Yak meat production place tracing method based on multiple elements and stable isotopes

A technology for stabilizing carbon isotopes and yak meat is applied in the field of identifying the origin of yak meat, which can solve the problems of unsatisfactory single chemical method traceability technology, complex growth environment of captive animals, etc. Effect

Inactive Publication Date: 2019-01-18
QINGHAI ACAD OF ANIMAL SCI & VETERINARY MEDICINE
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Problems solved by technology

[0004] However, since yaks graze in the wild all year round, the growth environment is more compl...

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  • Yak meat production place tracing method based on multiple elements and stable isotopes
  • Yak meat production place tracing method based on multiple elements and stable isotopes
  • Yak meat production place tracing method based on multiple elements and stable isotopes

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Embodiment 1

[0049] The present embodiment provides a method for identifying the authenticity of the place of origin of yak meat, and the specific steps are as follows:

[0050] (1) Collection of yak meat samples

[0051] Yak meat samples from a certain slaughterhouse: a total of 40 parts, each 500g, is the longissimus dorsi muscle (between 10-14 ribs) of 3-4-year-old female yaks; the marked origins are: Henan County, Qinghai Province (sample 1 -10), Datong County, Qinghai Province (sample 1-10), Hongyuan County, Sichuan Province (sample 1-10), Jiulong County, Sichuan Province (sample 1-10);

[0052] (2) Yak meat samples were dried, pulverized, and degreased

[0053] Freeze drying: cut the sample into 1cm 3 The small dices are spread in a tray and freeze-dried for 48 hours before being taken out;

[0054] Pulverization: put the freeze-dried sample into a planetary ball mill for pulverization, about 1 hour;

[0055] Degreasing: The crushed yak meat sample is subjected to Soxhlet extract...

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Abstract

The invention relates to a yak meat production place tracing method based on multiple elements and stable isotopes. The method comprises the steps of (1), collecting a yak meat sample and carrying outpreprocessing to obtain a defatted yak meat sample; (2), detecting a stable carbon isotope abundance ratio, a stable hydrogen isotope abundance ratio, and a mineral element Ti content in the defattedyak meat sample; (3), carrying out computing to obtain a stable carbon isotope ratio delta<13>C%o and a stable hydrogen isotope ratio delta<2>H%o according to the stable carbon isotope abundance ratio and the stable hydrogen isotope abundance ratio; and (4), substituting the stable carbon isotope ratio delta<13>C%o, the stable hydrogen isotope ratio delta<2>H%o and the mineral element Ti contentinto a judgment model, and judging a production place of the yak meat sample according to a computing result. The method is simple and convenient and is high in operability. Influence of external environment factors on yak meat production place tracing accuracy is effectively reduced. The yak meat production place tracing accuracy can be improved. The method is characterized by speediness, economyand practicality.

Description

technical field [0001] The invention relates to a method for identifying the origin of yak meat, in particular to a method for tracing the origin of yak meat based on multi-elements and stable isotopes. Background technique [0002] Yak is a unique geographical landmark product of the Qinghai-Tibet Plateau. Its breed characteristics and living environment determine its excellent and rare quality. However, there is a phenomenon of shoddy goods and false ones in the market. In view of this, in order to protect the uniqueness and authenticity of yak meat in the market, the production and sales of yak need a set of applicable monitoring methods to trace the source of yak meat. [0003] In the traceability of agricultural products, the most common traceability methods are physical methods and chemical methods, but due to physical methods, such as animal ID card, radio frequency identification (Radio frequency identification, RFID) and other technologies are prone to disadvantage...

Claims

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Application Information

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IPC IPC(8): G01N27/62
CPCG01N27/62
Inventor 项洋郝力壮柴沙驼牛建章张晓卫王迅孙璐
Owner QINGHAI ACAD OF ANIMAL SCI & VETERINARY MEDICINE
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