L-苹果酸检测试剂盒 英文名称: :L-Malic Acid (Regular) Assay Kit |
型号:null 产品货号: K-LMALR |
价格:请致电:010-57128832,18610462672 |
品牌: 爱尔兰 |
品牌: Megazyme 产品货号:K-LMALR 品牌:Megazyme 产品品名:L-苹果酸检测试剂盒 英文品名:L-Malic Acid (Regular) Assay Kit 规格型号:58 assays (manual) / 580 assays (microplate) For the specific assay of L-malic acid (L-malate) in beverages and food products. INTRODUCTION: As a component of the citric acid cycle, L-malic acid (L-malate) is found in all living organisms. Its quantitative determination is especially important in the manufacture of wine, beer, bread, fruit and vegetable products, as well as in cosmetics and pharmaceuticals. It is one of the most important fruit acids, and has the highest concentration of all acids in wine. In the wine industry, the level of L-malic acid is monitored, along with L-lactic acid, during malolactic fermentation. L-Malic acid finds many applications as a food preservative (E296) and flavour enhancing compound, such as in the manufacture of low calorie drinks. This booklet describes a manual spectrophotometric and a microplate method for the quantitative determination of L-malic acid. However, an alternative method tailored towards the small winery is also available from Megazyme that is based on the use of an inexpensive colorimeter, the MegaQuantTM meter (see product D-LMALMQ). A third kit for L-malic acid has been optimised for auto-analyser applications (see product K-LMALAF). KITS: Kits suitable for performing 58 / 116 assays in manual format (or 580 / 1160 assays in microplate format) are available from Megazyme. The kits contain the full assay method plus: 58 Determinations Kit (cat. no. K-LMALR) Bottle 1: Buffer (6 mL, pH 10.0) plus L-glutamate and sodium azide (0.02% w/v) as a preservative. Stable for > 2 years at 4°C. Bottle 2: NAD+ plus PVP. Stable for > 5 years at -20°C. Bottle 3: Glutamate-oxaloacetate transaminase suspension (1.25 mL). Stable for > 2 years at 4°C. Bottle 4: L-Malate dehydrogenase suspension (1.25 mL). Stable for > 2 years at 4°C. Bottle 5: L-Malic acid standard solution (5 mL, 0.15 mg/mL). Stable for > 2 years at 4°C. 116 Determinations Kit (cat. no. K-LMALL) Bottle 1: Buffer (12 mL, pH 10.0) plus L-glutamate and sodium azide (0.02% w/v) as a preservative. Stable for > 2 years at 4°C. Bottle 2: (x2) NAD+ plus PVP. Stable for > 5 years at -20°C. Bottle 3: Glutamate-oxaloacetate transaminase suspension (2.5 mL). Stable for > 2 years at 4°C. Bottle 4: L-Malate dehydrogenase suspension (2.5 mL). Stable for > 2 years at 4°C. Bottle 5: L-Malic acid standard solution (5 mL, 0.15 mg/mL). Stable for > 2 years at 4°C. 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! |