Nitric acid reacts nrog cov proteins los tsim cov khoom daj nitrated. Cov tshuaj tiv thaiv no yog hu ua xanthoproteic cov tshuaj tiv thaiv. Qhov kev sim no yog ua los ntawm kev ntxiv cov concentrated nitric acid rau cov tshuaj uas tau sim, thiab tom qab ntawd ua kom sov cov sib tov.
Yuav ua li cas acid yog siv hauv Xanthoproteic kuaj?
Kev kuaj Xanthoproteic siv cov tshuaj nitration los txiav txim seb muaj cov protein nyob hauv cov tshuaj. Thaum cov qauv raug kho nrog kub, concentrated nitric acid nws reacts nrog aromatic amino acids xws li phenylalanine, tyrosine thiab tryptophan thiab tsim cov xim daj xim hu ua Xantho protein.
Vim li cas NaOH ntxiv hauv Xanthoproteic test?
Xanthoproteic kuaj yog tshwj xeeb rau cov protein uas muaj cov amino acids uas muaj ntxhiab. Lub nplhaib benzene nyob rau hauv cov amino acids yog nitrated los ntawm cua sov nrog nitric acid thiab ua daj nitro-compounds uas tig mus rau txiv kab ntxwv xim nrog alkali. … Txias lub raj mis thiab ntxiv 2mL ntawm 20% NaOH (los yog tshuaj ammonia) kom nws alkaline
Xanthoproteic kuaj pom phenolic amino acids li cas?
Xanthoproteic Test yog siv los paub qhov txawv cov amino acids nrog a phenyl nplhaib, phenol lossis ib pawg indole los ntawm lwm cov amino acids Xanthoprotein yog cov tshuaj daj acid uas tsim los ntawm kev ua ntawm kub. nitric acid ntawm albuminous los yog protein teeb meem thiab hloov mus rau ib tug sib sib zog nqus txiv kab ntxwv-daj xim los ntawm ntxiv ntawm ammonia.
Vim li cas phenylalanine muab qhov tsis zoo hauv Xanthoproteic kuaj?
HNO3. Lub nplhaib uas muaj ntxhiab benzene undergoes nitration muab cov khoom xim daj. Phenylalanine muab cov tshuaj tiv thaiv tsis zoo lossis tsis muaj zog txawm hais tias cov amino acid no muaj aromatic nucleus vim nws nyuaj rau nitrate nyob rau hauv ib txwm muaj.
