Manufacturing method of food odor visible sensor based on natural pigment

A technology of natural pigments and production methods, applied in the field of production of food odor visualization sensors based on natural pigments, which can solve problems such as inability to contact with food, unsuitable for food analysis, and chemical toxicity

Active Publication Date: 2012-06-20
JIANGSU UNIV
View PDF3 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The gas-sensitive materials in the patent No. ZL200710024695.7, titled "Manufacturing Method of Color Sensitive Gas Sensor Array" are generally porphyrin compounds and hydrophobic pH indicat

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Manufacturing method of food odor visible sensor based on natural pigment
  • Manufacturing method of food odor visible sensor based on natural pigment
  • Manufacturing method of food odor visible sensor based on natural pigment

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example

[0021] The four natural pigments of black rice pigment, azalea pigment, peach pigment and purple potato pigment are extracted by the following methods: 1. Black rice pigment extraction process: use a household juicer to pulverize the black rice, pass through a 40-mesh sieve, and accurately weigh 20 After sieving, put the black rice sample and 200 ml of 80% ethanol aqueous solution into a conical flask, and put it in a water bath at 80 °C for 2 hours before taking it out. 2. Extraction process of azalea pigment: After washing and draining the extracted petals of azalea 2 hours. 3. Peach flower pigment extraction process: Wash and drain the picked peach petals, weigh 20 grams and smash them with a mortar, and put 200 ml of 80% ethanol solution into a conical flask, and extract in a 30°C water bath for 2 hours . 4. Extraction process of purple potato pigment: Take 20g of purple potato, wash it, cut it into diced pieces and mash it in a tissue homogenizer to ob...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a manufacturing method of a food odor visible sensor based on natural pigment. The manufacturing method comprises the steps of: respectively adding 50-95% alcohol solution or 3-7% of citric acid solvent to black rice, azalea, peach flower and purple sweet potato raw materials, soaking in a 60-80 DEG C water bath pan, after obvious fading, filtering and concentrating to obtain four pigment concentrated solutions with water contents of 60-80%, adjusting the pH values of the four pigment solutions to 4, 5, 6, 7, 8 and 10 with water, 0.5-5% citric acid solution and 3-10% sodium bicarbonate solution respectively, detecting with a color difference meter and analyzing the color difference of each pigment under the conditions of different pH values by an LAB color space method, selecting the pigment with obvious AB value changes under the weak acid, neutral and weak basic conditions as a gas sensitive material, finally fixing the gas sensitive material to a substrate flat material, and drying to obtain a visible sensor array. According to the invention, the natural pigment is used as the gas sensitive material, thereby being nontoxic and harmless as well as eliminating the harm to human health.

Description

technical field [0001] The invention relates to a manufacturing method of an odor visualization sensor, in particular to a manufacturing method of a food odor visualization sensor using natural pigments as gas-sensitive materials. Background technique [0002] Food odor is an important indicator for judging food quality and freshness. Since most food odors are colorless and invisible to the naked eye and are not easy to collect, it is difficult to conduct qualitative and quantitative analysis. Food odors are usually acidic and volatile, so these two properties can be used to make odor visualization sensors. The currently available odor visualization sensors perform qualitative and quantitative analysis of the gas to be detected based on the color change before and after the reaction between a specific gas-sensitive material and the gas to be detected. The gas-sensitive materials in the patent No. ZL200710024695.7, titled "Manufacturing Method of Color Sensitive Gas Sensor A...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01N21/78
Inventor 邹小波黄晓玮石吉勇陈正伟张德涛
Owner JIANGSU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap