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Open research questions in Microbial Metabolites in Food Biotechnology

156 gap statements mined from Microbial Metabolites in Food Biotechnology papers in our 7.9M-paper local library, which holds 674 papers on the topic — drawn mostly from each paper's own stated research gap, future-work, challenge and limitation notes, and its abstract. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one.

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What the literature leaves open

  • Prior work has focused on the beneficial effects of soy protein, but the specific effects of fructooligosaccharides are not well understood.

    Effects of fructooligosaccharides on the physicochemical and antioxidant properties of soymilk fermented with Levilactobacillus brevis VTCC 10397 · 2026 · DOI

  • The paper identifies challenges in the production of EPSs by extremophiles, including the need for optimal growth conditions. It highlights the challenges in scaling up EPS production for commercial applications. The review notes the need for further research on the properties and applications of EPSs produced by extremophiles.

    Extremophilic Exopolysaccharides: Bioprocess and Novel Applications in 21st Century · 2025 · DOI

  • The lack of efficient methods for the valorization of oat husks. The need for a sustainable biorefinery framework for the comprehensive utilization of lignocellulosic biomass. The challenge of overcoming the recalcitrance of biomass for the production of valuable bioproducts.

    Valorization of Oat Husk for the Production of Fermentable Sugars, Xylooligosaccharides, and Inulinase via Deep Eutectic Solvent and Microwave-Assisted Pretreatment · 2025 · DOI

  • The molecular mechanisms of the catabolism and growth promotion of xylooligosaccharides in Lactobacillus spp. are unknown. The growth-promoting effect of xylooligosaccharides in Lactobacillus is strain/species-specific. There is a need to investigate the catabolism mechanism and growth-promoting effect of xylooligosaccharides in specific Lactobacillus strains.

    Catabolism Mechanism and Growth-Promoting Effect of Xylooligosaccharides in Lactiplantibacillus plantarum Strain B20 · 2025 · DOI

  • The gap in the literature is not explicitly stated, but the study aims to investigate the effects of sonication on the fermentation process and quality of fermented black carrot juice. The study fills the gap by providing insights into the use of sonication as a technique to improve the fermentation process and product quality.

    Impacts of Sonication on Fermentation Process and Physicochemical, Microbiological and Sensorial Characteristics of Fermented Black Carrot Juice · 2025 · DOI

  • Limited understanding of the prebiotic effect of fructooligosaccharides and raffinose family oligosaccharides on fermented soymilk. Need for enhancement of nutritional and sensory quality of synbiotic soymilk.

    Evaluation of Sensory Properties and Short-Chain Fatty Acid Production in Fermented Soymilk on Addition of Fructooligosaccharides and Raffinose Family of Oligosaccharides · 2025 · DOI

  • The need for developing a melomel using cupuaçu and the probiotic yeast Saccharomyces cerevisiae var. boulardii. The lack of studies on the physicochemical and microbiological characteristics of cupuaçu melomel.

    Production of “Melomel” from Cupuaçu (Theobroma grandiflorum) Using the Probiotic Yeast Saccharomyces cerevisiae var. boulardii · 2025 · DOI

  • The physiological role of extracellular polysaccharides produced by lactic acid bacteria is not fully understood. The potential of these polysaccharides as natural and safe agents for constipation-related disorders needs to be explored.

    Oxidative, Inflammatory, and Constipation Stress Modulation by a Heteropolysaccharide from Lacticaseibacillus rhamnosus CRL75 · 2025 · DOI

  • The need for cost-effective and environmentally friendly biotechnological strategies for producing novel gluco-oligosaccharides. The lack of understanding of the gut microbiome modulatory effects of novel oligosaccharides.

    Characterizations and In Vitro Gut Microbiome Modulatory Effects of Gluco-Oligosaccharides Synthesized by the Acceptor Reactions of Glucansucrase 53 · 2025 · DOI

  • The need for alternative and sustainable substrates for the production of high-value-added bioproducts. The lack of integrated biotechnological platforms for the production of mycoprotein and extracellular (1→6)-β-D-glucan.

    Bioprospecting the Endophytic Fungus, Lasiodiplodia theobromae MMPI, for the Integrated Production of Mycoprotein and Exocellular (1→6)-β-Glucan · 2025 · DOI

  • The presence of pentose sugars in lignocellulosic biomass, which are not readily metabolized by conventional LAB strains. Challenges related to substrate optimization and the fine-tuning of fermentation parameters.

    Banana Pseudostem By-Product: A Sustainable Source of Prebiotics and Protection for Probiotic Lactic Acid Bacteria Under Gastrointestinal Conditions · 2025 · DOI

  • The lack of understanding of the impact of co-fermentation on sourdough properties and steamed bread quality. The need to optimize microbial synergy between Kazachstania humilis and Lactobacillus plantarum. The gap in the utilization of sourdough in the fermentation of steamed bread.

    Enhancing Steamed Bread Quality Through Co-Fermentation of Sourdough with Kazachstania humilis and Lactobacillus plantarum · 2025 · DOI

  • The need for non-dairy probiotic beverages. The potential of using licuri aqueous extract as a matrix for functional beverages. The lack of studies on the development and characterization of fermented beverages using adapted kefir grains in aqueous extract of licuri.

    Adapted Kefir Grains in Aqueous Extract of Licuri (Syagrus coronata): Development and Characterization of a Novel Non-Dairy Probiotic Beverage · 2025 · DOI

  • There is a need to enrich kefir with functional ingredients to enhance its nutritional value. Stinging nettle has potential as a useful food functional ingredient but its effects on kefir are not well studied.

