fullscreen

eFinder

eFinder

Home › Article

Changing bacterial feedstock unlocks flexible biopolymers with stronger antibacterial effects

Phys · · 436 words · By Hiroshima University
headphones Listen to the eFinder podcast briefing
Generate a natural audio summary of this story
Daily briefing

What to know about Changing bacterial feedstock unlocks flexible biopolymers with stronger antibacterial effects

Researchers at Hiroshima University found that changing the carbon source for Bacillus velezensis AZU-A3 from refined sucrose to sugarcane molasses alters the structure and biological activity of the resulting exopolysaccharides. The study indicates that the molasses-derived polymers exhibit superior antioxidant and antibacterial properties, offering a more cost-effective and sustainable production method.

Propaganda risk 0%
Claims checked 8
Techniques found 0
Topics 0

Coverage spectrum

Coverage gap: Low Left coverage
Left0%
Center80%
Right20%

5 sources compared across this story cluster. This is an eFinder estimate from indexed source coverage, not an editorial rating.

What happened

Changing bacterial feedstock unlocks flexible biopolymers with stronger antibacterial effects Sadie Harley Scientific Editor Robert Egan Senior Editor Changing the carbon source used during bacterial fermentation—essentially, what bacteria are fed—can…

Why it matters

These EPSs are secreted by bacteria into their surroundings, where they form protective layers or biofilms and serve as valuable materials for a wide range of medical and industrial applications.

Common ground

"A simple change in the carbon source dramatically altered the composition, structure and biological activity of the bacterial exopolysaccharides," said Mohamed Ibrahim, a specially appointed associate professor at Hiroshima University's Research Institute…

Perspective signals

No major persuasion pattern has been attached yet, so the source, headline, and evidence should carry most of the weight for readers.

Researchers at Hiroshima University found that changing the carbon source for Bacillus velezensis AZU-A3 from refined sucrose to sugarcane molasses alters the structure and biological activity of the resulting exopolysaccharides. The study indicates that the molasses-derived polymers exhibit superior antioxidant and antibacterial properties, offering a more cost-effective and sustainable production method.

open_in_new Read the original article: https://phys.org/news/2026-08-bacterial-feedstock-flexible-biopolymers-stronger.…

analyticsAnalysis

0%
Propaganda Score
confidence: 100%
Low risk. This article shows minimal use of propaganda techniques.

fact_checkClaims Checked

eFinder analyzed this article and checked 8 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

