Note: Select 2-3 Expected Differences of S this predicted before formally measurement. Product instruction: celery is a natural flavonoid material, widely existing in vegetables, fruits. Studies have shown that celery has a variety of biological functions such as antioxidant, anti-inflammatory, anti-tumor, and central calm. The celery has an absorption peak at 270 nm and can be used to determine its content using HPLC. \u0026 nbsp;

Instruments and reagents required in the test: High-performance liquid chromatograph (C18 column (4.6 × 250 mm), UV detector (VWD), desktop centrifuge, adjustable pipe gun, mortar / homogenizer, brown EP T, needle filter (50, organic system, 0.45 μm), syringe, filter, filtration Membrane (organic, water), brown into S bottles (50, 1.5 mL), acetonitrile (chromatography, 500 mL), super pure water, phosphoric acid (analysis pure), methanol (analysis pure), 5 ml white plastic reagent Bottle, 2 ml EP T. \u0026 nbsp;

Product content: \u0026 nbsp;

extraction Liquidity: 90 mL × 1 bottle of liquid, 4 ° C.

Standard: Powder × 1, 4 ° C to prevent light. Adding 2 mL of methanol was added to prepare a standard solution of 1 mg / mL of celery, and stored at 4 ° C to avoid direct sunlight. After 4 ° C sealing, there was solid precipitation, and the micro-heat promotion in a 50 ° C water bath.

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