Megazyme总膳食纤维快速整合试剂盒

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Megazyme总膳食纤维快速整合试剂盒
上海金畔生物科技有限公司
品牌：Megazyme

英文名：Rapid Integrated Total Dietary Fiber Assay Kit

货号：K-RINTDF

规格：100 assays per kit

K-RINTDF DOWNLOAD 

This test kit is suitable for the measurement and analysis of Total Dietary Fiber as per Codex Alimentarius definition, updated to be more consistent with in vivo conditions in the human small intestine, i.e. a 4 h incubation time. Under these conditions more accurate measurement of resistant starch is obtained, including phosphate cross-liked starch (RS4). Use of higher enzyme concentrations ensures that resistant maltodextrins produced from non-resistant starch under the incubation conditions of the Integrated Total Dietary Fiber procedure (AOAC Methods 2009.01 and 2011.25 are no longer produced.
In this rapid, improved method, the incubation time with PAA + AMG is reduced to 4 h and the levels of both PAA and AMG are increased to ensure that resistant starch levels obtained with a set of control samples are consistent with ileostomy data. Under these conditions, the DF values obtained for most samples are the same as those obtained with AOAC Methods 2009.01 and 2011.25.
The dietary fiber fractions that are measured with this method are:
1. High Molecular Weight Dietary Fiber (HMWDF) including Insoluble Dietary Fiber (IDF) and Low Molecular Weight Soluble Dietary Fiber (SDFS; soluble dietary fiber which is soluble in the presence of 78% aqueous ethanol), or
2. Insoluble dietary fiber (IDF), Higher Molecular Weight Soluble Dietary Fiber (SDFP; water soluble dietary fiber that precipitates in the presence of 78% aqueous ethanol) and SDFS.
The enzymes used in this method are high purity and effectively devoid of contaminating enzymes active on other dietary fiber components such as β-glucan, pectin and arabinoxylan. They are supplied as freeze-dried powders; allowing the use of glycerol as an internal standard.

For the determination of Total Dietary Fiber in cereal products, foodstuffs, feeds and other materials. 

Principle:
              (Pancreatic α-amylase + amyloglucosidase)
(1) Non-resistant starch + H2O → D-glucose

                      (protease)
(2) Protein + H2O → peptides

(3) IDF (including resistant starch) and alcohol precipitated 
     soluble DF (SDFP) determined gravimetrically

(4) Alcohol soluble DF (SDFS) determined by HPLC

(5) Ash and residual protein determined on DF residues 
     and subtracted

Kit size:                             100 assays
Method:                              Hydrolysis/removal of non-dietary 
                                          fibre components
Total assay time:                ~ 3 h work (over 1-2 days)
Detection limit:                   0.5-100% of sample weight
Application examples: 
Food ingredients, food products and other materials
   

* See McCleary, B. V., Sloane, N & Draga, A. (2015). Determination of total dietary fibre and available carbohydrates: a rapid integrated procedure that simulates in vivo digestion. Starch /Starke, 66, 1-24.

Advantages

  • More rapid measurement – incubation time with PAA + AMG reduced to 4 h in comparison with AOAC 2009.01 (increased levels of enzyme employed)
     
  • DF values for most samples are very similar to those obtained with AOAC Method 2009.01
     
  • Rapid Integrated Total Dietary Fiber method removes all of the limitations that have been identified with AOAC Method 2009.01*
     
  • All reagents stable for > 2 years after preparation
     
  • The method is consistent with the CODEX Alimentarius definition of dietary fiber
     
  • Mega-Calc™ software tool is available from our website for hassle-free raw dataprocessing
     
  • Very competitive price (cost per test)

 

 Q1. How should I prepare the required 78% ethanol solution?

A volume reduction occurs on mixing water with 95% ethanol (or IMS). 1 L of 78% ethanol is prepared by adding 821 mL 95% ethanol (or IMS) to 207 mL H2O.
If using a 1 L volumetric flask, this is best accomplished by placing 821 mL 95% ethanol (or IMS) into the volumetric flask. Dilute to volume with deionised water. Mix well. Check the level and if necessary add more deionised water to bring it back up to the 1 L mark. 

  • 应用范围：

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Megazyme产品所有分类：
生物及食品酶法试剂盒(Assay Kits)
膳食纤维/淀粉(Dietary Fiber/Starch) 单/双糖(Mono/Disaccharides) 多糖(Polysaccharides) 醇类(Alcohols) 有机酸(Organic Acids) 亚硫酸盐/氮(Sulfite/Nitrogen) 活性酶(Enzyme Activity) 试剂混合物(Reagent Mixtures) 其它(Other)
酶(Enzymes)
活性酶(Carbohydrate Active enZYmes )
淀粉酶(Amylases )
阿拉伯树胶酸(Arabinanases)
阿拉伯呋喃(Arabinofuranosidases)
纤维二糖水解(Cellobiohydrolases)
纤维素酶(Cellulases)
酯酶(Esterases)
果糖酶＆果糖苷酶(Fructanases & Fructosidases)
岩藻糖苷酶(Fucosidases)
半乳聚糖酶(Galactanases)
半乳糖苷酶(Galactosidases)
葡聚糖酶(Glucanases)
葡萄糖苷酶(Glucosidases)
葡糖醛酸糖苷(Glucuronidases)
已糖胺酶类(Hexosaminidiases)
裂解酶(Lyases)
甘露聚糖酶(Mannanases)
甘露糖苷酶(Mannosidases)
支链淀粉酶(Pullulanases)
唾液酸酶(Sialidases)
木聚糖酶(Xylanases)
糖苷酶(Xylosidases)
木葡聚糖酶(Xyloglucanases)
多聚半乳糖醛酸(内切)酶(Polygalacturonases)
其它酶(Other Activities)
分析酶(Analytical Enzymes)
脱氢酶(Dehydrogenases)
异构酶(Isomerases)
激酶(Kinases)
磷酸酶(Phosphatases)
蛋白酶(Proteases)
其他活性酶(Other Activities)
糖类活性酶(Glycobiology Enzymes)
酶底物( Chromogenic Substra