The L-Rhamnose Assay Kit for the measurement of L-rhamnose in plant extracts, culture media/supernatants and other materials is a simple, rapid method.
Short term stability: 2-8oC, Long term stability: See individual component labels
Stability:
> 1 year under recommended storage conditions
Analyte:
L-Rhamnose
Assay Format:
Spectrophotometer, Microplate, Auto-analyser
Detection Method:
Absorbance
Wavelength (nm):
340
Signal Response:
Increase
Linear Range:
5 to 100 µg of L-rhamnose per assay
Limit of Detection:
~ 1.2 mg/L
Reaction Time (min):
~ 5 min at 25oC or ~ 4 min at 37oC
Application examples:
Hydrolysates of plant material and polysaccharides, culture media / supernatants and other materials.
Method recognition:
Novel method
The L-Rhamnose Assay Kit for the measurement of L-rhamnose in plant extracts, culture media/supernatants and other materials is a simple, rapid method.
L-Rhamnose occurs naturally in the L-form and is commonly present as a component of the carbohydrate moiety of eukaryotic glycoproteins and in plant cell wall polysaccharides. The most abundant occurrence of L-rhamnose is within the pectic fraction of plant cell wall polysaccharides. L-Rhamnose is commonly used as a non-metabolisable marker along with lactulose for dual-permeability testing in the diagnosis of intestinal diseases such as Crohn’s disease or coeliac disease.
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).
All reagents stable for > 2 years after preparation
Only test kit available
Simple format
Rapid reaction (~ 5 min at 25oC or ~ 4 min at 37oC)
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
Other Products
N-(Propargyl-PEG4)-biocytin
Product Info
Document
Product Info
N-(Propargyl-PEG4)-biocytin is a biotin PEG reagent that is reactive with azide containing molecule via click chemistry. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
Document
N-(Propargyl-PEG4)-biocytin is a biotin PEG reagent that is reactive with azide containing molecule via click chemistry. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
Introducing the Fastin Assay Kit: Your Straightforward Solution for Elastin Quantification! Our user-friendly kit utilizes a dye-based method to measure elastin from in-vivo and in-vitro sources. It can be used to quantify various elastin forms, spanning from immature tropoelastin to mature, ‘insoluble’ elastin fibers.
Colorimetric Detection (513nm) (Endpoint)
Understanding Elastin: The Key to Tissue Flexibility
Tissues like lungs and arteries must maintain the ability to stretch and recoil repeatedly throughout an organism’s life. Elastin, a mature protein, is responsible for this elasticity and is usually present as insoluble fibers within the ECM. During development, these fibers are initially formed from a soluble precursor called tropoelastin.
What is the Fastin Assay?
The Biocolor Fastin assay is a user-friendly, dye-based means of quantifying elastins derived from both in-vivo and in-vitro sources. A variety of elastin forms can be assayed, from immature tropoelastin to mature ‘insoluble’ elastin fibres.
Further information on how the assay works can be found on the ‘Mode of Action‘ tab.
A list of suggested sample types can be found under the ‘Assay Specification‘ tab.
How does the Fastin assay detect Elastin?
The Fastin Dye Reagent contains an elastin-binding synthetic porphyrin, TPPS (5,10,15,20-tetraphenyl- 21H,23H-porphine). This affinity of TPPS for elastin was first observed when used as a ‘vital stain’ on live animals. Most tissues took up the dye initially but only elastin retained the TPPS molecules over time. [Winkelman, J. (1962), Cancer Res. 22, 589-596; Winkelman, J & Spicer, S. (1962), Stain Technol. 37, 303-305].
It has been proposed that the elastin binding of TPPS may be due to the retention of the acidic dye (which contains four charged sulfate groups) by the basic amino acid side chain residues of elastin.
How does the Fastin assay work?
Step 1. Incubation of samples containing soluble elastin with the Fastin Dye Reagent causes an elastin-dye complex to form. This insoluble complex then precipiates.
Step 2. Dye-labelled elastin is then isolated by centrifugation and the unbound dye removed. Elastin-bound dye is then eluted and measured spectrophotometrically.
Step 3. The elastin content of unknown samples can be calculated by comparison against a calibration curve prepared using a standard comprising water-soluble elastin (supplied with the kit).
Assay range
50 – 500µg/ml
Limit of Detection
50µg/ml
Detection Method
Colorimetric Detection (513nm) (Endpoint)
Measurements per kit
110 in total (allows a maximum of 48 samples to be run in duplicate alongside a standard curve).
Suitable Samples
In-vivo: tissues and fluids. Insoluble elastin will first require conversion to water soluble α-elastin using the oxalic acid reagents and extraction protocol supplied with the kit.
In-vitro: Elastin produced by cells during 2D/3D cell culture. NB elastin in conditioned cell media is typically below the detection limit of the kit.
Precautions
This kit is designed for research use only. Not for use in diagnostic procedures. Kit requires access to a centrifuge, heated water bath or block, as well as a spectrophotometer or colorimeter capable of absorbance detection at 513nm. Specific sample preparation protocols may require customer to provide further reagents, consult assay manual for further information.
Fastin elastin kit contents:
1. Dye Reagent (1x110ml)
2. α-elastin Reference Standard (1x5ml, 1.0 mg/ml soluble Bovine elastin)
6. 1.5ml micro-centrifuge tubes for dye-labelling reaction.
7. Assay kit manual
NB: Additional reagents may be required for sample preparation prior to assay. Consult manual or contact us for further details.
Document
Introducing the Fastin Assay Kit: Your Straightforward Solution for Elastin Quantification! Our user-friendly kit utilizes a dye-based method to measure elastin from in-vivo and in-vitro sources. It can be used to quantify various elastin forms, spanning from immature tropoelastin to mature, ‘insoluble’ elastin fibers.
Colorimetric Detection (513nm) (Endpoint)
Short term stability: 2-8oC, Long term stability: See individual component labels
Stability:
> 2 years under recommended storage conditions
Analyte:
L-Malic Acid
Assay Format:
Spectrophotometer, Microplate
Detection Method:
Absorbance
Wavelength (nm):
340
Signal Response:
Increase
Linear Range:
0.5 to 30 µg of L-malic acid per assay
Limit of Detection:
0.25 mg/L
Reaction Time (min):
~ 3 min
Application examples:
Wine, beer, fruit juices, soft drinks, candies, fruit and vegetables, bread, cosmetics, pharmaceuticals and other materials (e.g. biological cultures, samples, etc.).
Method recognition:
Methods based on this principle have been accepted by AOAC, EEC, EN, NF, NEN, DIN, GOST, OIV, IFU, AIJN, NBN, ISO and MEBAK
The K-LMAL-58A pack size has been discontinued (read more)
L-Malic Acid (Regular) Assay Kit, for the specific assay of L-malic acid (L-malate) in beverages and food 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).
Need other assay kits? View our full list of organic acid assay kits.
Advantages
PVP incorporated to prevent tannin inhibition
Both enzymes supplied as stable suspensions
Very competitive price (cost per test)
All reagents stable for > 2 years after preparation
Very rapid reaction (~ 3 min)
Mega-Calc™ software tool is available from our website for hassle-free raw data processing
