Immunoassay header.jpg
Immonoassay thumbnail.jpg

Immunoassay

Marketing leading Enzymes from BBI Solutions  

With a strong history of innovation and quality, BBI Solutions specialises in the extraction and purification of enzymes and related biochemicals from microbial, animal and plant tissues. We have been supplying the medical diagnostics, healthcare, and pharmaceutical industries for over 65 years.  

In this time, we have developed effective, reliable and high-quality products that are used by industry leaders across the world. With international multi-site manufacturing facilities and worldwide distribution capabilities supplying a truly global and diverse customer base, BBI Solutions is the partner of choice for your reagents. 

BBI Solutions manufacture a diverse range of consistent high-quality enzymes derived from microbial, animal and plant tissues. Our enzymes, including our market-leading glucose oxidase, alkaline phosphatase and horseradish peroxidase, are renowned for their leading levels of activity and purity with a proven performance in a variety of critical diagnostic applications.  

65 years of enzyme expertise 

Our enzymes have been used by the diagnostics industry for over 65 years, within a wide range of applications, including: 

  • Biosensors 
  • Immunoassays 
  • Clinical chemistry 
  • Pharmaceutical 
  • Molecular 
  • Research 

Core Competencies  

Large product range 

Our product range includes enzymes for biosensor, immunoassay, clinical chemistry, molecular and pharmaceutical applications with a range of different grades to suit all applications.  

Quality  

We aim to develop, manufacture and supply high quality enzymes which meet both customer and regulatory requirements.  

Stability

We use quality raw materials, innovative production methods and product formulations to achieve maximum stability for our products.  We test our products regularly to ensure this remains consistent.  

Custom manufacture  

If one of our off-the-shelf products does not meet your requirements, we can offer custom development and manufacturing services to deliver an enzyme to your specification, perfect for your application. 

BBI’s capabilities 

  • Specialists in sourcing and extraction of animal and plant products – we have extensive experience in sourcing raw materials worldwide  
  • Salt/solvent fractionation – batch sizes of up to 5,000 litres 
  • Chromatography – ion exchange chromatography, affinity chromatography, size exclusion chromatography, hydrophobic interaction chromatography  
  • Crystallisation – highly effective protein purification using solvent and aqueous media  
  • Ultrafiltration – volumes of 2,500 - 30,000 litres  
  • Freeze drying – capability of 49 - 420 litres per cycle  
  • Quality control – in-process analysis and monitoring, development of assay/test procedures  
  • Product handling/sampling – we offer special packing according to customer specifications 

Please contact our Customer Services Team directly to discuss your requirements on tel:+44 (0) 1495 363000 or alternatively you can submit an enquiry here.

 

 

Related Products

If you require any further product specific technical information or datasheets please submit your request to our technical team here 

Enzymes FAQs

Our team are here to help! If you can’t find the answer you are looking for please contact us.

The material is manufactured in our ISO 13485:2016 compliant facility in Crumlin, South Wales, UK. Horseradish peroxidase and Ribonuclease are made at the ISO13485:2016 complaint facilities in Crumlin, South Wales, UK and Cape Town, South AfricaWhat to do if my product passes its best before date?

Some products can have their best before date extended beyond that stated on the ADS which arrives with the product. Contact technicalsupport@bbisolutions.com to check if the date can be extended.

• Biosensors
• Immunoassays
• Clinical chemistry
• Molecular diagnostics

BBI Solutions’ Alkaline Phosphatase (ALP) is extracted from bovine intestine then purified using multiple precipitation, fractionation, chromatography and filtration steps.

ALP is commonly used as a label in immunoassays such as ELISA, and in blotting and histochemistry. Once conjugated to antibodies, antigens, or streptavidin, its low backgrounds and linear reaction rate enables increased sensitivity over extended incubation times. It can be used with a variety of substrates producing precipitated or soluble chromogens, or with chemiluminescent and fluorogenic substrates for enhanced sensitivity.

Our high activity conjugation grade products are supplied as glycerol solutions.

We recommend you store the material between 2 - 8°C. This product is shipped at ambient temperature.

BBI grade ALPI12G, which has the highest specific activity currently available.

• Guaranteed quality: ALP is manufactured under our Quality System compliant with ISO 13485:2015, with stringent QC analysis for every batch.
• Highest activity ALP on the market: >2000 glycine U/mg protein and >6000 DEA U/mg protein, for some batches we achieve >2300 and >7000.
• High stability: Less than 10% activity lost over 48 months.
• Proven performance: We have benchmark data demonstrating proven performance against the competition.
• Multiple grades: We offer various ALP products with defined activities, enabling you to select an enzyme which best suits your application.
• Bulk extraction and purification capability: Our optimised large-scale manufacturing processes produce high volumes of all grades.

