[Yuav Tsum Tau Paub Txog] Ntawm Cov Tshuaj Tiv Thaiv
Jul 06, 2020
NO.3 Dehydroacetic acid thiab nws cov ntsev ntsev (dehydroacetic acid thiab nws cov ntsev ntsev)
Dehydroacetic acid yog tsis muaj xim rau cov koob dawb-zoo li lossis muaju, muaj cov hmoov dawb dawb, tsis qab ntxiag rau lub cev, tsis muaj kuab lom rau hauv dej, hloov daj nyob rau hauv tshav ntuj ncaj qha, muaj zog acidity, muaj cov tshuaj tua kab mob zoo rau cov kab mob sib kis, cov pwm thiab cov poov xab, tab sis ib txwm ua tsis tau zoo rau cov khoom noj nruab nrab. Sodium dehydroacetate yog cov muaju dawb nrog kua qaub acetic thiab tsis hnov qab tau yooj yim hauv dej, yog li cov ntsev sodium feem ntau siv. Sodium dehydroacetate muaj ntau yam tshuaj tua kab mob. Nws muaj cov nyhuv inhibitory kab mob rau cov kab mob, cov poov xab, thiab cov pwm uas ua rau lwj. Cov nyhuv inhibitory yog qhov ruaj khov. Cov nyhuv yog qhov zoo tshaj plaws thaum tus nqi pH tsawg dua 9, thiab nws tsis yooj yim los ua kom qhuav los ntawm cua sov thaum lub sijhawm ua haujlwm. Tam sim no, nws yog dav siv hauv kev khaws cia ntawm cov nqaij, fermented taum curd, kua ntses, pickles, kua txiv hmab txiv ntoo, lub hli ncuav, ncuav mov, ncuav mog qab zib, hmoov txhuv nplej siab, thiab lwm yam Siv cov kev txwv: Cov ntsiab lus ntawm sorbic acid hauv khob cij, pastry thiab bakery cov zaub mov ntim thiab cov khoom ci sizing npoo yuav tsum tsis pub ntau tshaj 0.5g / kg.
Antiseptic mechanism: nws mas inhibits qhov kev loj hlob ntawm cov kab mob me me los ntawm kev rhuav tshem cov substructure ntawm microorganism hlwb thiab cov enzymes muaj feem xyuam.
NO.4 Sodium Diacetate (Kev Pab Dodium Diacetate)
Sodium diacetate yog cov dawb crystalline hmoov lossis crystalline khoom, nrog qhov tsis hnov tsw ntawm acetic acid, yooj yim soluble hauv dej thiab ethanol. Sodium diacetate yog ib hom tshiab ntawm kev ua haujlwm siab, dav-spectrum antibacterial thiab antifungal tus neeg sawv cev uas tau lees paub tias muaj kev nyab xeeb thiab txhim khu kev qha. Qhov kawg metabolites nyob hauv tib neeg lub cev yog dej thiab carbon dioxide. Sodium diacetate muaj qhov tseem ceeb tiv thaiv kab mob rau Aspergillus niger, Rhizopus nigricans, Aspergillus flavus, Trichoderma viride, thiab lwm yam. Tsis tas li ntawd, sodium diacetate kuj tseem siv los ua chelating tus neeg sawv cev los tiv thaiv ions hlau uas ua rau oxidation hauv zaub mov. Siv cov kev txwv: qhov nyiaj uas siv rau hauv cov khoom ua pastry tsis yog ntau dua 4g / kg.
Antiseptic mechanism: Cov nyhuv tshuaj tiv thaiv ntawm sodium diacetate yog muab tau los ntawm acetic acid. Acetic acid nkag mus rau hauv phab ntsa ntawm tes ntawm cov kab mob me me, uas tuaj yeem cuam tshuam kev loj hlob ntawm ntau cov enzymes hauv lub cell, lossis tsis kam ua cov protein hauv microbial cell, yog li muaj kev tiv thaiv zoo rau cov plua plav thiab antiseptic. Cov kab mob ua haujlwm tau zoo dua li benzoic acid, calcium propionate thiab potassium sorbate.
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.
