Ugbu a, ọtụtụ kemịkalụihe nchekwaA na-eji ya n'ahịa anyị bụ benzoic acid na nnu sodium ya, sorbic acid na nnu potassium ya, propionic acid na nnu ya, p-hydroxybenzoic acid esters (nipagin ester), dehydroacetic acid na nnu sodium ya, sodium lactate, fumaric acid, wdg.
1. Benzoic acid na sodium nnu
Benzoic acid na nnu sodium ya bụ otu n'ime ihe ndị a na-ejikarị eme iheihe nchekwana ụlọ ọrụ nhazi nri nke China, a na-ejikarị echekwa nri mmiri mmiri dị ka ihe ọṅụṅụ (dịka ihe ọṅụṅụ dị nro, ihe ọṅụṅụ mkpụrụ osisi, soy sauce, nri mkpọ, mmanya, wdg). Benzoic acid bụ lipophilic ma na-abanye ngwa ngwa site na akpụkpọ ahụ cell wee banye n'ime ahụ sel, si otú a na-etinye aka na permeability nke cell membranes nke microorganisms na igbochi nnabata nke amino acid site na cell membranes. The benzoic acid molecule nke na-abanye n'ime ahụ cell, ionizes ihe alkaline ihe dị na cell, na nwere ike igbochi ọrụ nke cell iku ume enzyme usoro, na nwere ike ọrụ na igbochi acetyl coenzyme A condensation mmeghachi omume, ka na-egwu preservative mmetụta na nri.
2 Sorbic acid na nnu potassium ya
Sorbic acid (potassium sorbate) bụ ihe nchekwa a na-ejikarị eme ihe na ọtụtụ mba. Sorbic acid bụ unsaturated fatty acid, usoro mgbochi ya bụ iji njikọ nke abụọ ya na mkpụrụ ndụ microbial na enzyme nke otu sulfhydryl jikọtara iji mepụta njikọ nke covalent, nke mere na ọ na-efunahụ ọrụ ma mebie usoro enzyme. Tụkwasị na nke ahụ, sorbic acid nwekwara ike igbochi ọrụ nnyefe, dị ka ịnyefe oxygen site na cytochrome C, na ọrụ nke cell membrane nyefe ume, na-egbochi mgbasa nke microorganisms, iji nweta nzube nke corrosion.
3 Propionic acid na nnu ya
Propionic acid bụ mono-acid, mmiri mmanụ na-enweghị agba. Ọ bụ iji gbochie njikọ microbial nke β-alanine na mmetụta antibacterial. Propionic acid salts bụ tumadi sodium propionate na calcium propionate, ha nwere otu ihe nchekwa usoro, ghọọ propionic acid n'ime ahụ, monomeric propionic acid ụmụ irighiri nwere ike na-etolite a elu osmotic mgbali n'èzí ebu mkpụrụ ndụ, nke mere na ebu cell akpịrị ịkpọ nkụ, ọnwụ nke mmeputakwa, na nwekwara ike banye n'ime ebu cell mgbidi, gbochie intracellular.
4 paraben esters (nipagin ester)
Paraben esters bụ methyl paraben, ethyl paraben, propyl paraben, isopropyl paraben, butyl paraben, isobutyl paraben, heptyl paraben, wdg The inhibition usoro nke p-hydroxybenzoic acid esters bụ: microbial cell akụkụ okuku ume na usoro na electron nyefe enzyme usoro ọrụ na-egbochi, na ike ibibi Ọdịdị nke microbial cell akpụkpọ ahụ, otú ahụ ka mgbochi na-arụ ọrụ nke microbial cell akpụkpọ ahụ.
5 Dehydroacetic acid na nnu sodium ya
Dehydroacetic acid, molecular usoro C8H8O4 ya na sodium nnu na-acha ọcha ma ọ bụ ìhè odo crystalline ntụ ntụ, nwere ike antibacterial ikike, karịsịa ike antibacterial ikike nke ebu na yist. Ọ bụ ihe nchekwa acidic na nke na-adịghị arụ ọrụ maka nri na-anọpụ iche. Ọ kwụsiri ike na ìhè na ikpo ọkụ, na-agbada ruo acetic acid na ngwọta mmiri, ọ dịghịkwa egbu egbu n'ahụ mmadụ. Ọ bụ ihe nchekwa sara mbara nke a na-ejikwa ya maka ichekwa anụ, azụ̀, akwụkwọ nri, mkpụrụ osisi, ihe ọṅụṅụ, achịcha achịcha, wdg.
6 sodium lactate
Mmiri na-enweghị agba ma ọ bụ ubé edo edo na-enweghị isi, enweghị isi, nnu dị ntakịrị na ilu, miscible na mmiri, ethanol, glycerin. N'ozuzu mkpokọta bụ 60% -80%, na kacha ojiji bụ 30g / KG maka 60% ịta ... Sodium lactate bụ ọhụrụ ụdị preservative na nchekwa gị n'ụlọnga, tumadi etinyere anụ na anụ ọkụkọ ngwaahịa, nke nwere ike inhibitory mmetụta na anụ nri nje bacteria. A na-etinyekarị ya na anụ a ṅara n'ọkụ, ham, soseji, ọkụkọ, ọbọgwụ na ngwaahịa anụ ọkụkọ na ihendori na ngwaahịa brine. Usoro ntụaka maka ichekwa ịdị ọhụrụ na ngwaahịa anụ: sodium lactate: 2%, sodium dehydroacetate 0.2%.
7 Dimethyl fumarate
Ọ bụ ụdị mgbochi ebu ọhụrụihe nchekwanke a na-emepe emepe nke ọma n'ụlọ na ná mba ọzọ, nke nwere ike igbochi ihe karịrị ụdị 30 nke ebu na yists, na arụmọrụ antibacterial ya adịghị emetụta uru pH, na uru nke arụmọrụ dị elu na nnukwu ụdị dị iche iche, nchekwa dị elu na ọnụ ala dị ala. Ọrụ ya nke antibacterial na antiseptik zuru oke dị elu, yana ọrụ ndu siri ike. Ọ nwere ihe ndị na-eme fumigant n'ihi sublimation, ya mere ọ nwere ọrụ abụọ nke kọntaktị sterilization na fumigation sterilization. Obere toxicity, n'ime ahụ mmadụ ngwa ngwa n'ime nkịtị components nke mmadụ metabolism fumaric acid, ngwa nke ọma repeatability.
Oge nzipu: Eprel-01-2022