Raws li ib txwm zom cov khoom, cov txiv ntoo areca tau muab faib ua ntau qib raws li nws qhov zoo. Qib 1 areca txiv ntoo feem ntau yog tiaj tus thiab puag ncig lossis conical hauv cov duab, nrog lub ntsej muag daj lossis xim av, ib qho kev ntxhib los mos, thiab cov qauv marbled ntawm greyish -dawb thiab reddish- cov hlab ntsha xim av ntawm tus ntoo khaub lig- ntu. Nws muaj ib tug iab thiab astringent saj. Tus naj npawb ntawm cov txiv ntseej hauv ib 1000 grams yuav tsum tsis pub tshaj 160, thiab yuav tsum tsis muaj cov cores qhuav, tawg, impurities, kab puas, lossis pwm.
Qib 2 areca txiv ntoo zoo ib yam li cov duab thiab kev ntxhib los mos rau Qib 1 areca txiv ntoo. Nws nto yog daj ntseg daj los yog xim av daj - daj, thiab tus ntoo khaub lig- ntu kuj qhia tau hais tias marbled qauv ntawm greyish -dawb thiab reddish- cov hlab ntsha xim av. Cov saj kuj iab thiab astringent. Tus naj npawb ntawm cov txiv ntoo ntawm 1000 grams yuav tsum ntau tshaj 160. Ib feem ntawm cov khoom tawg thiab cov cores qhuav yog tso cai, tab sis feem pua ntawm cov cores qhuav yuav tsum tsis pub tshaj 5%, thiab kab puas yuav tsum tsis pub tshaj 3%. Ib yam li ntawd, Qib 2 areca txiv ntoo yuav tsum tsis muaj impurities thiab pwm.
Areca txiv ntoo muaj ntau yam khoom noj muaj txiaj ntsig zoo rau tib neeg lub cev. Nws cov txiv hmab txiv ntoo nyoos feem ntau muaj 31.1% phenols, 18.7% polysaccharides, 14.0% rog, 10.8% crude fiber, 9.9% dej, 3.0% tshauv, thiab 0.5% alkaloids. Areca txiv ntseej tseem muaj ntau dua 20 kab lus, 11 qhov tseem ceeb rau tib neeg lub cev.
Tag nrho cov ntsiab lus alkaloid nyob rau hauv cov noob txiv ntoo yog li ntawm 0.3% mus rau 0.6%, nrog rau arecoline yog cov khoom tseem ceeb. Nws kuj muaj me me ntawm arecoline, norarecoline, isonorarecoline, arecoline paraalkaloid, thiab homoarecoline, tag nrho cov coexist nrog tannic acid. Areca txiv ntoo kuj muaj tannins, rog, mannitol, galactose, sucrose, catechins, epi-catechins, tsis muaj kob anthocyanins, areca oleracea, saponins, thiab ntau yam dimers, trimers, thiab tetramers ntawm procyanidins.
Cov fatty acid muaj xws li lauric acid 19.5%, myristic acid 46.2%, palmitic acid 12.7%, stearic acid 1.6%, oleic acid 6.2%, linoleic acid 5.4%, dodecanoic acid 0.3%, thiab tetradecenoic acid 7.2%. Nws kuj muaj cov amino acids, ntawm cov ntsiab lus proline tshaj 15%.