NICEVIVA
MONOGRAPH SPEC LATEST 2026

Barley Grass

BOTANICALS · Evidence Monograph

Barley Grass is an evidence-graded botanicals monograph evaluated across 17 peer-reviewed PubMed studies (0 meta-analyses, 0 systematic reviews, and 0 randomized controlled trials, encompassing n = 12 cumulative participants). Current clinical evidence is rated GRADE Low (2.0 / 4.0) for phytochemical receptor modulation, adaptogenic stress response, and vascular/inflammatory pathways.

Evidence Grade (GRADE) Low (2.0 / 4.0)
Indexed PubMed Studies 17 Studies
Meta-Analyses · Reviews 0 Meta · 0 Systematic Reviews
Randomized Trials (RCT) 0 RCTs (0 Double-Blind)
Cumulative Participants n = 12
Reported Trial Dosages 100 g · 112 mg · 15 g/day
Trial Duration Range 4 weeks · 16 weeks · 14 days
Reading Time ~9 min
RECOMMENDED FOR Clinical Indication

Evidence Supports Supplementation When:

  1. 01 Individuals seeking evidence-backed support for phytochemical receptor modulation, adaptogenic stress response, and vascular/inflammatory pathways (supported by 17 indexed PubMed studies, GRADE Low).
  2. 02 Adults matching clinical trial dosing protocols (100 g · 112 mg · 15 g/day) over a structured 4 weeks evaluation window.
  3. 03 Users who have verified compatibility with their gastrointestinal tolerance and current prescription regimen.
FORMULATION SPECIFICATION · Preferred Form Standardized Marker-Compound Botanical Extract
Verify exact active marker standardization (%) rather than raw root/leaf powder weight, and screen for hepatic CYP450 drug interactions.
CLINICAL RESPONSE · Body Signal Check
Expected Response: Gradual physiological adaptation over 4–12 weeks without gastric burning or daytime sedation.
Dose Adjustment Signal: Stop immediately if unexplained fatigue, dark urine, skin rash, or right-upper-quadrant discomfort occurs.
CHRONOBIOLOGY · Optimal Dosing Window PM 12:30
Immediately After Breakfast or Lunch
Post-meal administration buffers concentrated botanical tannins and organic acids against gastric mucosal irritation.
Primary Clinical Endpoints & Physiological Biomarkers Studied Based on Indexed PubMed Trials
Primary botanicals clinical efficacy (17 PubMed studies)
Quantitative biomarker & outcome analysis (2 studies with effect-size/sample data)
Randomized controlled trial verification (0 RCTs · 0 double-blind)
Systematic review & meta-analysis synthesis (0 meta-analyses · 0 reviews)
01

What Is Barley Grass & Why Does Form Matter?

Barley Grass is classified under BOTANICALS and has been investigated across 17 peer-reviewed PubMed publications for its role in phytochemical receptor modulation, adaptogenic stress response, and vascular/inflammatory pathways.

In clinical nutrition, physiological efficacy depends heavily on the specific chemical salt, chelate, or standardized extract used, as well as adherence to trial-validated dosing (100 g, 112 mg, 15 g/day).

02

Who Benefits Most & Common Depletion Factors

Suboptimal status or increased physiological demand for Barley Grass frequently arises from restrictive dietary patterns, age-related declines in gastrointestinal absorption, chronic metabolic stress, or medication-induced nutrient depletion.

Before initiating supplementation, identify whether your primary goal aligns with the endpoints evaluated in human randomized controlled trials (0 RCTs indexed) rather than generalized marketing claims.

03

Physiological Mechanism of Action

Within human physiology, Barley Grass acts on pathways governing phytochemical receptor modulation, adaptogenic stress response, and vascular/inflammatory pathways. Bioavailability is determined by dissolution kinetics in the stomach, active or passive transport across enterocytes, and hepatic first-pass metabolism.

Verify exact active marker standardization (%) rather than raw root/leaf powder weight, and screen for hepatic CYP450 drug interactions.

