https://pages.htgaa.org/2026b/renata-marizza-garcia-joaquin/week-01-hw-project-ideas/index.htmlBiosensor for measuring coffee quality My proposal is an optical biosensor to qualify coffee quality by detecting caffeic acid and 5-CQA, using a hydrogel immobilization matrix. Coffee is among the most important agricultural commodities grown in tropical regions. Consumers are increasingly interested in coffee quality, so demand for high quality and specialty coffee is growing. Phenolic acids, such as caffeic acid and chlorogenic acids, directly determine coffee cup quality and play an important role in coffee flavor. [1]Hugoen