    Effects of Stinging nettle Powder on Probiotics Survival, Physiochemical Properties, and Nutritional Value of Kefir · 2025 · DOI

  • The concrete factor of IBD etiology is not clarified. The effect of inulin on stress-recurrent IBD is not well understood.

    Protective Effects of Inulin on Stress-Recurrent Inflammatory Bowel Disease · 2024 · DOI

  • The incorporation of Spirulina platensis powder in yogurt is a relatively new area of research. There is a need to evaluate the physicochemical and bioactive compounds characteristics of yogurt incorporating Spirulina platensis powder. The stability of bioactive compounds in yogurt after fermentation and stabilization processes is not well understood.

    Incorporation of Agglomerated Spirulina platensis Powder in Yogurt: A Strategy for Enhancing Nutritional Quality and Bioactive Compounds · 2025 · DOI

  • However, their effects on gut microbiota, inflammation, brain reactive oxygen species (ROS) production, microglial morphology, dendritic spine density, and cognitive function remain underexplored in high-fat diet (HFD)-induced obese rats.

    Prebiotic-based banana snacks ( Musa sapientum L.) alleviate cognitive impairment by reducing brain inflammation, apoptosis, microglial activation, and dendritic spine loss in obese rats · 2026 · DOI

  • Whereas the specificity of different NDOs towards certain intestinal bacterial species remains unclear.

    Prebiotic activity comparison of eight oligosaccharides: selection of a potential synbiotic containing konjac manna-oligosaccharides and Bifidobacterium animalis BB-12 · 2025 · DOI

  • Possible explanations for the absence of ergogenic effects may be that the timing between prebiotic ingestion and exercise was too short to allow for complete fermentation into acetate, participants were in a fasted rather than a fed state, or that the single dose of supplement was insufficient.

    The Role of Fermentable Fibre on Endurance Exercise Capacity: A Randomised Crossover Trial of Inulin Supplementation · 2025 · DOI

  • These factors, together with advanced methods (stable isotope studies) should be investigated in a follow‐up study to elucidate the fate and role of colonic‐derived acetate during exercise.

    The Role of Fermentable Fibre on Endurance Exercise Capacity: A Randomised Crossover Trial of Inulin Supplementation · 2025 · DOI

  • Investigate the effects of sonication on other types of fermented products. Study the effects of sonication on fermentation process at different temperatures. Examine the effects of sonication on the shelf life of fermented black carrot juice.

    Impacts of Sonication on Fermentation Process and Physicochemical, Microbiological and Sensorial Characteristics of Fermented Black Carrot Juice · 2025 · DOI

  • Regulation of production guidelines for foods with functional and nutraceutical characteristics, - Enhancement of quality control and provision of correct information…

    Incorporation of Agglomerated Spirulina platensis Powder in Yogurt: A Strategy for Enhancing Nutritional Quality and Bioactive Compounds · 2025 · DOI

  • Investigate the effects of BPS on human health, - Study the prebiotic potential of BPS in vivo, - Explore the use of BPS as a substrate for other…

    Banana Pseudostem By-Product: A Sustainable Source of Prebiotics and Protection for Probiotic Lactic Acid Bacteria Under Gastrointestinal Conditions · 2025 · DOI

  • The study identifies a gap in the understanding of the effect of calcium on the fermentation of white cabbage with salicornia. The research aims to contribute to the understanding of the fermentation process and its potential applications.

    The Effect of Calcium in the Fermentation of White Cabbage with Salicornia · 2025 · DOI

  • Investigate the effects of different concentrations of Stinging nettle powder on kefir, - Study the effects of Stinging nettle powder on human health, - Examine the potential use of Stinging nettle powder in other food…

    Effects of Stinging nettle Powder on Probiotics Survival, Physiochemical Properties, and Nutritional Value of Kefir · 2025 · DOI

Most-cited papers in Microbial Metabolites in Food Biotechnology

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Open questions raised by papers listed on this page include: (1) Prior work has focused on the beneficial effects of soy protein, but the specific effects of fructooligosaccharides are not well understood (“Effects of fructooligosaccharides on the physicochemical and antioxidant…”, 2026); (2) Their effects on gut microbiota, inflammation, brain reactive oxygen species (ROS) production, microglial morphology, dendritic spine density, and cognitive function remain underexplored in high-fat diet (HFD)-induced obese rats (“Prebiotic-based banana snacks ( Musa sapientum L.) alleviate cognitive…”, 2026); (3) The lack of efficient methods for the valorization of oat husks (“Valorization of Oat Husk for the Production of Fermentable Sugars,…”, 2025); (4) The molecular mechanisms of the catabolism and growth promotion of xylooligosaccharides in Lactobacillus spp. are unknown (“Catabolism Mechanism and Growth-Promoting Effect of Xylooligosaccharides in…”, 2025); (5) The lack of studies on the physicochemical and microbiological characteristics of cupuaçu melomel (“Production of “Melomel” from Cupuaçu (Theobroma grandiflorum) Using the…”, 2025). 156 gap statements have been mined from Microbial Metabolites in Food Biotechnology papers in our 7.9M-paper local library, which holds 674 papers on the topic; the gaps come from whichever of those papers state one. They are mostly the research gaps the authors state and the papers' abstracts, plus future-work, limitations and challenges passages. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one, so you can read the original claim in context.

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