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Open research questions in Garlic and Onion Studies

149 gap statements mined from Garlic and Onion Studies papers in our 7.9M-paper local library, which holds 502 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

  • The study highlights the need for novel agents that target multiple pathological axes. The paper also notes the potential of cyclopeptides as therapeutic candidates.

    Cyclopeptide heterophyllin from Pseudostellaria heterophylla alleviates neuroinflammation: a study integrating molecular dynamics, inflammatory pathway analysis, and in vivo validation · 2026 · DOI

  • One of the challenges is the potential toxicity of fipronil to the male reproductive system. Another challenge is the need to develop effective strategies to mitigate fipronil-induced reproductive impairments. The study also faced the challenge of investigating the mechanisms of fipronil-induced reproductive toxicity and the potential of natural extracts in mitigating these effects.

    Modulating Effects of L-Arginine and Tribulus terrestris Extract on Fipronil-Induced Interference in the Male Reproductive System of Rats: Antioxidant Potential, Androgen Receptors, and Nitric Oxide Synthase Interplay · 2025 · DOI

  • There is a need to develop a new functional chemical that is effective in reducing hangovers and repairing liver damage.

    Exploring the Nutritional Profiling and Therapeutic Effect of Fermented Garlic on Alcohol-Induced Liver Injury in Animal Model · 2025 · DOI

  • Thermal aging transforms white garlic (WG) into black garlic (BG), potentially modifying its biological activity; however, its effects on intestinal barrier function and host-microbiota interactions remain insufficiently characterized.

    Comparative impact of white and black garlic on intestinal homeostasis: barrier protection, inflammation and microbiota modulation · 2026 · DOI

  • SAC has been detected in the brain after oral administration in animal studies, suggesting relevance to neuroinflammatory processes; however, its direct effects on nutrient-responsive glial cells remain unclear.

    S-allyl cysteine suppresses lipopolysaccharide-induced microglial inflammation accompanied by attenuation of JNK1/2 and STAT3 signaling · 2026 · DOI

  • Sensitivity of results to the selection of alternative methods for defining thresholds should be examined.

    Allium gulbasanii (Amaryllidaceae; Allium sect. Codonoprasum Rechb.), a new species from Elazığ (Türkiye) · 2026 · DOI

  • Optimization of tissue culture and genetic transformation protocols remains essential to improve regeneration efficiency and facilitate genome editing. Stable fertility restoration in breeding populations is still a challenge.

    Review on Garlic (Allium sativum L.) Breeding Advances and Achievements Globally · 2026 · DOI

  • The lack of genetic diversity in garlic due to sterility and vegetative propagation. The need for biotechnological methods to improve breeding and increase genetic diversity.

    Review on Garlic (Allium sativum L.) Breeding Advances and Achievements Globally · 2026 · DOI

  • The lack of studies on the composition and potential uses of the entire onion plant. The limited use of the onion plant, with most of the plant being considered waste.

    Granulometría y análisis proximal de harina de diferentes órganos de cebolla cambray · 2026 · DOI

  • The diagnosis of garlic toxicosis can be challenging due to the lack of specific clinical signs. The exact ingested dose of garlic is often not feasible to obtain.

    Fatal Garlic (Allium sativum) Toxicosis in a Dog: Gross and Histopathological Findings in a Rare Case of Systemic Hemolytic Injury · 2026 · DOI

  • There is a limited literature describing the histopathological findings of garlic toxicosis in dogs. The exact mechanisms of garlic toxicity in dogs are not fully understood.

    Fatal Garlic (Allium sativum) Toxicosis in a Dog: Gross and Histopathological Findings in a Rare Case of Systemic Hemolytic Injury · 2026 · DOI

  • There is a need for natural alternatives to antibiotic growth promoters in livestock production. The effects of allicin on the intestinal microbiota and production efficiency in livestock are not fully understood.

    The effect of allicin on the intestinal microbiota and production efficiency in selected farm animals · 2026 · DOI

  • Further studies are needed to investigate the effects of different processing methods on DADS and DATS concentrations. Research on the biological activity of DADS and DATS in different garlic products is necessary. Studies on the stability of DADS and DATS in garlic products during storage and transportation are required.

    Quantitative GC-FID Analysis of DADS and DATS in Commercial Garlic Products: Effects of Product Formulation and Processing · 2026 · DOI

  • Lack of characterization of onion waste for nutrient recovery and waste volume reduction. Limited information on the phytochemical content and antioxidant activity of onion waste.

    Sustainable Valorization of Domestic Onion Waste: Comprehensive Characterization for Nutrient Recovery and Waste Volume Reduction · 2026 · DOI

  • More clinical studies are needed to confirm the findings. Longer duration studies are needed to determine the long-term effects of garlic extract on dyslipidemia.

