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A new low-calorie sweetener could also improve gut health, study shows

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A new low-calorie sweetener could also improve gut health, study shows

August 5, 2022 by Asia Food Journal

low-calorie sweetener

Courtesy of Shirley Hirst/Pixabay

From the wide variety of sodas, candies, and baked goods that are sold worldwide, it’s clear that people love their sweet treats. But consuming too much white table sugar or artificial sweetener can lead to health issues.

In the search for a better sweetener, researchers in ACS’ Journal of Agricultural and Food Chemistry now report a low-calorie mixture that is as sweet as table sugar and, in lab experiments, feeds “good” gut microbes.

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Artificial sweeteners have exploded in popularity because they let people consume sweets without calories. However, while they’re considered safe for human consumption, studies in animals and humans suggest that some of them can stimulate appetite, leading to increased food consumption and weight gain, as well as other negative health outcomes. So, researchers have been turning to the study of low-calorie or extremely sweet substances from natural sources as possible replacements.

For example, galactooligosaccharides — found in mammalian milk — are low-calorie sugars with a prebiotic activity that can be a source of energy for beneficial gut microbes, but they’re not quite sweet enough to replace table sugar. Alternatively, extracts from the luo han guo fruit contain mogrosides — compounds 200 to 300 times sweeter than table sugar. But these extracts sometimes have off-flavors, which can be removed with enzymes.

So, F. Javier Moreno and colleagues wanted to take advantage of the best aspects of both natural substances, using enzymes to modify mogrosides while simultaneously producing galactooligosaccharides for a brand-new low-calorie sweetener.

The researchers started with lactose and mogroside V (the primary mogrosidein luo han guo fruit). When they added β-galactosidase enzymes, the researchers obtained a mixture that contained mostly galactooligosaccharides and a small amount of modified mogrosides. A trained sensory panel reported that the new combination had a sweetness similar to that of sucrose (table sugar), suggesting it could be acceptable to consumers.

In test tube experiments, the new sweetener increased the levels of multiple human gut microbes that are beneficial, including Bifidobacterium and Lactobacillus bacterial species. In addition, increases in bacteria-produced metabolites, such as acetate, propionate, and butyrate, indicated that the mixture could potentially have a prebiotic effect on the gut microbiome.

The researchers say that the new sweetener holds promise in these initial analyses, and their next step is to more closely study the substance’s impact on human gut health.

The authors acknowledge funding from Optibiotix Health Plc (York, U.K.), the Spanish Ministry of Science, Innovation, and Universities, and the European Union’s Horizon 2020 research and innovation program. One of the study’s authors is employed by Optibiotix Health Plc.

The American Chemical Society (ACS) is a nonprofit organization chartered by the U.S. Congress. ACS’ mission is to advance the broader chemistry enterprise and its practitioners for the benefit of Earth and all its people.

The Society is a global leader in promoting excellence in science education and providing access to chemistry-related information and research through its multiple research solutions, peer-reviewed journals, scientific conferences, eBooks, and weekly news periodical Chemical & Engineering News.

ACS journals are among the most cited, most trusted, and most read within the scientific literature; however, ACS itself does not conduct chemical research. As a leader in scientific information solutions, its CAS division partners with global innovators to accelerate breakthroughs by curating, connecting, and analyzing the world’s scientific knowledge. ACS’ main offices are in Washington, D.C., and Columbus, Ohio.

Other Topics: gut health, Ingredients, low-calorie sweetener, microbes, sweetener

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