Mycoprotein can be produced using the microorganism Fusarium. Describe how mycoprotein is produced and explain why it is considered a sustainable food source.

AQA GCSE Biology (8461) — 4.7.5 Food production (Bio only) · Describe and Explain · 4 marks · View as Markdown

Written & reviewed by James Millett — Biology (Imperial College London), PGCE Science (University of Cambridge).

Model answer (4 marks)

Fusarium is grown in large fermentation vats where it is provided with a nutrient medium containing sugars, minerals and vitamins. The fungus grows rapidly, forming a mycelial mass that is harvested and processed into a high‑protein product called mycoprotein.

Mycoprotein is considered sustainable because it contains a high proportion of protein but requires no large land area, unlike livestock or crop farming. The rapid growth of Fusarium allows production to be scaled up quickly to meet demand, and the process uses fewer natural resources, helping to meet food‑security needs without depleting the environment.

Examiner tips

  • Use the word ‘fermentation vats’ and mention the nutrient medium. Include that the product is high in protein. Explain the land‑use advantage and rapid, scalable growth. Link these points to sustainability and food security.

Common mistakes

  • Forgetting to mention the fermentation vats or nutrient medium. Describing the product as ‘low protein’ or omitting the sustainability argument. Using vague terms like ‘good for the planet’ without specific reasons.

Mark scheme (4 marks)

  1. Fusarium is grown / cultured in fermentation vats
  2. The product is high in protein
  3. Mycoprotein can be produced without using large areas of land (compared to rearing animals / growing crops for meat)
  4. Fusarium can be grown rapidly / production can be scaled up quickly to meet demand / meets food security needs without depleting natural resources

Key terms in this question

mycoprotein · Fusarium · sustainable

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