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Device and method for online electronic tongue identification of tea oil quality in supercritical extraction process

An electronic tongue, supercritical technology, used in measurement devices, preparation of test samples, material analysis by electromagnetic means, etc.

Pending Publication Date: 2021-01-12
GUANGDONG IND TECHN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing research is mainly aimed at off-line analysis of different edible oils, and there is no report on the use of online electronic tongue to identify the quality of camellia oil in the process of supercritical extraction in China

Method used

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  • Device and method for online electronic tongue identification of tea oil quality in supercritical extraction process
  • Device and method for online electronic tongue identification of tea oil quality in supercritical extraction process
  • Device and method for online electronic tongue identification of tea oil quality in supercritical extraction process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Supercritical CO 2 Extraction temperature of camellia oil extraction: extraction kettle temperature 40°C, 25MPa, separation kettle 1-40°C, 12MPa, separation kettle 2-40°C, 8MPa, and the following operations were performed for 2 hours of extraction.

[0050] Keep all valves closed, adjust the temperature of the autoclave body to 40°C, open the inlet valve and outlet valve of the autoclave body, and close the inlet valve and outlet valve after the temperature and pressure in the autoclave body are consistent with the extraction kettle or separation kettle;

[0051] Mix the lysine imidazolium ionic liquid and methyl oleate at a ratio of 1:0.5, pump it into the autoclave body according to the ratio of the mixed liquid to the volume of the autoclave body at a ratio of 0.005:1, and read the screen after fully stirring The potential signal of the printed electrode array electronic tongue sensor is processed by the PC, and finally the taste information file is obtained. The pre...

Embodiment 2

[0054] Supercritical CO 2 Extraction temperature of camellia oil: extraction kettle temperature 50°C, 30MPa, separation kettle 1-50°C, 10MPa, separation kettle 2-50°C, 6MPa, and perform the following operations for 1 hour of extraction.

[0055] Keep all valves closed, adjust the temperature of the autoclave body to 50°C, open the inlet valve and outlet valve of the autoclave body, and close the inlet valve and outlet valve after the temperature and pressure in the autoclave body are consistent with the extraction kettle or separation kettle;

[0056] Mix arginine imidazole ionic liquid and ethyl oleate at a ratio of 1:1, pump into the autoclave body according to the ratio of the mixed liquid to the volume of the autoclave body at a ratio of 0.007:1, and read the screen after fully stirring The potential signal of the printed electrode array electronic tongue sensor is processed by the PC, and finally the taste information file is obtained. The prefabricated model is calculate...

Embodiment 3

[0059] Supercritical CO 2 Extraction temperature of camellia oil extraction: extraction kettle temperature 40°C, 25MPa, separation kettle 1-50°C, 10MPa, separation kettle 2-60°C, 9MPa, and the following operations were performed for 4 hours of extraction.

[0060] Keep all valves closed, adjust the temperature of the autoclave body to 40°C, 50°C, and 60°C respectively, open the inlet valve and outlet valve of the autoclave body, and close the inlet valve after the temperature and pressure in the autoclave body are consistent with the extraction kettle or separation kettle. Air valve and outlet valve;

[0061] Mix asparagine pyridine ionic liquid and propyl oleate at a ratio of 1:3, pump into the autoclave body according to the ratio of the mixed liquid to the volume of the autoclave body at a ratio of 0.008:1, and after fully stirring, read the screen The potential signal of the printed electrode array electronic tongue sensor is processed by the PC, and finally the taste inf...

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Abstract

The invention belongs to the field of oil detection, and particularly discloses a device and a method for online electronic tongue identification of tea oil quality in a supercritical extraction process. The method comprises steps of adding a mixed solution of a particle liquid and a surfactant into a high-pressure kettle; reading an electric potential signal of an electronic tongue sensor arranged in the autoclave, and converting the electric potential signal through a PC end Weber Fechner law to finally obtain a taste information file; substituting the taste information into a model througha tea oil acid value, a peroxide value, total tocopherol, sterol and squalene model preset at a PC end to obtain corresponding physical parameters and substance content, and comprehensively evaluatingthe quality of the tea oil; according to the method, the determination of one sample can be completed in a short time, and the online evaluation of the quality of the tea oil is realized based on anonline electronic tongue recognition mode in a supercritical extraction process. And the method is simple, convenient, quick, low in cost and environment-friendly, and has great advantages compared with traditional chemical methods.

Description

technical field [0001] The invention belongs to the field of oil detection, in particular to a device and method for identifying the quality of camellia oil with an online electronic tongue in a supercritical extraction process. Background technique [0002] The traditional preparation process of camellia oil includes pressing method, aqueous enzymatic method, solvent extraction method, etc. Compared with it, supercritical CO 2 Extraction has received more attention in recent years. Supercritical CO 2 The extraction method is non-toxic, fast and efficient, and the critical conditions are mild (T c =304.2K,P c =7.38MPa), the extracted camellia oil not only has high content of biologically active components such as squalene and sterol, but also has light color, strong aroma, low acid value and peroxide value, which can avoid excessive refining and is very suitable for the preparation of high-end camellia oil. [0003] The composition of Camellia oleifera seeds is complex. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30G01N1/40
CPCG01N1/4055G01N27/301G01N2001/4061
Inventor 段迪熊景贤黄永黄健平邹颖周春晖李静邓毛程
Owner GUANGDONG IND TECHN COLLEGE