Propionic acid E280

Propionic acid yog ib cov zaub mov additive, ib tug preservative. Zoo li ib tug kua oily daj ntseg yellowish los yog tsis muaj xws general.

Propionic acid muaj ib tug qaub saj thiab pungent tsw. Cov tshuaj mis ntawm lub substance - S2N5SOON.

Kev npaj ntawm propionic acid

E280 tshuaj nyob rau hauv cov xwm uas muaj nyob hauv ib cov roj thiab raws li ib tug los ntawm-cov khoom nyob rau hauv lub fermentative neeg nroj tsuag. Thaum lub sij hawm fermentation ntawm carbohydrates kuj yog tsim propionic acid. Muab ib lom yog cov metabolic decomposition ntawm fatty acids uas muaj cov pa roj carbon atoms nyob rau hauv ib tug khib tooj, thiab expansion ntawm ib tug neeg amino acids.

Cov kab mob los ntawm cov genus Propioni kab mob lawm cov ntaub ntawv uas raws li ib tug kawg khoom ntawm co metabolism. Txij li thaum cov kab mob no feem ntau tam sim no nyob rau hauv lub plab ntawm ruminants, tej yam cheese muaj ib txog kev ntxhiab.

Industrially, propionic acid yog tsim nyob rau hauv lub carbonylation ntawm ethylene Reppe cov tshuaj tiv thaiv, cov catalytic oxidation ntawm (nyob rau hauv lub xub ntiag ntawm manganese ions los yog cobalt) propionaldehyde. Tsis tas li ntawd, ib yam khoom uas ua raws li ib tug byproduct nyob rau hauv tus txheej txheem ntawm cov roj theem oxidation ntawm C4 -C10 hydrocarbons.

Yav tas los propionic acid twb cais raws li ib tug byproduct thaum lub sij hawm ntau lawm ntawm acetic acid. Txawm li cas los, niaj hnub siv tshuab nyob rau hauv qhov siv thiab ua tus tom kawg raug thawb lub qub txoj kev cais ib tug preservative mus rau hauv lub keeb kwm yav dhau.

Propionic acid yog tso cai rau siv nyob rau hauv daim ntawv ntawm ib tug preservative nyob rau hauv ib tug npaum li ntawm mus txog peb grams ib kilo cheese (fused) cov khoom raws li zoo raws li cov khoom ua los ntawm lawv, ua ke nrog sorbic acid, nws ntsev los yog ib lub zuj zus. Nws yog tseem tau siv ntawm ib tug preservative nyob rau hauv cov nplej (fej hlais), rye rau heev cia, thiab mov ci nrog tsis muaj zog tus nqi. Propionic acid yog tso cai rau siv nyob rau hauv pastry khoom, khob noom cookie-ci.

Los ntawm inhibiting (deceleration) ntawm tej yam enzymes preservative yog tau muab uas tsis yog-kev inhibitory nyhuv rau qhov xwm ntawm ntau hom ntawm cov kab mob, pwm thiab cov poov xab, ib co tsiaj yuav nqus los yog ua nws.

Tswj tus nqi ntawm cov propionic acid siv yog tsis tau yus. Qhov no yog vim lub fact tias nyob rau hauv ib tug concentration ntawm 0.3% preservative ho alters lub saj thiab tsis hnov tsw ntawm qhov khoom. Nyob rau hauv no hais txog, nyob rau hauv cov zaub mov kev lag luam propionic acid yog siv nyob rau hauv daim ntawv ntawm cov calcium propionate thiab sodium suab xwb thaum lub sij hawm preservation ntawm bakery cov khoom.

Preservative E280 muaj peev xwm sawv ntawm inhibiting (qeeb) txoj kev loj hlob ntawm kab mob ntshiab thiab mis nyuj haus. Nyob rau hauv no hais txog, propionic acid yog siv nyob rau hauv canning whey nrog ib tug saib kom cia thiab tsheb thauj mus los. Ntxiv mus, qhov no yam khoom uas yog siv los tiv thaiv lub grain ntawm excessively ntub pwm (yog hais tias tsis txaus haib dryers).

Daim ntawv thov ntawm propionic acid yog heev nyob rau hauv lwm yam sectors. Yog li ntawd, ib tug preservative siv nyob rau hauv qhuav ntawm pharmaceuticals (Fenobolina, ibuprofen thiab lwm tus), uas muaj ntxhiab tshuaj (geranyl propionate, phenylpropionate , thiab lwm tus) thiab yas (polivinilpropionata) vinilplastifikatorov, hnyav (propyl propionate, propyl propionate thiab lwm tus).

Qhov loj txaus ntshai uas tej zaum yuav E280 - tshuaj Burns yuav tshwm sim thaum uas soj ntsuam nrog concentrated acid. Ib tug xov tooj ntawm cov kev tshawb fawb tau pom hais tias tus preservative-toxic, carcinogenic, thiab muaj peev xwm adversely cuam tshuam lub tsev me nyuam hauv nruab nrog cev.

Nyob rau hauv lub cev, muaj ib tug sai oxidation propionic acid feem yog nyob rau hauv daim ntawv ntawm cov pa roj carbon dioxide nyob rau hauv lub Krebs voj voog.