Short term stability: 2-8oC, Long term stability: See individual component labels
Stability:
> 2 years under recommended storage conditions
Analyte:
Pullulanase/Limit-Dextrinase
Assay Format:
Spectrophotometer
Detection Method:
Absorbance
Wavelength (nm):
400
Signal Response:
Increase
Limit of Detection:
0.18 U/mL for pullulanase preparations (50-fold dilution) 0.01 U/g for limit dextrinase in milled malt
Reproducibility (%):
~ 3%
Total Assay Time:
~ 10 min (Pullanase), ~ 30 min (Limit-Dextrinase)
Application examples:
Assay of microbial pullulanase preparations. Measurement of limit-dextrinase in malt extracts.
Method recognition:
Novel method
PullG6 assay for the measurement of pullulanase employs a water soluble defined substrate, namely 4,6-O-benzylidene-4-nitrophenyl-63-α-D-maltotriosyl-maltotriose (BPNPG3G3), coupled with the ancillary enzymes α-glucosidase and β-glucosidase. Upon hydrolysis of the substrate at the 1,6-α-linkage by pullulanase or limit-dextrinase, the released 4-nitrophenyl-β-maltotrioside is immediately hydrolysed to glucose and 4-nitrophenol by the concerted action of the α-glucosidase and β-glucosidase enzymes in the reagent mixture. The reaction is terminated and phenolate ions are developed by addition of dilute alkali. The absorbance is read at 400 nm and the value obtained correlates directly with pullulanase activity.
All reagents stable for > 1 year after preparation
Very specific
Simple format
Standard included
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Document
For scaling up and fully automating PCR setup and thermocycling.
With the Flex PCR Workstation, you can automate your PCR setup and thermocycling at the scale you need to increase efficiency, reduce errors, and save hands-on time. Configure your workstation with our on-deck Thermocycler for end-to-end automation, or with no Thermocycler for automated PCR setup with off-deck thermocycling.
Optional add-ons can be purchased at a 10% discount when ordered with the Flex PCR Workstation*
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5 x 106 cells 25 mg (for selected tissues) 100 μL 1 x 109 cells 1 x 108 cells 50 mg 50 mg
Time to Complete 10 Purifications
30 minutes
Average Yield:HeLa Cells (1 x 106 cells)HeLa Cells (1 x 106 cells)HeLa Cells (1 x 106 cells)
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