Methyl 4-hydroxybenzoate Methylparaben yog ib qho tshuaj tiv thaiv nrog cov tshuaj formula CH3 (C6H4 (OH) COO). Nws yog methyl ester ntawm p-hydroxybenzoic acid.
Methyl 4-hydroxybenzoate Methylparaben ua ib qho pheromone rau ntau yam kab thiab yog ib feem ntawm poj huab tais mandibular pheromone.
Nws yog ib qho pheromone nyob rau hauv hma uas tsim thaum lub sij hawm estrus txuam nrog tus cwj pwm ntawm alpha txiv neej hma tiv thaiv lwm tus txiv neej los ntawm mounting poj niam nyob rau hauv tshav kub.
Methyl 4-hydroxybenzoate Methylparaben yog ib qho tshuaj tiv thaiv kab mob feem ntau siv hauv ntau yam tshuaj pleev ib ce thiab cov khoom siv tu tus kheej. Nws kuj yog siv los ua zaub mov preservative.
Methyl 4-hydroxybenzoate Methylparaben feem ntau yog siv los ua fungicide hauv Drosophila zaub mov ntawm 0.1%. Rau Drosophila, methyl 4-hydroxybenzoate methylparaben yog tshuaj lom nyob rau hauv ntau dua, muaj estrogenic nyhuv (mimicking estrogen nyob rau hauv nas thiab muaj anti-androgenic kev ua si), thiab slows tus loj hlob tus nqi nyob rau hauv lub larval thiab pupal theem ntawm 0.2%.
Muaj kev tsis sib haum xeeb txog seb methyl 4-hydroxybenzoate methylparaben los yog propylparabens puas muaj kev phom sij ntawm cov concentrations feem ntau siv hauv kev saib xyuas lub cev lossis tshuaj pleev ib ce. Methylparaben thiab propylparaben raug suav hais tias feem ntau lees paub tias muaj kev nyab xeeb (GRAS) los ntawm USFDA rau zaub mov thiab tshuaj tua kab mob kom zoo nkauj. Methyl 4-hydroxybenzoate Methylparaben yog nkag tau yooj yim los ntawm cov kab mob hauv av, ua rau nws biodegradable tag nrho.
Methyl 4-hydroxybenzoate Methylparaben yog nkag tau yooj yim los ntawm txoj hnyuv los yog los ntawm daim tawv nqaij. Nws yog hydrolyzed rau p-hydroxybenzoic acid thiab tawm sai sai hauv cov zis yam tsis muaj tsub zuj zuj hauv lub cev. Cov kev tshawb fawb txog kev mob toxicity tau pom tias methylparaben yog qhov tsis muaj tshuaj lom los ntawm ob qho tib si qhov ncauj thiab parenteral kev tswj hwm hauv cov tsiaj. Hauv cov neeg uas muaj daim tawv nqaij ib txwm, methylparaben xyaum tsis ua rau khaus thiab tsis hnov tsw; Txawm li cas los xij, kev tsis haum tshuaj rau kev noj cov tshuaj parabens tau raug tshaj tawm. Ib txoj kev tshawb fawb xyoo 2008 pom tias tsis muaj kev sib tw sib tw rau tib neeg cov tshuaj estrogen thiab androgen receptors rau methylparaben, tab sis ntau qib sib tw sib tw tau pom nrog butyl- thiab isobutyl-paraben.
Cov kev tshawb fawb qhia tias methylparaben siv rau ntawm daim tawv nqaij yuav hnov mob nrog UVB, ua rau kom tawv nqaij laus thiab DNA puas.
Hauv kev teb rau cov kev txhawj xeeb no, qee lub koom haum tswj hwm thiab cov koom haum tau ua cov kauj ruam los txwv kev siv methyl paraben hauv qee yam khoom. Piv txwv li, European Union txwv qhov concentration ntawm methyl paraben tso cai rau hauv cov tshuaj pleev ib ce, thiab qee lub tuam txhab tau xaiv los hloov kho lawv cov khoom kom tsis muaj cov tshuaj paraben. Tsis tas li ntawd, kev xav tau loj zuj zus ntxiv rau cov khoom siv ntuj thiab cov organic rau cov tshuaj tua kab mob tau ua rau kev txhim kho cov qauv tshiab uas tsis muaj methyl paraben lossis lwm yam tshuaj parabens.
Methylparaben yog txaus siab rau nws txoj kev ruaj ntseg thiab kev sib raug zoo nrog ntau hom kev tsim. Nws feem ntau tsis hloov xim, tsw, lossis kev ntxhib los mos ntawm cov khoom siv, ua rau nws muaj ntau yam khoom siv rau cov chaw tsim khoom. Qhov kev ruaj ntseg no ncua lub neej txee thiab pab tswj tag nrho cov khoom zoo nyob rau lub sijhawm ntev.
Cov neeg siv khoom yuav tsum nkag siab txog lawv tus kheej rhiab heev thiab muaj peev xwm ua xua thaum siv cov khoom uas muaj methylparaben. Txawm hais tias methylparaben feem ntau suav hais tias muaj kev nyab xeeb rau kev siv tshuaj pleev ib ce, qee tus neeg yuav muaj kev khaus khaus lossis ua xua. Nws yog ib txwm pom zoo kom ua qhov ntsuas patch ua ntej siv cov khoom tshiab los txiav txim seb puas muaj kev phiv tshwm sim.
Nyob rau hauv xaus, methyl 4-hydroxybenzoate los yog methylparaben yog ib tug dav siv preservative nyob rau hauv lub cosmetic thiab kws industries. Txawm hais tias muaj kev tsis sib haum xeeb vim muaj kev txhawj xeeb txog nws qhov muaj peev xwm cuam tshuam txog qib tshuaj hormones thiab kev noj qab haus huv ntawm cov menyuam yaus, nws tseem yog ib qho kev xaiv nrov rau kev khaws cia khoom vim nws cov txiaj ntsig, kev ruaj ntseg, thiab kev sib raug zoo nrog ntau hom kev tsim. Raws li qhov kev thov rau cov khoom siv ntuj thiab cov organic txuas ntxiv mus ntxiv, kev siv methylparaben zoo li yuav hloov zuj zus thiab lwm cov tshuaj tiv thaiv yuav dhau los ua ntau dua hauv kev ua lag luam. Cov neeg siv khoom yuav tsum nkag siab txog cov khoom xyaw hauv cov khoom uas lawv siv thiab txiav txim siab ua raws li lawv tus kheej nyiam thiab kev txhawj xeeb.
Lub sij hawm xa tuaj: Plaub Hlis-19-2024