From Leaf to lunch: the Canterbury startup rethinking protein

From Leaf to lunch: the Canterbury startup rethinking protein

April 8, 2026 · 40 min · Season 4 · Episode 144

About this episode

The episode discusses a startup's innovative approach to extracting protein from plant leaves for sustainable food solutions.

Forget soy, pea, or lab-grown meat – the next frontier in sustainable food might just be hiding in plain sight. Specifically, in the leaves of everyday plants growing across New Zealand’s farmland. In the latest episode of The Business of Tech podcast, I talk to Ross Milne, the CEO of Rolleston-based startup Leaft Foods, which has pioneered a breakthrough technique to extract and process Rubisco, a naturally occurring protein found in every green leaf.  Scientists have long known Rubisco’s potential, calling it the “utopia protein” for its rich nutritional profile and low environmental footprint. What’s been missing until now is a practical way to isolate it for use in food and animal feed. From milk to leafy greens Milne, a former process engineer who worked for some of the world’s largest food companies, saw an opening for innovation back home in New Zealand, teaming up with Leaft Food founders John Penno (Synlait Milk co-founder) and Maury Leyland Penno. Leaft’s approach promises not just a powerful alternative to traditional protein sources, but a clever circular system where farmers can use the high-protein byproducts as…

People in this episode

Host: BusinessDesk

Guest: Ross Milne

Topics covered

Keywords

Mentioned in this episode

Organizations: Leaft Foods, Khosla Ventures

Products: Rubisco

Places: New Zealand, Rolleston

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