Researchers have developed a new type of thick liquid food that could help elderly people with swallowing difficulties while also slowing sugar absorption into the bloodstream. According to Gram Research analysis, this multiphase Pickering emulsion reduced the predicted glycemic index by 42.78% while increasing thickness by 195.8% compared to standard thickened foods. The formula uses tiny particles made from whey protein and modified starch to create a customizable product that addresses two common health problems simultaneously, though human testing is still needed before it can be used clinically.
Scientists created a special liquid food designed specifically for elderly people who have trouble swallowing and managing their blood sugar. According to Gram Research analysis, this new food uses tiny particles to create a thicker liquid that’s easier to swallow while also slowing down how quickly the body absorbs sugar. The researchers mixed different ingredients including whey protein and starch to make a food that can be customized for different people’s needs. Testing showed the new formula reduced how quickly sugar enters the bloodstream by 43% compared to regular thickened foods, making it potentially helpful for people with diabetes or pre-diabetes.
Key Statistics
A 2026 laboratory study published in Food Research International found that a multiphase Pickering emulsion reduced the predicted glycemic index by 42.78% (from 91.57 to 52.40) while increasing viscosity by 195.8% compared to standard yam starch and guar gum thickened foods.
Researchers optimized whey protein and oxidized starch nanoparticles to 373.53 nanometers in size with a contact angle of 90.84°, which reduced whey protein hydrolysis by 18.80% and slowed starch digestibility in laboratory testing.
The study demonstrated that adjusting oil droplet size from 1.76 to 5.48 micrometers in the Pickering emulsion allowed independent control of both rheological properties and digestibility for personalized nutrition applications.
The optimized formula reduced the predicted glycemic index by 33.49% and decreased protein breakdown by 18.80% compared to the base emulsion alone, suggesting sustained nutrient absorption over time.
The Quick Take
- What they studied: Can scientists create a special thick liquid food that’s easier for elderly people to swallow AND helps control blood sugar levels at the same time?
- Who participated: This was a laboratory study testing different food formulas rather than a study with human participants. Researchers tested various combinations of ingredients to find the best recipe.
- Key finding: The new multiphase Pickering emulsion reduced the predicted glycemic index (how fast sugar enters the bloodstream) by 42.78% compared to standard thickened foods, while increasing thickness by 195.8%.
- What it means for you: If approved for use, this could provide elderly people with a single food product that solves two problems at once: making swallowing safer and helping manage blood sugar. However, human testing is still needed before it becomes available.
The Research Details
Researchers created a new type of food using advanced food science techniques. They started by making tiny particles from whey protein (a milk ingredient) and modified starch, then mixed these particles into oil droplets suspended in water. This created what scientists call a ‘Pickering emulsion.’ They then added this mixture to a thicker base made from yam starch and guar gum (a natural thickener) to create a multi-layered system. The researchers tested different combinations of ingredients and amounts to find the formula that worked best for both thickness and blood sugar control.
The study involved careful laboratory testing of the food’s physical properties (how thick it is, how it flows) and its digestibility (how quickly the body breaks it down and absorbs nutrients). Researchers measured particle sizes using specialized equipment and predicted how quickly sugar would enter the bloodstream using established scientific methods. They tested multiple variations to understand which ingredients and amounts produced the best results.
This type of research is called ‘in vitro’ testing, meaning it happens in a laboratory using chemical and physical tests rather than testing with actual people. The researchers used computer models and chemical analysis to predict how the food would behave in the human body.
This research approach is important because it allows scientists to design food products for specific medical needs before testing them in people. For elderly individuals with dysphagia (difficulty swallowing), the food must be thick enough to prevent choking but not so thick it’s unpleasant to eat. For people with diabetes, the food should slow sugar absorption. Creating one product that does both is challenging, so laboratory testing helps researchers find the right combination of ingredients and amounts before moving to human trials.
This is a well-designed laboratory study published in a peer-reviewed scientific journal, which means other experts reviewed the work before publication. The researchers used precise measurements and multiple testing methods to verify their results. However, this is laboratory research only—it hasn’t been tested in actual people yet. The study doesn’t include information about how the food would taste, whether people would actually eat it, or how it would work in real digestive systems. These questions would need to be answered in future human studies before this product could be recommended for use.
What the Results Show
The optimized formula created particles measuring 373.53 nanometers (extremely tiny—about 1/100,000th the width of a human hair) with specific surface properties that helped them stick to oil droplets. When researchers added this formula to the thicker base, the resulting food became 195.8% thicker than the base alone, increasing from 205.71 to 608.65 millipascal-seconds (a measure of thickness). This increased thickness would make the food safer for people with swallowing difficulties.
The new formula also significantly reduced how quickly sugar would enter the bloodstream. The predicted glycemic index dropped by 42.78%, falling from 91.57 to 52.40. This means the body would absorb sugar much more slowly from this food compared to regular thickened foods. Additionally, the formula reduced how quickly the whey protein would be broken down by digestive enzymes by 18.80%, suggesting the food would provide sustained nutrition over a longer period.
The researchers found that by adjusting the size of oil droplets (ranging from 1.76 to 5.48 micrometers) and the amount of the oil-in-water emulsion added, they could fine-tune both the thickness and the digestibility. Larger droplets and more emulsion generally produced thicker, more viscous products with slower sugar absorption.
