NEMC 2015 Enzymes for Analytical Chemistrynemc.us/docs/2015/presentations/Thu-Collaborative Efforts...
Transcript of NEMC 2015 Enzymes for Analytical Chemistrynemc.us/docs/2015/presentations/Thu-Collaborative Efforts...
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Enzymes for Analytical Chemistry Ellen R. Campbell Vice President & CEO
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We’re Evolving
The Nitrate Elimination Company, Inc
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Collaborative Efforts to Improve Environmental Monitoring
Method Validation Across Disciplines: Biotechnology for Green Analytical Chemistry
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NECi Superior Enzymes � Since 1993, NECi has been pioneering
green chemistry by implementing enzymes as “chemical” reagents
� Our claim to fame is Nitrate Reductase � We’re now delving into other enzymes � Current research is building upon years of
recombinant protein expression and stringent quality control
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Enzymes
From HE laundry detergent… to nutraceuticals… to analytical chemistry reagents?
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It’s a new generation
Back Then
� Parts per billion was an achievement
� Toxicity was part of the chemistry game
� Enzymes? Those are for animals…
Now
� Single molecule detection limits
� Lab safety is the name of the game
� Enzymes? Those are for analytical chemists!
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Enzymes for Analytical Chemistry
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Specificity – False negatives and positives are rare
Selectivity – Finds target analyte in complex mixtures
Sensitivity – Low detection limits in a variety of samples
Safety – Handling and disposal is benign
Stability – Ability to ship and store ambient
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Nitrate Reductase
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Production
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All of NECi’s enzymes are manufactured in a yeast called Pichia pastoris. A single 19 liter fermentation can yield anywhere from 1,000 to over 3,000 units of enzyme.
Recombinant Enzymes:
� Increased lot-to-lot reproducibility
� Increased production capacity
� Reasonable production costs
� Improved Stability � Efficient production � Tight quality control
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Many Formats Same Results From the high-throughput laboratory to the field, analytical grade enzymes deliver equivalent results to chemists and novice users.
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0.01 0.10 1.00 5.00 0.01
0.10
1.00
5.00
Line of equal correlation
N
itra
te +
Nitr
ite C
onc
ent
ratio
n in
mg
-N/L
(N
aR)
Nitrate + Nitrite Concentration in mg-N/L (CdR)
Cadmium vs. Nitrate Reductase
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New Method Validation � Change is hard, displacing tried-and-true
proves more difficult than adopting completely new technologies.
� Enzymes were previously thought of as only being useful in biomedical or clinical laboratories.
� Advantages of enzymes in analytical chemistry applications are finally gaining attention from the laboratory community.
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Now What?
Enzymes for quantifying glycerol in biodiesel, galactose in complex mixtures, alcohol for on-site gas and beverage testing, phosphate levels in the fields, and a handheld spectrophotometer to analyze it all.
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Thank You