Kev Nyab Xeeb Ntawm Bropol Preservatives

Qhov zoo ntawm Bropol Preservatives

Bropol preservatives yog ib chav kawm uas muaj txiaj ntsig zoo, dav -spectrum preservatives nrog cov txiaj ntsig tseem ceeb hauv qab no:

1. Bropol ntawm ib qho concentration ntawm ppm yog siv los tua cov kab mob;

2. Nws muaj ntau yam kab mob bactericidal, dav tua kab mob Gram-cov kab mob zoo, Gram- cov kab mob tsis zoo, cov poov xab, thiab cov pwm hauv ib puag ncig;

3. Nws muaj kev tswj tshwj xeeb rau cov kab mob Pseudomonas hauv dej, ua rau nws muaj zog ntxiv rau KATHON- hom tshuaj tua kab mob.

Qee qhov xwm txheej, Bropol preservatives tuaj yeem tso cov lej ntawm formaldehyde vim hydrolysis. Txawm li cas los xij, cov ntsiab lus formaldehyde tso tawm los ntawm Bropol preservatives nyob deb ntawm cov koob tshuaj uas yuav tsum tau ua rau cov kab mob bactericidal. Yog li ntawd, Bropol tsis yog qhov tseeb "formaldehyde- tso tawm" preservative. Cov kev cai cuam tshuam hauv Tebchaws Meskas thiab European Union pom zoo rau qhov no. Raws li thaum ntxov raws li EU pawg neeg ua hauj lwm lub rooj sib tham nyob rau hauv Lub ib hlis ntuj 2007, tag nrho cov neeg koom mus txog ib tug kev pom zoo hais tias cov bactericidal muaj peev xwm ntawm Bropol preservative yog tsis muaj feem xyuam rau formaldehyde; es, nws tso siab rau kev sib cuam tshuam ntawm Bropol molecule nws tus kheej thiab cov pab pawg sulfhydryl hauv cov qauv ntawm cov kab mob microbial, nrog rau kev tsim cov pa oxygen dawb radicals rau cov kab mob bactericidal. Raws li cov txheej txheem no, Bropol tsis koom nrog "formaldehyde-tso tawm" chav kawm ntawm cov kab mob bactericides. Tebchaws Asmeskas EPA (Lub Chaw Tiv Thaiv Ib puag ncig) kuj tau hais tias Bropol feem ntau tsis vam khom rau formaldehyde rau cov kab mob bactericidal.

Kev nyab xeeb ntawm Bropol Preservative
Qhov tseeb, Bropol preservative tsis yog "formaldehyde-tso tawm" chav kawm ntawm cov kab mob bactericides, thiab tus nqi ntawm formaldehyde tso tawm tsawg heev. Kev xaiv txoj kev tshawb nrhiav kom raug yog qhov tseem ceeb rau kev ntsuas qhov tseeb ntawm formaldehyde tso tawm los ntawm Bropol. Tam sim no, kev lag luam dav siv cov txheej txheem acetylacetone spectrophotometric rau kev tshawb pom zoo ntawm formaldehyde cov ntsiab lus. Txoj kev no yog ua raws li kev xaiv cov tshuaj tiv thaiv ntawm formaldehyde nrog Nash's reagent (acetylacetone) nyob rau hauv lub xub ntiag ntawm ammonium acetate, ua ib tug daj 2,6-dimethyl-3,5-diacetyl-1,4-dihydropyridine. Cov ntsiab lus formaldehyde yog ntsuas siv spectrophotometric.

Txawm li cas los xij, nws tsis yog formaldehyde nkaus xwb uas cuam tshuam nrog Nash reagent; Bropol preservative molecules kuj tuaj yeem ua rau tshuaj lom neeg, tsim cov tshuaj pleev xim uas cuam tshuam rau qhov kev sim zaum kawg. Yog li, txoj kev no tsis tsim nyog rau kev kuaj xyuas cov ntsiab lus formaldehyde hauv Bropol cov kev daws teeb meem. Ib yam li ntawd, cov kev sim tshuaj reagents siv ua ntej -kaum derivatization txoj kev kuj tuaj yeem cuam tshuam nrog Bropol molecules, ua rau yuam kev. Cov kev sim no tau pom tias tsis yog-kev tshaj tawm kev puas tsuaj-kaum derivatization txoj kev zoo dua rau kev kuaj xyuas cov ntsiab lus formaldehyde hauv Bropol preservative solutions. Piv txwv li, siab -kev ua tau zoo ua kua chromatography (HPLC) ncej-kem derivatization ua haujlwm los ntawm thawj zaug sib cais cov muaj peev xwm tam sim no formaldehyde nyob rau hauv cov qauv siv HPLC, reacting nws nrog ib tug derivatization reagent, thiab ces kuaj nws.

Puas yog cov lej ntawm formaldehyde tsim los ntawm Bropol preservatives vim hydrolysis cuam tshuam rau cov khoom lag luam? Qhov tseeb, formaldehyde muaj nyob rau hauv tib neeg thiab ntau yam khoom noj. Qhov tsawg dua 1 ppm formaldehyde uas tsim los ntawm hydrolysis ntawm Bropol yog qis dua cov ntsiab lus formaldehyde hauv cov khoom noj no. Lub caij no, Tuam Tshoj tus "Cosmetic Hygiene Standard (2007)" qhia tias bropol tuaj yeem siv los ua kev txwv tsis pub siv tshuaj pleev ib ce (qhov ntau npaum li cas yuav tsum tsawg dua 0.1%, thiab kev tsim cov nitrosamines yuav tsum raug zam), uas tseem ua pov thawj kev nyab xeeb ntawm bropol hauv cov khoom siv tshuaj ntxuav tes kom raug.