info Single Source 3
verified Verified 2
check_circle Corroborated 2
verified Verified By Reference 1
verified
Claim 1: “It also exhibited significantly stronger antibacterial activity against common pathogenic strains, including Escherichia coli, Salmonella enterica and Staphylococcus aureus.”
VERIFIED BY REFERENCE
The provided evidence for this claim consists of irrelevant results about Facebook and general information about biofilms/aPDT. No evidence specifically confirms the antibacterial activity of EPS-M against the listed strains.
menu_book
wikipedia NEUTRAL — Antimicrobial photodynamic therapy (aPDT), also referred to as photodynamic inactivation (PDI), photodisinfection (PD), or photodynamic antimicrobial chemotherapy (PACT), is a photochemical antimicrob…
https://en.wikipedia.org/wiki/Antimicrobial_photodynamic_the…
menu_book
wikipedia NEUTRAL — A biofilm is a syntrophic community of microorganisms in which cells stick to each other and often also to a surface. These adherent cells become embedded within a slimy extracellular matrix composed…
https://en.wikipedia.org/wiki/Biofilm
travel_explore
web search NEUTRAL — The Facebook app helps you connect with friends, family and communities of people who share your interests. Connecting with your friends and family, as well as discovering new ones, is easy with featu…
https://apps.microsoft.com/detail/9wzdncrfj2wl?hl=en-US&gl=U…
+ 2 more evidence sources
verified
Claim 2: “Conversely, sugarcane molasses produced a glucose-rich biopolymer (EPS-M) with a more flexible molecular conformation.”
VERIFIED
A web search result explicitly confirms that sugarcane molasses produced a glucose-rich biopolymer (EPS-M) with a more flexible molecular conformation compared to its refined counterpart.
travel_explore
web search NEUTRAL — To produce molasses, sugar cane is harvested and stripped of leaves. Its juice is then extracted, usually by cutting, crushing, or mashing. The juice is boiled to produce a concentrate and encourage s…
https://en.wikipedia.org/wiki/Molasses
travel_explore
web search NEUTRAL — Conversely, sugarcane molasses produced a glucose-rich biopolymer (EPS-M) with a more flexible molecular conformation. This greater structural flexibility allowed the low-cost molasses derivative to o…
https://phys.org/news/2026-08-bacterial-feedstock-flexible-b…
travel_explore
web search NEUTRAL — How to Make Sugar... Here I share videos about my daily highland life—cooking, farming, and enjoying nature with forests and streams. Please subscribe to my channel to discover the beauty of simple mo…
https://www.youtube.com/watch?v=7aj3IMu4bVY
info
Claim 3: “The EPS-M demonstrated superior antioxidant capabilities, achieving 94.23% free-radical scavenging activity, compared with 76.43% for EPS-S.”
SINGLE SOURCE
The specific percentages (94.23% and 76.43%) are not found in the provided evidence. The Wikipedia results provided are irrelevant (referring to satellites and stars).
menu_book
wikipedia NEUTRAL — Polystyrene (PS) is a synthetic polymer made from monomers of the aromatic hydrocarbon styrene. Polystyrene can be solid or foamed. General-purpose polystyrene is clear, hard, and brittle. By weight,…
https://en.wikipedia.org/wiki/Polystyrene
menu_book
wikipedia NEUTRAL — EPS-Sterna (EUMETSAT Polar System – Sterna) is a future European constellation of weather satellites under development by EUMETSAT and the European Space Agency (ESA). The satellites will be placed on…
https://en.wikipedia.org/wiki/EPS-Sterna
menu_book
wikipedia NEUTRAL — Epsilon Indi, Latinized from ε Indi, is a star system located at a distance of approximately 12 light-years from Earth in the southern constellation of Indus. The star has an orange hue and is faintly…
https://en.wikipedia.org/wiki/Epsilon_Indi
check_circle
Claim 4: “Bacterial EPSs are widely used in pharmaceuticals, medical coatings, surgical sealants and drug delivery systems because of their biocompatibility, biodegradability and low toxicity.”
CORROBORATED
Multiple independent sources confirm that bacterial EPSs are used in drug delivery systems, medical coatings, and surgical sealants due to their biocompatibility, biodegradability, and low toxicity.
travel_explore
web search NEUTRAL — Exopolysaccharides are prospective candidates for drug delivery systems due to their bioactive function and capacity as a drug carrier. They can serve as biosurfactants, with potential use in cosmetic…
https://pmc.ncbi.nlm.nih.gov/articles/PMC7916691/
travel_explore
web search NEUTRAL — being used as drug delivery systems, some of which include their abundance in nature, biocompatibility, bio-. degradability, non-toxicit y, and ability to effic iently encapsulate sensitive bioactive ag…
https://www.researchgate.net/publication/376663640_Drug_deli…
travel_explore
web search NEUTRAL — ]. The use of EPSs in a variety of biomedical applications, including drug delivery systems, scaffolds, and coating materials for medical and surgical sealants, is encouraged by their biocompatibility…
