Effect of Spray Drying Technique on Processing of <em>Stropharia rugoso-annulata</em> Farl: Murrill Blanching Liquid

Abstract

Blanching liquid from processing of Stropharia rugoso-annulata fruits were traditionally discarded as bio-waste although it contains certain amount of soluble nutrients. The discarding may result not only in environment pollution but also in loss of valuable mushroom nutrients. In this study, spray drying technique was applied to process the liquid; and the processing factors were optimized with Response Surface Methodology. The results showed that the factors on Inlet Air Temperature, Atomization Pressure and Total Soluble Solid Content were for 172°C, 920 bar and 15%, respectively, with the best spray drying efficiency for 60.26%. The products were estimated for the proper storage conditions based on the free radical scavenging activity for •OH. The results indicated that the storage temperature, lights and packaging are important for the products in maintaining their scavenging activity and the proper conditions to preserve the spray drying powder lasted for 60 days were at 0°C, no lights and with packaged. It is suggested that spray drying technique may play effectively for processing of any mushroom blanching liquid and the darkness and dryness are crucial for the drying powder preservation.

Whole Genome Sequence of an Edible Mushroom Stropharia rugosoannulata (Daqiugaigu)

“…Stropharia rugosoannulata is a widely cultivated edible mushroom in China and northern temperate zones throughout the world. S. rugosoannulata has a pleasant flavor, is rich in nutrients, and is a good source of proteins, mineral elements [1][2][3], and bioactive compounds, including polysaccharides [4][5][6][7][8][9], steroids [10][11][12], lectins [13], ceramides [14], and phenols [15], which possess antioxidant properties [4,16], endoplasmic reticulum stress-lowering capabilities [12], and hemagglutinin [13] and hypoglycemic activities [6]. In contrast to most wood rot edible mushrooms, S. rugosoannulata is mainly cultivated with straw and cornstalk.…”