A method for predicting strawberry quality grade based on ethanol sensor

Abstract

The invention relates to a method of predicting quality grade of strawberries under a storage condition of 4 DEG C on the basis of an ethanol sensor and belongs to the field of postharvest quality control of agricultural products. In the method, the ethanol sensor is used for extracting the smell information of an unknown sample and a model of predicting decay index of the strawberries on the basis of the concentration of the ethanol through analysis of the relationship of the volatile ethanol concentration to the decay index during the decay process of the strawberries. A tester introduces the extracted smell information into the model to obtain the decay index of the unknown sample and further determine the quality grade of the sample according to the decay index of the unknown sample, thereby performing corresponding sample treatment. The method can be used for loselessly and quickly testing the quality of the strawberries, and meanwhile provides a guidance for the loseless quick test of the quality of other fruits and vegetables.

Description

[0001] Technical field: [0002] The invention relates to a method for detecting the quality grade of strawberries based on an ethanol sensor, which belongs to the field of postharvest quality control of agricultural products, and particularly refers to the method based on ethanol sensor technology, which can determine the quality grade of strawberries by extracting and analyzing the smell of strawberries stored at 4°C. [0003] Background technique: [0004] Strawberry is a non-respiratory climacteric fruit belonging to the Rosaceae family and the genus Fragaria. Strawberries have high water content, thin skin and tender flesh. After harvesting, strawberries are prone to water loss and shrinkage, aging and deterioration, and are susceptible to pathogenic bacteria infection and mechanical damage and rot, thus losing commodity value and limiting shelf life. And in the early stage of storage, individual fruits often rot while other fruits are intact. If the rotten fruits can be d...

AI Technical Summary

Problems solved by technology

[0006] As an important means of non-destructive testing, the electronic nose has the characteristics of objective, accurate and fast evaluation of odor and good repeatability. It has been widely used in the quality testing and grading of agricultural and livestock products. Replacement, high cost; and multiple sensors collect sample information at the same time, the amount of data is large, and the result analysis is cumbersome

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