DBCO-PEG2-PFP ester

K-LOLAC

SKU: 700004314

65 assays per kit

Content:	65 assays 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:	Lactose
Assay Format:	Spectrophotometer
Detection Method:	Absorbance
Wavelength (nm):	340
Signal Response:	Increase
Linear Range:	1 to 50 µg of lactose (or 0.50 to 25 µg of D-glucose)
Limit of Detection:	1.62 mg/L
Reaction Time (min):	~ 10 min
Method recognition:	AOAC Method 2020.08

The K-LOLAC test kit offers a rapid, novel, sequential measurement of free-glucose and lactose in conventional, low-lactose and lactose-free dairy products. This sequential assay format reduces the manual input required by an analyst when compared to traditional lactose assay formats and therefore improves both accuracy and efficiency. When used in combination with the Megazyme Creep Calculator provided, the β-galactosidase employed in this kit allows for the selective measurement of lactose in the presence of galacto-oligosaccharides (GOS) which are commonly found in lactose-free dairy products. This constitutes a significant improvement over existing commercially available lactose assay kits which typically overestimate lactose content in lactose-free samples due to the unselective hydrolysis of GOS by β-galactosidase. Lastly, the sensitivity of the K-LOLAC assay kit has been doubled through the use of a cascade biochemical pathway, helping to significantly reduce the LOD and LOQ for the assay.

We offer more monosaccharide and oligosaccharide assay kit products.

View Lactose Assay Kit (K-LOLAC) Flyer

View Product Poster Presentation – Single Lab Validation for K-LOLAC.

Validation of Methods

Advantages

• World’s first sequential assay for lactose, i.e. improves accuracy and efficiency 
• Contains a specific β-galactosidase for the selective measurement of lactose in dairy products 
• Efficient pre-treatment step allows for accurate measurement of lactose in “low-lactose” and “lactose-free” dairy products 
• Lower limit of detection (LOD) than any other commercially available enzymatic lactose detection method. LOD at 1.62 mg/L 
• Very competitive price (cost per test)

Biotin-PEG2-C4-alkyne is biotinylation reagent that can react with azide moiety in Cu(I)-catalyzed Click Chemistry reaction to form a stable triazole linkage. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Biotin-PEG2-C4-alkyne is biotinylation reagent that can react with azide moiety in Cu(I)-catalyzed Click Chemistry reaction to form a stable triazole linkage. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Description 

The ExcelRT™ One-Step RT-qPCR kit (TaqMan, ROX) is designed for reverse transcription and quantitative real-time analysis of a specific target RNA by one-step reaction. The ExcelRT™ One-Step RT-qPCR kit (TaqMan, ROX), consisting of One-Step RT Enzyme Mix and 2X One-Step Master Mix, is a convenient kit designed for highly efficient cDNA synthesis and highly specific real-time PCR in a single tube. The One-Step RT Enzyme Mix contains a thermostable ExcelRT™ Reverse Transcriptase and a RNAok™ RNase inhibitor. Consequently, One-Step RT Enzyme Mix can reverse transcribe RNA to cDNA at a wide temperature range from 42 to 60°C and active against RNase A, RNase B and RNase C. By containing specialized hot-start Taq DNA polymerase, which greatly reduce primer-dimer formation and can be activated within 2 minutes, the 2X One-Step Master Mix features high specificity and is suitable for fast cycle program. This master mix includes ROX reference dye for normalization of each RT-qPCR assay.

Features

• Reverse transcription at wide temperature range (42-60°C)
• High specificity 
• Suitable for fast cycle program
• With ROX reference dye

Storage

Aliquot to avoid multiple freeze-thaw cycles (stable within 30 freeze-thaw cycles)

Protect from light

-20°C for 12 months

The ExcelRT™ One-Step RT-qPCR kit (TaqMan, ROX) is designed for reverse transcription and quantitative real-time analysis of a specific target RNA by one-step reaction. The ExcelRT™ One-Step RT-qPCR kit (TaqMan, ROX), consisting of One-Step RT Enzyme Mix and 2X One-Step Master Mix, is a convenient kit designed for highly efficient cDNA synthesis and highly specific real-time PCR in a single tube. The One-Step RT Enzyme Mix contains a thermostable ExcelRT™ Reverse Transcriptase and a RNAok™ RNase inhibitor. Consequently, One-Step RT Enzyme Mix can reverse transcribe RNA to cDNA at a wide temperature range from 42 to 60°C and active against RNase A, RNase B and RNase C. By containing specialized hot-start Taq DNA polymerase, which greatly reduce primer-dimer formation and can be activated within 2 minutes, the 2X One-Step Master Mix features high specificity and is suitable for fast cycle program. This master mix includes ROX reference dye for normalization of each RT-qPCR assay.