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WHO established a process for production of fungal biomass for human food? 

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The quality of fungal biomass appeared to be a key parameter in the system.
The potential uses of fungal endophytes could involve biopulping and wood pretreatment for bioethanol production, among others.
Fungal pretreatment of biomass was previously reported to be effective, with the advantage of having a low energy requirement and requiring no application of additional chemicals.
Therefore, we suggest that this modified NFT culture system would be suitable for fungal biomass production on a large scale with a view to additional aeration by intermittent nutrient supply, optimum Psupply, and a use of glass beads as support materials.
The process involves controlled solid-state fermentation which is optimized for the production of culinary and medicinal mushrooms, thus providing food of high organoleptic and dietetic value.
Therefore, we conclude that the initial increase of fungal biomass is caused by stopping agricultural management activities.
Therefore, we expect an increase of fungal biomass after cessation of cultivation to values of a natural ecosystem.
Consequently, for estimation of fungal biomass in tissues, this technique is of limited value.
This suggested that the estimate of fungal biomass was reasonable.

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