Making Cheese Enzyme in a Lab
Large-scale production of yak (Bos grunniens) chymosin A in Pichia pastoris.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
The lab-made yak enzyme performs just like commercial bovine chymosin in actual cheese production.
Many assume animal-sourced enzymes are superior, but this shows a genetically engineered alternative can match them exactly in texture and coagulation.
Practical Takeaways
Dairy producers could explore recombinant yak chymosin as a sustainable, animal-free alternative to calf rennet.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
The lab-made yak enzyme performs just like commercial bovine chymosin in actual cheese production.
Many assume animal-sourced enzymes are superior, but this shows a genetically engineered alternative can match them exactly in texture and coagulation.
Practical Takeaways
Dairy producers could explore recombinant yak chymosin as a sustainable, animal-free alternative to calf rennet.
Publication
Journal
Protein expression and purification
Year
2019
Authors
F. Ersöz, Mehmet Inan
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Claims (5)
Putting sugar tags on a lab-made yak enzyme in yeast doesn’t really change how much you get or how well it works in small lab bottles — so those sugar tags might not matter much at first.
Cheese made in the lab with a special enzyme from yaks feels and clumps together just like regular cheese made with cow enzymes.
Scientists made a special enzyme from yaks using yeast in a lab tank, and it worked well—producing a measurable amount of active enzyme.
This lab-made enzyme from yaks works best at clumping milk when it's slightly acidic and warm — just like in real cheese-making.
For thousands of years, the key ingredient that turns milk into cheese has come from the stomachs of baby calves.