181. Can Hue Believe It? Gerit Tolborg’s Quest for Pure Color at Chromologics

Episode notes

Gerit Tolborg, CEO and co-founder of Chromologics, joins Karl and Erum to explore how filamentous fungi can replace synthetic and plant-extracted food dyes with a fermentation-derived red pigment called Tellurin. Gerit shares how a PhD discovery in Denmark led to a venture-backed startup producing a tasteless, odorless, and highly vibrant natural color that performs across processed food categories, from cured meats to bakery to dairy. The conversation covers the real economics of bio-based colorants (including the critical concept of cost-in-use versus kilo price), the challenges of scaling downstream processing from a two-liter reactor to industrial CMOs, and how regulatory pathways at the FDA and EU's FSA are evolving to accommodate fermentation-derived ingredients. Gerit also makes a compelling case for fermentation as a tool for decentralizing and de-risking global supply chains, freeing agricultural land from color crop production and building resilience against climate and geopolitical disruption. Grow Everything brings the bioeconomy to life.

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