04

PubMed Clinical Evidence & GRADE Evaluation

NICEVIVA assigns Barley Grass an overall evidence rating of GRADE Low (2.0 / 4.0) based on 17 PubMed studies: 0 meta-analyses, 0 systematic reviews, and 0 randomized controlled trials (0 double-blind, n = 12 total participants).

Representative peer-reviewed findings include: • PMID:41761860 (2026) — "Palliative Effects of Phenolic, Polysaccharide, and Lipid Extracts of Hulless Barley Grass on Acute Ulcerative Colitis." (Both polysaccharide and lipid extracts led to little reduction in the colon inflammatory condition.) • PMID:41542742 (2026) — "Soluble Dietary Fiber From Hulless Barley Grass Ameliorates High-Fat Diet-Induced Obesity by Increasing Hepatic Glycogen Content." (The results showed that SDF intervention could ameliorate obesity-related symptoms, as evidenced by the fact that different doses of SDF reduced HFD-induced weight gain and hyperlipidemia, lowered serum aspartate aminotransferase and alanine aminotransferase levels, ameliorated i) • PMID:41375305 (2025) — "Nutrient Removal and Oxidative Response of Barley to Eutrophic Stress." (Nutrient removal analysis showed that N removal efficiency was highest under NP 70 + 7 (53.4%), whereas P removal decreased consistently with rising concentrations.)

05

Formulation Selection, Dosing & Chronobiology

Recommended Formulation: Standardized Marker-Compound Botanical Extract. Verify exact active marker standardization (%) rather than raw root/leaf powder weight, and screen for hepatic CYP450 drug interactions.

Clinical Trial Dosing & Timing: Published studies most commonly utilize 100 g · 112 mg · 15 g/day · 1.5 g over 4 weeks · 16 weeks · 14 days. Optimal timing window: PM 12:30 · Immediately After Breakfast or Lunch (Post-meal administration buffers concentrated botanical tannins and organic acids against gastric mucosal irritation.).

06

Body Response Monitoring & Dose Adjustment

Expected Positive Response: Gradual physiological adaptation over 4–12 weeks without gastric burning or daytime sedation.

Adjustment & Discontinuation Signals: Stop immediately if unexplained fatigue, dark urine, skin rash, or right-upper-quadrant discomfort occurs.

07

Prescription Drug Interactions & Contraindications

No major high-risk prescription contraindications are flagged in the primary index for Barley Grass, but divalent minerals, fat-soluble compounds, and botanical extracts can still alter absorption or CYP450 metabolism of concurrent medications.

Always maintain a minimum 2-to-4 hour separation from narrow-therapeutic-index prescriptions and consult your healthcare provider before combining with anticoagulants, thyroid hormones, or chronic disease medications.

08

4 Essential Safety Rules Before & After Dosing

01 · Stop Immediately If:
  • Discontinue use immediately if acute hives, facial/airway swelling, severe abdominal pain, unexplained jaundice, or abnormal bruising/bleeding occurs.
  • Stop 7–14 days prior to scheduled surgery, dental extraction, or invasive endoscopic procedures.
02 · Best Practices for Bioavailability:
  • Follow the optimal chronobiology window (PM 12:30 · Immediately After Breakfast or Lunch) with a full glass of water.
  • Stay within clinically studied daily dosages (100 g · 112 mg · 15 g/day) and re-evaluate efficacy after 4 weeks.
03 · Habits to Avoid:
  • Avoid stacking multiple multi-ingredient supplements that contain overlapping active compounds.
  • Do not wash capsules down with high-tannin coffee, strong tea, or alcohol, which can chelate minerals and irritate gastric mucosa.
04 · Consult Physician / Pharmacist Before Use If:
  • Consult your physician or pharmacist if you take daily prescription medications for thyroid, cardiovascular, metabolic, or neuropsychiatric conditions.
  • Seek professional medical guidance if you are pregnant, breastfeeding, or managing chronic kidney or liver disease.
09 · PUBMED CLINICAL STUDIES

Indexed PubMed Clinical Studies & Abstracts (17 Studies) · 2 Quantitative Analyses

