Studies On Prediction Models For Shelf-life Of Modified Atmosphere Packing Agarivus Bisporus At Circulation Processing

Agaricus bisporus, white color and fleshy body, full of variety of nutrient elements for human, is highly popular in consumers. But postharvest agaricus bisporus is easy to lose goods value due to its active effect after ripening, which influences the circulation of the products. Based on the study of the change rules of the quality indexes of agaricus bisporus which were storaged at different gases proportion and different temperatures, the shelf-life prediction models of Agaricus bisporus were estabilished. At the same time, simulate quality loss of agaricus bisporus at the circulation to provide theory basis for quality control of the circulation process. The results of the study were as follows.1. Determinate the physical and chemical indicators (color, browning degree, hardness, etc.)of the postharvest agaricus bisporus packaging by gas proportion of three groups at different gas packaging which storages at 4?. Through data analysis, the optimum gas ratio of three modified atmosphere packaging groups is 9.6%O2/6.9%CO2/83.5%N2.2. The postharvest agaricus bisporus packaging with the optimum ratio of gas was storaged respectively at 4, 10, 16 and 20?. The quality indexes of agaricus bisporus were determined, and the experimental dates were fitted by statistics software.The results show that the dynamics quality model of agaricus bisporus established with the physical and chemical indicators, such as L*, ?E, b*, browning degree, hardness and total phenol content has good fitting curve between measured and predicted values, the average relative error (P) is less than 10%; The dynamic model can predict the deterioration of postharvest agaricus bisporus quality.3. By analyzing the correlation between sensory scores and the physical and chemical indexes, the shelf life prediction model with L * value was established. Average relative error is less than 10%, indicating that the shelf life prediction model is feasible. L * values are convenient and quick to measure, and the model provides new technology for circulation of agaricus bisporus.4. The left shelf-life of agaricus bisporus was calculated by prediction model after circulation and quality classification standard was established. These applications can provide the specific theoretical guidance on the circulation and sales of agaricus bisporus.