US 12,162,303B1
الصحة - Health
2024
مكتب البراءات الأمريكي - US Patent Office
Ali; Mai Mostafa Khalaf (Al-Ahsa, SA), El-Lateef; Hany Mohamed Abd (Al-Ahsa, SA), Gouda; Mohamed (Al-Ahsa, SA)
A thermochromic ink and, particularly, to a thermochromic ink produced by combining an anthocyanidin extract with alginate. The thermochromic ink can be used for authentication purposes produced by combining an anthocyanidin (ACYD)-based Brassica oleracea L. var. capitata extract with an alginate (ALG). To increase the anthocyanidin/alginate ink stability, a mordant (ferrous sulfate) can be used to link the anthocyanidin biomolecules with the alginate.