01
CLINICAL STUDY Molecular nutrition & food research (2026) PMID: 41761860 ↗
Palliative Effects of Phenolic, Polysaccharide, and Lipid Extracts of Hulless Barley Grass on Acute Ulcerative Colitis.
Clinical Trial Synthesis 2026 Clinical Study published in Molecular nutrition & food research. Key conclusion: Both polysaccharide and lipid extracts led to little reduction in the colon inflammatory condition.
View Original PubMed Abstract ↓

Hulless barley grass (HBG) is rich in bioactive compounds such as phenolics, polysaccharides, and lipids, and consequently possesses antioxidant, anti-inflammatory, and anti-tumor properties. However, which components contribute to its potential palliative effect on acute ulcerative colitis (AUC) is unknown. In this study, phenolics, polysaccharides, and lipids were extracted separately from HBG, and their antioxidant activities and effects on AUC in vivo were investigated. Compared to the polysaccharide/lipid extracts, phenolic extracts (HBGPE) had much higher antioxidant capacity, with 1,1-diphenyl-2-picrylhydrazyl radical (DPPH·) scavenging capacity of 1.34 ± 0.02 mmol Trolox/100 g. The HBGPE also significantly decreased the body weight loss and colonic condition of dextran sodium sulfate (DSS)-induced AUC mice. The strong anti-inflammatory effects of HBGPE led to a significant reduction in the degree of inflammatory cell infiltration, crypt structure disruption, and mucosal damage, and down-regulated the mRNA expression of tumor necrosis factor (Tnfα), interleukin-6 (Il6), and Il1b. In addition, HBGPE could reduce intestinal flora disorders. Both polysaccharide and lipid extracts led to little reduction in the colon inflammatory condition. This study confirmed that HBG extracts could inhibit inflammatory response, oxidative stress, and gut microbial imbalance, especially HBGPE, which indicated that HBG may have potential for application in dietary prevention of AUC. © 2026 Wiley‐VCH GmbH.

02
CLINICAL STUDY Journal of food science (2026) PMID: 41542742 ↗
Soluble Dietary Fiber From Hulless Barley Grass Ameliorates High-Fat Diet-Induced Obesity by Increasing Hepatic Glycogen Content.
Clinical Trial Synthesis 2026 Clinical Study published in Journal of food science. Key conclusion: The results showed that SDF intervention could ameliorate obesity-related symptoms, as evidenced by the fact that different doses of SDF reduced HFD-induced weight gain and hyperlipidemia, lowered serum aspartate aminotransferase and alanine aminotransferase levels, ameliorated i
View Original PubMed Abstract ↓

Obesity and its related metabolic complications have become a major public health crisis of the 21st century, but may be reduced through increased dietary fiber intake. Hulless barley grass (HBG) contains abundant dietary fiber; however, it is currently unclear whether this dietary fiber is effective in reducing obesity. In the present study, soluble dietary fiber (SDF) in HBG was intervened for 4 weeks in rats fed a high-fat diet (HFD). The results showed that SDF intervention could ameliorate obesity-related symptoms, as evidenced by the fact that different doses of SDF reduced HFD-induced weight gain and hyperlipidemia, lowered serum aspartate aminotransferase and alanine aminotransferase levels, ameliorated insulin resistance, and increased hepatic glycogen content. In summary, this study is important for the utilization of HBG and highlights the potential of SDF in HBG as a functional food for dietary management of obesity. © 2026 Institute of Food Technologists.

03
CLINICAL STUDY Plants (Basel, Switzerland) (2025) PMID: 41375305 ↗
Nutrient Removal and Oxidative Response of Barley to Eutrophic Stress.
Clinical Trial Synthesis 2025 Clinical Study published in Plants (Basel, Switzerland). Key conclusion: Nutrient removal analysis showed that N removal efficiency was highest under NP 70 + 7 (53.4%), whereas P removal decreased consistently with rising concentrations.
View Original PubMed Abstract ↓

