Advances in Extraction Technologies and Biomedical Functions of Natural Sugar Substitutes

If you formulate reduced-sugar products, you probably track three ingredients: allulose, fructo-oligosaccharides, and erythritol. This review covers all three. It also shows where commercial production is heading.
The paper, published in Frontiers in Nutrition (DOI: 10.3389/fnut.2022.952147), pulls together recent work on natural sweetener extraction and biomedical function. For ingredient buyers, the useful news is practical. Production methods are shifting.

Background

Allulose is a six-carbon rare ketohexose. It is almost zero-calorie. It is the C-3 epimer of D-fructose, which means the two sugars differ at one carbon position. That small difference changes how the body handles it. The review calls allulose an ideal natural sugar substitute. That claim matters because formulators need taste and texture without the metabolic load.

The paper’s scope is broader than allulose. It also examines FOS from yacon and erythritol from fermentation. Different sweeteners, different supply chains. But the production questions are similar: how do you get a clean, concentrated, high-purity ingredient at scale?

What the study did

This is a review, not a new lab experiment. The researchers surveyed extraction technologies and biomedical functions for natural sugar substitutes. They looked closely at three routes:

• Bioconversion for allulose
• Membrane filtration for FOS
• Fermentation for erythritol

For FOS, the scientists used membrane technology to concentrate and purify fructo-oligosaccharides from yacon. They tested ultrafiltration, nanofiltration, and diafiltration. The standout result: ultrafiltration combined with nanofiltration is a highly promising extraction approach. That matters for manufacturers because yacon is a natural, plant-based source. Membrane processing avoids heavy chemical cleanup.

For erythritol, the paper highlights a novel yeast strain: Clavispora lusitaniae JARR-1. Using this yeast for fermentation can produce high-purity natural sugar substitutes and improve production efficiency. That’s a direct lead for anyone sourcing erythritol. The strain matters because fermentation efficiency affects cost, capacity, and final purity.

Key findings

The findings below come directly from the review. Use them when evaluating suppliers.

Sweetener	Production route	Key finding
Allulose	Bioconversion	C-3 epimer of D-fructose; almost zero-calorie; ideal natural sugar substitute. Biotransformation is becoming the main production strategy.
FOS	Membrane filtration from yacon	Ultrafiltration plus nanofiltration, with diafiltration, is a promising way to concentrate and purify FOS.
Erythritol	Fermentation	Novel yeast Clavispora lusitaniae JARR-1 enables fermentation to produce high-purity NSS and improve efficiency.

The allulose point deserves emphasis. Production is moving toward biological conversion, not extraction from natural sources. That shift matters because enzymatic conversion from fructose can scale more predictably than harvesting and purifying rare plant compounds.

For FOS, the membrane findings give buyers a technical checklist. Ask suppliers about their filtration trains. Do they use diafiltration? Do they combine UF and NF? Those details affect the final oligosaccharide profile and yield.

For erythritol, watch the yeast strain. JARR-1 is a specific example of how strain selection drives efficiency. A better fermenting organism means lower production costs and more consistent supply.

What this means for food manufacturers

You don’t need to re-engineer your formulas overnight. But you should sharpen your sourcing questions.

For allulose, ask whether your supplier uses bioconversion. If yes, what’s the feedstock? How much purification follows the enzymatic step? Almost-zero-calorie claims depend on final purity.

For FOS, the yacon route is real. Membrane-based concentration gives a clean label story. Yacon is a root crop. FOS from yacon can be positioned as minimally processed if the supplier uses physical separation methods like ultrafiltration and nanofiltration. That is a strong buyer talking point.

For erythritol, fermentation is the established path. The JARR-1 strain shows that yeast selection is still improving. If a supplier uses a novel, high-efficiency strain, they may offer better price stability. That’s worth asking about in your next procurement call.

These are not interchangeable ingredients. Allulose delivers bulk and browning. FOS provides fiber-like prebiotic benefits. Erythritol offers crystalline sweetness with low calories. Each has a different production bottleneck. The review makes that clear.

Frequently asked questions

Is allulose truly zero-calorie?
The review describes it as almost zero-calorie. It is a rare six-carbon ketohexose and a C-3 epimer of D-fructose, and the paper positions it as an ideal natural sugar substitute.

How is FOS extracted from yacon?
Researchers concentrated and purified FOS using membrane technologies. The most promising combination was ultrafiltration with nanofiltration, plus diafiltration.

Can erythritol be produced by fermentation?
Yes. The review highlights a novel yeast, Clavispora lusitaniae JARR-1, that supports efficient fermentation and yields high-purity natural sugar substitutes.

A practical view

Natural sweeteners are not a single category. Allulose, FOS, and erythritol each have a distinct production identity. The winners in this space will be suppliers who combine good biology with clean separation. For buyers, that means one question matters most: how is this ingredient actually made? The answer will tell you more than any nutrition label.