High performance liquid chromatography detection method for content of cochineal in food
A high-performance liquid chromatography and cochineal technology, which is applied in the field of high-performance liquid chromatography detection of carmine content in food, can solve the problems of undiscovered and undiscovered open patent documents of high-performance liquid chromatography detection methods, etc. Achieve the effect of saving time, rapid component detection and analysis, and short detection time
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[0032] The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.
[0033] A high-performance liquid chromatography detection method for carmine content in food, the innovation of which is that the method includes the following steps:
[0034] 1) Preparation of standard working solution:
[0035] Weigh an appropriate amount of carminic acid standard substance, dissolve it with methanol, transfer to a volumetric flask and constant volume, and prepare carminic acid standard working solution of appropriate concentration for use;
[0036] 2) Preparation of sample working solution:
[0037] Accurately weigh 0.3g to 0.5g of sample into a 50mL centrifuge tube, add 10mL of HCl extract with a concentration of 2mol / L, vortex, ultrasonicate at 75°C for 30min, cool to room temperature, add 15mL of methanol, oscillate, ...
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