Amresco L-色氨酸(L-Tryptophan)E800-100g

Amresco L-色氨酸(L-Tryptophan)E800-100g

L-色氨酸 ( L-胰化蛋白氨基酸 )

英文名称:L-Tryptophan

级别:USP Grade
说明: C11H12N2O2
MW:204.23
Purity≥98.5%
Store:18~26℃

 

Sigma代理  Abcam代理  CST代理  Santa Cruz代理  Biolegend代理 ebioscience代理  Invitrogen代理   millipore代理  BD流式抗体代理   GeneTe x抗体代理  Novus抗体代理   R&D代理 Biovison代理  Jackson代理  MBL抗体代理  ProSpec抗体代理  Bethyl抗体代理  Antibody Revolution抗体代理  Torrey Pines Biolabs代理  Amresco代理  MPbio代理  Laysan bio代理  NANOCS代理  Avanti代理  wako代理  lumiprobe代理(活性荧光染料)   NEB酶代理  Roche酶代理  Toyobo酶代理   USP代理  EP代理  Dr代理  TRC代理  TCI代理  Reagecon代理  Megazyme代理 Hampton代理(蛋白结晶) whatman代理(滤膜滤纸) GE代理(蛋白纯化) Corning康宁代理  Axygen代理 Falcon代理  NISSUI日水代理 Himedia代理 OXOID代理  BD培养基代理 Ludger代理(糖蛋白分析产品)  Eppendorf代理  Labnet代理  标准品代理 抗体代理 酶试剂代理  培养基代理 耗材代理 Elisa试剂盒代理 。

Beta葡聚糖[酵母和蘑菇]检测试剂盒

Beta葡聚糖[酵母和蘑菇]检测试剂盒 β-Glucan Assay Kit (Yeast & Mushroom)

产品名称:Beta葡聚糖[酵母和蘑菇]检测试剂盒

英文名称:Mushroom and yeast beta-glucan assay Kit

货号: K-YBGL

型号规格:100次

优点:成本低;所有试剂配制后的稳定性〉2年;只有酶试剂盒可用;;方法简单;包含标准品

检测原理:

检测方法:比色法

检测波长:510nm;

总检测时间:100min;

检测限:样品重量的1-100%;

适用样品:酵母制备、蘑菇制备及其他原料;

方法认证:新方法

商品说明:

For the measurement of 1,3:1,6-ß-glucan and α-glucan in yeast preparations. Content: 100 assays per kit

Colourimetric method for the determination of Yeast and 
Mushroom β-Glucan in yeast, mushroom, foodstuffs and 
other materials

Principle:
(conc. HCl, 30°C, 45 min)
(1) 1,3:1,6-β-Glucan + 1,3-β-glucan + α-glucan + H2O → 
soluble glucan

(1.3 M HCl, 100°C, 2 h)
(2) Soluble glucan + H2O → D-glucose + laminarisaccharides (trace)

(exo-1,3-β-glucanase + β-glucosidase)
(3) Laminarisaccharides + H2O → D-glucose

(glucose oxidase)
(4) D-Glucose + H2O + O2 → D-gluconate + H2O2

(peroxidase)
(5) 2H2O2 + p-hydroxybenzoic acid + 4-aminoantipyrine → 
 quinoneimine + 4H2O

(amyloglucosidase)
(6) α-Glucan + H2O    →    D-glucose

Kit size:                            100 assays
Method:                            Spectrophotometric at 510 nm
Total assay time:              ~ 100 min
Detection limit:                 1-100% of sample weight
Application examples:
Yeast preparations, mushroom preparations and other materials
Method recognition:        Novel method

Advantages

  • Very cost effective
  • All reagents stable for > 12 months after preparation
  • Only enzymatic kit available
  • Simple format
  • Mega-Calc™ software tool is available from our website for hassle-free raw data processing
  • Standard included

乳果糖检测试剂盒 Lactulose Assay Kit

乳果糖检测试剂盒 Lactulose Assay Kit

产品货号:K-LACTUL

品牌:Megazyme

产品品名:乳果糖检测试剂盒

英文品名:Lactulose Assay Kit

规格型号:50 assays

商品说明:

乳果糖快速检测方法—Megazyme乳果糖快速检测试剂盒

Megazyme乳果糖检测试剂盒采用酶法分析原理,可定量检测鲜奶、UHT奶、浓缩乳和奶粉等各种乳品中的乳果糖。

与农业部新标准采用相同的检测原理和方法

该试剂盒采用ISO方法11285:2004,经过改进后,更加快速和灵敏

灵敏度是传统己糖激酶法的两倍

成本低

试剂配制后可稳定保存2年

采用试剂盒形式,包含检测必需的所有酶

提供计算软件,使数据处理更方便

包含标准品

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+

Kit size: 50 assays
Method: Spectrophotometric at 340 nm
Reaction time: ~ 120 min
Detection limit: 4.8 mg/L
Application examples:
Milk, dairy products and foods containing milk
Method recognition: Novel method

Advantages

  • Twice the sensitivity of traditional hexokinase based lactulose methods
  • Very cost effective
  • All reagents stable for > 2 years after preparation
  • Mega-Calc™ software tool is available from our website for hassle-free raw data processing
  • Standard included

相关产品:

