不同基质对富硒大球盖菇的营养品质及蛋白质营养价值的影响OA

To clarify how substrate composition influenced the nutritive profile and protein nutritional value in Stropharia rugosoannulata under selenium enrichment,the nine agricultural by-products were used to cultivate Stropharia rugosoan-nulata,rice straw,corn stalks,corn cobs,weeds,peanut stalks,Lentinus edodes residue,Pleurotus ostreatus residue,Auric-ularia auricula waste substrate and bamboo leaves.The results showed that selenium-enriched cultivation significantly in-creased both yield and selenium concentration of Stropharia rugosoannulata(P<0.05).Specifically,the selenium content of Stropharia rugosoannulata cultivated with raw corn cobs was the highest,reaching 154.41 mg/kg,which represented a 203.53-fold increase compared with the non-enriched control grown on the same substrate.Significant variations were ob-served in the nutritional quality of selenium-enriched Stropharia rugosoannulata cultivated with different substrates.Sele-nium-enriched Stropharia rugosoannulata produced on corn cobs and weeds contained significantly more crude fat(P<0.05),whereas those cultivated on corn stalks and bamboo leaves showed higher crude protein but lower crude fibre(P<0.05).Regarding protein quality,fruiting bodies from spent Pleurotus ostreatus residue exhibited an essential amino-acid pattern closest to the WHO/FAO reference and the highest SRCAA(amino-acid ratio coefficient score).The highest AAS(amino acid score)and CS(chemical score)were obtained with mushrooms grown on Auricularia auricula waste sub-strate.The comprehensive evaluation showed that the selenium-enriched product from Auricularia auricula waste substrate had the highest protein nutritional value,and selenium-enrichment cultivation improved its protein nutritional value.This study provides a theoretical basis for the application of selenium-enriched Stropharia rugosoannulata and its development as a new protein resource.