| 摘要 |
A method of preparing genipin-rich materials from the fruit of Genipa americana fruit for their use as a cross-linking agent and as a raw material to produce colors is disclosed. The genipin-rich materials can be used in a broad range of applications including personal care, cosmetics, dietary supplements, packaging, textiles, beverages, foodstuffs, drugs, and animal feeds. |
| 主权项 |
1. A method of preparing a genipin-rich red colorant from Genipa americana comprising:
(a) extracting a Genipa americana fruit source selected from the group consisting of Genipa americana whole fruit, fruit juice, fruit puree, fruit juice concentrate, dried powder forms of the fruit and juice, water-insoluble parts of the fruit, and mixtures thereof, with a solvent selected from water, organic solvents, and mixtures thereof, to produce a genipin-rich extract; (b) hydrolyzing the genipin-rich extract for 30 minutes to 24 hours to produce a hydrolyzed extract; (c) adjusting the pH of the hydrolyzed extract to about 3.5-5.0, to produce an acidified solution; (d) heating the acidified solution to 65 to 85° C. for about 5 to 120 minutes to produce a brown-colored precipitate and removing the precipitate to produce a clear solution, (e) adjusting the pH of the clear solution to about 4-4.6, (f) mixing the solution of step (e) with one or more compounds having a primary amine group in the presence of an organic acid or salt thereof, under anaerobic conditions, for a sufficient time and temperature to produce the genipin-rich red colorant. |
