Kedu ụdị ihe nchekwa kemịkalụ a na-ejikarị eme ihe?

Ugbu a, ọtụtụ n'ime kemịkalụ dị na yaihe 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. Asịd Benzoic na nnu sodium ya
Acid Benzoic na nnu sodium ya bụ otu n'ime ihe ndị a na-ejikarị eme iheihe nchekwan'ụlọ ọrụ nhazi nri nke China, a na-ejikarị ya echekwa nri mmiri dị ka ihe ọṅụṅụ (dịka ihe ọṅụṅụ dị nro, ihe ọṅụṅụ mkpụrụ osisi, ihendori soy, nri mkpọ, mmanya, wdg). Acid Benzoic dị mfe ma na-abanye n'ime akpụkpọ ahụ sel ma banye n'ahụ sel, si otú a na-egbochi ikike nke akpụkpọ ahụ sel nke microorganisms ma na-egbochi nnabata nke amino acid site na akpụkpọ ahụ sel. Mkpụrụ ndụ benzoic acid nke na-abanye n'ime ahụ sel, na-eme ka ihe alkaline dị na sel dị ionize, ma nwee ike igbochi ọrụ nke sistemụ enzyme iku ume sel, ma nwee ọrụ siri ike n'igbochi mmeghachi omume condensation acetyl coenzyme A, ka o wee nwee ike ichekwa nri.
2 Sorbic acid na nnu potassium ya
A na-ejikarị Sorbic acid (potassium sorbate) eme ihe n'ọtụtụ mba, a na-ejikwa ya eme ihe n'ọtụtụ mba. Sorbic acid bụ abụba na-enweghị afọ ojuju, usoro mgbochi ya bụ iji njikọ abụọ ya na mkpụrụ ndụ nje dị n'ime enzyme nke otu sulfhydryl jikọtara ọnụ iji mepụta njikọ covalent, ka ọ ghara ịrụ ọrụ ma bibie sistemụ enzyme. Na mgbakwunye, sorbic acid nwekwara ike igbochi ọrụ mbufe, dị ka nnyefe oxygen site na cytochrome C, na ọrụ nke mbufe ike nke membrane cell, na-egbochi mmụba nke nje bacteria, iji mezuo ebumnuche nke ire ere.
3 Propionic acid na nnu ya
Propionic acid bụ mono-acid, mmiri mmanụ na-enweghị agba. Ọ bụ iji gbochie njikọ nje bacteria nke β-alanine na mmetụta nje bacteria. Nnu Propionic acid bụ sodium propionate na calcium propionate, ha nwere otu usoro nchekwa ahụ, a na-agbanwe ha ka ha bụrụ propionic acid n'ahụ, molekul monomeric propionic acid nwere ike ịmepụta nrụgide osmotic dị elu n'èzí mkpụrụ ndụ ebu, nke mere na mkpụrụ ndụ ebu anaghị amị amị, enweghị ike ịmụpụta ha, ma nwee ike ịbanye n'ime mgbidi mkpụrụ ndụ ebu, gbochie ọrụ intracellular.
4 paraben esters (pagin ester)
Paraben esters bụ methyl paraben, ethyl paraben, propyl paraben, isopropyl paraben, butyl paraben, isobutyl paraben, heptyl paraben, wdg. Usoro mgbochi nke p-hydroxybenzoic acid esters bụ: a na-egbochi sistemụ iku ume nke mkpụrụ ndụ nje na ọrụ sistemụ enzyme mbufe eletrọn, ma nwee ike ibibi nhazi nke akpụkpọ ahụ mkpụrụ ndụ nje, ka o wee rụọ ọrụ nke ọgwụ nje.
5 Dehydroacetic acid na nnu sodium ya
Acid Dehydroacetic, usoro molekul C8H8O4 ya na nnu sodium ya bụ ntụ kristal ọcha ma ọ bụ odo odo dị nro, nwere ikike nje bacteria siri ike, ọkachasị ikike nje bacteria siri ike nke ebu na yist. Ọ bụ ihe nchekwa acid ma na-adịghị arụ ọrụ nke ọma maka nri ndị na-anọpụ iche. Ọ na-adịgide adịgide site na ìhè na okpomọkụ, na-agbanwe agbanwe gaa na acetic acid na mmiri mmiri, ọ naghịkwa egbu egbu nye ahụ mmadụ. Ọ bụ ihe nchekwa sara mbara ma a na-ejikarị ya echekwa anụ, azụ, akwụkwọ nri, mkpụrụ osisi, ihe ọṅụṅụ, achịcha, wdg.
6 Sodium lactate
Mmiri na-enweghị agba ma ọ bụ odo odo ntakịrị, enweghị isi, obere nnu na ilu, a na-agwakọta ya na mmiri, ethanol, glycerin. Oke kachasị eji bụ 60%-80%, oke ojiji kachasị bụ 30g/KG maka oke 60%... Sodium lactate bụ ụdị ihe nchekwa na nchekwa ọhụrụ, nke a na-etinyekarị na anụ na anụ ọkụkọ, nke nwere mmetụta siri ike na nje bacteria nri anụ. A na-etinye ya karịsịa na anụ a ṅara n'ọkụ, ham, soseji, ọkụkọ, ọbọgwụ na ngwaahịa anụ ọkụkọ na ihendori na ngwaahịa brine. Usoro ntụaka maka ichekwa ọhụrụ na ngwaahịa anụ: sodium lactate: 2%, sodium dehydroacetate 0.2%.
7 Dimethyl fumarate
Ọ bụ ụdị ọhụrụ nke mgbochi ebuihe nchekwanke a na-emepụta nke ọma n'ụlọ na mba ofesi, nke nwere ike igbochi ihe karịrị ụdị ebu na yist iri atọ, arụmọrụ nje bacteria ya anaghị emetụta uru pH, yana uru nke arụmọrụ dị elu na ụdị sara mbara, nchekwa dị elu na ọnụ ala dị ala. Ọrụ nje bacteria na ọgwụ nje zuru oke ya dị elu, yana ọrụ bayoloji siri ike. Ọ nwere ihe ndị na-eme ka ihe dị ọcha n'ihi sublimation, yabụ ọ nwere ọrụ abụọ nke ime ka ihe dị ọcha n'ahụ na ime ka ihe dị ọcha n'ahụ. Nsí dị ala, banye n'ahụ mmadụ ngwa ngwa n'ime ihe ndị nkịtị nke metabolism mmadụ na fumaric acid, itinye ezigbo ike imeghachi.