Method for quickly detecting histamine content in fruit wine
A technology for medium histamine and fruit wine, applied in the field of analysis and detection, can solve the problems of complex processing process, expensive instrument consumables, low detection sensitivity, etc., and achieve the effect of simple operation, reasonable parameter design, and high practicability
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Embodiment 1
[0048] Take histamine solution, dansyl chloride solution, and histamine-dansyl chloride derivatives respectively, and use a fluorescence spectrometer to detect the fluorescence spectra of the three substances (attached figure 1 shown).
[0049] Conclusion: Observing the fluorescence spectrum, it can be seen that compared with histamine solution and dansyl chloride solution, histamine-dansyl chloride derivatives have stronger fluorescence, and the maximum emission wavelength is 521nm.
Embodiment 2
[0051] To prepare materials, take dansyl chloride and dissolve it in acetone to prepare a dansyl chloride solution, the concentration of the dansyl chloride solution is 1 mg / mL; then take 1 mL of fruit wine, add 2 mol / L NaOH solution, stir, and then add saturated NaHCO3 solution, adjust the pH to 7.5.
[0052] Then add dansyl chloride solution to the fruit wine, place it in a water bath at 10°C, and react to generate histamine-dansyl chloride derivatives, and the heating reaction time is 10 minutes; then add 0.1mL ammonia water to the fruit wine to stop the reaction and remove the residual dansyl chloride Sulfonyl chloride is filtered with a 0.45 μm organic membrane to remove impurities in the fruit wine; the treated fruit wine is placed under a fluorescence spectrometer for fluorescence detection, and the fluorescence intensity is measured.
[0053] In embodiment 2, fruit wine is peach wine.
Embodiment 3
[0055] When preparing the dansyl chloride solution, prepare the concentrations of 2mg / mL, 3mg / mL, 4mg / mL, 5mg / mL, 6mg / mL, 7mg / mL... 15mg / mL, and the concentrations are successively separated by 1mg / mL. Group control experiment, all the other step parameters of each group of control experiment are identical with embodiment 2.
[0056] The 15 groups of data that embodiment 2, embodiment 3 obtain are carried out statistics again, measure the fluorescence intensity of histamine-dansyl chloride derivative under different solubility, compare the impact of dansyl chloride concentration on fluorescence intensity (as attached figure 2 shown).
[0057] Conclusion: When the concentration of dansyl chloride solution is 10 mg / mL, the fluorescence intensity of histamine-dansyl chloride derivatives is the highest.
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