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Open research questions in Microencapsulation and Drying Processes

131 gap statements mined from Microencapsulation and Drying Processes papers in our 4.5M-paper local library, which holds 990 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

  • Microencapsulation technologies have been applied to overcome these challenges, but there is still a need for effective carriers for probiotics.

    Fabrication of Sodium Alginate/Inulin Synbiotic Beads for Protection and Delivery of Lactobacillus plantarum in Storage and Simulated Gastrointestinal Conditions · 2026 · DOI

  • Further studies could investigate the effects of different encapsulating agents on the stability and bioaccessibility of black carrot anthocyanins. Research could explore the application of spray-drying microencapsulation to other types of natural colorants. The development of new encapsulation techniques or the optimization of existing ones could be investigated.

    Microencapsulation of Black Carrot Anthocyanins by Conventional and Three-Nozzle Spray-Drying: Effect on Storage Stability and Bioaccessibility · 2026 · DOI

  • Further research could investigate the use of P. edulis starch in various applications. Studies could explore the effects of different extraction conditions on the properties of P. edulis starch.

    Optimization of starch extraction from Plectranthus edulis tubers using response surface methodology and evaluation of physicochemical and functional properties · 2026 · DOI

  • Lack of optimization of starch extraction from P. edulis tubers. Limited information on the physicochemical and functional properties of P. edulis starch.

    Optimization of starch extraction from Plectranthus edulis tubers using response surface methodology and evaluation of physicochemical and functional properties · 2026 · DOI

  • The need for a technique to mask the intense taste of Artemisia absinthium L. extract. The lack of studies on the incorporation of microencapsulated bitter compounds into baked products. The need for characterization of the final product in terms of proximate composition, total phenolic content, and antioxidant activity.

    Alginate-Based Beads Containing Artemisia absinthium L. Extract as Innovative Ingredients for Baked Products · 2026 · DOI

  • The lack of understanding of the dissolution behaviors of food powders. The need for a non-destructive, time-resolved technique to study the interactions between food powders and water.

    Low-field NMR as a tool to differentiate self- and forced-dissolution mechanisms in food powders · 2026 · DOI

  • Avocado peel polyphenols have low long-term stability. Nanoencapsulation can overcome this limitation, but the effect of extract concentration on nanoparticle characteristics is unknown.

    Formation and Characterization of Nanoparticles from Avocado Peel Extract and Bovine Serum Albumin · 2026 · DOI

  • The gap in the literature is the lack of exploration of protein-based encapsulating materials for microencapsulation. The study addresses the need for a computational pre-screening approach for evaluating microencapsulation matrices. The research gap is the limited understanding of the interaction tendencies of indomethacin with protein-based materials.

    Exploratory In Silico Evaluation of Microencapsulation Matrices for Indomethacin · 2026 · DOI

  • Retaining volatile bioactives within hydrophilic matrices remains a challenge. The stability of emulsions and the viscosity of the matrix are critical factors in determining essential oil retention. The study had to optimize the concentration of orange essential oil in the emulsions to achieve stable emulsions and phase separation after casting.

    From Emulsions to Films: The Role of Polysaccharide Matrices in Essential Oil Retention Within Active Packaging Films · 2025 · DOI

  • Limited understanding of the effects of cold plasma pretreatment on the microstructure and quality attributes of green peas. Need for novel, non-thermal, eco-friendly pretreatments for drying agricultural products.

    Cold Plasma as a Novel Pretreatment to Improve the Drying Kinetics and Quality of Green Peas · 2025 · DOI

  • The need for precision regulation of pore structures. The challenge of scalable fabrication of gradient architectures. The lack of understanding of synergy mechanisms in multi-field coupling.

    Recent Advances and Future Perspectives on Heat and Mass Transfer Mechanisms Enhanced by Preformed Porous Media in Vacuum Freeze-Drying of Agricultural and Food Products · 2025 · DOI

  • The bioavailability and structure-activity relationships of Chenpi extract components require further elucidation. The technological challenges associated with Chenpi extract application, including low stability and poor bioaccessibility, need to be addressed.

    Comparative Evaluation of Spray-Drying Versus Freeze-Drying Techniques on the Encapsulation Efficiency and Biofunctional Performance of Chenpi Extract Microcapsules · 2025 · DOI

  • The study only investigated the effects of sterol content on liposome properties. The study did not investigate the effects of other variables on liposome properties. The study used a limited number of liposome formulations.

    Liposome-Based Encapsulation of Extract from Wild Thyme (Thymus serpyllum L.) Tea Processing Residues for Delivery of Polyphenols · 2025 · DOI

  • Limited studies on the encapsulation and stabilization of black elderberry extract. Need for effective agents to improve the bioavailability and stability of the extract.

