A novel, environmentally sustainable biomanufacturing process that utilizes genetically engineered yeast to produce oxalic acid, which is subsequently used to extract and purify free rare-earth elements (REEs) from low-grade ore.
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https://www.sflorg.com/2026/03/beng03162601.html
Engineered yeast gives the U.S. a green edge in the critical minerals market

Biomanufacturing oxalic acid by engineering the low-pH-tolerant yeast Issatchenkia orientalis greatly simplifies the process