The Development Of The Pleurotus Eryngii Mixing Powder

Pleurotus eryngii is perishable and its shelf life is short as it has rich nutrient and high water content. In order to extend the Pleurotus eryngii industry chain and improve its added value, the Pleurotus eryngii mixing powder were developed. We expect the product could provide some theoretical basis for the development and production of enterprises. The results of the study are as follows:1.The nutritional components of Pleurotus eryngii were determined, the results showed that the content of the ash, fat, protein, total sugar was 3.49%,4.37%,21.63%,21.63% respectively. The content of calcium, iron, zinc, copper was 9.174,0.341,0.172,0.341 mg/100 g respectively. The content of the total amino acid was 2.52 g/100 g, and the amount of essential amino acids was 1.09%, accounting for 43.25% of total amino acids; the amount of non-essential amino acid was 1.43%, accounting for 56.75% of total amino acids.2.Using the HS-SPME and GC-MS to analysis the volatile components in Pleurotus eryngii. We identified that there were 16 kinds of volatile compounds in the Pleurotus eryngii mixing powder which included 7 kinds of aldehyde substances,3 species of hydrocarbons,2 kinds of alcohols, two types of ester substances,1 sort of furan and 1 kind of phenol. The peak area of Aldehyde material was 29.15%, and they were the main flavoring substances in Pleurotus eryngii. The contribution of Aldehyde material to the Pleurotus eryngii flavor was biggest due to its low flavor threshold.3. Through the response surface design and principal component analysis, we can conclude that the best proportion of three ingredients:maltodextrin 11.7877%, beta cyclodextrin 3.7863%, sodium alginate 0.1849%.4. Using sensory properties as indicators, through mixing design and fuzzy comprehensive evaluation method, as well as the actual situation in production and processing, we concluded that the optimum formula of Pleurotus eryngii mixing powder was as follows:Pleurotus eryngii 43.8%, fresh milk 40%, maltodextrin 12%, ?-cyclodextrin 4%, sodium alginate 0.2%. Under this formula, the water content of Pleurotus eryngii mixing powder was 3.37% and the solubility was 68.85% which were in line with the product quality standards.5. Through studying the Pleurotus eryngii mixing powder which processed by the best technology and the best formula, we determined its nutritional composition, physical and chemical properties. The results showed that the Pleurotus eryngii mixing powder retained the nutrition of raw materials, and its reconstitution properties, dispersity, stability, solubility and hygroscopicity were up to the industry standard.