Method for identifying mature and concentrated rape honey, acacia honey and vitex negundo honey by using pyruvic acid

A technology of pyruvic acid and rapeseed honey, which is applied in the direction of analysis by using nuclear magnetic resonance, etc., can solve the problems such as the determination method of no mature honey and thermally processed concentrated honey, etc.

Pending Publication Date: 2020-07-07
JIANGSU SINOGRAPHY TESTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, my country's "National Food Safety Standard Honey" (GB 14963-2011) does not have clear regulations on the degree of mature honey and concentrated honey, and the entire bee product industry does not have a judgment method that can be used to identify mature honey and heat-processed concentrated honey

Method used

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  • Method for identifying mature and concentrated rape honey, acacia honey and vitex negundo honey by using pyruvic acid
  • Method for identifying mature and concentrated rape honey, acacia honey and vitex negundo honey by using pyruvic acid
  • Method for identifying mature and concentrated rape honey, acacia honey and vitex negundo honey by using pyruvic acid

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Experimental program
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Embodiment 1

[0018] 1. Instruments and reagents:

[0019] 1.1 Instruments:

[0020] Main instruments:

[0021] 400 MHz liquid NMR spectrometer and BBI probe from Bruker, Switzerland; IT0079 electronic balance from Mettler-Toledo Instruments (Shanghai) Co., Ltd.; 5mm NMR tube from Wilmad-labglass, USA.

[0022] 1.2 Reagents:

[0023] Sodium azide (NaN 3 ) purity specification is analytically pure, purchased from Tianjin Fuchen Chemical Reagent Factory; heavy water (D 2 O), the deuterium rate is 99.9%, purchased from Shanghai Anaiji Chemical Co., Ltd.; 2,2,3,3-deuterotrimethylsilane propionate sodium salt (TSP), the deuterium rate is 98%; phosphoric acid Potassium dihydrogen (KH 2 PO 4 ) is analytically pure, purchased from Shanghai Sinopharm Group Chemical Reagent Co., Ltd.; HCl solution with a mass fraction of 37%, with a purity of superior grade, was purchased from Shanghai Sinopharm Group Chemical Reagent Co., Ltd.; KOH, whose purity is analytically pure, was purchased from Shangh...

Embodiment 2

[0030] 1. Instruments and reagents:

[0031] 1.1 Instruments:

[0032] Main instruments:

[0033] 400 MHz liquid NMR spectrometer and BBI probe from Bruker, Switzerland; IT0079 electronic balance from Mettler-Toledo Instruments (Shanghai) Co., Ltd.; 5mm NMR tube from Wilmad-labglass, USA.

[0034] 1.2 Reagents:

[0035] Sodium azide (NaN 3 ) purity specification is analytically pure, purchased from Tianjin Fuchen Chemical Reagent Factory; heavy water (D 2 O), the deuterium rate is 99.9%, purchased from Shanghai Anaiji Chemical Co., Ltd.; 2,2,3,3-deuterotrimethylsilane propionate sodium salt (TSP), the deuterium rate is 98%; phosphoric acid Potassium dihydrogen (KH 2 PO 4 ) is analytically pure, purchased from Shanghai Sinopharm Group Chemical Reagent Co., Ltd.; HCl solution with a mass fraction of 37%, with a purity of superior grade, was purchased from Shanghai Sinopharm Group Chemical Reagent Co., Ltd.; KOH, whose purity is analytically pure, was purchased from Shangh...

Embodiment 3

[0042] 1. Instruments and reagents:

[0043] 1.1 Instruments:

[0044] Main instruments:

[0045] 400 MHz liquid NMR spectrometer and BBI probe from Bruker, Switzerland; IT0079 electronic balance from Mettler-Toledo Instruments (Shanghai) Co., Ltd.; 5mm NMR tube from Wilmad-labglass, USA.

[0046] 1.2 Reagents:

[0047] Sodium azide (NaN 3 ) purity specification is analytically pure, purchased from Tianjin Fuchen Chemical Reagent Factory; heavy water (D 2 O), the deuterium rate is 99.9%, purchased from Shanghai Anaiji Chemical Co., Ltd.; 2,2,3,3-deuterotrimethylsilane propionate sodium salt (TSP), the deuterium rate is 98%; phosphoric acid Potassium dihydrogen (KH 2 PO 4 ) is analytically pure, purchased from Shanghai Sinopharm Group Chemical Reagent Co., Ltd.; HCl solution with a mass fraction of 37%, with a purity of superior grade, was purchased from Shanghai Sinopharm Group Chemical Reagent Co., Ltd.; KOH, whose purity is analytically pure, was purchased from Shangh...

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Abstract

The invention provides a method for identifying mature and concentrated rape honey, acacia honey and vitex negundo honey by using pyruvic acid, and belongs to the technical field of food detection. The method comprises the steps of respectively dissolving a proper amount of pyruvic acid and various mature and thermally concentrated honey in a phosphate buffer solution, adjusting the pH value to 3.0+/-0.1, and obtaining hydrogen spectrum data of pyruvic acid and various honey by adopting a 400MHz nuclear magnetic resonance spectrometer with a BBI probe. The hydrogen spectrum data of pyruvic acid shows that the characteristic peak of pyruvic acid is a single peak near the displacement of 2.37+/-0.02ppm, for example, the hydrogen spectrums of honey samples of rape honey, acacia honey and vitex negundo honey have a single peak at the same position and are higher than the peripheral peaks, wherein if the hydrogen spectrum is higher than the peripheral peaks, the honey is concentrated honey,otherwise, the honey is mature honey. The method provided by the invention is simple and efficient, and can be used for accurately identifying mature and thermally concentrated rape honey, acacia honey and vitex negundo honey.

Description

technical field [0001] The invention belongs to the technical field of food detection, and in particular relates to a method for identifying mature and concentrated rapeseed honey, acacia honey and wattle honey by using pyruvic acid. Background technique [0002] Honey is a natural sweet substance that bees collect from the nectar, secretion or honeydew of plants, mix with their own secretions, and fully brew. Naturally mature honey will not deteriorate after being stored for one or two years, while thin immature honey is easily fermented and sour due to its high water content. In 2019, the International Bee Federation (APIMONDIA) emphasized that honey must be matured and matured in the hive of bees, and immature honey harvested by beekeepers should be considered as counterfeit honey. In this regard, the domestic bee industry has also begun to discuss and study the issue of producing mature honey. Honey with a concentration of 42 degrees Baume and above is called mature hon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N24/08
CPCG01N24/08
Inventor 徐锦忠鲁惠玲季秀艳
Owner JIANGSU SINOGRAPHY TESTING
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