The study showed that the tiny nanoparticles made from whey protein and oxidized starch worked effectively as stabilizers, keeping the oil and water from separating. The addition of EGCG (a compound from green tea) at small amounts (0.2 parts per 100) helped improve the stability and function of these particles. The research demonstrated that this hierarchical (multi-layered) approach allowed independent control of different properties—researchers could adjust thickness separately from sugar absorption rate by changing different components.
Previous research has shown that thickening foods helps people with swallowing difficulties, and that certain ingredients can slow sugar absorption. However, most existing products do one or the other, not both. This research builds on earlier work showing that Pickering emulsions (foods stabilized by tiny particles rather than traditional emulsifiers) can be customized for medical purposes. The significant improvements shown here—a 43% reduction in predicted glycemic index combined with nearly 200% increase in thickness—represent a substantial advance over previous approaches that typically addressed only one problem.
This study tested the food formula in a laboratory using chemical and physical tests, not in actual human bodies. The predicted glycemic index is an estimate based on how quickly enzymes break down starch in controlled conditions; actual blood sugar response in people might differ. The study doesn’t address important practical questions like taste, smell, appearance, or whether elderly people would actually want to eat this food. There’s no information about cost, shelf stability, or how long the product would last if stored. The study also doesn’t test whether the food works well with medications or other foods elderly people typically eat. Finally, the sample size of 0 indicates this is purely a formula development study without human participants, so results cannot yet be applied to real people.
The Bottom Line
Based on this laboratory research, the formula shows promise for future development into a commercial product for elderly people with swallowing difficulties and blood sugar management needs. However, confidence in these recommendations is currently LOW because human testing hasn’t been done yet. Before anyone should use this product, researchers need to: (1) test it in actual people to confirm it works as predicted, (2) verify it’s safe and doesn’t cause side effects, (3) confirm it tastes acceptable, and (4) ensure it works well with medications and other foods. Once human studies are complete and regulatory approval is obtained, this could become a valuable tool for elderly care.
This research is most relevant to: elderly people with dysphagia (difficulty swallowing), people with type 2 diabetes or prediabetes who need thickened foods, healthcare providers caring for elderly patients, food scientists developing medical foods, and companies that make nutritional products. People without swallowing difficulties or blood sugar concerns don’t need this product. This research should NOT be used to make any changes to current medical care until human studies are completed.
This is very early-stage research. If development continues successfully, it would typically take 3-5 years of additional research (human safety studies, effectiveness testing, regulatory approval) before this product could become available to consumers. Any benefits would likely be noticeable within days to weeks of regular use if the product works as predicted, but this remains theoretical until human testing is completed.
Frequently Asked Questions
What is a Pickering emulsion and why is it used in this food?
A Pickering emulsion is a mixture of oil and water stabilized by tiny solid particles instead of traditional emulsifiers. In this study, whey protein and starch particles keep oil droplets suspended in water, creating a food that can be customized for swallowing difficulty and blood sugar control by adjusting particle size and amounts.
How much does this new food reduce blood sugar spikes compared to regular thickened foods?
The laboratory testing showed a 42.78% reduction in predicted glycemic index compared to standard yam starch and guar gum thickened foods, meaning the body would absorb sugar significantly more slowly. However, this is a laboratory prediction; actual results in people may differ.
Is this food product available for elderly people to buy right now?
No, this is laboratory research only. The formula hasn’t been tested in actual people yet. Before it can be sold or recommended, researchers must complete human safety and effectiveness studies and obtain regulatory approval, which typically takes several years.
Who would benefit most from this type of specialized liquid food?
Elderly people with dysphagia (difficulty swallowing) and blood sugar management issues like diabetes or prediabetes would benefit most. The product addresses both problems simultaneously, which is rare in current thickened food options.
What makes this food safer to swallow than regular thickened foods?
The multiphase formula increased thickness by 195.8%, making it more cohesive and less likely to separate or cause choking. The tiny nanoparticles create a more stable, uniform texture that flows predictably in the mouth and throat.
Want to Apply This Research?
- Once this product becomes available, users could track: (1) ease of swallowing on a 1-10 scale, (2) blood sugar readings before and 2 hours after consuming the product, (3) how long they feel full after eating, and (4) any digestive symptoms or side effects.
- Users could set a daily reminder to consume the recommended serving size at the same time each day, track which meals they use it with, and note any changes in energy levels or blood sugar stability. The app could provide education about proper swallowing techniques and blood sugar management alongside product use.
- Long-term tracking should include weekly blood sugar averages, monthly weight changes, quarterly swallowing difficulty assessments, and ongoing notes about product acceptance and any side effects. Users should share this data with their healthcare provider to ensure the product is meeting their individual needs.
This research describes laboratory testing of a food formula and has not been tested in human subjects. The findings are theoretical predictions based on chemical and physical testing, not proven effects in people. This article is for educational purposes only and should not be used to make changes to medical care, diet, or diabetes management. Anyone with swallowing difficulties or blood sugar concerns should consult their healthcare provider before making dietary changes. This product is not currently available for consumer use and may never be commercialized. Always follow your doctor’s recommendations for managing dysphagia and glucose metabolism disorders.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.