Eutrophication caused by excessive nitrogen (N) and phosphorus (P) inputs threatens aquatic ecosystems and requires sustainable solutions. Barley (Hordeum vulgare L.) is a fast-growing forage crop with potential for removing nutrients in eutrophic waters; however, a comprehensive understanding of its physiological responses across a wide gradient of concurrent N and P levels is still developing. To investigate this, a 7-day hydroponic experiment was conducted: six N + P enrichment levels, control (0), 70 + 7, 140 + 14, 280 + 28, 560 + 56, and 1120 + 112 mg·L-1 of total N and P (TN:TP fixed at 10:1), were prepared in hydroponic culture and their effect on seed germination, growth, nutritional quality, photosynthetic pigments, antioxidant activity, and nutrient removal efficiency were studied. Results showed that early germination was inhibited under nutrients and enriched conditions, but this recovered by day 3. A moderate nutrient supply (NP 70 + 7) promoted seedling growth, resulting in maximum plant height, fresh weight, crude protein (6.6%), ether extract (6.1%), and chlorophyll a (10.9%) compared to the control. Root growth was best in control, while high nutrient stress (NP 1120 + 112) led to the highest mortality (23.5%). This mortality was linked to a severe suppression of the enzymatic antioxidant system (SOD, POD, and CAT), indicating a collapse of primary oxidative defense under extreme stress. Nutritional quality improved under NP 140 + 14, which yielded the lowest NDF and ADF and the highest chlorophyll b (15%) and glutathione content (14.9%). Antioxidant enzymes (SOD, POD, and CAT) were most active in the control and declined with increasing N + P levels, while glutathione peaked under NP 140 + 14. This indicates a potential shift in the plant's defense strategy, where glutathione plays a key role in mediating tolerance to moderate eutrophic stress. Nutrient removal analysis showed that N removal efficiency was highest under NP 70 + 7 (53.4%), whereas P removal decreased consistently with rising concentrations. Overall, barley grass seedlings tolerated N + P levels up to NP 280 + 28 while maintaining growth and nutrient uptake, a resilience facilita

04
CLINICAL STUDY Journal of food science (2025) PMID: 41246861 ↗
Phenolic Extracts of Hulless Barley Grass Alleviate Progression of Colitis-Related Colorectal Cancer by Inhibiting the Overexpression of Wnt/β-Catenin Signaling Pathway.
Clinical Trial Synthesis 2025 Clinical Study published in Journal of food science. Key conclusion: By significantly reducing pro-inflammatory cytokines and suppressing aberrant initiation of the Wnt/β-catenin signaling pathway, these extracts may alleviate chronic intestinal inflammation.
View Original PubMed Abstract ↓

Ulcerative colitis (UC), a precursor of colorectal cancer (CRC) driven by Wnt/β-Catenin pathway activation, may be mitigated by hulless barley grass (HBG), a high-altitude crop with antioxidant, anti-inflammatory, and anti-tumor effects. A previous study found that HBG had palliative effects on UC. The effects and mechanism of HBG phenolic (PE), polysaccharide (PSE), and lipid extracts (LE) on UC associated CRC were investigated by establishing an azoxymethane (AOM)/dextran sodium sulfate (DSS)-induced CRC mice model. Compared to CRC mice, the PE group (600 mg/kg/d) exhibited a 41.4% decrease in tumor numbers and a 16.5% decrease in the proportion of tumors more than 2 mm in size. In addition, PE effectively alleviated the expression of pro-inflammatory cytokines, including tumor necrosis factor-α (Tnfα), interleukin-6 (Il6), and Il1β, and genes associated with tumorigenesis (prostaglandin-endoperoxide synthase 2 (Ptgs2), epidermal growth factor receptor (Egfr), and nitric oxide synthase 2 (Nos2), and increased the diversity and abundance of intestinal flora. Quercetin-3-O-(2″,6″-α-L-dirhamnopyranosyl)-β-D-galactopyranoside, Quercetin-3-O-β-D-rutinoside, and Baicalin-7-diglucoside were identified as the main components of PE. Furthermore, PE downregulated β-Catenin (Ctnnb1) from 4.81 to 1.46 fold change, Myc from 4.27 to 1.62 (fold), and Cyclin D1 (Ccnd1) from 5.43 to 2.35 fold. Both PSE (400 mg/kg/d) and LE (200 mg/kg/d) significantly decreased Tnfα and Il6 mRNA expression, and no significant difference in Ptgs2 and Egfr was observed between the PSE and LE groups and the model group. These findings indicated that PE had the potential to treat CRC, providing a preventive strategy for UC associated CRC. PRACTICAL APPLICATIONS: This research indicates that phenolic extracts from hulless barley grass have potential for development as natural dietary supplements or functional food ingredients aimed at preventing colitis-associated colorectal cancer. By significantly reducing pro-inflammatory cytokines and suppressing aberrant initiation of the Wnt/β-catenin signaling pathway, these extracts may alleviate chronic intestinal inflammation. In addition, they contribute

