Rapid detection method for adulteration of camellia seed oil based on near infrared spectroscopy

Abstract

The invention discloses a rapid detection method for adulteration of camellia seed oil based on a near infrared spectroscopy. The rapid detection method comprises the following steps: combining the near infrared spectroscopy with a mahalanobis distance clustering analysis method; combining different waveband selections and different spectrum pre-treatment methods to establish a model for distinguishing the variety of five types of edible vegetable oil; combining the near infrared spectroscopy and a self-organizing artificial neural network to carry out mode identification on the five types ofedible vegetable oil; under a camellia seed oil binary adulteration system, establishing a qualitative distinguishing and analysis model of three types of adulterated edible oil; carrying out singularpoint analysis on an adulterated sample by adopting a statistical method; under the camellia seed oil binary adulteration system, combining partial least squares (PLS) to establish a quantitative analysis model of the three types of adulterated edible oil. The method disclosed by the invention provides technical supports for controlling the product quality on site by a camellia seed oil production enterprise; a rapid, lossless, accurate and environment-friendly novel method is provided for detecting the quality of the camellia seed oil in a large batch by a supervision organization.

Description

technical field [0001] The invention relates to the technical field of camellia oil detection, in particular to a rapid detection method for camellia oil adulteration based on near-infrared spectroscopy. Background technique [0002] Edible oil is an indispensable energy-supplying nutrient for maintaining human metabolism and life activities, and provides essential fatty acids and fat-soluble vitamins for the human body. Among them, it has important functions such as regulating blood lipids, clearing thrombus, promoting nerve cell development, and anti-inflammatory properties. The quality of edible oil is directly related to people's health. As a unique vegetable oil in my country, camellia oil is rich in unsaturated fatty acids and has high nutritional value. At present, there are two main types of problems that affect the quality of camellia oil: one is that camellia oil has been oxidized and rancid due to long-term storage or condition changes; the other is that due to ...

AI Technical Summary

Problems solved by technology

Classical physical and chemical detection methods and sensory evaluation methods can only be used for the preliminary judgment of edible oil types, and the detection of adulterated edible oils cannot be determined; current instrumental methods, such as gas chromatography, gas chromatography-mass spectrometry, nuclear magnetic resonance, and electronic nose In practical applications, gas chromatography and gas chromatography-mass spectrometry require methylation pretreatment of samples and take a long time to analyze; nuclear magnetic resonance equipment is expensive and expensive to detect, and it is difficult to promote it in China; electronic nose technology data processing is relatively slow. Complicated, the detection accuracy needs to be improved