The solution to plastic waste looks different depending on where you stand in the world. While Northern Hemisphere biotech approaches to plastic recycling focus on high-temperature enzymes designed to regenerate plastic monomers (which works when you produce lots of plastic), Cesar's lab has engineered a completely different solution. Starting with microorganisms from Antarctica, his team uses AI and deep learning to design enzymes that work efficiently at low temperatures - not to recycle plastic into more plastic, but to transform it into valuable fragrances and other products that actually have market demand in Latin America.

The conversation weaves between technical enzyme design challenges and broader themes of democratizing biotechnology across the Global South. During the COVID pandemic, when reagent shortages hit Latin America particularly hard, Cesar co-founded initiatives to produce essential molecular biology enzymes locally. This experience crystallized his vision of combining open science with practical innovation - making biotechnology tools accessible while simultaneously developing commercial applications.

Follow Cesar's work at the Institute for Biological and Medical Engineering ath the Pontificia Universidad Católica de Chile.

@cxarramirez

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