Research On Pressing Technology Of Peony

Flower pressing(plane drying flower) is the plane flower material which are processed by physical and chemical method to dehydrate, color-reserved pressing and drying, and it is a kind of plant art work after creative peocessing. Flower pressing realizes the long-time storage of flower which will not influenced by different seasons, and decorate our life with all kinds flowers and plants.Peony of Luoyang of Henan is world-known. Resources are extremely abundant, except that minority are used in pharmaceutial, view and the seedling in the past, the majority is in undeveloping state.That cause the waste of resources.With the flower pressing technology development, pressed flower can increase the value of the peony of " king in the flower ", creates the considerable economic income, thus spurs the economic growth of the area. Different colors peony was choosed for test material.Mechanics characteristic, color- reserve technology and drying with hot air characteristic were studied on the subjiect. The best plan of color-reserve was obtained through the reasearch. BP neural network model of hot air drying for pressed peony was established to forecast the drying of peony on line. The main research of this subject was as follows:(1)The petal of the peony had certain intensity and elasticity.According to the different kinds of peony,its intensity and elastic was different.Studied the menchanics chacteristic of peony,the longitudinal bearing capacity of peony was greater than the horizontal bearing capacity.(2)The peony of purple, pink and yellow was dealt with.These petals were sealed and keeped under the natural light for 5 months after the drying. The changes of color were compared with 5 months ago:Purple peony, the dry petals with different protecting the liquid of color had been put under the natural light for 5 months .â–³E value was measured on these petals.â–³E value was as follows to citric acid and regression model equation for L - cysteine density. Analysis of variance was prominent. After protecting the color of pink peony, the natural light illumination and evades the light preservation release set at 5 months later, flower petal color changed obvious different, the former change was obvious. With Hai huang illumination,L value and a value changed relatively little after 5 months, b value changed more obvious.(3)The research of hot air dry found that the mowasture content with hot air drying was influenced by peony initial quality, the temperature of thot-blast, the speed of wind, board hole density.(4)BP neural network model of hot air drying for pressed peony was established. The drying time, the hot blast temperature, the wind speed, the peony initial mass, board hole density was the input value and the peony mowasture content was an output. The model input level node was 5, the output nodal point number was 1, the concealed level neuron's integer was 25. Neural network neuron's transfer function concealment level for tangent S form function tansig, output level transfer function for linear function purelin, training function trainlm.