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Fungal Phylum Ascomycota01:28

Fungal Phylum Ascomycota

954
Phylum Ascomycota, a major division within the subkingdom Dikarya, comprises a diverse range of fungal species, including both unicellular yeasts and filamentous molds such as Aspergillus and Penicillium. These fungi thrive in a variety of habitats, from aquatic ecosystems to terrestrial environments, playing crucial ecological and economic roles.Morphology and ReproductionThe defining characteristic of Ascomycetes, commonly referred to as sac fungi, is the ascus—a sac-like structure that...
954

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Psilocybin Production With Genetically Modified Aspergillus nidulans Under Pressurized Conditions.

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Researchers developed a biotechnological method for producing psilocybin using Aspergillus nidulans. This efficient process achieved high yields, potentially supporting pharmaceutical applications for psychiatric treatments.

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Area of Science:

  • Biotechnology
  • Bioprocess Engineering
  • Mycology

Background:

  • Psilocybin, a compound from psychedelic mushrooms, shows promise for treating psychiatric disorders.
  • Current psilocybin supply for clinical research relies on chemical synthesis.
  • A biotechnological production route is needed to meet growing demand.

Purpose of the Study:

  • To develop an efficient biotechnological process for psilocybin production using Aspergillus nidulans.
  • To optimize cultivation conditions for high-yield psilocybin synthesis.
  • To demonstrate the scalability and robustness of the bioprocess.

Main Methods:

  • Utilized an overproduction strain of Aspergillus nidulans for psilocybin biosynthesis.
  • Characterized and optimized shake flask cultivation, focusing on rheology, oxygen, and power input.
  • Scaled up the bioprocess to a 7L stirred tank reactor, managing viscosity and oxygen transfer.
  • Employed a pressure reactor to enhance oxygen supply in the viscous culture broth.
  • Supplemented ammonium sulfate to overcome nitrogen limitation for protein biosynthesis.

Main Results:

  • Achieved a robust and efficient batch bioprocess for psilocybin production.
  • Produced 542 mg/L of psilocybin within 68 hours from glucose.
  • Demonstrated successful scale-up from shake flask to a 7L reactor.
  • Validated the effectiveness of pressurized bioprocesses for oxygen-limited, filamentous cultures.

Conclusions:

  • A scalable and efficient biotechnological process for psilocybin production was successfully developed.
  • This method offers a potential sustainable supply for pharmaceutical applications.
  • Pressurized bioreactors are suitable for cultivating shear-sensitive, filamentous organisms like Aspergillus nidulans.