乳果糖 糖，糖醇，有机酸标准品
乳果糖及乳果糖检测相关试剂
乳果糖 含量: 98.0% 规格：100mg
中文名称:乳果糖
中文别名:4-O-β-D-吡喃半乳糖基-D-果糖;乳酮糖;半乳醣甙果糖
英文名称:Lactulose
CAS：4618-18-2
分子式:C12H22O11
乳果糖检测用相关酶
230011 β-D-半乳糖苷酶Beta-galactosidase（GAL） CAS：9031-11-2
活性：>50u/mg 规格：5ku；25KU
230010 葡萄糖氧化酶 Glucose Oxidase（GOD）CAS：9001-37-0
活性：>150u/mg 规格：100ku
230018 过氧化氢酶 CAS：9001-05-2 活性： 大于4万U/MG 规格：50mg
230013 己糖激酶Hexokinase（HK）CAS：9001-51-8
活性：>150u/mg 规格：10KU
230012 葡萄糖-6-磷酸脱氢酶lucose-6-phosphate dehydrogenase（G6PD）
CAS：9001-40-5 活性：>150U/mg 规格：10ku
Type III, ammonium sulfate suspension, ≥400 units/mg protein 规格：1ku；5ku
250027 -腺苷三磷酸二钠盐 5'-ATP 2Na（ATP）CAS：987-65-5
含量：>98.0% 规格：5g；10g；25g
250028 β-烟酰胺腺嘌呤二核苷酸磷二钠β-Nicotinamide adenine dinucleotide phosohate disodium salt trihydrate（β-NADP；NADP）
CAS：24292-60-2 含量：>98.0% 规格：100mg；1g；5g
乳果糖检测试剂盒Lactulose Assay Kit：50次次The Lactulose Assay Kit is suitable for the specific, rapid and sensitive measurement and analysis of lactulose in milk and milk-based samples. Reagents included in this kit may also be prepared for use in the procedure described by ISO Method 11285:2004.
UV-method for the determination of Lactulose in milk and
foodstuffs containing dairy products
Principle:
(β-galactosidase)
(1) Lactulose + H2O → D-galactose + D-fructose
(glucose oxidase + catalase + H2O2)
(2) D-Glucose + H2O + O2 → D-gluconic acid + H2O2
(hexokinase)
(3) D-Fructose + ATP → F-6-P + ADP
(phosphoglucose isomerase)
(4) F-6-P → G-6-P
(glucose-6-phosphate dehydrogenase)
(5) G-6-P + NADP+ → gluconate-6-phosphate + NADPH + H+
(gluconate-6-phosphate dehydrogenase)
(6) Gluconate-6-phosphate + NADP+ → ribulose-5-phosphate + NADPH
+ CO2 + H+
foodstuffs containing dairy products
Principle:
(β-galactosidase)
(1) Lactulose + H2O → D-galactose + D-fructose
(glucose oxidase + catalase + H2O2)
(2) D-Glucose + H2O + O2 → D-gluconic acid + H2O2
(hexokinase)
(3) D-Fructose + ATP → F-6-P + ADP
(phosphoglucose isomerase)
(4) F-6-P → G-6-P
(glucose-6-phosphate dehydrogenase)
(5) G-6-P + NADP+ → gluconate-6-phosphate + NADPH + H+
(gluconate-6-phosphate dehydrogenase)
(6) Gluconate-6-phosphate + NADP+ → ribulose-5-phosphate + NADPH
+ CO2 + H+
