Method for rapidly determining oil contents of agricultural products by using mid-infrared spectrometer based on horizontal attenuated total reflection (ATR)

An infrared spectroscopy, rapid determination technology, applied in color/spectral property measurement, measurement device, material analysis by optical means, etc. Sex-enhancing effect

Inactive Publication Date: 2012-10-31
JIANGSU UNIV
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Problems solved by technology

But there is no method to quickly measure the oil content of agricultural (food) products using mid-infrared based on horizontal ATR

Method used

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  • Method for rapidly determining oil contents of agricultural products by using mid-infrared spectrometer based on horizontal attenuated total reflection (ATR)

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Embodiment Construction

[0027] Take instant noodles as an example below to further describe the present invention in detail.

[0028] The mid-infrared spectrometer adopted in the mid-infrared spectrum acquisition system based on horizontal ATR used in the specific embodiment of the present invention is the WQF-510A Fourier transform infrared spectrometer produced by Beijing Beifen Ruili Analytical Instrument (Group) Company; The NIRSA data processing system compiled by the infrared working group was used to establish the model; the braised pork rib noodles produced by Zhenjiang Weijiayuan Food Co., Ltd. was purchased as a test sample. According to (GB / T14488. 1), the oil content of the sample is measured by the Soxhlet extraction method, which is used for the following model establishment and calibration. The specific measurement process is as follows:

[0029] (1) Weigh 100g of instant noodles and use the Soxhlet extraction method (GB / T14488. 1) to extract about 20g of fat, which is used for mode...

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Abstract

The invention discloses a method for rapidly determining oil contents of agricultural products by using a mid-infrared spectrometer based on horizontal attenuated total reflection (ATR), and relates to the field of rapid detection of the oil contents of the agricultural (food) products. A dry agricultural (food) product is ground, dissolved by using a certain amount of Alpha-bromonaphthalene and filtered; a filtrate is placed on a horizontal ATR crystal; an ATR infrared spectrum of the filtrate is collected; and the oil content of the filtrate is pre-determined by using a well-established model. The method disclosed by the invention has the advantages that the oil contents of the agricultural (food) products can be analyzed rapidly, simply, conveniently and quantitatively only by simply preprocessing samples, the detection linear range is wide and an accurate and reliable result is obtained.

Description

technical field [0001] The invention relates to the field of rapid detection of oil content of agricultural (food) products; in particular, a mid-infrared rapid determination of oil content of agricultural (food) products based on a horizontal ATR (Attenuated Total Reflection abbreviated as ATR, meaning attenuated total reflection) attachment Methods. Background technique [0002] The level of oil content in agricultural products will affect the level of the product, especially oil processing enterprises hope to quickly measure the oil content of these agricultural products, so as to give a reasonable price. Food companies such as instant noodles and French fries need to keep abreast of changes in product oil content in order to give early feedback to the production department to guide the adjustment of the production process. [0003] At present, the oil content of popular agricultural products, especially high-fat soybeans, sesame, rapeseed, etc., and fried foods such as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/35G01N21/3563
Inventor 陆道礼陈斌邵美丽朱文静
Owner JIANGSU UNIV
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