Preservativeszvinhu zvinodzivirira kukura kweutachiona mukati mechigadzirwa kana kudzivirira kukura kweutachiona hunobata nechigadzirwa.Preservatives haingodziviriri chete metabolism yebhakitiriya, mold uye mbiriso, asiwo inokanganisa kukura kwavo uye kubereka.Kuchengetedza kwekugadzirisa mukugadzirisa kunokonzerwa nezvinhu zvakasiyana-siyana, zvakadai sekupisa kwezvakatipoteredza, PH yekugadzirwa, nzira yekugadzira, etc. Nokudaro, kunzwisisa zvinhu zvakasiyana-siyana kunobatsira kusarudza nekushandisa zvakasiyana-siyana zvekuchengetedza.
Zvinhu zvinokanganisa mashandiro ecosmetic preservatives ndeaya anotevera:
A. chimiro chekuchengetedza
Chimiro chekuchengetedza pachayo: kushandiswa kwekuchengetedza kuchengetedza uye kunyungudika kwekuita kukuru pakubudirira.
1, Kazhinji, iyo yakakwira iyo yekuisa pfungwa, inonyanya kushanda;
2, Mvura-inonyungudika inochengetedza ine zvirinani kuchengetedza kushanda: tupukanana tunowanzo wedzera muchikamu chemvura chemuviri wakamisikidzwa, mumuviri wakamisikidzwa, hutachiona huchashambadzirwa pairi-mvura interface kana kufamba muchikamu chemvura.
Kudyidzana nezvimwe zvinongedzo mukugadzira: kusashanda kwezvinochengetedza nezvimwe zvinhu.
B. Kugadzirwa kwechigadzirwa
Nzvimbo yekugadzira;kupisa kwemaitiro ekugadzira;marongerwo ayo zvinhu zvinowedzerwa
C. Chigadzirwa chekupedzisira
Zviri mukati uye kurongedza kwekunze kwezvigadzirwa zvinotarisa zvakananga nharaunda yekugara yema microorganisms mune cosmetics.Zvenyama zvakatipoteredza zvinosanganisira tembiricha, zvakatipoteredzapH kukosha, osmotic pressure, mwaranzi, static pressure;Kemikari zvinhu zvinosanganisira zvitubu zvemvura, zvinovaka muviri (C, N, P, S zvitubu), oxygen, uye organic kukura zvinhu.
Kushanda kwezvinochengetedza kunoongororwa sei?
Iyo minimal inhibitory concentration (MIC) ndiyo indekisi yekutanga yekuongorora maitiro ezvekuchengetedza.Izvo zvishoma kukosha kweMIC, iyo yakakwirira mhedzisiro iri.
Iyo MIC yezvekuchengetedza yakawanikwa nekuedza.Kusiyana kwakasiyana-siyana kwekuchengetedza kwakawedzerwa kune svikiro remvura nenzira dzakatevedzana dze dilution, uye ipapo ma microorganisms akaiswa inoculated uye akagadzirwa, iyo yakaderera inhibitory concentration (MIC) yakasarudzwa nekucherechedza kukura kwe microorganisms.
Nguva yekutumira: Mar-10-2022