Propargyl-PEG10-amine is a PEG reagent that is reactive with carboxylic acids, activated NHS esters, carbonyls (ketone, aldehyde) etc. The propargyl group enables Click Chemistry reactions with azide-bearing compounds or biomolecules; copper catalyst is required. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
Propargyl-PEG10-amine is a PEG reagent that is reactive with carboxylic acids, activated NHS esters, carbonyls (ketone, aldehyde) etc. The propargyl group enables Click Chemistry reactions with azide-bearing compounds or biomolecules; copper catalyst is required. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
bis-PEG2-endo-BCN is a click chemistry reagent, The BCN group enable copper free click chemitry with azide-tagged molecules. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
bis-PEG2-endo-BCN is a click chemistry reagent, The BCN group enable copper free click chemitry with azide-tagged molecules. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
K-DSTRS
SKU: 700004277
40 assays of each per kit
| Content: | 40 assays of each per kit |
| Shipping Temperature: | Ambient |
| Storage Temperature: | Short term stability: 2-8oC, Long term stability: See individual component labels |
| Stability: | > 2 years under recommended storage conditions |
| Analyte: | Digestible Starch, Resistant Starch, Total Starch |
| Assay Format: | Spectrophotometer |
| Detection Method: | Absorbance |
| Wavelength (nm): | 510 |
| Signal Response: | Increase |
| Linear Range: | 4 to 100 μg of D-glucose per assay |
| Limit of Detection: | 3.1 g/100 g |
| Reaction Time (min): | ~ 360 min |
| Application examples: | Plant materials, starch samples and other materials. |
The Digestible and Resistant Starch Assay Kit (K-DSTRS) for the determination of digestible, resistant and total starch in starch samples, plant and other materials.
This method is based on the research of Englyst et al. (Ref) with some modifications. Digestion is performed using saturating levels of pancreatic α-amylase (PAA) and amyloglucosidase (AMG), but in stirred containers rather than shaken tubes, to simplify sample removal.
In line with Englyst definitions:
Rapidly digestible starch (RDS) is that starch which is digested within 20 min.
Slowly digestible starch (SDS) is that starch which is digested between 20 and 120 min.
A new term, ‘Total digestible starch (TDS)’ is introduced (and measured) to cover all starch that is digested within 4 h (the average time of residence of food in the human small intestine).
Resistant starch (RS) then, is that starch which is not digested within 4 h.
The incubation conditions parallel those used in AOAC Method 2017.16, a new, rapid integrated procedure for the measurement of total dietary fiber (Megazyme method K-RINTDF). This method is physiologically based and designed to fit the definition of DF announced by Codex Alimentarius in 2009.
See our full range of starch and dietary fiber assay kits.
The Digestible and Resistant Starch Assay Kit (K-DSTRS) for the determination of digestible, resistant and total starch in starch samples, plant and other materials.
K-ARGA
SKU: 700004264
115 assays (manual) / 1150 assays (microplate) / 1150 assays (auto-analyser)
| Content: | 115 assays (manual) / 1150 assays (microplate) / 1150 assays (auto-analyser) |
| Shipping Temperature: | Ambient |
| Storage Temperature: | Short term stability: 2-8oC, Long term stability: See individual component labels |
| Stability: | > 2 years under recommended storage conditions |
| Analyte: | L-Arabinose, D-Galactose |
| Assay Format: | Spectrophotometer, Microplate, Auto-analyser |
| Detection Method: | Absorbance |
| Wavelength (nm): | 340 |
| Signal Response: | Increase |
| Linear Range: | 4 to 80 μg of L-arabinose or D-galactose per assay |
| Limit of Detection: | 0.58 mg/L (L-arabinose), 0.69 mg/L (D-galactose) |
| Reaction Time (min): | ~ 12 min (L-arabinose), ~ 6 min (D-galactose) |
| Application examples: | Analysis of hydrolysates of oligo- and polysaccharides (e.g. arabinan, arabinoxylan, galactan, arabinogalactan), milk, dairy products, foods containing milk (e.g. dietetic foods, bakery products, baby food, chocolate, sweets and ice-cream), food additives (e.g. sweeteners), cosmetics, pharmaceuticals and other materials (e.g. biological cultures, samples, etc.). |
| Method recognition: | Novel method |
The L-Arabinose/D-Galactose test kit is a simple, reliable and accurate UV method for the measurement and analysis of L-arabinose and/or D-galactose in various materials including foods, feeds, beverages and plant products.
Note for Content: The number of manual tests per kit can be doubled if all volumes are halved. This can be readily accommodated using the MegaQuantTM Wave Spectrophotometer (D-MQWAVE).
See more of our monosaccharide assay kits.
Advantages
The L-Arabinose/D-Galactose test kit is a simple, reliable and accurate UV method for the measurement and analysis of L-arabinose and/or D-galactose in various materials including foods, feeds, beverages and plant products.
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