Study On Non-destructive Measurement Of Agaricus Bisporus's Qualities With Infrared Diffuse Reflectance Spectroscopy

The Agaricus bisporus not only tastes delicious,is of nutrition richly,also has certain medicinal value, is one of vegetables that people like in daily life. The browning degree, hardness, solube solid, moisture, ash, protein of Agaricus bisporus has a great impact on Agaricus bisporus's flavor quality and taste. At present it is urgent to understand and grasy how many the content of soluble solid, moisture, ash, protein in the agaricus bisporus in its quality breeding, food processing and storage and transportation field. The traditional analysis methods belong to destructive measurement, and exist shortcomings of experiment trouble, time-consuming and laborious, and expensive drugs with experiment could easily lead to pollute environment, and so on. So it is of great scientific significance and practical value to explore green, rapid, nodestructive method to determine agaricus bisporus interior quality based on the near-infrared spectroscopy technology.Based on Near Infrared Spectroscopy technology, the research of nondestructive methods about testing browning, hardness, soluble solids, moisture, ash, protein of agaricus bisporus was studied by using of NIRcal software.The main conclusions are as follows:1.Its is more conducive to the establishment of the model, after removed the abnormal samples the model has the higher precision.2.In order to search an appropriate pretreatment method to nondestructive mensure the interior quality of agaricus bisporus, the effect of4conventional pretrement methods on PLS calibration model has been compared, it can be obtained that the second derivative was the best effect on establishing agaricus bisporus hardness, soluble solids and the moisture quantitative analysis model; the MSC was an efficient method to nondestructive measure to ash, a*, b*, protein in agaricus bisporus with near-infrared spectroscopy; the first derivative was the best effect on establishing agaricus bisporus L*quantitative analysis model. The quantitative analysis models were established by application of partial least squares, in order to measure interior quality of agaricus bisporus nondestructively by near infrared spectroscopy based on the optimization pretreatment methods.3.The principal components of the model was determined by RMSECV/RMSEP. The RESECV/RMSEP is smaller, the stronger of the model predictive ability. Select the smallest principal component corresponding to the minimum value of RMSECV/RMSEP.