乳酸快速检测试剂盒, D-/L-Lactic Acid (D-/L-Lactate) (Rapid) Assay Kit, 货号：K-DLATE

来源：作者：人气：-发表时间：2014-11-07 15:30:00【大中小】

乳酸检测试剂盒产品货号：K-DLATE

品牌：Megazyme
产品货号：K-DLATE
产品品名：乳酸检测试剂盒
英文品名：D-/L-Lactic Acid (D-/L-Lactate) (Rapid) Assay Kit
规格型号：100 assays (50 of each) per kit

For the rapid and specific concurrent assay of L-lactic acid(L-lactate) and D-lactic acid (D-lactate) in beverages, meat, dairy andfood products. (100 determinations per kit; 50 of each).

INTRODUCTION:

D- and L-lactic acid are found in many foods and beverages. Producednaturally by lactic acid bacteria, D- and L-lactic acid are found inmany fermented milk products such as yoghurt and cheese, and also inpickled vegetables, and cured meats and fish. L-Lactic acid issupplemented into foods and beverages (E270) where a tart flavour isdesired, and is widely used as a non-volatile acidulant. In the eggindustry, L-lactic acid is a quality indicator, where levels above 200 mg/kg indicate spoilage by contamination or incubation. Similarly,the quality of milk and fruit juice can be established by measurement ofthe D- and L-lactic acid content. In the wine industry, the course ofmalolactic fermentation is monitored by following the falling level of L-malic acid, and the increasing level of L-lactic acid. The productionof D-lactic acid can indicate wine spoilage. In the chemical industry,both D- and L-lactic acid are raw materials in the production of compounds such as polylactides and biologically degradable polymers,and applications also exist for these acids in cosmetics and pharmaceuticals.

KITS:

Kits suitable for performing 50 concurrent determinations of D- andL-lactic acid are available from Megazyme. The kits contain the fullassay method plus:
Bottle 1: (x2) Buffer (25 mL, pH 10.0) plus D-glutamate and sodiumazide (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-Glutamate-pyruvate transaminase suspension(2.2 mL).Stable for > 2 years at 4°C.
Bottle 4: L-Lactate dehydrogenase suspension (1.1 mL).Stable for > 2 years at 4°C.
Bottle 5: D-Lactate dehydrogenase suspension (1.1 mL).Stable for > 2 years at 4°C.
Bottle 6: D-/L-Lactic acid standard solution (5 mL, 0.15 mg/mL of each)in 0.02% (w/v) sodium azide.Stable for > 2 years at 4°C.