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Rapid and lossless analysis method for content of ternary adulterated sesame oil

A non-destructive analysis, sesame oil technology, applied in the field of food analysis, can solve problems such as weak signal, achieve the effect of simple operation, good prediction effect and fast calculation speed

Inactive Publication Date: 2015-12-09
TIANJIN POLYTECHNIC UNIV
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Problems solved by technology

However, due to the weak signal of near-infrared spectroscopy, there are interference information such as background and noise, so it is necessary to use the multivariate calibration technology of chemometrics for quantitative analysis

Method used

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  • Rapid and lossless analysis method for content of ternary adulterated sesame oil
  • Rapid and lossless analysis method for content of ternary adulterated sesame oil
  • Rapid and lossless analysis method for content of ternary adulterated sesame oil

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Embodiment

[0023] 1) Sample preparation: use 10 brands (Luhua, Fulinmen, Arowana, Totole, Sipan, Chaosheng, Shujiang, Gubi, Lier, Lee Kum Kee) of sesame oil, soybean oil and rice oil for ternary Blend and prepare 50 samples. In the prepared samples, the theoretical mass of soybean oil and rice oil ranges from 0.05 to 2.50g, with an interval of 0.05g; in order to reduce the linear correlation of data, the quality of soybean oil is increased in order, and the quality of rice oil is randomized using matlab. And make its linear correlation to be the smallest, finally add the sesame oil mass accumulation to be 5g of total mass. Use an electronic balance with an accuracy of one-thousandth (FA2004, Shanghai Sunny Hengping Instrument Co., Ltd.) to accurately weigh and place it in a pre-coded 10mL glass bottle. Set aside for a period of time to make the air bubbles in the sample disappear completely.

[0024] 2) Near-infrared spectrum collection: perform spectrum measurement on the prepared sam...

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Abstract

The invention provides a rapid and lossless analysis method for content of ternary adulterated sesame oil. The ternary rapid and lossless analysis method comprises the following steps: selecting sesame oil and two types of low-price vegetable oil and carrying out ternary mixing at a certain ratio; putting a sample into a cuvette and scanning a near infrared spectrum of the sample by using a transmission mode of a near infrared spectrophotometer; dividing data into a training set and a predication set by adopting a KS grouping method; establishing a partial least-squares regression model for each type of component oil; substituting an unknown sample to the corresponding model to obtain the content of the component oil. The ternary rapid and lossless analysis method has the advantages that a near infrared spectrum technology is used as an analysis means and the sample does not need to be pretreated, so that the sample is not damaged and the spectrum of one sample can be collected within a few seconds; the partial least-squares regression modeling is adopted and only one parameter needs to be determined, so that the calculation speed is high and the predication effect is good. The ternary rapid and lossless analysis method is suitable for quantitative analysis of the content of each type of the component oil in the ternary mixed sesame oil.

Description

technical field [0001] The invention belongs to the field of food analysis and relates to a rapid and non-destructive analysis method for the content of ternary adulterated sesame oil. Background technique [0002] Sesame oil is a homogeneous liquid extracted from sesame seeds through processes such as pressing, pressing and water substitution. Because of its strong fragrance, unique taste and cooking function, it has been playing an important role in people's daily life as an important necessity. Modern research shows that: sesame oil is not only a simple edible vegetable oil, but also has high medical value. Sesame oil is rich in vitamin E, linolenic acid and trace elements such as iron, zinc, copper, etc. It has a certain positive effect on maintaining the integrity of cell membranes, promoting cell division, softening blood vessels and maintaining blood vessel elasticity, and has health-preserving effects to a certain extent . Especially in today's social background w...

Claims

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Application Information

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IPC IPC(8): G01N21/359G01N21/3577
Inventor 卞希慧王江江陈娇娇娄磊张志响
Owner TIANJIN POLYTECHNIC UNIV
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