Beta Amylase for Whisky and Spirits Distilling
Exo-acting beta amylase produces fermentable maltose from mash in whisky and grain spirit production — improving saccharification completeness, wash fermentability, and distillate yield.
Distilling efficiency depends on the completeness of starch saccharification in the mash: every gram of starch not converted to fermentable sugar is a gram of potential alcohol that ends the fermentation cycle in the spent wash rather than the spirit receiver. Maltose is the primary fermentable sugar produced during saccharification in whisky and grain spirit production, and beta amylase is the enzyme responsible for its generation. In malt whisky production, barley malt provides substantial endogenous beta amylase; in grain whisky production with wheat, corn, or unmalted barley as the majority grain, exogenous enzyme supplementation is essential for complete starch conversion.
Our beta amylase for whisky distilling is derived from barley or soybean sources at 50,000–150,000 U/g, active at pH 4.5–6.5 and 45–65°C — conditions that match both the saccharification rest temperature in Scotch malt whisky mashing (63–65°C) and the conversion step in continuous cooker grain distilling systems (55–62°C). The enzyme releases maltose from the non-reducing chain ends of gelatinised and dextrinised starch, building a high-maltose wash that distiller's yeast ferments efficiently to ethanol and CO₂.
For grain whisky and neutral spirit production from wheat or corn, where little or no malt is used, exogenous beta amylase at 1.0–3.0 kg/t grain grist supplements or replaces malt enzyme. In combination with exogenous alpha amylase (for liquefaction and initial fragmentation), a full enzyme package achieves wash fermentabilities of 75–85% apparent attenuation, equivalent to well-saccharified malt mashes. This is critical for continuous grain distilleries where wash consistency determines distillation column performance and spirit yield per tonne of grain.
For distillery procurement teams, beta amylase for spirits is evaluated on declared activity, temperature stability across the saccharification hold, compatibility with alpha amylase and glucoamylase in combined enzyme dosing, and food-grade documentation for potable spirits production. COA, TDS, HALAL, and KOSHER documents are available per lot. MOQ 25 kg.
Malt Whisky Mashing Enzyme Supplementation
In Scotch single malt production, traditional infusion mashing at 63–65°C for 60–90 minutes relies on malt endogenous enzymes. If malt lot enzyme activity is variable or diastatic power is below specification (typically <200 °Lintner is a risk threshold), exogenous beta amylase at 200–500 g/t grist is added at mash-in to ensure consistent wash fermentability. This prevents under-saccharification that produces high-gravity wash with residual starch — a problem that can cause fermentation stalls and reduce spirit yield per tonne of malt.
Grain Whisky and Continuous Distilling
Grain distilleries using continuous cooker and fermentation systems process 80–95% unmalted grain (wheat or corn) with 5–20% malt as the enzyme source. When production volume increases or malt prices spike, increasing the unmalted grain proportion becomes economically attractive — but dilutes enzyme activity per tonne. Exogenous beta amylase at 1.0–2.0 kg/t grain grist, combined with alpha amylase, maintains wash fermentability at target levels (75–82% apparent attenuation) regardless of malt percentage in the grist, enabling grain ratio optimisation without yield sacrifice.
American Whiskey and Bourbon Mash Bills
Bourbon and American whiskey production from corn-heavy mash bills (51–90% corn, plus malted barley and rye) relies on barley malt enzymes for starch conversion. In industrial bourbon production where distillery scale requires consistent mash performance, exogenous beta amylase at 300–800 g/t grist ensures that variability in malt lot enzyme activity does not translate into variability in wash fermentability. This is particularly important in winter production when lower mash temperatures can reduce endogenous enzyme activity below the target conversion level.
Rum and Neutral Spirit from Molasses-Starch Blends
Some rum and neutral spirit facilities use starch-based feedstocks (cassava, corn) blended with cane molasses. The starch fraction requires enzymatic liquefaction and saccharification before fermentation. Beta amylase at 0.8–2.0 kg/t starch, combined with alpha amylase for liquefaction and glucoamylase if high glucose is needed, enables complete conversion of the starch fraction alongside the fermentable sugars contributed by the molasses. This blended substrate approach improves raw material flexibility and total fermentable yield per batch.
| Parameter | Value |
| Activity range | 50,000 – 150,000 U/g (multiple grades) |
| Optimal pH | 4.5 – 6.5 (distilling mash range) |
| Optimal temperature | 45°C – 65°C |
| Form | White to light yellow powder |
| Shelf life | 12 months (sealed, cool, dry place) |
| Packaging | 25 kg fiber drums |
Frequently Asked Questions
How much beta amylase should I add for grain whisky production?
For grain whisky and continuous distilling with 80–95% unmalted grain, exogenous beta amylase at 1.0–2.0 kg per tonne of total grain grist is the typical range, combined with alpha amylase for liquefaction. For malt whisky supplementation where malt provides baseline enzyme activity but is below specification, 200–500 g/t grist is usually sufficient. American bourbon and rye whiskey production from partial malt bills typically requires 300–800 g/t. Confirm dosage through wash fermentability measurement (apparent attenuation limit) against a control mash before committing to plant-scale enzyme rates.
Does beta amylase affect whisky flavour or spirit character?
Beta amylase is a protein that is denatured during fermentation and distillation and does not carry through into the distillate. Its only effect on spirit character is indirect: by improving saccharification completeness, it ensures higher wash fermentability and more consistent fermentation performance, which produces cleaner, more consistent spirit. Under-saccharification (too little enzyme) can cause inconsistent fermentation, yeast stress, and off-flavour production. Exogenous beta amylase, used at the correct dosage, does not introduce any detectable flavour or quality difference compared to well-saccharified malt-enzyme-only mashes.
Can beta amylase be combined with glucoamylase in distilling?
Yes. Beta amylase and glucoamylase have complementary and additive effects on starch saccharification. Beta amylase produces maltose from starch chain ends; glucoamylase (EC 3.2.1.3) releases glucose from the same ends and can also bypass α-1,6 branch points. In combination, they produce a higher-fermentability wort with more complete conversion of both linear and branched starch. This combination is common in grain spirit production seeking maximum spirit yield per tonne of grain. The two enzymes are compatible in the mash and can be dosed simultaneously at mash conversion temperature.
What food-grade documentation is available for distilling use?
Our beta amylase for whisky and spirits production is supplied with food-grade documentation appropriate for potable spirit manufacture, including COA (activity, moisture, microbial limits), TDS (dosage, conditions, storage), HALAL certificate, and KOSHER certificate for qualifying orders. For distilleries under BRC, FSSC 22000, or SWA (Scotch Whisky Association) raw material approval programmes, our ISO 9001 documentation and allergen statements are available. Pre-shipment samples for in-house QC verification can be arranged on request.
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