    Studi Literatur: Profil Lipid pada Subjek Dislipidemia dengan Pemberian Ekstrak Allium sativum L · 2026 · DOI

  • There is a limited number of clinical studies on the effect of garlic extract on dyslipidemia. The duration of the studies is short (90 days or less).

    Studi Literatur: Profil Lipid pada Subjek Dislipidemia dengan Pemberian Ekstrak Allium sativum L · 2026 · DOI

  • The paper only corrects errors in a previous article and does not provide new research. The correction is limited to the size of the fish tank and the Cat. No. of the My-Biosource commercial kit.

    Correction: Dietary cauliflower (Brassica oleracea var. botrytis) mitigates benzo[a]pyrene-induced oxidative stress, immune dysfunction, and tissue damage in Nile tilapia · 2026 · DOI

  • It highlights the need to track dynamic carbohydrates and fructan-metabolizing enzymes throughout all growth stages of garlic.

    Dynamic Changes in Carbohydrate Accumulation and Activities of Associated Fructan-Metabolizing Enzymes Throughout All Growth Stages of Garlic (Allium sativum L.) · 2026 · DOI

  • Fructan contents and enzyme activities exhibited obvious stage-specific patterns and could act as potential biochemical markers for distinguishing growth stages of ‘Ledu purple garlic’ under the present single-site field trial; their broad applicability across diverse garlic cultivars remains to be verified.

    Dynamic Changes in Carbohydrate Accumulation and Activities of Associated Fructan-Metabolizing Enzymes Throughout All Growth Stages of Garlic (Allium sativum L.) · 2026 · DOI

  • Further study of the genus Allium is needed to fully understand its evolution and diversification. Investigation of the ecological and conservation implications of the discovery of the new species.

    Allium erimomeli, a new hexaploid species of A. sect. Codonoprasum (Amaryllidaceae) from Milos and Antimilos Islands (Kiklades, Greece) · 2026 · DOI

  • The need to optimize ZnO NP fertilization rates for maximum impact on organosulfur metabolite profiles. The potential for ZnO NPs to have unintended effects on plant growth and development.

    Nano-Enabled Zinc Fertilization Alters Targeted Organosulfur Metabolite Profiles in Garlic (Allium sativum L.) · 2026 · DOI

  • Further studies on the potential applications of the flours obtained from the onion parts. Investigation of the effects of processing conditions on the composition and quality of the flours.

    Granulometría y análisis proximal de harina de diferentes órganos de cebolla cambray · 2026 · DOI

  • Further studies on the application of onion waste in food and pharmaceutical industries. Investigation of the anti-microbial effects of onion waste extract in food preservation and medical applications.

    Sustainable Valorization of Domestic Onion Waste: Comprehensive Characterization for Nutrient Recovery and Waste Volume Reduction · 2026 · DOI

  • Replicated common-garden or controlled-environment trials are suggested, - Further studies on the genetic effects of the accessions are needed, - Future propagation studies can be based on the findings…

    Phenotypic and ISSR-Based Molecular Diversity and Preliminary In Vitro Establishment of Wild Leek (Allium ampeloprasum L.) Germplasm · 2026 · DOI

  • Determine whether collagenase inhibition can be achieved at non-cytotoxic concentrations - Evaluate the formulation feasibility and skin delivery of the extract - Confirm the extract's activity using appropriate skin models - Evaluate the residual solvent content, formulation stability, skin delivery, and safety before cosmetic…

    Microwave-Assisted Extraction of a Quercetin-Containing Onion Leaf Extract for Potential Anti-Aging Cosmetic Applications · 2026 · DOI

Most-cited papers in Garlic and Onion Studies

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Open questions raised by papers listed on this page include: (1) Thermal aging transforms white garlic (WG) into black garlic (BG), potentially modifying its biological activity; however, its effects on intestinal barrier function and host-microbiota interactions remain insufficiently characterized (“Comparative impact of white and black garlic on intestinal homeostasis: barrier…”, 2026); (2) SAC has been detected in the brain after oral administration in animal studies, suggesting relevance to neuroinflammatory processes; however, its direct effects on nutrient-responsive glial cells remain unclear (“S-allyl cysteine suppresses lipopolysaccharide-induced microglial inflammation…”, 2026); (3) The lack of genetic diversity in garlic due to sterility and vegetative propagation (“Review on Garlic (Allium sativum L.) Breeding Advances and Achievements Globally”, 2026); (4) The lack of studies on the composition and potential uses of the entire onion plant (“Granulometría y análisis proximal de harina de diferentes órganos de cebolla…”, 2026); (5) The diagnosis of garlic toxicosis can be challenging due to the lack of specific clinical signs (“Fatal Garlic (Allium sativum) Toxicosis in a Dog: Gross and Histopathological…”, 2026). 149 gap statements have been mined from Garlic and Onion Studies papers in our 7.9M-paper local library, which holds 502 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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