xeeb thiab kev siv ntawm citric acid?

1. Cov nyhuv ntawm citric acid

Citric acid feem ntau yog siv los ua tus neeg sawv cev acidifying, hnyav, tsis muaj, antioxidant, deodorant, tsw enhancer, gelling tus neeg sawv cev, toner, thiab lwm yam. Tsis tas li ntawd, citric acid kuj tuaj yeem cuam tshuam cov kab mob, tiv thaiv xim, txhim kho saj. thiab txhawb kev hloov pauv ntawm sucrose. Citric acid kuj muaj cov nyhuv chelate thiab tuaj yeem tshem tawm qee cov hlau tsis zoo. Citric acid tuaj yeem tiv thaiv oxidation los ntawm enzymatic thiab hlau catalysis, yog li tiv thaiv kom tsis txhob muaj xim thiab tsw hloov hauv cov txiv hmab txiv ntoo ceev.

2.Siv citric acid

A. Rau kev lag luam zaub mov

Vim hais tias citric acid muaj ib tug me me thiab refreshing qaub saj, los ntawm ib tug zaub mov additive foundations, nws yog tsuas yog siv nyob rau hauv carbonated dej qab zib, kua txiv hmab txiv ntoo dej qab zib, lactic acid dej qab zib thiab lwm yam dej qab zib thiab pickled zaub mov, thiab nws qhov kev thov cuam tshuam los ntawm kev hloov huab cua raws caij nyoog. Citric acid suav txog li 2/3 ntawm tag nrho cov kua qaub saj. Ntxiv citric acid rau cov txiv hmab txiv ntoo hauv cov kaus poom tuaj yeem tswj tau lossis txhim kho saj ntawm cov txiv hmab txiv ntoo, ua kom cov kua qaub ntawm qee cov txiv hmab txiv ntoo uas tsis muaj kua qaub (pH qis), ua kom tsis muaj zog ntawm cov kab mob thiab tiv thaiv lawv txoj kev loj hlob, thiab tiv thaiv cov kab mob los ntawm kev sib npaug thiab tua qis. kua qaub kua txiv hmab txiv ntoo. Ntxiv citric acid rau khoom qab zib raws li ib qho kua qaub yog ib qho yooj yim rau kev koom tes nrog cov txiv hmab txiv ntoo tsw. Kev siv citric acid hauv cov khoom siv gel, jams thiab jellies tuaj yeem txo qhov tsis zoo ntawm pectin kom cov hydrogen daim ntawv cog lus ntawm pectin molecules tuaj yeem txuas rau gel. Thaum ua cov zaub hauv kaus poom, qee cov zaub muaj cov tshuaj tiv thaiv alkaline. Siv citric acid raws li pH adjuster tsis tau tsuas yog ua lub luag hauj lwm ntawm seasoning tab sis kuj tswj nws zoo. Citric acid muaj chelating thiab pH-regulating cov khoom uas tuaj yeem txhim kho cov txiaj ntsig ntawm antioxidants, inhibit enzyme kev ua haujlwm, thiab ua rau lub neej ntev ntawm cov khoom noj khoom haus hauv kev ua zaub mov khov.

Citric acid monohydrate feem ntau yog siv los ua acidic flavoring tus neeg sawv cev hauv cov dej qab zib, kua txiv hmab txiv ntoo, jams, txiv hmab txiv ntoo qab zib, thiab khaws cia, thiab ua antioxidant hauv cov roj noj. Nyob rau tib lub sijhawm, nws tuaj yeem txhim kho cov txiaj ntsig ntawm cov khoom noj, ua kom qab los noj mov, thiab txhawb kev zom zaub mov thiab nqus calcium thiab phosphorus hauv lub cev.

Anhydrous citric acid yog siv dav hauv cov ntsuj plig. Citric acid ntsev, xws li calcium citrate thiab hlau citrate, yog cov fortifiers uas yuav tsum tau ntxiv rau ib co zaub mov nrog rau calcium thiab hlau ions. Esters ntawm citric acid, xws li triethyl citrate, tuaj yeem siv los ua cov yas tsis muaj tshuaj lom nyob rau hauv kev tsim cov yas zaj duab xis rau ntim khoom noj, thiab ua cov kua qaub thiab preservative hauv dej haus thiab zaub mov kev lag luam.

B. Rau kev kho dej kev lag luam

Citric acid tuaj yeem ua kom tsis muaj menyuam thiab tswj cov pH tus nqi ntawm cov dej thaum lim dej. Lub acidity ntawm citric acid tuaj yeem hloov pH tus nqi ntawm cov hlwb thiab cuam tshuam rau cov metabolism hauv cov kab mob. High concentrations ntawm acidic hydrogen ions kuj tuaj yeem hloov kho cov kab mob lom ntawm cov kab mob thiab ua rau lub hlwb puas.

C.Rau tshuaj reagent thiab ntxuav

Citric acid tuaj yeem siv los ua cov tshuaj ntsuam xyuas reagent hauv cov cuab yeej siv tshuaj, ua ib qho kev sim reagent, chromatographic tsom xam reagent thiab biochemical reagent; Nws yog siv los ua ib tus neeg sawv cev thiab cov npog ntsej muag los npaj cov tshuaj tsis haum.

