GB 5009.248-2016: Translated English of Chinese Standard. (GB5009.248-2016): National food safety standard - Determination of lutein in foods
https://www.chinesestandard.net, 8 Ara 2018 - 12 sayfa
This Standard specifies the liquid chromatography for the determination of lutein in foods. This Standard applies to liquid chromatography determination of lutein in infant formula, dairy products, frozen drinks, rice and flour products, bakery products, jams, jellies, and beverages.
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Instruments and equipment
Analysis results expression
Appendix A Method for correction of standard solution concentration
Appendix B Liquid chromatogram of standard solution
Diğer baskılar - Tümünü görüntüle
50 mL polypropylene accurate to 0.01 Accurately WEIGH adduct alumina solid phase arithmetic mean bakery nuts BHT ethanol solution CENTRIFUGE at 4500 chromatographically pure combined and concentrated concentrated under reduced constant volume cyclohexane detection limit Determination of lutein Diethyl ether diode array detector dissolve and dilute ethanol solution 3.2.4 extraction solvent 3.2.3 filter membrane 3.6 flour products g accurate g of BHT GB/T infant formula iodine limit of quantitation liquid chromatography determination lutein in foods lutein standard solution milk powder milliliter mL of ethanol mL of extraction mL polypropylene centrifuge N-hexane nearly dry neutral alumina solid oscillate and extract oscillate to dissolve phase extraction cartridge PIPETTE potassium hydroxide solution pressure at room r/min repeatedly EXTRACT twice residue and dilute rice and flour room temperature sample solution sampling amount solid phase extraction spectrophotometer standard solution concentration standard stock solution Standard working solutions temperature until nearly tert-butyl total peak area vortex oscillate