| The horseshoe bamboo shoots is appropriately used for the canning as its crisp texture and low tyrosine. To ensure the process quality, a large number of scraps are produced by processing factorys every year, and these scraps often have the highest part dietary fiber content of the of horseshoe bamboo shoots. But problems such as the wall is thick and wooden fibrosis degree is high, the soluble fiber composition and insoluble constituents ratio is not reasonable to make full use of its physiological function. The compound enzymatic hydrolysis of integrated technology combined with cryogenic grinding is used in this article, through to the bamboo shoots dietary fiber to the wall with enzymolysisand modification treatment, preparation of a highly active dietary fiber, the modification methods and the system analysis of the functional properties of dietary fiber, the effects of the research content and the results are as follows:(l)Cellulose enzyme, woodiness enzyme and the xylanase composite enzyme was breaking walls, and through the material to mix proportion, pH value of the selection and the response surface test establishing mathematics model and simulation, the selection of composite enzyme ratio for3:1:1, enzymolysis pH5.5; And the response surface and contour map get is discussed, the regression equation of the Y was using Y=23.99168+0.596433X1+1.31202X2+1.529359X3-1.4047991X,-1.0866X2X2+0.6125X2X3-0.892146X3X3The optimum process parameters was obtained:temperature of enzymolysis46.5℃enzyme content0.81%, enzymolysis time4.7h. In this process conditions, horseshoe bamboo shoots SDF content is reached24.8%.(2) Combined with the single factor analysis and the response surface method optimization composite enzyme solution, SDF dissolution rate and flour rate is choosed as the evaluation index, the result of SDF dissolution rate and the wall is related to the present rate relations is found; After optimization of process parameters was obtained:rotary speed3500r/min, freezing temperature-12.5℃, material moisture content7.5%, and the influence significance was:material moisture content> freezing temperature> rotary speed. The SDF dissolution rate and the wall rate is4.3g/100g and44%.(3)Two orthogonal rotating combination test method was used to determine the compound enzymatic hydrolysis combining the best technology of frozen shattered the parameters, through the data model, the regression equations was useing Y1=8.5552+0.23002X1-0.071325X2+0.182192X3-0.198603X1X1+0.045X,X3-0.191532X2X2-0.189764X3X3Y2=94.38592+2.14876X1-0.670654X2+1.714416X3-1.561517X1X1+0.4625X1X3-1.649904X2X2-1.473128X3X3It was concluded that when X1=0.640870level, X2=0.162847level, the X3=0.589259level is optimal when Y (maximum) value, the optimal parameters is obtianed:rotary speed3600r/min, freezing temperature-10.8℃, material moisture content11.7%;The optimal conditions were found in this process condition:SDF dissolution rate8.68g/100g, flour rate96.5%.(4) Material without treatment, treatment by compound enzymatic hydrolysis, treatment by cryogenic grinding and treatment by cryogenic grinding combined with compound enzymatic hydrolysis were compared on multiple index analysis, discover the wall after the modification of the horseshoe bamboo shoots dietary fiber, its the hydraulic oil absorption, strength, and cholesterol absorption ability, ion adsorption ability based and heavy metal ions adsorption ability were significantly ascension. This topic technology process was used after the water chestnut bamboo shoots dietary fiber the hydraulic5.32g/g, oil absorption force3.24g/g, adsorptive cholesterol8.87mg/g, NO2-adsorption1.08mg/g, adsorption heavy metal ion Cd2+39.1μmol/g, Pb2+38.2μmol/g, Cu2+35.5μmol/g. |
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