Preparation Technology And Technology Research Of Zanthoxylum Oleifera Microcapsules

Zanthoxylum bungeanum is a herbal plant of Rutaceae, which is of great medicinal value and medicinal value. The main aroma, flavor and characteristic of pepper are mainly from its concentrated extract of pepper oil, but pepper oil is not stable when oxygen,light,humidity and temperature are high. Microencapsulation technology is an effective way to convert liquid materials into stable and easily soluble soluble solid powders. The microencapsulation of the pepper oil can change the resin of the pepper oil to the solid powder, protect the flavor substance from the direct heat, the light and the temperature,cause the oxidation and deterioration, prolong the storage period to prevent the loss of flavor components,improve the use and storage convenience. In this paper, pepper oil resin was used as the research object, and the emulsion was prepared by adsorption method, complex coagulation method and multi-layer emulsion assembly technology. The preparation technology and product of pepper oil resin were prepared by spray drying method and vacuum freeze-Quality of the study,screening out the best formula for the factory scale production of chili oil resin microcapsule products provide the basis. The main findings are as follows:1 According to the solubility , emulsifying property and stability test of the microcapsule wall material,22 kinds of screen materials were screened out and 8 kinds of high quality microcapsule wall materials were screened out. Three kinds of high quality protein wall materials were sieved out of eight kinds of protein-like wall materials: soybean protein isolate, concentrated whey protein and gelatin ; three kinds of high quality polysaccharides were screened out from five kinds of polysaccharide wall materials:chitosan, sodium alginate,maltodextrin; from 12 kinds of hydrophilic plastic wall material out of two high-quality hydrophilic plastic wall material: gum arabic, carrageenan.2 According to the emulsification effect of four kinds of emulsifier Span 60,Tween 80,soybean phospholipid and lecithin on pepper oil, it was found that soybean protein phospholipid had strong emulsifying property, less use and uniform emulsion,no unpleasant odor of Tween 80, As an emulsifier and to determine the ratio of soybean phospholipids: pepper oil resin 1 : 1 .3 Three kinds of emulsions were prepared by adsorption method, complex coagulation method and layer assembly technique. Drying of the emulsion by spray drying and vacuum freeze drying resulted in 30 kinds of microcapsule products of pepper oil resin.The basic properties of 30 kinds of microcapsule products were determined,and 12 kinds of microcapsule products were screened. Among them, there were 9 kinds of spray drying products and 3 kinds of freeze-drying products.4 For the screening of 12 kinds of microcapsule products for particle size, shape,stability, embedding rate , microbial colony determination. With the high embedding rate,good stability, the capsule structure as the screening condition,the embedding rate is good and the stability is strong as the main screening condition, and six kinds of high quality microcapsule products are obtained. The embedding rate is above 60%,after 50 days of storage of volatile oil retention rate of 40% or more;5 From the six kinds of high-quality microcapsule products in the best products for the spray-dried formula 3, the wall material ingredients for the soybean protein isolate:maltodextrin: carrageenan = 1 ; 4: 0.1, core wall material ratio 1 : 5 ; Emulsion preparation method for the adsorption method: the wall material in proportion to the distilled water,the total wall material content of 20wt%, water bath 60 ? dissolved, add pepper oil resin.(40MPa,50 ?); drying process conditions: spray drying into the air temperature of 170 ?, the temperature of 90 ?, the temperature of the air temperature of 90 ? ,Feed temperature 70 ?, feed pump speed 15r / min, compressed air 0.3MPa. The yield of the obtained product was 75.35%, the retention rate of volatile oil was 48.4%, the solubility was 91.2%, the yield was 87.06%, the moisture content was 1.1%, the encapsulated structure was good, the microbial colony Detection is not detected.The above results show that the preparation of the emulsion by the adsorption method,through the spray drying preparation of pepper oil resin microcapsule product technology is feasible. The product has low moisture content,high yield,strong water solubility, good form of capsule, high embedding rate, long storage time,and less susceptible to microbial contamination.