More Oyster mushroom pics, BDNF brain boosting benefits, and a simple recipe.

Golden oyster mushrooms also benefit colon cell health; and I think it was an Elm log. A nearby oak log didn't have any. Oyster mushrooms are said to be difficult to grow commercially... got elm?

I really did only have 24 hours to harvest the Golden Oyster mushrooms as the spored the next day and were starting to brown a little. Gnats or fruit flies loved the sweet smell and the log looked like it had been painted white with all the spores, and nearby leaves too.

Allergies to oyster mushrooms are possible. I seem to be doing okay so far and the brain clearing, nootropic benefits are noticeable. Golden oyster mushrooms (Pleurotus citrinopileatus) are good brain food.

“Ameliorating reduced brain-derived neurotrophic factor (BDNF) expression or maintaining high BDNF levels in the brain has been suggested to improve brain function in neurological diseases and prevent aging-related brain dysfunction. In this study, we found that a food-derived product, Aminothioneine® (AT), which is prepared from the extract of golden oyster mushrooms (Pleurotus cornucopiae var. citrinopileatus), increased Bdnf mRNA expression levels in primary rat cortical neuron cultures.” […]

“This result suggested that N-methyl-d-aspartate receptor-derived Ca²⁺ signals, including those mediated by extracellular signal-regulated kinase/mitogen-activated protein kinase and calcineurin, are the main contributors to Bdnf mRNA induction. In addition, AT increased cAMP-response element-binding protein (CREB) phosphorylation and the nuclear localization of CREB-regulated transcriptional coactivator 1 in neurons. Thus, AT can increase Bdnf mRNA expression via Ca²⁺ signal-induced CREB-dependent transcription in neurons. Because AT is a food-derived product, increasing and/or maintaining BDNF levels in the brain by daily intake of the product could be possible, which may be beneficial for neurological and aging-related disorders.” (Fukuchi, et al., 2021)

• Aminothioneine, a product derived from golden oyster mushrooms (Pleurotus cornucopiae var. citrinopileatus), activates Ca²⁺ signal-mediated brain-derived neurotrophic factor expression in cultured cortical neurons. (Fukuchi, et al., 2021)

• Polar Lipid Fraction from Golden Oyster Mushrooms (Pleurotus citrinopileatus) Suppresses Colon Injuries from Inflammatory Stresses in vivo and in vitro. (Yamashita, et al., 2020)

I think this was an elm tree; and another type of ‘oyster’ but not true oyster mushroom (no gills on the stems) is known to grow on elm trees. These dried mushrooms may have been a first flush of the Golden oyster mushrooms (Pleurotus citrinopileatus), that led to an earlier ‘painting’ of white spores and the current bountiful harvest. I froze about 24 cups of oyster mushrooms sauteed with onion.

True oyster mushrooms have gills that run down the stem from the inner cap, rather than having a more standard stem without gills. Elm Oyster mushrooms grow wild but don’t have the gilled stems. (foragerchef.com/elm-oyster-mushroom/)

Golden oyster mushrooms (Pleurotus citrinopileatus), inner cap and stems showing gills.

The gills of Golden oyster mushrooms (Pleurotus citrinopileatus) travel down the stems unlike other typical mushrooms.

Golden oyster mushrooms (Pleurotus citrinopileatus)

I sauteed ~ 4 cups, 2 large clusters of oyster mushrooms with a couple spoonfuls of avocado oil and a half or quarter large onion which I sauteed for a few minutes prior to adding the rinsed and chopped mushrooms.

The color of the Golden Oyster mushrooms fades as it cooks - these just went in the pan. Three minutes is adequate for eating or freezing, I cover the pan and steam rather than fry with hotter dry heat.

Golden oyster mushrooms (Pleurotus citrinopileatus)

Golden oyster mushrooms (Pleurotus citrinopileatus)

Golden oyster mushrooms (Pleurotus citrinopileatus) are good brain food and the polar/charged lipids are good for colon cells too.

“Dietary supplementation with the total or polar lipid fraction alleviated DSS-induced chorionic crypt injury as determined by morphological observation, while dietary supplementation with the neutral lipid fraction did not produce such effects. In the in vitro study, using differentiated Caco-2 cells as the colon model, treatment with the total or polar lipid fraction suppressed cell decrease by lipopolysaccharide (LPS)-induced apoptosis whereas treatment with the neutral lipid fraction did not. Moreover, accumulation of glucosylceramide (GlcCer), a fungal sphingolipid, was observed in the intestinal cells after treatment with polar lipid fraction. These results suggest that the active components of GOMEE that suppress colon inflammation are polar lipids, especially GlcCer. The structure of mushroom GlcCer differs from that of the plant counterpart and is therefore expected to exert different food functions.” (Yamashita, et al., 2020)

Disclaimer: This information is being shared for educational purposes within the guidelines of Fair Use and is not intended to provide individual health care guidance.

Reference List

Fukuchi M, Watanabe K, Mitazaki S, Fukuda M, Matsumoto S. Aminothioneine, a product derived from golden oyster mushrooms (Pleurotus cornucopiae var. citrinopileatus), activates Ca²⁺ signal-mediated brain-derived neurotrophic factor expression in cultured cortical neurons. Biochem Biophys Rep. 2021 Dec 13;28:101185. doi: 10.1016/j.bbrep.2021.101185. PMID: 34977362; PMCID: PMC8683675. https://pmc.ncbi.nlm.nih.gov/articles/PMC8683675/

Yamashita S, Seino T, Inobe M, Jutanom M, Matsumoto S, Kinoshita M. Polar Lipid Fraction from Golden Oyster Mushrooms (Pleurotus citrinopileatus) Suppresses Colon Injuries from Inflammatory Stresses in vivo and in vitro. J Oleo Sci. 2020;69(7):751-757. doi: 10.5650/jos.ess20050. PMID: 32612025. https://www.jstage.jst.go.jp/article/jos/69/7/69_ess20050/_article