Kev siv cov citric acid los yog citrate ua cov tshuaj ntxuav tes tuaj yeem txhim kho kev ua haujlwm ntawm cov tshuaj detergents, sai sai precipitate hlau ions, tiv thaiv kev rov txuas ntawm cov pa paug rau ntaub, tswj cov alkalinity tsim nyog rau kev ntxuav, disperse thiab tshem tawm cov av thiab tshauv, thiab txhim kho kev ua haujlwm. . surfactants.

Citric acid kuj tuaj yeem ua rau hauv cov khoom tsis muaj formaldehyde los tiv thaiv crease rau kev ua tiav cov paj rwb huv.

D. Rau tshuaj pleev ib ce

Citric acid tuaj yeem tiv thaiv thiab tshem tawm cov tawv nqaij pigmentation. Citric acid yog ib hom txiv hmab txiv ntoo acid uas feem ntau yog siv los ua kom cov cutin rov ua dua tshiab thiab feem ntau yog siv rau hauv cov tshuaj pleev ib ce, tshuaj pleev, tshuaj zawv plaub hau, tshuaj pleev ib ce, tshuaj pleev ib ce, tshuaj pleev ib ce, khoom siv pob txuv, thiab lwm yam. thinning pores, dissolving pob txuv, thiab lwm yam.

E. Tiv thaiv ib puag ncig

Tuam Tshoj yog nplua nuj nyob rau hauv cov thee peev txheej, uas ua rau nws lub zog ntau. Txawm li cas los xij, tsis muaj kev siv thev naus laus zis zoo rau flue gas desulphurization, uas ua rau muaj SO2 cov pa phem ntawm huab cua. Tam sim no, Tuam Tshoj lub xyoo SO2 emissions tau mus txog ze li ntawm 40 lab tons. Muaj ib qho kev xav tau ceev los tshawb nrhiav kev siv tshuab desulfurization zoo. Nrog rau qhov tsis muaj vapor siab, tsis muaj tshuaj lom, muaj zog tshuaj lom neeg thiab siab SO2 nqus tus nqi, citric acid sodium citrate tsis yog tshuaj desulfurizing absorbent ntawm kev loj hlob zoo.

F. Rau tsiaj txhu additives

Ntxiv citric acid rau piglet pub tuaj yeem ua kom qhov yuag nrawm, txhim kho kev siv khoom noj los ntawm 5-10% thiab nce litter loj hauv cov qoob loo. Ntxiv 1-2% citric acid rau kev noj zaub mov ntawm cov neeg cog qoob loo thiab cov npua ua tiav tuaj yeem ua kom nce txhua hnub, txo cov khoom noj rau cov nqaij, txhim kho cov protein digestibility, txo cov rog rov qab, txhim kho nqaij zoo thiab cov yam ntxwv ntawm lub cev.

D. Rau kom tsis muaj menyuam

Kev sib xyaw ua ke ntawm citric acid thiab 80 degrees muaj txiaj ntsig zoo rau kev puas tsuaj ntawm cov kab mob spores thiab tuaj yeem tua cov kab mob kis kab mob hauv lub tshuab hemodialysis. Txiv qaub, uas nyiam lub koob npe nrov li "tus huab tais ntawm Western zaub mov", muaj cov kab mob bactericidal zoo thiab muaj txiaj ntsig zoo rau kev noj qab haus huv. Sib nrug los ntawm aroma ntawm txiv qaub, tib neeg yeej ib txwm nyiam siv nws los npaj cov tais diav txias. Tsis tsuas yog nws qab thiab qab ntxiag, tab sis nws kuj tuaj yeem txhim kho koj txoj kev noj qab haus huv, xws li tsis ntev los no nrov heev "nqaij qaib nrog txiv qaub."

H. Rau tshuaj

Citric acid, tseem hu ua citric acid, yuav tsum muaj calcium ions thaum lub sij hawm tsim ntawm prothrombin activator thiab cov txheej txheem coagulation tom ntej. Citrate ion thiab calcium ion tuaj yeem tsim cov txheej txheem soluble uas nyuaj rau kev sib cais, yog li txo cov concentration ntawm calcium ion hauv cov ntshav thiab tiv thaiv cov ntshav txhaws. Nws yog siv los ua ib qho hauv vitro anticoagulant hauv kev muab ntshav los yog tshuaj tiv thaiv kab mob hauv cov ntshav kuaj ntshav.

3. Ceev faj

A. Muaj kev phom sij

Kev phom sij rau kev noj qab haus huv: concentrated citric acid tov yog irritating rau mucous daim nyias nyias. Thaum siv industrially, kev sib cuag yuav ua rau eczema;

Explosion Hazard: Citric acid yog nplaim taws heev. Hmoov thiab huab cua tuaj yeem tsim cov khoom sib tov sib xyaw uas tuaj yeem ua rau hluav taws kub thiab tawg yog tias raug nplaim taws, kub kub lossis tiv tauj nrog tus neeg sawv cev oxidizing.

B. Cia tej yam kev mob

Citric acid monohydrate poob nws cov dej crystalline hauv huab cua qhuav lossis thaum cua sov txog li 40 degrees, thiab evaporates me ntsis hauv cov huab cua ntub. Ib dilute aqueous daws ntawm citric acid tuaj yeem ferment thaum so. Yog li ntawd, cov khoom monohydrates los yog cov tshuaj anhydrous yuav tsum tau muab cia rau hauv cov thawv airtight hauv qhov chaw txias, qhuav.