We typically pack to order and can supply any quantity from 10ku to >10,000ku.

BBI’s Glucose Oxidase is produced from large-scale fermentation of the fungus Aspergillus niger. The crude fermentation liquor is purified using multiple precipitation, fractionation, chromatography, and filtration steps.

Glucose Oxidase is used in liquid and powder glucose laboratory reagents, urine test strips, colorimetric blood glucose strips and for blood glucose monitoring in biosensors.

Our final products are lyophilised powders.

We recommend you store the material desiccated at -15°C or below. This product is shipped at ambient temperature

• Guaranteed quality: Glucose Oxidase is manufactured under our Quality System compliant with ISO 13485:2015, with stringent QC analysis for every batch.
• Greater accuracy: Highest levels of activity and purity to increase speed and accuracy
• Choice and flexibility: Multiple grades and custom preparations available for specific applications to optimise your assay at reduced cost
• Proven performance: Enabling strip manufacturers to comply with the latest accuracy guidelines (+/- 15%)
• Batch to batch reproducibility and consistency: Optimised and controlled
manufacturing procedures to ensure reproducibility and consistency – essential in high
volume strips
• High manufacturing capacity: BBI has bulk manufacturing capabilities

We typically pack to order and can supply any quantity from mg to kg depending on the grade required.

BBI’s Ribonuclease is extracted from bovine pancreas using multiple precipitation, fractionation, chromatography and filtration steps.

Ribonuclease can be used in the following applications:
• In isolation of DNA for RNA-free DNA, especially plasmid DNA• Structural studies of RNA
• The depolymerisation of viscous biological suspensions, rendering RNA-free solutions

Our final products are lyophilised powders.

We recommend you store the material desiccated at -15°C. This product is shipped at ambient temperature.

Guaranteed quality: RNase is manufactured under our Quality System compliant with ISO 13485:2015, with stringent QC analysis for every batch.
• Proven performance: In DNA extraction kits
• Batch-to-batch reproducibility: Enabling consistent formulations
• Bulk extraction and purification capability: Our optimised large-scale manufacturing processes produce high volumes of purified RNase
• Secure supply: We have direct relationships with our raw material suppliers to ensure a secure supply chain

We typically pack to order and can supply any quantity from g to kg.

BBI’s urease is obtained from specially selected and cultivated jack beans. The enzyme is extracted from the beans then purified using multiple precipitation, fractionation, chromatography and filtration steps.

Urease is used in liquid and powder urea laboratory reagents, and biosensors. It can be used in the determination of urea in biological fluids (couple with GLDH, in the ultraviolet method). Urease can also be used as an enzymes label in ELISA.

Our final products are lyophilised powders.

We recommend you store the material desiccated at -15°C or below. This product is shipped at ambient temperature.

• Guaranteed quality: Urease is manufactured under our Quality System compliant with ISO 13485:2015, with stringent QC analysis for every batch.• Proven performance: In liquid and powder reagents
• High purity: For biosensor applications
• Bulk capability: Manufacturing in high volumes to reduce cost
• Batch-to-batch reproducibility: Enabling consistent formulations
• Secure supply: We have direct relationships with our raw material suppliers to ensure a secure supply chain

We typically pack to order and can supply any quantity from 1MU to >1,000MU

Enzymes for Immunoassay 

At BBI Solutions, we aim to provide you with all of the biological raw materials that you need to develop and manufacture ELISA assays and other immunoassay based diagnostic tests. Most immunoassays involve linking a detectable label such as an enzyme to an antibody or antigen, which produces an observable colour change in the presence of certain reagents. 

The properties of enzymes as reaction catalysts, i.e. speed and specificity, make them excellent tools for assay end detection when combined with suitable substrates. Use of enzyme labels allow assay optimisation through sensitivity, convenience and speed of reactivity, and have facilitated the development of several widely used test formats for the same analyte. 

Horseradish Peroxidase (HRP) and Alkaline Phosphatase (ALP) are the most commonly used as enzyme labels to provide signal amplification in the majority of the immunoassays made and used today. 

Key properties for Enzymes used in Immunoassay 

High activity and purity 

A high enzyme activity ensures that the sensitivity of the assay is limited by the characteristics of the antigen to antibody binding rather than the ability of the enzyme to determine immune reactivity.  

Specific activity 

Enzymes used for detection should have a substrate specificity different to that of any enzymes present in test samples, thereby not producing a detectable signal with any components of those samples e.g. serum.

