December 10, 2023
Fungi as a sustainable and tasty alternative with potential to transform our food systems
Fungal biomass after fermentation on oat followed by harvesting (left) and sieving (right). Credit: Neda Rousta.

They are sustainable and healthy—filamentous edible fungi that are fed with, for example, oats. The latest addition to the world-leading research at the Swedish Center for Resource Recovery is Neda Rousta’s doctoral thesis on filamentous fungi with the potential to transform our food systems.

“In my doctoral studies, I focused on harnessing the potential of microbial fermentation, specifically edible such as Aspergillus oryzae, to address the current shortcomings in our food systems,” said Rousta, who defended her on 11 September.

Her work delves into various aspects, ranging from optimizing the production of fungal biomass using different substrates to investigating the synthesis of the substance L-carnitine by these fungi. Additionally, she explored the possibility of using fungal biomass to create sustainable and nutritious food products, such as fungi burger patties.

Improved nutritional content

In her doctoral thesis, Rousta shows the potential of filamentous fungi as a sustainable and healthy food source. Cultivation trials with Aspergillus oryzae on oat flour resulted in nutritious fungal biomass with an improved nutrient content.

In addition, her work demonstrated the fungi’s ability to synthesize bioactive substances such as L-carnitine, where Aspergillus oryzae outperformed other . Rousta was pleasantly surprised by the adaptability, productivity, and nutritious properties of the filamentous fungi.

Tackling societal issues

The University of Borås has been conducting world-leading research on fungi for more than 20 years in the area of Resource Recovery. The research relates to issues such as the environmental sustainability of our food systems and the promotion of human health. Today, conventional animal husbandry is a part of our food systems that contributes to the emissions of a large amount of greenhouse gases. Rousta’s work offers a potential solution by showing how fungal fermentation can offer sustainable, nutritious food alternatives, potentially mitigating emissions from traditional agriculture.

When asked about her plans after finishing her thesis, Rousta is eager to continue research.

“Whether in academia or in collaboration with the , I am determined to continue exploring the use of filamentous in sustainable and healthy food production. I hope for continued experiments, to scale up processes, and possibly work with practical implementations.”

A challenging but rewarding journey

When she reflects on her time as a doctoral student, Rousta describes it as both challenging and incredibly rewarding. Her deep dive into microbial fermentation and involved rigorous experimentation, data analysis, and interdisciplinary collaboration.

“The topic itself was fascinating and it feels meaningful to contribute to a more sustainable and healthy future for global ,” she concluded.

More information:
Harnessing the potential of filamentous fungi for sustainable and healthy food system. PhD dissertation. Högskolan i Borås.

Provided by
University of Borås

Fungi as a sustainable and tasty alternative with potential to transform our food systems (2023, September 27)
retrieved 27 September 2023

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