Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for determining apple juice content in its beverage

A technology for apple juice and beverages, applied in the direction of testing beverages, testing food, analyzing materials, etc., can solve the problems of complex analysis procedures, application limitations, large measurement errors, etc., and achieves strong environmental adaptability, simple testing methods, and low equipment requirements. Effect

Inactive Publication Date: 2006-05-24
CHINA AGRI UNIV
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since apple juice is a multi-component mixed system, and its properties are affected by many factors, adulteration of apple juice is easy to occur, and the existence of a large number of adulterated juices seriously damages the interests and health of consumers. Looking for A scientific and practical, simple and accurate method for detecting the authenticity of apple juice and its beverages is imminent
[0004] The currently reported detection methods for the authenticity of apple juice and its beverages include: sugars, organic acids, phenols, inorganic elements, amino acids and other specific component discrimination methods and stable isotopes, spectroscopy, position-specific natural isotope classification-NMR method And other specific instrument analysis methods and standard sample comparison methods. These methods are not only complicated in analysis procedures, time-consuming and expensive, but also need to be carried out in the laboratory with the help of expensive analytical instruments and equipment. At the same time, these methods are only applicable to the authenticity of apple juice. Detection, unable to judge the authenticity of apple juice beverages, the scope of application is narrow, and the application is greatly restricted; in addition, there are some simple methods, such as sensory recognition method, etc., but the large measurement error has been eliminated

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1, method verification

[0015] Homemade apple juice, it is configured to the apple juice beverage that the original juice content is 20% (volume ratio) as sample to be tested; Get this sample 100ml seven parts, add 0.5, 0.6, 0.7, 0.8, 0.9, 1.0 respectively wherein , 1.1g of citric acid, stirred, and left to stand for 3 to 5 minutes after the citric acid was dissolved, measured the pH value of the solution with an acidity meter, and calculated H + concentration. Take the amount of citric acid added (g / L) as the Y axis, and take H + Concentration (mol / L) is X-axis, carries out linear regression, and the slope of the straight line equation is 896.42, and promptly the buffer coefficient of sample to be tested is 896.42; The obtained apple juice content in the solution is 21.5%, and the obtained result is consistent with the known sample juice content, which proves the practicability and accuracy of the method.

Embodiment 2

[0016] Example 2 Determination of the authenticity of the "fifth season" apple juice drink

[0017] Take the commercially available "Fifth Season" apple juice drink of 100ml and seven portions each, add 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1g of citric acid to it, stir, and let it stand for 3 minutes after the citric acid is dissolved , use a pH meter to measure the pH value of each solution, and calculate H + concentration. Take the amount of citric acid added (g / L) as the Y axis, and take H + Concentration is X-axis, linear regression is carried out, the slope of the straight line equation is 1691.70, that is, the buffer coefficient of the "fifth season" apple juice drink is 1691.70; according to the relational formula: apple juice content = (buffer coefficient-884.7642) / 54.2005 calculation The obtained apple juice content in the beverage is 14.89%, and the obtained result is compared with the juice content marked on the sample label. The concentration of the juice marked on th...

Embodiment 3

[0018] Example 3 Determination of the authenticity of "Dahu" apple juice

[0019] Take seven portions of 100ml of commercially available "Dahu" apple juice, add 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1g of citric acid to it, stir, and let it stand for 3 to 5 minutes after the citric acid is dissolved. Measure the pH value of the solution with a pH meter and calculate the H + concentration. Take the amount of citric acid added (g / L) as the Y axis, and take H + Concentration is X-axis, linear regression is carried out, and the slope of the linear equation is 6604.0, that is, the buffer coefficient of "Dahu" apple juice is 6604.0; according to the relational formula: apple juice content = (buffer coefficient-884.7642) / 54.2005 to calculate the solution The content of the original juice of the middle apple is 105.52%. The result obtained is compared with the content of the juice marked on the sample label. The concentration of the original juice marked on the label is 100%. "Great Lake...

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 includes procedures: (1) measuring buffer coefficient of sample of drink includes steps: adding citric acid to the drink, and measuring pH value of solution; with level of addition of citric acid being as Y axis, and consistency being as X axis, linear regression is carried out; slope of obtained linear equation is as buffer coefficient a of the drink; unit for level of addition of citric acid is g / L, and consistency H is in mol / L; (2) calculating consistency of natural juice of apple includes steps: according to formula Cú¢(a-884.7642) / 54.2005, calculating content C of natural juice of apple, C is content in unit of volume percentage. Features are: low requirement for equipment, simple method, quick testing and use in site.

Description

technical field [0001] The invention relates to a method for determining the content of apple juice in an apple juice drink. Background technique [0002] Juice is the essence of fruit, rich in various nutrients, bright in color and pleasant in flavor, which is favored by consumers. With the improvement of people's living standards and the constant changes in demand, people gradually replace various artificially synthesized drinks with fruit juice and its drinks, and the consumption of fruit juice drinks is increasing. However, due to the limitation of fruit raw materials and production capacity, The production cost of fruit juice is relatively high, which prompts some dishonest manufacturers to add cheap fruit juice to pure fruit juice or use synthetic substances to make fruit juice drinks in order to gain profits. According to statistics, there are 50-80% of the international % of fruit juices are adulterated to varying degrees. In December 2003, the State Administration...

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): G01N35/00G01N33/14G06F19/00
Inventor 胡小松高海燕陈芳廖小军吴继红
Owner CHINA AGRI UNIV