Easily conjugated 

For ease of manufacture, enzymes should have the potential to be linked to a range of proteins and other analytes by relatively simple and established methods that do not interfere with the enzyme reactivity. 

Stable 

When storing, the purified enzyme and enzyme conjugates should be stable in a wide range of formulations; room temperature stability being a distinct advantage for many applications. 

Readily available & inexpensive 

Commercial preparations must be consistently available at high purity and specific activity, and at prices not contributing significantly to the final cost of the test. 

Key Enzyme Labels 

Horseradish Peroxidase 

Horseradish peroxidase (HRP) is one of the most commonly used enzyme labels in immunoassays. 

The purity of the HRP preparation can be indicated by determination of the Reinheitszahl ratio (Rz) and preparations suitable for use in labelling should have an Rz of 3.0 or greater. 

There are many HRP Isozymes, and it is generally accepted that Isozyme C has the highest specific activity, and this can account for up to 40% of the peroxidase content of horseradish. However, several of the isozymes with “neutral” isoelectric points have specific activities perfectly adequate for use as labels in high sensitivity immunoassays so it is not necessary to use the highest purity, and therefore most expensive, Isozyme C preparation. 

In some assays, even when using highly purified HRP, it is possible to get background signal. In such cases an improvement to the “signal/noise” ratio can be obtained by inclusion of purified but inactive Apo HRP. 

Why Use BBI Horseradish Peroxidase? 

  • Controlled and consistent supply – BBI have close and longstanding relationships with horseradish growers to ensure year-round supply 
  • High Isozyme C content – our HRP contains >90% isozyme C which provides exceptional purity so you can have confidence in your results 
  • High activity levels – we achieve between 250-300U/mg, providing consistent and reliable performance 
  • Highly available amino groups – this allows for clean conjugation 
  • Bulk extraction and purification capabilities – large batch sizes allow us to fulfil multiple orders from a single batch reducing validation costs 

Alkaline Phosphatase 

ALP is the other enzyme of choice for the majority of antibody conjugations. It is often used as an alternative to HRP when a more linear reaction rate is required over a wide range of values. The source of ALP with the highest specific activity, and therefore of most use in assays, is calf intestine. 

BBI’s ALPI12G is our highest specific activity product and bestselling line. Its performance has been proven in assays manufactured by some of the largest immunoassay and IVD companies. 

Why Use BBI Alkaline Phosphatase? 

  • Highest activity on the market – we achieve up to 2300 glycine U/mg protein and 7000 DEA U/mg so you can be confident in the performance of your assay 
  • High stability – our product experiences <10% activity lost over 48 months ensuring reliable and consistent performance of your assay 
  • Multiple grades of product – BBI offer ALP in a range of specific activities, including blocking grades, which allows you to pick the best product for your specific application 
  • Bulk extraction and purification capabilities – large batch sizes allow us to fulfil multiple orders from a single batch reducing validation costs 

Enzymes Documents

If you require any further product specific technical information or datasheets please submit your request to our technical team here 

Last updated: 26/03/2021

Enzymes Brochure

Last updated: 26/03/2021

Products and Services Brochure

Last updated: 01/02/2021

Horseradish Peroxide

Last updated: 01/02/2021

Alkaline Phosphotase

Last updated: 26/03/2021

Enzymes Brochure

Last updated: 26/03/2021

Products and Services Brochure

There are currently no documents in this category.
Last updated: 01/02/2021

Horseradish Peroxide

Last updated: 01/02/2021

Alkaline Phosphotase

There are currently no documents in this category.
There are currently no documents in this category.
There are currently no documents in this category.
There are currently no documents in this category.
There are currently no documents in this category.
There are currently no documents in this category.

Request a callback

If you have any questions or wish to discuss your requirements please submit an enquiry using the form below. Our dedicated customer services team will respond directly.

 

BBI Solutions Brands

diarect.png

The acquisition of DIARECT in June 2020 and their world leading recombinant autoimmune antigen capability immediately enhances BBI’s portfolio and position as a ‘complete’ immunoassay reagent supplier. This further enhances BBI’s position as the world’s largest diagnostics components company with a market leading antigen portfolio.

mbs.png

Maine Biotechnology Services brings 27 years of knowledge, experience, process development, and project management to our customers to ensure the best possible antibodies for any application. As antibody development goals in the biotechnology and pharmaceutical industry have evolved the acquisition of MBS will help BBI further meet and exceed our customers needs.

Newsletter

Signup for our newsletter to receive the latest BBI Solutions updates and special offers in your inbox