Detection method for gamma-aminobutyric acid content in food by using high performance liquid chromatography method
A high-performance liquid chromatography and aminobutyric acid technology, which is applied in the field of high-performance liquid chromatography for detecting the content of γ-aminobutyric acid in food, can solve the problem of not formulating γ-aminobutyric acid and the like, and achieve reliable methods, The effect of reliable implementation and easy implementation
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[0033] Example 1, detection of precision and recovery rate of gamma-aminobutyric acid content in food:
[0034] Prepare 0.4mol / L borate buffer solution (pH=10.2): Weigh 3.43g borax and 0.25g boric acid, add 80mL water to dissolve, adjust pH=10.20 with 5mol / L sodium hydroxide solution, and set volume to 100mL.
[0035] Preparation of derivative solution: Weigh 0.1g of o-phthalaldehyde, add 30μL of 2-mercaptoethanol, add 4.0mL of methanol, fully dissolve, and dilute to 5.0mL with borate buffer solution.
[0036] Weigh 2.0021g (accurate to 0.0001g) of the well-mixed sample to be tested, add pure water, make up to 10mL, vortex and mix thoroughly, ultrasonically extract for 2min, centrifuge at 3000r / min for 5.0min, pass through a 0.45μm filter membrane After filtration, it was derivatized and analyzed online by high performance liquid chromatography.
[0037] Weigh 100.00mg of γ-aminobutyric acid standard substance, dissolve it with secondary water and dilute it to a 100mL volumet...
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