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Key Features of Good Quality Edible Fungi

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The ‘open window’ in stress-induced immunosuppression can present as part of a hypometabolic state that may be beneficial to the host. Acute stress can induce a beneficial immune trafficking response, while chronic stress can induce a state in which NK cell activity is down-regulated, and pro-inflammatory cytokines are up-regulated beyond the ‘open window’.

A patient population that presents a long-term weakened cellular immunity, as well as longer recovery times and abnormalities in metabolic functions, can functionally impair performance and/or recovery, while potentially being synonymous with Chronic Fatigue Syndrome (CFS). Activities that require high exertion also require increased metabolism, which at a cellular level, are capable of being pathological, protective, and regulatory depending on the stress response to stimulation, the environment, and length of time. Despite heterogeneity of factors, some of the underlying cellular responses are highly conserved, which may assist with targeted therapeutic strategies if metabolic states can be recognized by known underlying metabolites.

Factors such as adenosine depletion is an aspect in immunosuppression. Although, whether purine depletion or mTORC1 inhibition follow first, still needs to be determined for immuno-modulatory activity. Mechanistically immune-modulation involves mTOR upstream regulators that sense cellular purine status, by which restoration of intracellular adenine via exogenous purines reactivates mTOR and depletion of cellular purines inhibits mTOR. Consumption of BCAA’s/AA’s and nucleoside analogues that are sensed upstream (activation of cell membrane receptors) by signal transduction pathways, stimulate nutrient-sensitive and adaptive receptors to signal downstream (production of second messengers after cell membrane activation) where the exogenous nucleotides are a currency, in exchange, for the bioenergetics of sensing total nucleotide abundance in cells and protein synthesis or conversely lysosomal autophagy.

Glutamine is one of many currencies to these signal transduction pathways as growing mammalian cells use glutamine as a nitrogen source for TCA cycle metabolites where reactions replenish the TCA cycle intermediates that occur due to the breakdown of glutamine when glucose levels are low to maintain TCA cycle energy production. BCAA’s, glutamine and glutamic acid are abundant in edible mushroom protein content and needed for human physiological functions. Therefore, once the tough chitinous cellular walls of Fungi are thoroughly broken down they provide BCAAs to regulate mTOR-mediated protein, regulate and activate cytokines, as well as modulate the uptake of glutamine and glutamic acid for chitinase activation. If extracted products are incorporated, then the presence of heavier molecular weight β-glucans and secondary metabolites for immuno-modulatory and immuno-stimulatory activity via Dectin-1 cascades are acquired.

However, quality in fungi products is based on different measurements between species, powders vs extracts and fruitbody vs mycelium-based products. There are no unambiguous rules to grade mushroom product quality. Mycelium is the actual living organism, while the fruitbody is a reproductive structure that produces spores to continue the life cycle. Cultivating mushrooms commercially is not an easy undertaking. If medicinal species are grown, it becomes even more complex. Some species can take up to three months to harvest and have a range of quality measurements, scaling to genomics-assisted breeding. If quality measurements are not in place, your supplier obviously cannot qualitatively/quantitatively ensure good manufacturing practices.

The extractions and methodologies used set apart the bioactivity of the final product. β-glucan can exist as polysaccharide-protein complexes, having an assortment of proteins and sugars that are needed to fully activate immune cascades. Ethanol extraction is needed to obtain most of these protein compounds. The inhibitory and antioxidant activities can be significantly lower in hot water extracts than cold water extracts. Cold-water extraction before hot-water or ethanol extraction can yield higher antioxidant and stronger inhibitory activity than singular extracts. Thus, quality measurements depend on the type of product. Although an under-recognized measurement of mushroom extractions in all species is nucleoside content, as this content is what gives edible fungi their distinct umami (savory taste) flavor.

To conclude, the difference in bio-active ingredients make characterizing product quality not a singular reference or microparticulate aspect of β-glucan percentage, nucleotide content, or phenolic activity, however these do provide certainty to the practitioner/consumer. Key differentiators in this rapidly growing industry will be the company’s product acquisition or development methods. Due to the lack of regulation, knowing your supplier and the methods they have in place are essential for the quality and safety of consumption of mushrooms and related products.

Note: As some fungi display an incredible ability to bio-remediate (process used to treat contaminated media) heavy metals/toxic molecules, therefore finding 100% organic products is crucial.

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Key Features Of Good Quality Edible Fungi. (2019, Jun 27). GradesFixer. Retrieved January 12, 2021, from https://gradesfixer.com/free-essay-examples/key-features-of-good-quality-edible-fungi/
“Key Features Of Good Quality Edible Fungi.” GradesFixer, 27 Jun. 2019, gradesfixer.com/free-essay-examples/key-features-of-good-quality-edible-fungi/
Key Features Of Good Quality Edible Fungi. [online]. Available at: <https://gradesfixer.com/free-essay-examples/key-features-of-good-quality-edible-fungi/> [Accessed 12 Jan. 2021].
Key Features Of Good Quality Edible Fungi [Internet]. GradesFixer. 2019 Jun 27 [cited 2021 Jan 12]. Available from: https://gradesfixer.com/free-essay-examples/key-features-of-good-quality-edible-fungi/
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