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Meet an Unreasonable Venture


Driving the world toward a circular economy by fermenting biomass to create novel ingredients.

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Lina Sakai

Founder & CEO at Fermenstation

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Employees 6–20
Headquarters Taito City, Tokyo, Japan
Fermenstation is a certified B-Corp that transforms biomass into valuable ingredients through fermentation technology. Operating in Japan, they collaborate with food, beverage, and cosmetic industries to convert waste into ingredients for various products. The company has one factory, currently being upgraded to handle more volume, and has completed trials with over 40 customers. Fermenstation aims to increase production through new partnerships, expand product offerings, and scale globally.

Notable Achievements

  • Fermenstation has utilised over 30 different biomass sources such as wood, abandoned farmland, and food waste in its fermentation to produce
  • Completed trials with over 40 companies including Asahi, All Nippon Airways, L'Oréal, Nichirei, and Kanro
  • The company has a low-impact manufacturing process, zero waste system, low water usage, and circular approach

Currently Operating in One Region

Press Mentions

May 23, 2024

Unreasonable Impact announces new roster of ventures for Asia Pacific programme

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