HMN 2025: How Maltose-negative yeasts might unlock new flavors and quicker brewing for nonalcoholic beers

Small organisms can have a huge impact, and researchers have explored practically a dozen nontraditional yeast strains to find out which of them might brew the perfect nonalcoholic beers for a quickly rising market.

The Center for Beverage Innovation and Lafontaine Lab—together with researchers with the Dale Bumpers College of Agricultural, Food and Life Sciences on the University of Arkansas and the Arkansas Agricultural Experiment Station—evaluated 11 commercially out there yeasts to establish their strengths primarily based on chemical evaluation and sensory panel opinions.

The study is published in ACS Food Science and Technology. The experiment station is the analysis arm of the University of Arkansas System Division of Agriculture.

“These findings present brewers with actionable insights to pick out yeasts that align with desired nonalcoholic beer traits and allow them to supply style-specific, high-quality nonalcoholic beers,” mentioned Scott Lafontaine, assistant professor of meals chemistry within the meals science division, co-director of the Center for Beverage Innovation and corresponding writer of the review.

Most of the yeasts that had been examined within the study are strains which have been developed or screened to not ferment maltose, the first sugar created from malted barley within the beermaking course of.

While bodily extracting and eradicating alcohol from ordinarily fermented drinks requires expensive tools, biologically limiting alcohol from forming through the fermentation course of opens the nonalcoholic beer house to a wider group of small-scale brewers, Lafontaine famous.

Andrew Maust, a Bumpers College graduate scholar working within the Lafontaine Lab/Center for Beverage Innovation, and lead writer of the review, mentioned that whereas these “maltose-negative” yeasts nonetheless ferment less complicated sugars like glucose, fructose and generally sucrose, not fermenting maltose leads to low- or nonalcoholic beer.

“Typically, when folks consider the position of yeast in brewing, they solely consider the creation of ethanol and carbon dioxide from the consumption of sugars,” Maust mentioned. “That response happens, however the fantastic thing about yeast is that in addition they produce a variety of compounds that develop into the soul of beer.”

Classic yeast-driven flavors embrace fruity, spicy and floral notes, in addition to the flexibility to biologically remodel the remainder of the uncooked supplies within the brewing course of, Maust added.

“Over a number of hundred years, we have domesticated and advanced these organisms to behave precisely how we would like them, typically resulting in yeast alternative as a driver of regional beer flavors and types,” Maust defined.

Growing market

The timing of this study and its findings are important, Lafontaine mentioned, as nonalcoholic beer stays one of many few vivid spots within the craft beer phase amid the class’s speedy growth. In the United States, nonalcoholic beers are outlined as containing 0.5% alcohol by quantity or much less, whereas worldwide definitions sometimes vary from 0.05% to 1.2%.

Consumer demand for nonalcoholic beer has surged attributable to well being and wellness traits. According to a Statista forecast printed in 2024, nonalcoholic beer manufacturing within the U.S. has grown for 10 consecutive years and is projected to extend one other 13.5% by 2029. In Germany, nonalcoholic beer makes up roughly 5% of the beer market and is even marketed as a post-workout beverage.

Despite this momentum and though manufacturers are getting significantly better, Maust mentioned, taste stays a key hurdle.

“A typical barrier to adoption within the U.S. is the notion that nonalcoholic beers lack taste and depth in comparison with their full-strength counterparts,” Maust mentioned.

Lafontaine has been finding out nonalcoholic beer since 2019, with earlier work centered on characterizing business merchandise to know which taste chemistry and sensory attributes of present nonalcoholic beers finest matched shopper expectations. This new study marks a major evolution, Lafontaine mentioned, by shifting from analyzing completed beers to actively growing and evaluating nonalcoholic beer formulations within the lab.

The work builds on Lafontaine’s previous research, printed in 2020, elements that affect taste and American shopper choice towards nonalcoholic beer.

Targeting beer types

Up so far, Lafontaine mentioned, most beverage design work within the nonalcoholic beer class has been to develop them as “lager-like.” But the Lafontaine Lab staff needed to see what maltose-negative yeasts is perhaps appropriate to copy different full-strength business types, together with pale ale, lager and wheat beers. To match up their experimental maltose-negative beers with these business types, the researchers used sensomics, a mix of chemical and sensory analyses.

Two Berkeley Yeast strains—NA Cabana and NA Classic—shared tropical fruit and citrus-floral traits akin to pale ales.

NAY additionally aligned with pale ale profiles, with banana and melon notes that align with earlier Lafontaine Lab analysis displaying a North American choice for nonalcoholic beers with fruity esters.

Yeast strains like NA All Day from White Labs and Torulaspora delbrueckii produced cereal, wort, and dried fruit aromas related to lager types. Meanwhile, LA-01 from Fermentis scored excessive within the wheat beer class attributable to its spicy and clove-like notes.

“Characterizing these taste profiles created by nontraditional yeasts offers brewers a extra exact palette to work with as they craft distinct beer types,” Lafontaine mentioned. “It opens the door to new taste prospects and extra intentional product design.”

Fermentation pace and manufacturing insights

One of the review’s production-level takeaways was the variation in fermentation onset. Some yeasts started fermenting nearly instantly and had been completed in about 12 to 24 hours. Others took a bit longer to complete fermentation across the 48 to 72-hour mark.

“Faster fermentation may help brewers flip over tanks faster, growing throughput,” Maust mentioned. “That’s a key operational benefit.”

While full-strength beer manufacturing typically entails reusing yeast, Maust famous that this practice is discouraged in nonalcoholic beer brewing attributable to issues about undesirable maltose fermentation and spoilage organisms.

“It’s a tradeoff—you lose adaptive potential, however achieve consistency and security,” he mentioned.

A useful resource for brewers

By systematically analyzing yeast efficiency throughout alcohol content material, fermentation pace and sensory outcomes, Lafontaine mentioned the review delivers a sensible useful resource for brewers navigating the nonalcoholic beer house.

“This work bridges tutorial analysis and real-world brewing wants,” Lafontaine mentioned. “We’re offering a roadmap for brewers to pick out the perfect yeast for the fashion, taste profile and manufacturing course of they’re concentrating on.”

Food-safe NABs

Considering the shortage of alcohol to kill foodborne pathogens in nonalcoholic beer, Lafontaine and Maust might be analyzing the meals security facets of nonalcoholic beer of their subsequent experiments.

“Alcohol is a strong preservative, and with out it there are some questions on how finest to soundly course of these merchandise,” Maust mentioned. “Upcoming experiments will give attention to quantifying the anti-microbial exercise of elements and processing choices, offering additional readability on the way to design these drinks to be each secure and flavorful.”