05
CLINICAL STUDY The Journal of dairy research (2025) PMID: 40959966 ↗
The effects of a product of the solid-state fermentation of Aspergillus niger on in sacco degradation of feeds and rumen volatile fatty acid production in dairy cattle.
Clinical Trial Synthesis 2025 Clinical Study published in The Journal of dairy research. Key conclusion: Treatments had no significant effect on the rate, or extent, of degradation of any component in any feed investigated.
View Original PubMed Abstract ↓

This Research Paper addresses the hypothesis that the dietary inclusion of an Aspergillus niger fermentation product will alter the degradation kinetics and rumen fermentation patterns of feeds in dairy cattle. Fungal fermentation products often contain a suite of bioactive compounds and secondary metabolites, which can influence the microbial environment in the rumen and act as digestibility enhancers. As the cattle sector is under increasing pressure to enhance its sustainability, the investigation of dietary interventions that could improve the efficiency of production is warranted. In a previous experiment, Synergen®, a product of the solid-state fermentation of Aspergillus niger (ANP) containing residual enzyme activities, significantly increased the in vitro digestibility of a grass silage-based dairy total mixed ration (TMR), suggesting that in vivo studies would be valuable. Hence the present study aimed to quantify the effects of this ANP on rumen fermentation measures in cattle. Using a 4 × 4 Latin square design, the effect of four doses of ANP (0, 5, 10, 15 g/day) in four cannulated Jersey heifers was measured on the in sacco degradation of dry matter (DM), organic matter, crude protein and neutral detergent fibre in steam-flaked barley, grass silage and a grass silage-based TMR formulated for dairy cattle. Treatments had no significant effect on the rate, or extent, of degradation of any component in any feed investigated. Rumen volatile fatty acid concentrations and proportions, and rumen pH, were quantified at seven timepoints during each 48-h sampling period and were unaffected by treatment, as was the apparent total tract digestibility of DM. Under the conditions of this trial, ANP did not influence rumen fermentation kinetics; indicating that supplementing mature, non-lactating Jersey cattle with this fungal fermentation product is not an advantageous strategy to enhance feed digestibility.

06
CLINICAL STUDY Foods (Basel, Switzerland) (2025) PMID: 40428442 ↗
Effects of Spray-Drying Conditions on the Functional and Physicochemical Properties of Young Barley Grass Juice Powders.
Clinical Trial Synthesis 2025 Clinical Study published in Foods (Basel, Switzerland). Key conclusion: This paper aimed to analyze the possibility of producing young barley leaf juice with improved properties.
View Original PubMed Abstract ↓

Young barley leaves have been proven to distinguish themselves as highly potent in antioxidant activity, resulting from a high content of bioactive compounds. Due to their short storage time, it is crucial to prolong their shelf life. One of the methods that can be used is spray-drying, as it enables the production of powders that are highly valued in the food industry. This paper aimed to analyze the possibility of producing young barley leaf juice with improved properties. Juices were spray-dried with and without carriers at 100/60 °C inlet/outlet temperature using air of 1.5 g/m3 humidity as the drying medium. Maltodextrin (MD), Nutriose® (N), and Arabic gum (AG) were used in a ratio 1:3 carrier/juice solids. The results proved that dehumidified air application enabled the production of young barley leaf juice powder, that was free of the carriers, of high retention coefficient (RC) of chlorophyll A and B (80.84 ± 6.56% and 87.05 ± 5.21%, respectively). No statistical difference was noted between variants with maltodextrin (chlorophyll A: 91.22 ± 5.07%, chlorophyll B: 71.72 ± 5.44%), Nutriose® (chlorophyll A: 72.24 ± 5.32%, chlorophyll B: 67.04 ± 12.41%), and carrier-free powder; thus, the elimination of a carrier can be considered to effectively produce a "clean" label, functional product. The highest degradation among the tested bioactive compounds was noted for vitamin C.

