Zotetezandi zinthu zomwe zimalepheretsa kukula kwa tizilombo tating'onoting'ono mkati mwa chinthu kapena zimalepheretsa kukula kwa tizilombo toyambitsa matenda timene timachita ndi mankhwalawo.Zotetezera sikuti zimangolepheretsa kagayidwe ka mabakiteriya, nkhungu ndi yisiti, komanso zimakhudza kukula ndi kubereka kwawo.Kukonzekera kosungirako kumakhudzidwa ndi zinthu zosiyanasiyana, monga kutentha kwa chilengedwe, PH ya mapangidwe, kupanga mapangidwe, ndi zina zotero.
Zinthu zomwe zimakhudza magwiridwe antchito a cosmetic preservatives ndi izi:
A. chikhalidwe cha zoteteza
Mtundu wa preservative wokha: kugwiritsa ntchito ma conservatives ndende komanso kusungunuka kwamphamvu kwambiri pakuchita bwino.
1, Nthawi zambiri, kuchuluka kwa ndende kumakhala kothandiza kwambiri;
2, Zosungirako zosungunuka m'madzi zimakhala ndi zoteteza bwino: tizilombo tating'onoting'ono timachulukirachulukira mu gawo lamadzi la thupi lopangidwa ndi emulsified, mu thupi lopangidwa ndi emulsified, tizilombo tating'onoting'ono timakhala tating'onoting'ono pamadzi amafuta kapena kusuntha m'madzi.
Kuyanjana ndi zosakaniza zina pakupanga: kusagwira ntchito kwa zoteteza ndi zinthu zina.
B. Njira yopangira mankhwala
Malo opangira;kutentha kwa njira yopangira;dongosolo lomwe zidawonjezedwa
C. Chomaliza
Zomwe zili mkati ndi kulongedza kwakunja kwa mankhwala zimatsimikiziranso malo okhala ndi tizilombo toyambitsa matenda mu zodzoladzola.Zinthu zachilengedwe zachilengedwe zimaphatikizapo kutentha, chilengedwepH mtengo, kuthamanga kwa osmotic, ma radiation, kuthamanga kwa static;Zomwe zimapangidwira zimaphatikizapo magwero a madzi, zakudya (C, N, P, S magwero), mpweya, ndi kukula kwa organic.
Kodi zoteteza zimawunikidwa bwanji?
The minimal inhibitory concentration (MIC) ndiye index yofunikira yowunika momwe zotetezera zimagwirira ntchito.Mtengo wa MIC ukakhala wotsika, zotsatira zake zimakhala zokwera.
MIC ya zotetezera idapezedwa ndi kuyesa.Osiyana ndende ya zoteteza anawonjezedwa kwa madzi sing'anga ndi angapo dilution njira, ndiyeno tizilombo anali inoculated ndi chikhalidwe, otsika zoletsa ndende (MIC) anasankhidwa poona kukula kwa tizilombo.
Nthawi yotumiza: Mar-10-2022