Diphenylamine ((f)2NH) Test (2-Deoxy qab zib) Txhawm rau kuaj 2-deoxy qab zib, ntxiv 0.6 mL ntawm 0.01% carbohydrate tov rau 1 mL ntawm diphenylamine reagent thiab kub nyob rau hauv boiling dej da dej rau 10 feeb. Yog tias muaj 2-deoxy qab zib muaj xim xiav-ntsuab raug tsim.
Deoxy qab zib yog dab tsi?
Definition. Deoxy qab zib yog cov suab thaj uas ib qho ntawm hydroxyl (OH) cov khoom nyob rau ntawm cov pa roj carbon cyclic qaum yog hloov nrog hydrogen (H).
Txoj kev txiav txim siab qab zib yog dab tsi?
Cov kev siv ntau tshaj plaws rau kev kwv yees tag nrho cov suab thaj yog phenol sulfuric acid (PSA), 3-methyl-2-benzo thiazoline hydrazone hydrochloride (MBTH), thiab 2, 4, 6-tripyridyl- s-triazine (TPTZ).
Kev ntsuas dav dav rau carbohydrates yog dab tsi?
Ib qho kev sim rau qhov muaj ntau cov carbohydrates yooj yim yog siv Benedict's reagent. Nws hloov los ntawm turquoise mus rau daj los yog txiv kab ntxwv thaum nws reacts nrog txo suab thaj. Cov no yog cov carbohydrates yooj yim nrog unbound aldehyde lossis ketone pawg.
Dab tsi yog deoxy qab zib ploj?
Tshuaj tua kab mob muaj ntau yam hloov pauv cov piam thaj moieties, feem ntau deoxy- thiab deoxyamino qab zib, uas feem ntau yog qhov tseem ceeb rau kev ua haujlwm lom neeg. Feem ntau ntawm cov suab thaj no tsis muaj oxygen ua haujlwm ntawm C-6, ntxiv rau, cov pa oxygen ntawm C-2, C-3 thiab / lossis C-4 kuj tseem ploj lawm.
