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Detection method for adulterated tea oil

A technology of camellia oil and species, applied in the field of camellia oil detection, achieves good linear relationship, is conducive to rapid detection, and has good repeatability.

Active Publication Date: 2015-04-08
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This patent combines the measurement of physical and chemical properties and ultraviolet spectrum analysis to obtain the relevant information of camellia oil doped with different varieties of edible oils, establish the change model of adulterated amount and absorbance of adulterated tea oil, and predict the type and content of adulterated in the sample to be tested. Thereby realizing qualitative and quantitative analysis, there is no report yet in the detection of camellia oil adulteration

Method used

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  • Detection method for adulterated tea oil
  • Detection method for adulterated tea oil
  • Detection method for adulterated tea oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Embodiment 1 Determination and establishment of standard model

[0052] 1. Preparation of binary system mixed oil: mix tea oil with other vegetable oils in different proportions (volume ratio), mix

[0053] Concentrations are 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, respectively.

[0054] 2. Identification of adulteration types of camellia oil adulteration:

[0055] 1) Select tea oil samples doped with different concentrations of soybean oil, rapeseed oil, corn oil, rice bran oil, and palm oil, and measure their refractive index, iodine value, and saponification value;

[0056] 2) Bayesian discriminant analysis was carried out by SAS software, that is, according to the refractive index, iodine value, saponification value and oleic acid content of the adulterated camellia oil samples with known doping types, they were divided into different populations according to the doping types; The refractive index, iodine value, saponification value and oleic ...

Embodiment 2

[0071] Embodiment 2: the mensuration of adulterated soybean oil in tea oil

[0072] 1. Identification of adulteration types of camellia oil adulteration:

[0073] 1) Collect tea oil samples mixed with different concentrations of soybean oil, rapeseed oil, corn oil, rice bran oil and palm oil, and measure their refractive index, iodine value, saponification value and oleic acid content;

[0074] 2) Bayesian discriminant analysis was carried out by SAS software, that is, according to the refractive index, iodine value, saponification value and oleic acid content of the adulterated camellia oil samples with known doping types, they were divided into different populations according to the doping types; The refractive index, iodine value, saponification value and oleic acid content of unknown samples are analyzed to analyze the probability of belonging to different populations. This probability is used as a criterion for discrimination and classification, so as to reali...

Embodiment 3

[0086] Embodiment 3: the mensuration of doped rapeseed oil in tea oil

[0087] 1. Identification of adulteration types of camellia oil adulteration:

[0088] 1) Collect tea oil samples mixed with different concentrations of soybean oil, rapeseed oil, corn oil, rice bran oil and palm oil, and measure their refractive index, iodine value, saponification value and oleic acid content;

[0089] 2) Bayesian discriminant analysis was carried out by SAS software, that is, according to the refractive index, iodine value, saponification value and oleic acid content of the adulterated camellia oil samples with known doping types, they were divided into different populations according to the doping types; The refractive index, iodine value, saponification value and oleic acid content of unknown samples are analyzed to analyze the probability of belonging to different populations. This probability is used as a criterion for discrimination and classification, so as to realize the id...

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Abstract

The invention relates to the technical field of edible oil, and provides a method for detecting the adulterated tea oil. The method comprises the following steps of: firstly, establishing a refractive index, an iodine value, a saponification value and an oleic acid content adulteration detection model, determining the adulteration type by detecting the sample, then, determining an adulteration quantity model through ultraviolet spectrum full-wave scanning, and comparing the data to obtain the determined adulteration quantity. According to the method provided by the invention, not only can the adulteration type for the tea oil be identified, but also the adulteration quantity can be detected, so that cheap edible oil can be prevented from being used for personating expensive tea oil. The method provided by the invention has the characteristics of being economical and simple, excellent in repeatability and high in accuracy, and the like, can be practically used for the teal oil adulteration detection work, and can guarantee and safeguard the benefits of consumers.

Description

technical field [0001] The invention relates to the field of camellia oil detection, in particular to a method for detecting adulterated camellia oil. Background technique [0002] Camellia oil is known as "Oriental olive oil". Its fatty acids are mainly composed of unsaturated fatty acids such as oleic acid, linoleic acid and linolenic acid, with a content of more than 90%. Camellia oil is rich in VE, VD, VK and carotene, and contains active ingredients such as tea polyphenols and squalene. It has good nutritional and health functions and is deeply loved by consumers. Because the price of camellia oil is higher than that of other edible oils, some unscrupulous traders mix other low-priced vegetable oils into camellia oil in order to make huge profits, which seriously damages the interests of consumers. Therefore, there is an urgent need to research and develop a set of simple, general, accurate and reliable identification and detection methods for adulterated camellia oil ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/33
Inventor 吴雪辉郑艳艳
Owner SOUTH CHINA AGRI UNIV
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