Sourdough process development

Enzymes in Sourdough: Fermentation, Dough Handling and Shelf Life

Evaluate sourdough enzyme blends against fermentation time, acidity, dough handling and crumb firming using matched starter and flour conditions.

Prepared by Scientific & Technical Updated 23 September 2026
Enzymes in Sourdough: Fermentation, Dough Handling and Shelf Life

Choose the right enzyme

FeedstockProcessing targetEnzyme to investigateWhat to measure
Long-fermented doughMaintain a workable processSourdough enzyme blendHandling and proof tolerance
Pale or variable crustAssess sugar-related effectsControlled bake comparisonColour at equal baking
Firming crumbEvaluate textural storageMatched packaged loavesTexture and moisture over time

These comparisons identify useful development endpoints; they are not universal dose or operating-condition recommendations.

Plan the process

  1. 1

    Fix the fermentation

    Prepare matched sourdoughs from the same starter and flour with a recorded fermentation schedule.

  2. 2

    Compare additions

    Compare no blend with the current product-supported addition using an accurately distributed premix.

  3. 3

    Track dough handling

    Record pH, handling and proof behaviour, then bake using the intended production endpoint.

  4. 4

    Assess stored crumb

    Compare cooled and stored crumb under identical packaging and repeat on another bake day.

Sourdough enzyme performance must be assessed over the actual fermentation schedule. Acidity, flour variation and long resting periods can change both enzyme exposure and dough behaviour, so a short straight-dough test is not a substitute.

Control the starter and fermentation history

Use the same starter maturity, inoculation, flour, hydration and salt for the first comparison. Record temperature, elapsed time and pH at useful stages. If the treated dough reaches the chosen proof endpoint sooner, distinguish that observation from a bake made at the same fixed time. Both comparisons can be useful, but they answer different questions.

Add a defined formulation accurately

Baker’s Sour Dough Enzymes lists maltogenic amylase, alpha-amylase, xylanase and glucose oxidase. The current instruction is 0.55 g per 10 kg flour, equivalent to 55 mg/kg. This small mass needs accurate weighing and distribution. It is the dose of the supplied blend, not a recipe for combining pure enzymes at that amount.

Follow texture through the intended storage

Assess shaping, proof tolerance, loaf spread, volume, crust colour and crumb after consistent cooling. For a softness target, package matched loaves identically and compare texture over the planned storage period. Record moisture changes. A soft crumb does not establish resistance to microbial spoilage, and a successful blend should not be used to justify an untested shelf-life extension.

Troubleshooting

  • Dough becomes slack late in fermentation: assess the complete time and pH exposure.
  • Storage results vary: check cooling, packaging and loaf moisture before changing enzyme dose.

Common questions

Can I use a straight-dough dose unchanged?

Use the sourdough product specification and validate it over your longer, more acidic process.

Should starter acidity be ignored if the flour is the same?

No. Starter maturity and acidity are important sources of variation.

Evidence and scope

These are proposed development comparisons, not validated production recipes or guaranteed performance results. Use current grade-specific technical data for the starting dose and operating conditions. Record the enzyme lot and assay definition, and confirm performance in the finished process before scale-up.

Amylase, Xylanase and Cellulase in Baking: Different Jobs in Dough

Choosing Bread Improver Enzymes: Blend or Individual Components?

How to Design an Enzyme Screening Trial That Gives Useful Results

Process development and supply

Share your feedstock, batch size, temperature and pH profile, treatment time and target specification with Scientific & Technical. Select a relevant product below to see current pack sizes, price and availability, and buy online. For blends and kits, confirm the component selection and conditions against your intended application.

Follow each preparation’s technical and safety data sheets, including storage and handling instructions. Avoid generating enzyme dust or aerosols.

Recommended products

Choose the products that match your process. Each card explains its role in this application; you do not need every enzyme in one recipe.

Benefits are application targets; confirm dosage and performance in your finished formulation.

References and supporting evidence

Research and manufacturer examples support the application rationale; they do not establish identical performance for every commercial preparation.

  1. Scientific & Technical — Baker's Sour Dough Enzymes

    Current product information; confirm the technical sheet, intended-use documentation and lot specification for the supplied preparation.