by Gelert » Tue Feb 24, 2009 10:03 am
Quorn is not a man-made fungus. It's actually made from a soil mould, Fusarium venenatum, closely related to the wheat pathogen Fusarium graminearum It has not been genetically modified at all.
It gets grown in huge fermentors, and then harvested and the hyphae are treated to remove RNA (too much causes gout). It's then bound together with chicken egg albumen, textured and sold.
The company involved have been quite keen to improve the strain because it has a critical problem. Normally it grows in long strings called hyphae, which improves its texture, binding and yield. But after so many generations, the evolutionary selective pressure on shorter strings which give crap texture but grow better in a stirred tank fermentor is too strong. This has been one of the key reasons why A) it never took off as they hoped and B) it needs the egg albumen as a binding agent or it will all fall apart.
Their market is not even so much vegetarian as those wishing to reduce meat intake. Likewise GMO is off the cards because the target demographic is strongly against GMO.
If you wanted to look at a vegan broad equivalent, Quinova, which is essentially Rhizopus grown on quinoa, well how many people have heard of it? It was developed by my PhD supervisor's PhD supervisor and my supervisor was one of the guinea pigs. It's not been a commercial success.[/i]