Enzymatic and colorimetric analysis has been a standard tool in wine laboratories for decades, and it remains one of the most reliable ways to get a specific, quantitative answer on a specific analyte. Understanding what enzymatic methods actually measure, where they fit alongside other testing approaches, and what automation changes about the workflow helps a lab decide how to build its testing program around them.
What Enzymatic Wine Analysis Measures
Enzymatic methods use an enzyme-driven reaction specific to a target compound, paired with a photometric readout, to quantify that compound in a wine, must, or juice samples. Because each reaction is built around a specific substrate, the result is a direct, quantitative measurement of that analyte rather than an estimate derived from a broader spectral model.
Common analytes measured enzymatically across the winemaking cycle include glucose, fructose, and sucrose (for harvest and fermentation monitoring), L-malic acid and L-lactic acid (for tracking malolactic fermentation), acetic acid (comparable to volatile acidity), and YAN (ammonia, and primary amino nitrogen for yeast assimilable nitrogen assessment). Specificity is the core value of enzymatic testing with enzymes reacting proportionally with the analyte. A lab that needs an accurate, direct measurement for sugars and L-malic acid at a low concentration, is asking a question that a targeted enzymatic method is built to answer.
Where Enzymatic and Colorimetric Methods Fit Alongside FTIR
Many mid-size and large wineries already run FTIR instruments for rapid, multi-parameter screening across a full sample set. FTIR is a strong fit for that role: fast, broad coverage across many parameters at once, useful for triage and routine monitoring.
Enzymatic and colorimetric analysis is not a replacement for that screening layer. It serves a different, complementary purpose: confirmation and compliance testing where FTIR's calibration model reaches its limits. Low-concentration analytes, certain phenolic compounds, specific ions, sulfites, and allergen testing typically fall outside what an FTIR calibration can confirm with the precision a release decision requires.
The practical takeaway for a lab already invested in FTIR: enzymatic and colorimetric analysis fills the gap FTIR was not built to close, rather than duplicating what FTIR already does well.
The Workflow Case for Automation
Run manually, enzymatic and colorimetric methods still require careful reagent handling, precise timing between reagent addition and reading, and manual transcription of results, the same workflow burden that applies to any manual wet-chemistry method. Often this manual testing means that the technician works with one analyte at a time due to the differences in incubation times and pipetting volumes for each individual test. Automated analyzers handle reagent dispensing, incubation timing, and photometric reading as a continuous sequence, which changes two things in practice.
First, turnaround shortens. A lab that has been waiting overnight for a batch of manual results, or queuing samples for a contract lab, can get an in-house answer within one sample run, which matters most during harvest when you cannot wait to write a work order for the cellar team.
Second, results become less dependent on which technician ran the method. Because the platform standardizes timing and reagent handling, run-to-run consistency improves, which is particularly valuable for parameters with a narrow timing window or a visually read endpoint when done by hand.
Choosing the Right Automation Level
Not every lab needs the same automation footprint. A boutique winery running a handful of enzymatic and colorimetric tests through harvest has a different need than a large producer running dozens of samples a day across multiple parameters with a laboratory information system already in place. The right fit depends on current sample volume, the number of parameters run routinely, staffing, and whether results need to integrate with an existing LIS.
Admeo's SPICA platform is built within the wine industry workflow that scales with a lab's actual sample load rather than requiring a lab to overspecify equipment on day one. Reagent and consumable supply for all testing methods is available through Admeo's reagent collection, which includes ready to use calibrators and controls for each kit.
Labs evaluating whether automation fits their current workflow can learn more about the team behind the platform, including the wine-instrumentation background that shapes Admeo's method development, on the Who We Are page.
Frequently Asked Questions
What analytes can an enzymatic and colorimetric wine analyzer measure?
Common analytes sugars, organic acids, YAN (ammonia and primary amino nitrogen), metal ions, sulfites and full polyphenolic profile quantification.
Does enzymatic and colorimetric analysis replace FTIR testing?
FTIR scans a sample's infrared spectrum to predict a dozen-plus parameters (alcohol, sugars, acids, pH) in under a minute — fast and broad, but only as accurate as the matrix-specific calibration behind it- vintages, vineyards, and varieties all influence this accuracy. Enzymatic testing (Y15, SPICA-type instruments) uses direct reactions to measure one analyte at a time — slower per-parameter, but more specific and accurate. Larger volume labs often use FTIR for fast screening and enzymatic colorimetric methods as the analytical reference.
Is enzymatic and colorimetric wine analysis suitable for a small or boutique winery?
Yes. Enzymatic and colorimetric platforms are available at a range of automation levels, so a boutique winery producing many individual lots and ferments through harvest and bottling can use the same underlying method as a larger winery, given the number of cases produced or tons processed, does not always correlate with laboratory throughput.
