This　work　studied　the　effect　of　storage　at　different　temperatures　on　the　relationship　between　the　colour　change　and　bio-actives　(curcumin　and　β-carotene)　content　change　in　the　bigels　3D　printing　products.　At　relatively　low　temperatures　(4　°C　and　15　°C),　β-carotene　degraded　rapidly,　but　a*　changed　slowly　because　of　less　migration　of　curcumin,　indicating　that　colour　change　cannot　be　used　for　monitoring　bio-active　changes.　At　relatively　high　temperatures　(25　°C　and　35　°C),　the　β-carotene　degradation　fractions　reached　0.924　and　0.967.　Meanwhile,　a*　increased　to　7.318　and　11.710　while　the　curcumin　migration　fraction　increased　quickly,　which　indicated　that　changes　in　colour　and　bio-actives　content　had　high　consistency　at　25　°C　and　35　°C.　At　these　temperatures,　the　bigels　3D　printing　product　lost　structure　stability　due　to　the　high　freedom　of　moisture　in　hydrogel　and　increased　mobility　of　oleogel,　leading　to　rapid　colour　change　and　fast　molecular　movement　of　curcumin　and　β-carotene.　©　2023　Elsevier　Ltd