Study On Processing Technology Of Solid Beverage From Cordyceps Militaris

In this experiment, the ultra micro powder of cultured Cordyceps militaris was used for studying on process of the solid beverage. Two kinds of the process was determined:One was that Cordyceps militaris ultra micro powder was directly used for studying on suspension sollid beverage. Sensory evaluation was used as the standard. The orthogonal experiment indicated that the optimal amount of the raw material was47.17%Cordyceps militaris ultra micro powder,28.30%maltodextrin,4.72%acesulfame,5.66%citric acid,3.77%malic acid,3.77%xanthan gum,1.89%CMC,1.89%konjac gum and2.83%sodium alginate. The product had good quality with fine particles, uniform powder, golden yellow color and it could stably suspend in water with fragrance of Cordyceps when the proportion of product and water properly was1:100(1g of product with100ml of water).The other was that Cordyceps militaris ultra micro powder main active ingredient was extracted and freeze-dry powder of the crude extract was used for studying on instant solid drink. The extraction process of the main active components in Cordyceps militaris ultra micro powder was optimizated. Using the method of response surface analysis, extracting condition was optimal as follow:temperature56.7℃, time2.05h and extraction2times. Under this condition, the extracting rate was64.38%. Using extracting freeze-dried powder as raw material and the sensory score as the standard, the adding amount of raw material was optimized by orthogonal experiment:67.57%Cordyceps militaris extracting powder,2.03%acesulfame,10.14%citric acid,2.03%malic acid. By experiment of solid beverage’s dispersion and stability, the product has good fluidity and stability when the amount of maltodextrin and xanthan gum were13.51%and4.73%, respectively. The product had good quality when the proportion of product and water was1.5:100(1.5g of product with100ml of water).The microwave sterilization conditions of two kinds of solid beverage was studied. The optimal sterilization process was microwave power700W, frequency2450MHz, temperature40℃, continuous sterilization for3times and every time20s. The physicochemical properties of two kinds of solid beverage was studied by angle of repose injection method and bulk density of experimental. The repose angle of Cordyceps militaris ultra micro powder solid beverage was35.4°and the bulk density was0.5367g/mL. The repose angle of Cordyceps militaris extracting powder solid beverage was37.2°and the bulk density was0.4682g/mL. The Cordyceps militaris ultra micro powder solid beverage’s liquidity was better than Cordyceps militaris extracting powder solid beverage’s but its solubility was lower than the latter. Finally, two kinds of solid beverage’s change during storage was studied by liquidity and color variation method. Cordyceps militaris ultra micro powder solid beverage and Cordyceps militaris extracting powder solid beverage were stored for respectively250days and180days at room temperature.