    Stabilization and Preservation of Bioactive Compounds in Black Elderberry By-Product Extracts Using Maltodextrin and Gum Arabic via Spray Drying · 2025 · DOI

  • The effects of different drying techniques on the antioxidant properties of Cistus creticus L. are not fully understood. There is a need to evaluate the feasibility of producing Cistus creticus L. powders through spray drying and freeze drying.

    Influence of Freeze Drying and Spray Drying on the Physical and Chemical Properties of Powders from Cistus creticus L. Extract · 2025 · DOI

  • Limited protection of phenolic compounds against degradation during food processing and gastrointestinal digestion.

    Dual-layer microencapsulation of grape skin extract via spray chilling and fluid-bed coating for targeted intestinal release · 2026 · DOI

  • Investigate the effects of other drying techniques on the antioxidant properties of Cistus creticus L. Evaluate the bioavailability and bioactivity of the powders in vivo. Compare the antioxidant properties of Cistus creticus L.

    Influence of Freeze Drying and Spray Drying on the Physical and Chemical Properties of Powders from Cistus creticus L. Extract · 2025 · DOI

  • Limited solubility of microencapsulated onion by-product extract. Difficulty in controlling the release of bioactive compounds from microencapsulated onion by-product extract.

    Valorization of Onion By-Products Bioactive Compounds by Spray Drying Encapsulation Technique · 2025 · DOI

  • Evaluation of alternative carriers or carrier blends, - investigation of the effects of different production techniques on the quality of mezcal…

    Microencapsulation of Mezcal Vinasse: Reduction of Undesirable Compounds Derived from the Production Process and Morphological Characterisation · 2026 · DOI

  • Investigating the effect of other factors on essential oil retention, - Optimizing the structural and processing conditions to enhance encapsulation performance, - Exploring the use of other types of polysaccharide films for essential oil…

    From Emulsions to Films: The Role of Polysaccharide Matrices in Essential Oil Retention Within Active Packaging Films · 2025 · DOI

  • 3D-printed gradient pores for customized transfer paths, - intelligent monitoring-feedback systems, - multiscale modeling bridging pore-scale physics to macroscale…

    Recent Advances and Future Perspectives on Heat and Mass Transfer Mechanisms Enhanced by Preformed Porous Media in Vacuum Freeze-Drying of Agricultural and Food Products · 2025 · DOI

  • Inherent limitations of functional molecules, such as low bioavailability and susceptibility to inactivation during processing and storage, - Challenges in improving bond stability and controlling release kinetics remain, - Material stability, safety and regulatory requirements are significant…

    Advances in pH-Responsive Release Technologies in Food System: Mechanisms, Strategies, Application Forms and Future Directions · 2025 · DOI

  • Development of food-grade, eco-friendly, and stable carrier materials, - Leveraging of AI-driven optimization for integrated systems, - Integrating multi-stimuli responsiveness, - Establishing robust safety profiles to facilitate regulatory…

    Advances in pH-Responsive Release Technologies in Food System: Mechanisms, Strategies, Application Forms and Future Directions · 2025 · DOI

  • The study used a laboratory-scale experiment, - The storage stability was tested for a limited duration of up to 40 days, - The study did not investigate the effects of encapsulation on other bioactive…

    Physicochemical Characterization, Storage Stability Behavior, and Intestinal Bioaccessibility of Clove Extract Encapsulated Using Varying Combinations of Gum Arabic and Maltodextrin · 2025 · DOI

  • Investigating the effects of other variables on liposome properties. Developing liposome formulations with improved stability and delivery properties. Investigating the applications of liposomes in food, pharmaceutical, and cosmetic industries.

    Liposome-Based Encapsulation of Extract from Wild Thyme (Thymus serpyllum L.) Tea Processing Residues for Delivery of Polyphenols · 2025 · DOI

Most-cited papers in Microencapsulation and Drying Processes

Most recent work

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Open questions raised by papers listed on this page include: (1) Further studies could investigate the effects of different encapsulating agents on the stability and bioaccessibility of black carrot anthocyanins (“Microencapsulation of Black Carrot Anthocyanins by Conventional and…”, 2026); (2) Further research could investigate the use of P. edulis starch in various applications (“Optimization of starch extraction from Plectranthus edulis tubers using…”, 2026); (3) The lack of studies on the incorporation of microencapsulated bitter compounds into baked products (“Alginate-Based Beads Containing Artemisia absinthium L. Extract as Innovative…”, 2026); (4) The lack of understanding of the dissolution behaviors of food powders (“Low-field NMR as a tool to differentiate self- and forced-dissolution…”, 2026); (5) Nanoencapsulation can overcome this limitation, but the effect of extract concentration on nanoparticle characteristics is unknown (“Formation and Characterization of Nanoparticles from Avocado Peel Extract and…”, 2026). 131 gap statements have been mined from Microencapsulation and Drying Processes papers in our 4.5M-paper local library, which holds 990 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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