D-苹果酸检测试剂盒 D-Malic Acid Assay Kit 产品货号:K-DMAL 英文名称: D-Malic Acid Assay Kit |
型号:null 产品货号: K-DMAL |
价格:请致电:010-57128832,18610462672 |
品牌: 爱尔兰 |
品牌: Megazyme 产品货号:K-DMAL 品牌:Megazyme 产品品名:D-苹果酸检测试剂盒 英文品名:D-Malic Acid Assay Kit 规格型号:100 assays (manual) / 1000 assays (microplate) / 1100 assays(auto-analyser) per kit For the specific assay of D-malic acid (D-malate) in beverages and food products. INTRODUCTION: In Nature, essentially all malic acid is produced in the L-racemic form (the exception being a few micro-organisms which produce D-malic acid). Freshly pressed fruit juices contain D-malic acid at the detection limit (~ 10 mg/L). Malic acid is produced commercially in the D-/L-racemic mixture by the catalytic hydration of maleic anhydride and can replace citric acid in food products as an acidulant and flavour enhancer. It finds application in flavoured fruit drinks, juices and wines. The detection of D-malic acid in juices or wine indicates that it has been added. The legal situation concerning the addition of D-/L-malic acid to juice or wine varies between countries. KITS: Kits suitable for performing 100 assays in manual format (or 1100 assays in auto-analyser format or 1000 assays in microplate format) are available from Megazyme. The kits contain the full assay method plus: Bottle 1: Buffer (25 mL, pH 8.0) plus sodium azide (0.02% w/v) as a preservative. Stable for > 2 years at 4°C. Bottle 2: (x2) NAD+. Stable for > 5 years at -20°C. Bottle 3: D-Malate dehydrogenase suspension (2.2 mL). Stable for > 2 years at 4°C. Bottle 4: D-Malic acid standard solution (5 mL, 0.20 mg/mL). Stable for > 2 years at room temperature. 温馨提示:需要详细的产品使用说明书,请联系甄准生物客服人员,我们将竭诚为您服务。 甄准,甄心倾听您每一个标准! |