A quantitative detection method for caprolactam in bio-based food packaging films

A quantitative detection method and technology for food packaging films, which are applied in measuring devices, instruments, scientific instruments, etc., can solve the problems of cumbersome processing, inability to quickly detect and monitor, and time-consuming, and achieve the effect of simple operation.

Active Publication Date: 2022-05-06
NANJING AGRICULTURAL UNIVERSITY
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Problems solved by technology

[0004] The purpose of the present invention is to provide a quantitative detection method for caprolactam in bio-based food packaging films, so as to solve the problem of cumbersome pretreatment process, long time-consuming, sample damage, environmental pollution, and inability to quickly detect caprolactam in food packaging in the prior art. and monitoring issues

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  • A quantitative detection method for caprolactam in bio-based food packaging films
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  • A quantitative detection method for caprolactam in bio-based food packaging films

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Embodiment Construction

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0039] A quantitative detection method for caprolactam in a bio-based food packaging film provided in an embodiment of the present invention includes:

[0040] Step 1: Prepare 15 groups of curdlan polysaccharide-based food packaging film samples with different caprolactam content by solution casting method, each group contains 12 samples with the same caprolactam content, a total of 180 samples, and place 180 samples at 25±0.5°C , stored under th...

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Abstract

The invention discloses a quantitative detection method for caprolactam in a bio-based food packaging film, comprising: preparing a bio-based food packaging film sample, which is divided into a modeling set and a prediction set; performing near-infrared spectrum collection and mid-infrared spectrum collection on each sample. Spectrum acquisition; determination of caprolactam content in each sample; low-level fusion of near-infrared spectral data and mid-infrared spectral data for each sample; preprocessing of the above spectral data for each sample; using modeling Set up a near-infrared spectrum correction model, a mid-infrared spectrum correction model, a near-mid-infrared low-level fusion spectrum correction model and a near-mid-infrared high-level fusion spectrum correction model; predict the content of caprolactam in each sample in the prediction set; The content of the caprolactam in the sample to be tested is determined by using the calibration model with the best prediction; the invention can quickly and accurately detect the content of the caprolactam in the bio-based food packaging film.

Description

technical field [0001] The invention relates to the technical field of caprolactam detection, in particular to a quantitative detection method for caprolactam in bio-based food packaging films. Background technique [0002] At present, the food safety problems caused by traditional plastic packaging are becoming more and more prominent. Therefore, vigorously promoting low-carbon and green bio-based degradable food packaging materials is the only way to solve the current food packaging problems in our country. Curdlan polysaccharide is a general term for a class of polysaccharides that can form elastic thermoreversible gels and thermoirreversible gels after heating their suspensions. It has excellent film-forming properties and can be applied to bio-based In food packaging materials. Nylon-6 fibers and nylon-6 engineering plastics can be obtained through polymerization of caprolactam, and nylon-6 can be used as food packaging films. During the polymer polymerization process...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/3563G01N21/359
CPCG01N21/3563G01N21/359G01N2021/3595
Inventor 潘磊庆朱静怡屠康韩璐张充彭菁
Owner NANJING AGRICULTURAL UNIVERSITY
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