A method of dividing the fresh cut flower water in Tangyu Pu

A measurement method and fresh-cut flower technology, applied in the direction of measuring devices, analysis materials, test sample preparation, etc., to achieve the effect of optimizing fresh-keeping technology, improving the ratio of preservatives, and satisfying real-time feedback

Active Publication Date: 2022-08-05
AGRO BIOLOGICAL GENE RES CENT GUANGDONG ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report on the determination of the water content, water state and dynamic changes of fresh-cut flowers.

Method used

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  • A method of dividing the fresh cut flower water in Tangyu Pu
  • A method of dividing the fresh cut flower water in Tangyu Pu
  • A method of dividing the fresh cut flower water in Tangyu Pu

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1: Moisture content during the opening process of gladiolus florets

[0039] ⑴ parameter debugging.

[0040] The first step: Due to the requirements of the uniformity of the magnetic field of the instrument, the height of the sample must be less than the set Fov value of the field of view. The coil diameter of the NMI20 low-field nuclear magnetic resonance detector used in the test is 15mm. In order to ensure the accuracy of the sample detection results, the range of the sample loading height should not exceed 2.5cm. During the actual test, it was found that the cut flower has a high filling value, and it is difficult to compress to the detection height when the sample size is higher than 0.6g. So cut the petal sample into 1cm 2 Small piece, take 0.5g and put it into a dry and clean NMR sample tube with a diameter of 15mm and seal it.

[0041]The second step: use a single 90-degree radio frequency pulse to excite the sample, and receive the hard pulse FID sig...

Embodiment 2

[0050] Example 2: Moisture status of different organs and tissues of gladiolus cut flowers and their postharvest distribution changes

[0051] ⑴ sample collection and determination. Cut the bract and petal samples into about 1cm 2 Take about 0.5g of each small piece, cut the stem section into a height of no more than 2cm, and put it into a dry and clean NMR sample tube with a diameter of 15mm and seal it. Through the CPMG sequence, the first point signal value is extracted, and the NMR signal amplitude and transverse relaxation time T2 of each relaxation component are obtained by inversion, and the sample data is collected.

[0052] ⑵ data analysis. The characteristic peaks of gladiolus cut flowers were obtained, and the NMR signals with T2 values ​​of 1 to 10, 10 to 100, and 100 to 10000 ms were analyzed as bound water (T21), difficult-to-flow water (T22) and free water (T23). Amplitude and T2 analysis of sample water content. There are differences in the NMR signal ampli...

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Abstract

The invention discloses a moisture determination method for fresh cut flowers of gladiolus. The invention provides a method for measuring moisture in the senescence process of fresh cut flowers by combining low-field nuclear magnetic imaging and T2 relaxation method, and provides a standardized method for studying the physiological mechanism of fresh cut flowers senescence, developing fresh-keeping technology and delaying their senescence. The method requires less sample volume and simple steps, overcomes the long time-consuming detection of traditional drying methods, and cannot meet the requirements of real-time feedback and real-time adjustment in the production process; and the measurement speed is fast, the signal-to-noise ratio is good, and the prediction results are stable and accurate. Identification, optimization, research and application of fresh-cut flower preservation technology.

Description

technical field [0001] The invention belongs to the technical field of fresh-cut flower detection, in particular to a method for measuring the moisture content of fresh-cut flowers. Background technique [0002] Fresh cut flowers are one of the important product types of flower production in the flower industry. Cut flowers are inseparable from the ceremonial activities sent to and from home and abroad. They also play an important role in decorating the environment, beautifying life, and conveying emotions. Therefore, with the development of the economy, the global fresh cut flower industry has developed rapidly. Fresh cut flower cells need to maintain a certain turgor pressure in order to maintain normal physiological metabolism and maintain a bright appearance. After the cut flowers are harvested, the water and nutrient supply from the parent root system cannot be obtained, and the relative humidity of the atmosphere in the environment accelerates water transpiration. Wh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N24/08G01N1/28
CPCG01N24/08G01N1/286G01N2001/2873
Inventor 李秀梅黎洪波张卫娜周慧刘军
Owner AGRO BIOLOGICAL GENE RES CENT GUANGDONG ACADEMY OF AGRI SCI
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