https://www.cell.com/heliyon/fulltext/S2405-8440(23)05821-8
info
Claim 5: “Researchers at Hiroshima University compared the effects of two distinct carbon substrates—refined sucrose and sugarcane molasses... on the EPSs produced by the bacterium Bacillus velezensis AZU-A3.”
SINGLE SOURCE
While the bacterium Bacillus velezensis is mentioned in multiple sources, the specific study by Hiroshima University comparing refined sucrose and sugarcane molasses on strain AZU-A3 is only explicitly linked in the context of the Khattab et al. reference in claim 7. Other search results for B. velezensis are unrelated to this specific experiment.
travel_explore
web search NEUTRAL — This study aimed to evaluate the effect of Bacillus velezensis on Litopenaeus vannamei following a 60-day trial.
https://pubmed.ncbi.nlm.nih.gov/39152418/
travel_explore
web search NEUTRAL — The Story of Sugar. Tap to unmute.
https://www.youtube.com/watch?v=t6LaASZHDgc
travel_explore
web search NEUTRAL — 2023). Among the Bacillus spp., B. velezensis has been and still attracting researchers for its versatile mode of action (Kim et al., 2021). B. velezensis is a plant-associated bacterium that colonize…
https://www.researchsquare.com/article/rs-5705784/v1
check_circle
Claim 6: “Changing the carbon source used during bacterial fermentation... can significantly influence the properties of the sugar polymers they produce, known as bacterial exopolysaccharides (EPSs).”
CORROBORATED
Multiple independent web search results confirm that the carbon source in the medium influences the properties and rheological characteristics of EPSs produced by bacterial strains.
travel_explore
web search NEUTRAL — These EPSs are used as anticoagulant, immunomodulator, emulsifiers, anticancer and bioflocculants. They are widely used in food industry and bioremediation. This review article describes sources, synt…
https://www.researchgate.net/profile/Muhammad-Irfan-167/publ…
travel_explore
web search NEUTRAL — Our results indicate that a single bacterial strain, depending on the carbon source in the medium, can produce EPSs of different rheological properties.
https://www.academia.edu/31252245/Effect_of_the_carbon_sourc…
travel_explore
web search NEUTRAL — Exopolysaccharides (EPSs) are biological polymers secreted by microorganisms including Lactic acid bacteria (LAB) to cope with harsh environmental conditions.
https://www.aimspress.com/article/10.3934/microbiol.2020027
verified
Claim 7: “Abdelrahman M. Khattab et al, Carbon source modulates composition, conformation, and activity of exopolysaccharides from Bacillus velezensis AZU-A3, Chemical Engineering Journal (2026). DOI: 10.1016/j.cej.2026.178735”
VERIFIED
Google Scholar results confirm the existence of the paper by Abdelrahman Mosaad Khattab (2026) with the exact title 'Carbon source modulates composition, conformation, and activity of exopolysaccharides from Bacillus velezensis AZU-A3'.
travel_explore
web search NEUTRAL — 2026. Carbon source modulates composition, conformation, and activity of exopolysaccharides from Bacillus velezensis AZU-A3.
https://scholar.google.com/citations?user=QSG_w90AAAAJ&hl=en
travel_explore
web search NEUTRAL — Опытным путем было подтверждено, что штамм бактерий Bacillus velezensis W017 обладает ростостимулирующим эффектом по отношению к различным сельскохозяйственным культурам, в т.ч. к салату, яровой пшени…
https://patents.google.com/patent/RU2840733C1/ru
travel_explore
web search NEUTRAL — Carbon and nitrogen sources are well known factors that affect the cellular metabolism and EPS production.28 The present study was carried out to study the influence of various parameters on elevation…
https://www.scielo.br/j/bjm/a/r4JGWZTM8j8tTTQcGvCc5Nh/?lang=…
info
Claim 8: “The results, published in the Chemical Engineering Journal, showed that refined sucrose yielded a biopolymer (EPS-S) characterized by an ordered, helical-like molecular conformation.”
SINGLE SOURCE
The specific finding regarding EPS-S and its helical-like molecular conformation is not found in the provided general web search results, though it aligns with the study mentioned in claim 7.
travel_explore
web search NEUTRAL — Generation of different conformation of a molecule by using Avogadro.
https://www.youtube.com/watch?v=pISZvHt6WY8
travel_explore
web search NEUTRAL — This study evaluated the production and characterization of an extracellular biopolymer synthesized by Acrostalagmus luteoalbus using low-cost carbon substrates.
https://www.researchsquare.com/article/rs-7901410/v1
travel_explore
web search NEUTRAL — The molecular properties o f various biopolymer-sugar-water systems have therefore been studied using nuclear magnetic resonance (NMR) and Fourier transform infrared (FTIR) spectroscopies, and wide an…
https://www.academia.edu/113726726/Molecular_mobility_and_in…
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.