AbstractThe CO2production and soluble carbohydrate content were studied in the cultivated mushroom (Agaricus bisporus) during storage at 18 °C. The pattern of postharvest respiration was seen to be dependent on the maturity of the sporophore at harvest. A post‐harvest respiratory peak was observed and this appeared to correspond with the phase of rapid gill development which occurs after harvest of immature, fruit bodies. The disappearance of significant quantities of mannitol from the sporophore during storage seemed to indicate that this was one of the main respiratory substrates during storage, although it was evident that other substrates were utilised. The results obtained are discussed in relation to the postharvest development of the sporophore and the function of its tissu
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