Lub thermal stability ntawm collagen yog hais txog qhov ntsuas ntawm thermal shrinkage kub (Ts) ntawm cov fibers nyob rau hauv lub aqueous system, los yog thermal denaturation kub (Td) ntawm cov molecules nyob rau hauv cov tshuaj. Qhov sib txawv ntawm Ts thiab Td feem ntau yog nyob nruab nrab ntawm 20 thiab 25 degree, thiab tus nqi Ts yooj yim los ntsuas dua tus nqi Td. Td kuj tseem tuaj yeem qhia qhov kub thiab txias ntawm collagen helix tawg, thiab nws kuj tseem cuam tshuam rau cov ntsiab lus ntawm nws cov imino acids (proline thiab hydroxyproline), tshwj xeeb tshaj yog cov ntsiab lus ntawm hydroxyproline, thiab muaj kev sib raug zoo ntawm lawv. Cov ntsiab lus ntawm hydroxyproline yog qhov qis tshaj plaws, yog li Td tus nqi ntawm collagen hauv cov ntses dej txias yog qhov qis dua li cov ntses dej sov, tab sis kuj qis dua cov tsiaj hauv av. Txawm li cas los xij, piv nrog cov ntses tawv nqaij collagen, Td ntawm dermis yog kwv yees li 1 degree qis dua li cov leeg nqaij, uas muaj feem xyuam rau qhov siab dua hydroxylation ntawm proline hauv cov leeg collagen dua li cov dermal collagen. Qee tus neeg tau ntsuas cov amino acid muaj pes tsawg leeg ntawm ntau cov ntses tawv nqaij soluble collagen thiab muab piv nrog cov amino acid muaj pes tsawg leeg ntawm cowhide thiab pom tias cov ntsiab lus ntawm hydroxyproline thiab proline hauv ntses tawv nqaij collagen yog qis dua li ntawm cowhide. Tsis tas li ntawd, piv nrog cowhide gelatin, ntses daim tawv nqaij gelatin muaj qis dua qhov viscosity thiab thermal denaturation kub.
