酵母葡聚糖酶检测试剂盒
产品名称: 酵母葡聚糖酶检测试剂盒
英文名称: Enzymatic Yeast Beta-Glucan Assay Kit
产品编号: K-EBHLG
产品价格: 0
产品产地: 爱尔兰
品牌商标: Megazyme
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使用范围: null
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品牌: Megazyme 产品货号:K-EBHLG 品牌:Megazyme 产品品名:酵母葡聚糖酶检测试剂盒 英文品名:Enzymatic Yeast Beta-Glucan Assay Kit 规格型号:50 assays per kit An enzymatic procedure for the measurement of 1,3:1,6-beta-glucan inyeast. Also measures 1,3-β-glucan. INTRODUCTION: (1-3)-β-Glucans are widely distributed in nature, especially in algae, fungi and yeast, but also in higher plants. They serve a variety of biological functions. They form the major structural components of cell walls, they act as storage carbohydrates and they sometimes play a protective role by forming at specific sites in response to particular stimuli such as wounding.1 Yeast β-glucan substantially enhances the function of the immune system by activating macrophages, one of the primary defences of the immune system. Literature indicates that the potent anti-tumour properties of polysaccharide fractions extracted from certain strains of mushrooms, in particular Grifola frondosa also known as Maitake, can be attributed to linear 6-branched (1-3)-β-glucan.2-4 Similar properties have recently been assigned to (1-3)(1-4)-β-glucans from cereal grains (e.g. oats and barley). The presence in wine of a particular high molecular weight (~ 800 Kd) β-glucan, produced by the fungus, Botrytis cinerea (grey rot) leads to clarification and filtration problems.5 Scleroglucan (from Sclerotium rofsii), an industrial thickening agent with remarkable thickening properties, has a very similar structure. Megazyme offers an acid hydrolysis/enzymic procedure (K-YBGL) for the determination of β-glucan in yeast and mushroom. That method is based on acid hydrolysis to measure total β-glucan and specific enzymic determination of α-glucan. β-Glucan is determined by difference. A totally enzymic procedure specific for β-glucan has been published by Danielson et al.6 The method employs Lyticase from Sigma-Aldrich and exo-1,3-β-glucosidase/β-glucanase from Megazyme. This method works well, but its widespread adoption is limited by the high cost of Lyticase. In this booklet we describe an alternate, simple enzymic procedure for the measurement of (1-3)(1-6)-β-glucan in yeast. The method also gives quantitation measurement of β-glucan in curdlan, laminarin and cereal β-glucan preparations. It does not give quantitative measurement of β-glucan in mushrooms, the reasons for which are currently being researched. KITS: Kits suitable for carrying out 50 assays are available from Megazyme. The kits contain the full assay method plus: Bottle 1: GlucazymeTM preparation (exo-1,3-β-glucanase, endo-1,3-β-glucanase, β-glucosidase and chitinase suspension), 2.2 mL. Stable for > 4 years at 4°C. Bottle 2: GOPOD Reagent Buffer. Buffer (48 mL, pH 7.4), p-hydroxybenzoic acid and sodium azide (0.4% w/v). Stable for > 4 years at 4°C. Bottle 3: GOPOD Reagent Enzymes. Glucose oxidase plus peroxidase and 4-aminoantipyrine. Freeze dried powder. Stable for > 5 years at -20°C. Bottle 4: D-Glucose standard solution (5 mL, 1.5 mg/mL) in 0.2% w/v benzoic acid. Stable for > 5 years at room temperature. Bottle 5: Control yeast β-glucan preparation (~ 2 g, β-glucan content stated on the bottle label). Stable for > 5 years at room temperature. Bottle 6: Control starch preparation (~ 2 g, 96% starch dwb). Stable for > 5 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!