Okwangoku, uninzi lweekhemikhaliizithinteliEzisetyenziswa kwimarike yethu yi-benzoic acid kunye netyuwa yayo yesodium, i-sorbic acid kunye netyuwa yayo yepotassium, i-propionic acid kunye netyuwa yayo, ii-esters ze-p-hydroxybenzoic acid (i-nipagin ester), i-dehydroacetic acid kunye netyuwa yayo yesodium, i-sodium lactate, i-fumaric acid, njl.
1. I-Benzoic acid kunye netyuwa yayo yesodium
I-Benzoic acid kunye netyuwa yayo yesodium yenye yezona zisetyenziswa kakhuluizithintelikwishishini lokulungisa ukutya eTshayina, esetyenziselwa kakhulu ukugcina ukutya okumanzi okufana neziselo (umz. iziselo ezibandayo, iijusi zeziqhamo, isosi yesoya, ukutya okusemathinini, iwayini, njl.njl.). I-Benzoic acid iyakwazi ukukhupha iimolekyuli kwaye ingena lula kwi-membrane yeseli ize ingene emzimbeni weseli, ngaloo ndlela iphazamisana nokuphuma kwe-membrane yeseli yee-microorganisms kwaye ithintele ukufunxwa kwee-amino acids yi-membrane yeseli. Imolekyuli ye-benzoic acid engena emzimbeni weseli, i-ionize izinto ze-alkaline kwiseli, kwaye inokuthintela umsebenzi wenkqubo ye-enzyme yokuphefumla yeseli, kwaye inendima enamandla ekuthinteleni i-acetyl coenzyme A condensation reaction, ukuze idlale isiphumo sokugcina ukutya.
2 I-Sorbic acid kunye netyuwa yayo ye-potassium
I-Sorbic acid (i-potassium sorbate) yeyona nto isetyenziswa kakhulu njengesigcini-zintsholongwane kwaye isetyenziswa kumazwe amaninzi. I-Sorbic acid yi-unsaturated fatty acid, indlela yayo yokuthintela kukusebenzisa ii-double bond zayo kunye nee-microbial cells kwi-enzyme yeqela le-sulfhydryl ezidityanisiweyo ukwenza i-covalent bond, ukuze ilahlekelwe ngumsebenzi kwaye itshabalalise inkqubo ye-enzyme. Ukongeza, i-sorbic acid inokuphazamisana nomsebenzi wokudlulisa, njengokudluliselwa kweoksijini yi-cytochrome C, kunye nomsebenzi wokudluliselwa kwamandla kwi-membrane yeseli, ukuthintela ukwanda kwee-microorganisms, ukuze kufezekiswe injongo yokubola.
3 I-Propionic acid kunye netyuwa yayo
I-Propionic acid lulwelo olunamafutha oluyi-mono-acid, olungenambala. Lukuthintela ukwenziwa kweentsholongwane ze-β-alanine kunye nefuthe le-antibacterial. Iityuwa ze-propionic acid ikakhulu ziyi-sodium propionate kunye ne-calcium propionate, zinendlela efanayo yokugcina izinto, ziguqulwa zibe yi-propionic acid emzimbeni, iimolekyuli ze-monomeric propionic acid zinokwenza uxinzelelo oluphezulu lwe-osmotic ngaphandle kweeseli zesikhunta, ukuze i-mold cell iphelelwe ngamanzi, ilahlekelwe kukuzala, kwaye ikwazi ukungena eludongeni lweseli yesikhunta, ithintele umsebenzi wangaphakathi kweseli.
4 paraben esters (nipagin ester)
Ii-esters zeParaben yi-methyl paraben, i-ethyl paraben, i-propyl paraben, i-isopropyl paraben, i-butyl paraben, i-isobutyl paraben, i-heptyl paraben, njl. Indlela yokuthintela ii-esters ze-p-hydroxybenzoic acid yile: inkqubo yokuphefumla kweeseli ze-microbial kunye nomsebenzi wenkqubo ye-enzyme yokudlulisa i-electron uyathintelwa, kwaye unokutshabalalisa isakhiwo se-membrane yeseli ye-microbial, ukuze idlale indima ye-antiseptic.
5 I-Dehydroacetic acid kunye netyuwa yayo yesodium
I-Dehydroacetic acid, i-molecular formula C8H8O4 yona kunye netyuwa yayo yesodium ziyi-crystalline powder emhlophe okanye etyheli ekhanyayo, inamandla okulwa neentsholongwane, ingakumbi amandla okulwa neentsholongwane okubangelwa kukungunda kunye nemvubelo. Sisigcina-zintsholongwane esinobuthi kwaye asisebenzi ekutyeni okungathathi cala. Sihlala siqinile ekukhanyeni nasekufudumaleni, siyabola sibe yi-acetic acid kwisisombululo samanzi, kwaye asinabungozi emzimbeni womntu. Sisigcina-zintsholongwane esibanzi kwaye sisetyenziswa kakhulu ekugcineni inyama, intlanzi, imifuno, iziqhamo, iziselo, iipastries, njl.njl.
6 I-sodium lactate
Ulwelo olungenambala okanye olutyheli kancinci, olungenavumba, olunetyuwa kancinci nolukrakra, oluxutywa emanzini, i-ethanol, i-glycerin. Uxinzelelo oluqhelekileyo yi-60%-80%, kwaye umda wokusetyenziswa ophezulu yi-30g/KG kwi-60% yoxinzelelo... I-Sodium lactate luhlobo olutsha lwearhente yokugcina nokugcina, esetyenziswa kakhulu kwimveliso yenyama kunye neenkukhu, enefuthe elinamandla lokuthintela iintsholongwane zokutya kwenyama. Isetyenziswa kakhulu kwinyama eyosiweyo, iham, isoseji, inkukhu, idada kunye neemveliso zeenkukhu kunye neemveliso zesosi kunye ne-brine. Ifomyula yesalathiso yokugcina ubutsha kwiimveliso zenyama: i-sodium lactate: 2%, i-sodium dehydroacetate 0.2%.
7 I-Dimethyl fumarate
Luhlobo olutsha lokulwa nokungundaisithintelileyo iphuhliswe ngamandla ekhaya nakwamanye amazwe, enokuthintela iintlobo ezingaphezu kwama-30 zesikhunta kunye negwele, kwaye ukusebenza kwayo okulwa neentsholongwane akuchaphazeleki lixabiso le-pH, kunye neenzuzo zokusebenza kakuhle kunye nobubanzi, ukhuseleko oluphezulu kunye nexabiso eliphantsi. Ukusebenza kwayo okubanzi kokulwa neentsholongwane kunye nokulwa neentsholongwane kuphezulu, kunye nomsebenzi onamandla webhayoloji. Ineempawu zokufutha ngenxa ye-sublimation, ngoko ke inendima ephindwe kabini yokubulala iintsholongwane kunye nokubulala iintsholongwane. Ityhefu ephantsi, ingena emzimbeni womntu ngokukhawuleza iye kwiindawo eziqhelekileyo zemetabolism yomntu i-fumaric acid, ukusetyenziswa kwayo kuphindaphindeka kakuhle.
Ixesha lokuthumela: Epreli-01-2022