geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Influence of selected cultural factors and postharvest storage on ergothioneine content of common button mushroom Agaricus bisporus (J. Lge) Imbach (Agaricomycetideae)


, : Influence of selected cultural factors and postharvest storage on ergothioneine content of common button mushroom Agaricus bisporus (J. Lge) Imbach (Agaricomycetideae). International Journal of Medicinal Mushrooms 9(2): 163-176

L-ergothioneine (ERGO) is a biologically active antioxidant produced by certain fungal species and mycobacterium. The precursors to the synthesis of ERGO are the amino acids histidine, cysteine, and methionine. The objective of this study was to determine the influence of selected cultural and postharvest practices on the ERGO content present in button mushroom Agaricus bisporus. In the first experiment, the effect of supplements added to the compost was studied. Mushrooms were grown in tubs containing 22.7 kg of compost supplemented with protein-rich corn gluten at 2% and 4% of the dry weight of compost and amino acids (methionine [5 mM], cysteine [5 mM], histidine [10 mM]), and these mushrooms were compared to an untreated control. Further experiments were conducted with compost supplemented with the same amino acid(s) individually and in combination at various levels. A third experiment was conducted using various levels of histidine added to deep bags of compost. High-performance liquid chromatography was employed for quantification of ERGO, and the results indicated that protein supplement treatments had no significant effect on the amount of ERGO produced by the mushrooms, but the addition of histidine to compost in deep bags significantly increased the amount of ERGO produced. In addition, ERGO content increased significantly with each flush of the crop cycle. Further experimentation demonstrated that the extent of mycelium growth in compost significantly increased the amount of ERGO produced. The results further indicated that ERGO could be increased by up to 1.3 mg/g dry weight in later flushes by several stress factors placed on the mycelia, such as dry compost, indicating that ERGO may be a stress factor. A postharvest shelf-life study demonstrated that ERGO significantly decreased during postharvest storage for up to 6 days at 12 degrees C.

US$29.90


Other references

Moreau, C., 1995: The molds. Bourgeois, C M [Editor], Leveau, J -Y [Editor], Fung, D Y C [Editor] Analysis and Control Methods for Foods and Agricultural Products; Microbiological control for foods and agricultural products 277-289

Relimpio Ferrer F.; Ferrari Marquez J.L.; Lopez Ramirez A., 1988: Transhiatal splanchnicectomy in the treatment of refractory pain of pancreatic disease preliminary note. The authors present their initial experience (10 cases) with the use of bilateral transhiatal splanchnicectomy described by Dubois, a procedure that resolves the technical drawbacks of other techniques. They describe the technique and indicate how...

Anonymous, 1974: National conference of hospital medical staffs. British Medical Journal 2(5921): 129-135

E.O.S.modelkina; V.I.T.irkin; N.V.P.okazova, 2011: Effect of Lysophosphatidylcholine on ?-Adrenoreactivity of Rat Aorta Smooth Muscles. In experiments on rat aortic ring segments, lysophosphatidylcholine in concentrations of 2? ?1<sup>?6</sup>, 2? ?1<sup>?5</sup>, and 2? ?1<sup>?4</sup> M did not suppress the tonotropic effect of phenylephrine (...

Nemet, D.; Connolly, P.H.; Galassetti, P.; Rose Gottron, C.; Larson, J.K.; Pescatello, A.M.; Cooper, D.M., 2003: Nutrition plays a major role in the GHfwdarwIGF-I response to exercise. Medicine & Science in Sports & Exercise 35(5 Supplement): S244, May

Wahl, P.; Lami, H., 1967: Fluorescence decay of the I-dimethylaminonaphthalene-5-sulphonyl-lysozyme conjugate. The fluorescence decay of the I-dimethylaminonaphthalene-5-sulfonyl group attached to lysozyme has been measured by the single photoelectron method. Three preparations of the fluorescent conjugate have been made from the same lysozyme sample. Anal...

Eidinoff, M.L.; Knoll, J.E.; Marano, B.J.; Klein, D., 1961: Pyrimidine studies. III. Effect of several compounds with antitumor activity on utilization of precursors for synthesis of nucleic acid pyrimidines. Cancer Research 21: 1377-1385

Hoffmann, G.S.hulzke, D.K.atzsch, G.K.ein, W.L.tze, G.P.tschke, K., 1980: Experiences in the use of stem stabilizers during the 1979 vegetation period, and suggestions for 1980. Feldwirtschaft 21(4): 175-179

I.V.geler; P.B.ukes; V.B.rggraaf, 2013: Evaluation of mitigation strategies for nitrate leaching on pasture-based dairy systems. Dairy farms are under pressure to increase productivity while reducing environmental impacts. We used the DairyNZ Whole Farm Model (WFM) and APSIM to evaluate the effect of mitigation strategies within an efficient farm (EF) in the Waikato region,...

Rogers Gaillard Sherburne, 1913: Overthrust fault in nearly flat strata. Journal of Geology Pages 534-536