[Yuav Tsum Tau Paub Txog] Ntawm Cov Tshuaj Tiv Thaiv
Jul 09, 2020
NO.5 Parabens
Parabens yog qhov ntev-spectrum tshuaj. Cov khoom lag luam suav nrog methyl paraben, ethyl paraben, propyl paraben, butyl paraben, isobutyl paraben Ntawm lawv, butyl p-hydroxybenzoate muaj cov tshuaj tua kab mob zoo tshaj plaws. Kuv lub teb chaws feem ntau siv cov tshuaj ethyl p-hydroxybenzoate thiab propyl p-hydroxybenzoate, thiab Nyiv siv butyl p-hydroxybenzoate tshaj plaws. Ob qho tib si ethyl thiab propyl p-hydroxybenzoate yog cov xim tsis muaj xim zoo los yog cov hmoov dawb crystalline, uas nyuaj rau yaj hauv dej thiab yaj hauv ethanol ua ntej siv. Qhov ua tiav antiseptic ntawm propyl p-hydroxybenzoate zoo dua li ntawm ethyl p-hydroxybenzoate. Parabens muaj qhov zoo tshaj plaws nyob rau hauv hu ua fungi hauv pH thaj tsam ntawm 4-8. Tus nqi pH zoo tshaj plaws rau kab mob yog 7.0. Cov nyhuv kuj tseem muaj zog dua benzoic acid thiab sorbic acid, thiab nws tseem ua rau cov kab mob Gram-positive. Siv kev txwv: kev ci rau cov zaub mov thiab cov muab tshuaj noj (tsuas yog rau cov ncuav pastry) tsis siab dua 0.5g / kg
Antiseptic mechanism: thaiv kev ua ub ua no ntawm cov pa ua pa thiab hluav taws xob hloov pauv cov qe ntshav ntawm microbial, thiab rhuav tshem cov cell membrane ntawm microorganisms kom ua rau cov protein tsis ua haujlwm.
NO.6 Natamycin (tseem hu ua mildew)
Natamycin yog xim dawb rau milky dawb hmoov, insoluble hauv dej. Nws yog tsim los ntawm kev kho lub cev ntawm streptomycin. Nws yog tib qho tshuaj tua kab mob nrog kev muaj peev xwm bactericidal. Nws muaj qhov ua tau zoo inhibitory feem ntau ntawm cov pwm, cov poov xab thiab cov hu ua fungi. Nws tuaj yeem tiv thaiv qhov tsim los ntawm aflatoxins hauv kev pom cov kab mob hu ua fungi. Cov kab mob ua haujlwm tsis muaj kev cuam tshuam dab tsi. Qhov ntau npaum li cas ntawm natamycin yog tsawg heev, nyab xeeb thiab yuav tsis tsim tshuaj yaj yeeb. Nws tuaj yeem xaiv cov sterilized thaum siv rau hauv cov khoom muaj txiaj xws li cov cheese thiab cov kua mis nyeem qaub, tab sis nws cov haujlwm tau cuam tshuam los ntawm ultraviolet rays, pH, kub, qhov sib zog, oxidants thiab hlau hnyav. Vim tias nws qis solubility, nws yog feem ntau siv rau antiseptic nyob rau saum npoo ntawm zaub mov. Nws yog tam sim no feem ntau siv rau hauv kev tsim thiab khaws cia cov khoom noj siv mis, cov khoom noj nqaij, cawv txiv hmab, dej haus thiab lwm yam zaub mov. Txwv tsis pub siv: Cov nyiaj uas siv rau hauv cov khoom siv pastry tsis ntau dua 0.3g / kg (siv saum npoo, rho tawm tshuaj tsuag los yog tsau, cov khoom seem< 10mg="">
Cov kab mob Bacteriostatic: Nws reacts nrog sterol cov sib txuas ntawm lub cell membrane hloov pauv permeability ntawm lub cell daim nyias nyias, uas ua rau muaj dej tsis sib haum ntawm cov ntsiab lus thiab cov cell tawg.
NO.7 ε-polylysine
Ε-polylysine yog lub teeb daj hmoov, uas muaj cov yam ntxwv ntawm cov kab mob uas muaj kev tiv thaiv dav, zoo solubility dej, muaj kev nyab xeeb, dav antibacterial, thiab tsis cuam tshuam los ntawm pH. Nws yog ib hom antibacterial polypeptide uas ua los ntawm streptomycin, uas tuaj yeem muab zom thiab nqus tom qab nkag mus rau tib neeg lub cev. Tsis tsuas yog nws tsis muaj kev phiv tshuaj lom, tab sis kuj tuaj yeem siv los ua cov khoom siv ntawm lysine. Nws muaj qhov cuam tshuam rau kev rov ua dua ntawm Gram-cov kab mob zoo thiab cov kab mob tsis zoo xws li Escherichia coli, Bacillus subtilis, cov poov xab, cov kab mob lactic acid, thiab Staphylococcus aureus, tab sis muaj cov nyhuv tsawg dua ntawm cov pwm. Nyob rau tam sim no, nws yog tsuas yog siv rau hauv kev txuag cov hmoov txhuv nplej siab xws li cov mij kib, kib khoom kib, kua zaub, tov mov thiab lwm yam. Siv qhov txwv: tus nqi ntawm cov khoom ci tsis yog ntau dua 0.15g / kg.
Cov kab mob Bacteriostatic: Adsorbed rau lub cell membrane, rhuav tshem cov qauv membrane, ua rau cuam tshuam kev cuam tshuam ntawm cov khoom siv ntawm tes, lub zog thiab cov ntaub ntawv xa mus, thiab ua rau kev tawg ntawm cov kab mob sib kis, uas ua rau lub cev tuag ntawm cov kab mob, thiab thaum kawg ua rau kev tuag ntawm tes.
Kev siv cov khoom noj khoom haus ntxiv yuav tsum ua raws li cov hauv qab no:
(1) Yuav tsum tsis txhob ua rau muaj kev noj qab haus huv rau tib neeg lub cev;
(2) spoilage thiab deterioration ntawm cov zaub mov yuav tsum tsis txhob npog;
(3) Cov khoom noj ntxiv rau lub cev yuav tsum tsis txhob siv los zais qhov tsis zoo hauv cov zaub mov nws tus kheej lossis hauv cov txheej txheem ua, lossis siv cov khoom noj khoom noj ntxiv rau lub hom phiaj ntawm kev ua nkauj nraug, deev luag poj luag txiv, lossis cuav;
(4) Tus nqi khoom noj khoom haus ntawm cov zaub mov nws tus kheej yuav tsum tsis txhob txo;
(5) Ntawm kev ua tiav ntawm cov txiaj ntsig xav kom ua tiav, txo qis kev siv khoom noj kom ntau li ntau tau.
Cov lus qhia tseem ceeb:
Cov tshuaj khaws cia saum toj no yog cov khoom noj khoom haus ntxiv rau hauv cov lus A.1, thiab cov khoom noj khoom noj ntxiv nrog rau cov nuj nqi qub (tib xim thiab tus neeg saib xyuas xim, tshuaj tua kab mob, tshuaj tua kab mob) nyob rau hauv rooj A.1 yog siv ua ke, thiab lawv cov noj tshuaj rau lawv cov kev siv ntau tshaj Cov lej ntawm cov sib piv yuav tsum tsis pub tshaj 1.
Thaum siv cov kua tshuaj, cov poov xab kuj tseem nce ntxiv.