Cellulose yog ua los ntawm cov piam thaj monomers hauv daim ntawv beta, thiab qhov no tshwm sim hauv cov saw hlau uas txhua lwm cov monomer yog flipped upside down txheeb ze rau nws cov neeg nyob ze. … Tsis zoo li amylose, cellulose yog tsim los ntawm cov piam thaj monomers hauv lawv daim ntawv β, thiab qhov no muab nws cov khoom sib txawv heev.
YPuas cellulose ua los ntawm alpha lossis beta qabzib?
Cov qauv tsim thaum cov molecules sib koom oxygen yog txiav txim siab los ntawm daim ntawv twg cov piam thaj txuas ua ke. Starch muaj alpha qabzib, thaum cellulose yog ua los ntawm beta qabzib.
Yuav ua li cas cov piam thaj hauv cellulose?
Cellulose yog muab los ntawm D-glucose units, uas condense los ntawm β(1→4)-glycosidic bonds. Qhov kev sib txuas motif no sib piv nrog rau qhov α(1 → 4)-glycosidic bonds tam sim no hauv cov hmoov txhuv nplej siab thiab glycogen. Cellulose yog ib txoj hlua ncaj nraim polymer.
YPuas cellulose puas yog polymer ntawm beta qabzib?
Thaum alpha-glucose molecules tau koom nrog tshuaj lom neeg los tsim cov hmoov txhuv nplej siab polymer. Thaum cov beta-glucose molecules koom ua ib lub polymer cellulose yog tsim.
Vim li cas beta qabzib ua cellulose?
Cellulose yog tsim los ntawm 1, 4 glycosidic bonds ntawm pua pua ntawm D-beta-glucose molecules thiab hydrogen bonds ntawm cov txheej ntawm polysaccharide. Qhov no tsim cov qauv crystalline heev, uas cov nroj tsuag siv los tswj cov phab ntsa ntawm tes. Cellulose tuaj yeem hydrolysed nrog enzymes rov qab mus rau qabzib.
