The Research On The Key Technology Of Microencapsulation Pine Needle Jiaosu Powder

Pine needle Jiaosu is rich in active substances and it can be a good active ingredient supplement by drying.However,there are few researches on pine needle Jiaosu powder,the preparation effect of direct spray drying method is poor,and the nutrient release law is not clear.In order to improve the powder quality and nutritional protection of pine needle Jiaosu powder,and to understand the release law of active ingredients of pine needle Jiaosu powder,This research uses W/O/W double emulsification technology to prepare pine needle Jiaosu into W/O/W emulsion and then spray-dry to prepare pine needle Jiaosu powder.From the preparation process of W/O/W Jiaosu emulsion and the process in the spray drying process Systematic research was carried out in four aspects:optimization,in vitro digestion and release dynamic model of pine needle Jiaosu powder,and application of product preparation meal replacement powder.the result shows:1.Analysis of preparation process conditions of W/O/W type Jiaosu emulsion:A two-step emulsification method is used to prepare W/O/W type Jiaosu emulsion.Using 3:1 lecithin and Span 80 as emulsifier,2:1 glycerin and propylene glycol as co-emulsifier,Km is 3,Jiaosu and emulsifier are mixed at 6:1,tea oil and Jiaosu ratio It is 4:1,emulsification is carried out under the condition of shear speed of 13000 r/min,and W/O colostrum with better stability can be obtained.Using 4:1 soy protein isolate and maltodextrin as the external water phase emulsifier,the ratio of the external water phase emulsifier and W/O is 3:1,the shear rate is 8000 r/min,and the stability can be obtained good W/O/W type Jiaosu emulsion.2.Optimization of the process conditions of pine needle Jiaosu powder:In this experiment,the physicochemical properties of pine needle Jiaosu powder were comprehensively scored through principal component analysis,combined with single factor experiment and response surface analysis,to optimize the spray drying process conditions.When the ratio of W/O type Jiaosu colostrum oil to water is 4.24:1,the ratio of soy protein isolate to maltodextrin is 4.10:1,the ratio of drying aid to Jiaosu is 2.97:1,and the air inlet temperature is 176.3?,the pine needle Jiaosu powder obtained is comprehensive the highest score.3.In vitro digestion experiment analysis:Compared with direct spray drying,the release cycle of pine needle Jiaosu powder obtained by spray drying after W/O/W double emulsification treatment is increased by at least 50%.In the digestion process of the simulated gastric environment,the release law of pine needle Jiaosu powder satisfies the Retger-peppas equation,the goodness of fit reached 0.9924,and the fitting equation was Q=2.301t0.545;during the digestion process of the simulated intestinal environment,the release law of pine needle Jiaosu powder It conforms to the Hixcon-Crowell corrosion equation,the goodness of fit reaches 0.9974,and the fitting equation is(100-Q)1/3=-0.015t+4.665.Studies have proved that the pine needle Jiaosu powder obtained by spray drying after W/O/W double emulsification has good gastric digestibility,has good long-acting slow-release characteristics,can effectively protect the sensitive biological active ingredients of the stomach environment,and improve the biological Utilization rate.4.By mixing pine needle Jiaosu powder,chestnut powder,sesame powder,and konjac powder in a ratio of 5:3:1:1,a meal replacement powder with good brewing characteristics,balanced nutrition and high sensory evaluation can be obtained.