Detection method for rapidly determining sugar mixing ratio of Dangshan pear syrup

A detection method and rapid determination technology, applied in measuring devices, instruments, scientific instruments, etc.

Active Publication Date: 2020-11-20
ANHUI AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the technical problem of whether the sucrose, fructose and glucose contained in Dangshanli paste are indistinguishable from the addition of sucrose, fructose, and glucose, the present inventi

Method used

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  • Detection method for rapidly determining sugar mixing ratio of Dangshan pear syrup
  • Detection method for rapidly determining sugar mixing ratio of Dangshan pear syrup
  • Detection method for rapidly determining sugar mixing ratio of Dangshan pear syrup

Examples

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Effect test

Embodiment 2

[0085] A method for rapidly determining the sugar-mixing ratio of Dangshan pear extract. The Dangshan pear extract is selected from pear extract prepared from Dangshan pears harvested in the autumn of 2018. The method for determining the sugar-mixing ratio specifically includes the following steps:

[0086] (4) Sampling of pear paste: dig out homemade pear paste with a sugar content rate of 20% with a spoon, and the sample in the middle of the tank is the best;

[0087] (5) Utilize a refractometer to measure the soluble solids concentration of the pear paste sample. The present embodiment adopts the WYT-A type hand-held soluble solids concentration meter, and the measured soluble solids concentration is 60°Brix;

[0088] (6) Pretreatment of pear extract samples: Pour the pear extract into a mortar, add liquid nitrogen, grind into powder, take 250 mg into a 2 mL microcentrifuge tube, add 1.5 mL of -20 °C, 100% methanol, vortex for 10 s, spin Put it into a 10mL centrifuge tube, ...

Embodiment 3

[0096] A method for quickly determining the sugar-mixing ratio of Dangshanli paste, wherein the Dangshanli paste is selected from pear paste prepared from Dangshan pears harvested in the autumn of 2019, and the method for determining the sugar-mixing ratio specifically includes the following steps:

[0097] (1) Sampling of pear paste: dig out homemade pear paste with a sugar content rate of 30% with a spoon, and the sample in the middle of the tank is the best;

[0098] (2) Utilize refractometer to measure pear extract sample soluble solids concentration to be 65 ° of Brix;

[0099] (3) The subsequent method is the same as in Example 1. After obtaining the detection spectrum, the peak area of ​​D-allose is 198.82303. Using the standard curve of D-allose peak area and its concentration y=2435084x+219039, R2=0.9961, it is obtained that D-allose in the pear paste sample The concentration of sugar is 172.02304mg / mL;

[0100] (4) Bring the measured soluble solids content and the ...

Embodiment 4

[0102] A method for quickly measuring the sugar-mixing ratio of Dangshan pear paste, the pear paste prepared from the autumn harvested Dangshan pear purchased in July, August, and November 2019 is selected for the Dangshan pear paste, and the determination method of the sugar-mixing ratio is the same as in Example 2, and the calculation method is as follows: Formula is also with embodiment 2.

[0103]

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Abstract

The invention discloses a detection method for rapidly determining the sugar mixing ratio of Dangshan pear syrup, and belongs to the technical field of food detection. The specific method is as follows: establishing a function model according to data of different soluble solid concentration degrees Brix, different sucrose doping ratios and D-allose contents of the known multiple groups of Dangshanpear syrup, obtaining a soluble solid concentration-sugar doping ratio-allose content fitting surface function equation, and obtaining a sugar doping ratio calculation equation through a transformation equation; respectively measuring the content of D-allose and the concentration degree Brix of soluble solids in the pear syrup to be measured; and substituting the D-allose content and the solublesolid concentration degree Brix into the obtained sugar mixing ratio calculation equation, and calculating to obtain the sugar mixing ratio of the pear syrup. The method is suitable for all pear syrupand pear syrup cans prepared by taking Dangshan pears as raw materials, and is not limited by a processing mode, batches of the raw materials and production places of the raw materials. The method ishigh in practicability and high in accuracy in actual product detection.

Description

technical field [0001] The invention relates to a method for detecting the sugar-mixed ratio of pear paste, in particular to a method for rapidly measuring the sugar-mixed ratio of Dangshan pear paste. Background technique [0002] Dangshansu pear has a wide planting area and a huge output. At present, Dangshansu pear has the largest output and the cheapest price among all pear varieties, with low economic value and low degree of deep processing. [0003] Pear paste has medicinal value such as removing heat and clearing phlegm, relieving cough and nourishing lungs, etc. It is a very popular daily supplement for medicine and food. Therefore, the combination of traditional technology and modern processing technology to process Dangshansu pear into pear paste is an effective way to solve the unsalable production of Dangshansu pear and increase income. Therefore, pear paste processing has gradually emerged in the market, and most pear pastes are processed from Dangshan pears. ...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/06G01N30/74
CPCG01N30/02G01N30/06G01N30/74
Inventor 李梅青余宇晖何磊章忠林张海伟赵婷婷鲁加惠
Owner ANHUI AGRICULTURAL UNIVERSITY
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