K-GLUM    葡甘露聚糖检测试剂盒    Glucomannan Assay Kit
K-GLUT    L-谷氨酸[谷氨酸盐/谷氨酸酯/味精/谷氨酸单钠]检测试剂盒    L-Glutamic Acid Assay Kit
K-HDBA    D-3羟丁酸检测试剂盒    D-3-Hydroxybutyric Acid Assay Kit
K-INOSL    肌醇检测试剂盒    myo-Inositol Assay Kit
K-INTDF    综合总膳食纤维检测试剂盒    Integrated Total Dietary Fiber Assay Kit
K-ISOC    D-异柠檬酸检测试剂盒    D-Isocitric Acid Assay Kit
K-LACGAR    乳糖/D-半乳糖[快速]检测试剂盒    Lactose/Galactose Assay Kit (Rapid)
K-LACSU    乳糖/蔗糖/D-葡萄糖检测试剂盒    Lactose/Sucrose/D-Glucose Assay Kit
K-LACTUL    乳果糖检测试剂盒    Lactulose Assay Kit
K-LARGE    左旋精氨酸/尿/氨[快速]检测试剂盒    L-Arginine/Urea/Ammonia Assay Kit

甘油检测试剂盒 Glycerol GK Assay Kit

甘油检测试剂盒 Glycerol GK Assay Kit

产品货号:K-GCROL

产品品名: 甘油检测试剂盒

英文品名 :Glycerol Assay Kit

规格型号: 70 assays per kit

甘油是食品加工业中通常使用的甜味剂和保湿剂,大多出现在运动食品和代乳品中。

上海甄准生物提供 甘油检测试剂盒 ,紫外吸光度法( 340nm )测定食品、饮料及其他原料中的甘油。

原理:

反应时间: 5min

检测限: 0.37mg/L

适用样品: 葡萄酒(葡萄汁)、啤酒、烈酒、醋、杏仁蛋白软糖、果汁、软饮料、牙膏、蜂蜜、烟、纸(硬纸板)、化妆品

优点:

l    新型的片剂形式增加了稳定性

l    价格低廉(每次检测成本)

l    所有试剂配制后的稳定性 >2 年

l    反应快

l    该方法已通过 OIV , MEBAK 以及德国和瑞士的认证

商品说明:

The Glycerol GK test kit is a simple, reliable and accurate method for the measurement and analysis of glycerol in beverages, foodstuffs and other material. Based on use of ADP-glucokinase and increase in absorbance on conversion of NAD+ to NADH.
Extended cofactors stability. Dissolved cofactors stable for > 1 year at 4oC.
Suitable for manual, auto-analyser and microplate formats.

UV-method for the determination of Glycerol in foodstuffs,
beverages and other materials

Principle:
(glycerokinase)
(1) Glycerol + ATP → L-glycerol-3-phosphate + ADP

(ADP-GK)
(2) ADP + D-glucose → G-6-P + AMP

(glucose-6-phosphate dehydrogenase)
(3) G-6-P + NAD+ → gluconate-6-phosphate + NADH + H+

Kit size: 70 assays (manual) / 700 (microplate)
/ 600 (auto-analyser)
Method: Spectrophotometric at 340 nm
Reaction time: ~ 7 min
Detection limit: 0.37 mg/L
Application examples:
Wine (and grape juice), beer, spirits, vinegar, marzipan, fruit juices,
soft drinks, toothpaste, honey, tobacco, paper (and cardboard),
cosmetics, pharmaceuticals, soap and other materials (e.g. biological
cultures, samples, etc.)
Method recognition: Novel method

Advantages

  • Novel tablet format for increased stability
  • Very competitive price (cost per test)
  • All reagents stable for > 2 years as supplied
  • Very rapid reaction
  • Positive reaction (assay proceeds with an increase in absorbance)
  • Mega-Calc™ software tool is available from our website for hassle-free raw data processing
  • Standard included
  • Suitable for manual, microplate and auto-analyser formats

维生素C[L-抗坏血酸]检测试剂盒

维生素C[L-抗坏血酸]检测试剂盒

产品货号:K-ASCO

品牌:Megazyme

产品品名:维生素C(L-抗坏血酸)检测试剂盒

英文品名:Ascorbic Acid (L-Ascorbate) Assay Kit

规格型号:40 assays (manual) / 400 assays (microplate) / 400 assays (auto-analyser)

商品说明:

For the specific assay of L-ascorbic acid in beverages, meat, flour, dairy and vegetable products. Content:40 assays per kit

Colourimetric method for the determination of L-Ascorbic Acid 
in foodstuffs, feed, wine and other materials

Principle:
                        (5-methylphenazinium methosulphate)
(1) L-Ascorbic acid + R-H2 + MTT → dehydroascorbate +                                                                                         MTT-formazan + H+
                            (ascorbic acid oxidase)
(2) L-Ascorbic acid + ½O2 → dehydroascorbate + H2O

Kit size:                             40 assays (manual) / 400 (microplate)
/ 400 (auto-analyser)
Method:                             Spectrophotometric at 578 nm
Reaction time:                   ~ 8 min
Detection limit:                  0.175 mg/L
Application examples:
Wine, beer, fruit juices, soft drinks, jam, milk, dairy products
(e.g. cheese), dietetic foods, baby foods, processed meat, baking
additives, fruit and vegetables (e.g. tomato and potato),
pharmaceuticals, feed and other materials (e.g. biological cultures,
samples, etc.)
Method recognition:
Methods based on this principle have been accepted by MEBAK

Advantages

  • Very competitive price (cost per test)
  • All reagents stable for > 6 months after preparation
  • Mega-Calc™ software tool is available from our website for hassle-free raw data processing
  • Standard included
  • Suitable for manual, microplate and auto-analyser formats