Non-destructive rapid prediction method and device for fruit shelf life and freshness
A shelf life and fruit technology, applied in the field of spectral analysis, can solve the problems of low precision, continuous change without detailed and in-depth research, etc., and achieve the effect of improving efficiency, reducing loss and waste, and improving accuracy
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Embodiment 1
[0105] Example 1 Establishment of shelf life of Fuji apples and discriminant analysis of freshness
[0106] combine Figure 1 ~ Figure 4 , to analyze the formulation of shelf life and freshness discrimination of Fuji apples. The agricultural products described in this embodiment are apples, preferably Fuji apples produced in Changping District, Beijing. Ripe Fuji apples are picked in the orchard, and the day of picking is recorded as "Day 0". Every day after that, the number of apple storage days increases by 1. The near-infrared spectrum data of 8 Fuji apples were collected each time, and the data was collected once a day at most, and the ambient temperature and relative humidity data were recorded at the same time. After the end of the experiment, a total of 32 days have passed, and the number of observation / collection of spectral data is 25 times. The ambient temperature and relative humidity are statistically analyzed. The minimum value of the ambient temperature is 19....
Embodiment 2
[0133] Example 2 The formulation of the shelf life of Wanglin apples and the discrimination of freshness
[0134] combine figure 1 and Figure 5 ~ Figure 7 , and analyzed the formulation of shelf life and freshness discrimination of Wanglin apples. The agricultural products described in this embodiment are apples, preferably Wanglin apples produced in Changping District, Beijing. Ripe Wanglin apples are picked in the orchard, and the day of picking is recorded as "day 0". After that, the number of storage days for apples increases by 1 every day. The near-infrared spectrum data of 8 Wanglin apples were collected each time, and the data was collected once a day at most, and the ambient temperature and relative humidity data were recorded at the same time. After the end of the experiment, a total of 32 days have passed, and the number of observation / collection of spectral data is 25 times. The ambient temperature and relative humidity are statistically analyzed. The minimum ...
Embodiment 3
[0161] Embodiment 3 Development and application of non-destructive and fast analyzer for freshness of fruit
[0162] In order to realize the prediction of apple freshness and shelf life, the present invention proposes a design scheme of a non-destructive fast analyzer for fruit freshness. combine Figure 8 ~ Figure 10 The design scheme of the non-destructive and fast analyzer for fruit freshness is described.
[0163] The non-destructive fast analyzer for freshness of fruit includes an optical system, a circuit system, a control system, a data storage and processing system, and the analyzer includes a probe part 1-1, a handle part 1-2 and a base part 1-3. The analyzer stores the data collected by the optical system, obtains the sample prediction data according to the built model, calculates the weighted correction prediction value, and judges the freshness of the fruit sample through the discrimination threshold.
[0164] The optical system includes a spectrometer 2, a spect...
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