Qhov sib txawv ntawm cov qej dub thiab qej dawb yog qhov tseem ceeb hauv cov hauv qab no:
xim. Cov qej dub yog ua tiav los ntawm cov txheej txheem tshwj xeeb xws li ntuj fermentation los yog kub-kub ci, thiab nws cov xim yuav dub los yog xim av-dub; qej dawb yog cov qej zoo tib yam uas tsis tau ua tiav tshwj xeeb, yog li nws cov xim yog dawb.
tsw. Lub saj ntawm qej dub yog sweeter, ntau qaub, ntau aroma, thiab tsis ntsim. Qhov no yog vim cov qej dub tau dhau los ntawm cov txheej txheem fermentation tshwj xeeb, uas ua rau cov proteins, suab thaj, thiab lwm yam hauv nws mus rau cov tshuaj tiv thaiv enzymatic thiab tsim cov khoom tshiab; Cov qej dawb muaj qhov ntsim saj, thiab nws qhov tshwj xeeb ntsim saj yog los ntawm cov tshuaj lom neeg lom allicin.
Khoom noj khoom haus. Dub qej yog nplua nuj nyob rau hauv protein, amino acids, polysaccharides, soluble qab zib, qib siab suab thaj, organic acids, vitamins C, D, E, thiab selenium; qej dawb yog nplua nuj nyob rau hauv sulfide, allicin thiab lwm yam khoom xyaw.
nyhuv. Cov qej dub muaj zog antioxidant muaj peev xwm ntau dua li cov qij dawb vim tias cov qej dub tau dhau los ua qhov tshwj xeeb fermentation thiab "saccharification" txheej txheem kom tau txais ntau cov tshuaj antioxidant, xws li S-allyl-L-cysteine, uas yog ib qho muaj zog denaturing protein txo tus neeg sawv cev. Tsis tas li ntawd, qej dub kuj muaj cov tshuaj tua kab mob ntau dua thiab muaj cov tshuaj tua kab mob zoo dua thiab tiv thaiv kab mob; qej dawb muaj ntau yam teebmeem xws li txo cov ntshav lipids, txo cov ntshav siab, thiab tiv thaiv qog noj ntshav.
Txawm tias dawb qej los yog qej dub, lawv ntxiv tsw rau peb cov tais diav.
