Spray-drying of Agaricus brunescens Blanching Effluent
Effluent from the blanching operation of Agaricus brunescens Peck was spray-dried as a byproduct to recover the nutrients.An orthogonal experiment was conducted to optimize the process,and a chemical analysis performed on the dried powder to evaluate its nutritional value.The results showed that (a)based on the antioxidant retention rate and product yield,β cyclodextrin was preferable tomaltodextrin as adrying aid;(b)the optimized processing conditions includeda hot air temperature at 150 ℃,a total solid content of 10%,aβ cyclodextrin addition of 37.50%,and an atomization pressure at 80 Mpa for the spray dehydration;(c)a productyieldof 61.36% could be realized;and,(d)the spray-dried powder obtained from the process mainly consisted of carbohydrates and proteins of 17 amino acids,as well as small quantities of calcium,iron andzinc,and 1.25 of polyphenols.