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Analysis method of abietic acid content in skin of livestock and poultry

An analysis method, the technology of rosin acid, applied in the field of analysis and testing, can solve the problems of no research report on the detection method of rosin residue in livestock and poultry, no establishment of rosin identification method for livestock and poultry processing, etc.

Active Publication Date: 2013-08-07
JIANGSU ACAD OF AGRI SCI
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  • Summary
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  • Description
  • Claims
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Problems solved by technology

[0004] Although the "Food Safety Law" explicitly prohibits the use of rosin in livestock and poultry depilation processing, there is no identification method for whether rosin is used in livestock and poultry processing, and there is no research report on the detection method of rosin residue in livestock and poultry.

Method used

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  • Analysis method of abietic acid content in skin of livestock and poultry
  • Analysis method of abietic acid content in skin of livestock and poultry

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Experimental program
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Embodiment Construction

[0014] 1. Analysis steps of rosin acid in duck skin:

[0015] 1. Extraction and purification of rosin acid:

[0016] Analysis sample: light duck purchased from the farmer’s market, take its skin and chop it.

[0017] Extraction: Weigh 2.0 g of chopped duck skin sample into a 50 mL centrifuge tube with a stopper, add 15 mL of 0.05 mol / L KOH aqueous solution, and extract for 20 min in an ultrasonic water bath at room temperature. Then centrifuge at 5000 rpm for 15 min, and take 4 mL of supernatant.

[0018] Solid phase extraction purification: LC-SAX solid phase extraction cartridge (3mL / 500mg, Supelco, USA) was activated with 3 mL methanol and 3 mL 0.05mol / L KOH respectively, and the 4 mL supernatant was passed through the cartridge , The air is drained for 30 seconds, and the elution is eluted with 4 mL of a mixture of methanol and formic acid (the volume ratio of methanol and formic acid is 19:1). The eluate is collected and passed through a 0.22 μm microporous membrane to obtain th...

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Abstract

The invention discloses an analysis method of abietic acid content in skin of livestock and poultry, relates to an analysis method of abietic acid in skin of livestock and poultry and belongs to the field of analysis test. The analysis method comprises the following steps of: adding a dilute alkali solution into a skin sample of killed, processed and uncooked livestock and poultry, carrying out extraction, solid-phase extraction and purification to acquire a filtered solution, and then analyzing the filtered solution by using a high performance liquid chromatography- ultraviolet method (HPLC-UV). The livestock and poultry used in the analysis method refer to the killed, processed and uncooked pigs, docks, gooses or chicken. The analysis method is simple to operate and easy to popularize, and can be used for identifying whether the rosin is used for removing hairs during processing the livestock and poultry and analyzing the residual amount of the abietic acid in the livestock and poultry to protect the health of consumers.

Description

Technical field [0001] The invention relates to a method for analyzing abietic acid in the epidermis of livestock and poultry, and belongs to the field of analysis and testing. Background technique [0002] Hair removal is an important link in livestock and poultry processing and is generally done by machinery. However, ducks and geese still have a large amount of fine hair remaining after mechanical processing, and certain parts of pigs (such as pig heads and trotters) can hardly achieve the effect of complete hair removal, so it is necessary to increase the "secondary hair removal" process. Manual secondary hair removal is time-consuming and cumbersome, labor costs are high, and production efficiency is low. Most processing companies only rely on hair removal agents. Rosin is cheap and has a good depilatory effect. It was once a commonly used depilatory. With the improvement of social food safety awareness and the advent of a new safe food-grade adhesive-rosin glyceride, in 2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/88G01N30/06
Inventor 耿志明张苏珍张牧焓卞欢王道营刘芳诸永志徐为民
Owner JIANGSU ACAD OF AGRI SCI