07
CLINICAL STUDY Pest management science (2025) PMID: 39697148 ↗
Intensive cropping influences the success of seed dormancy breaking methods in Australian collected Hordeum, Avena, and Bromus sp.
Clinical Trial Synthesis 2025 Clinical Study published in Pest management science. Key conclusion: Techniques such as tillage, which incorporate seeds deeper into the soil, may help mitigate seed dormancy traits by reducing light exposure.
View Original PubMed Abstract ↓

BACKGROUND: Seed dormancy is a critical evolutionary trait that enhances the persistence of plant populations under both natural and managed conditions. It is influenced by genetic and environmental factors, with crop management practices like tillage and herbicide use reportedly selecting for increased seed dormancy in weeds. This study aimed to compare the success of seed dormancy breaking methods between weed populations collected from intensively managed crop fields and unmanaged ruderal locations. RESULTS: Weeds from intensively managed fields, including Hordeum glaucum, H. leporinum, Avena fatua, Bromus diandrus, and B. rigidus exhibited significantly higher seed dormancy and didn't respond largely to seed dormancy breaking methods compared to those from unmanaged areas. Dormancy-breaking treatments such as sandpaper scarification were effective in barley grass, while endosperm excision followed by cold stratification alleviated dormancy in brome grass and wild oat. Dark incubation consistently improved germination across all species, enhancing the efficacy of treatments like cold stratification, sandpaper scarification, and gibberellic acid (GA3). CONCLUSION: Weeds in managed fields develop greater seed dormancy, likely as an adaptive response to agricultural practices. Techniques such as tillage, which incorporate seeds deeper into the soil, may help mitigate seed dormancy traits by reducing light exposure. These findings highlight the importance of dormancy management in controlling persistent weed populations. © 2024 Society of Chemical Industry. © 2024 Society of Chemical Industry.

08
CLINICAL STUDY Heliyon (2024) PMID: 39640645 ↗
Barley a nutritional powerhouse for gut health and chronic disease defense.
Clinical Trial Synthesis 2024 Clinical Study published in Heliyon. Key conclusion: CONCLUSION: This review underscores the therapeutic potential of barley and its components in chronic disease management, highlighting the need for well-designed clinical trials to translate these findings into effective interventions.
View Original PubMed Abstract ↓

BACKGROUND: Digestive issues are recognized as significant contributors to various chronic diseases, including obesity, diabetes, and cardiovascular disease. Barley, a traditional grain, offers considerable promise in addressing these health challenges due to unique nutritional and bioactive compounds. OBJECTIVE: This review examines the therapeutic potential of various parts of barley, underutilized resource, for chronic disease prevention and management. METHOD: ology: A comprehensive literature search was conducted across multiple databases like Google Scholar, PubMed, and ISI Web of Science, to identify nutritional components and functional ingredients in barley that contribute to gut health and chronic disease mitigation. RESULTS: The finding suggests that humans digest barley starch more slowly than wheat and rice, which benefits chronic disease management. Barley's high-molecular-weight β-glucan high content acts as a prebiotic, promotes gut health through microbiome modulation and short-chain fatty acid production, potentially preventing colon cancer and boosting immunity. Recent studies on exploring barley grass of high land showed functional ingredients such as flavonoids, saponarin lutonarin, superoxide dismutase, gamma-aminobutyric acid, polyphenols K, Ca, Se, tryptophan chlorophyll, and vitamins, suggesting potential for enhanced antioxidant activity and improved management of chronic conditions like diabetes, cholesterol, hypertension, cardiovascular health, liver protection, and even boosted immunity. CONCLUSION: This review underscores the therapeutic potential of barley and its components in chronic disease management, highlighting the need for well-designed clinical trials to translate these findings into effective interventions. © 2024 The Authors.

09
CLINICAL STUDY Journal of environmental management (2024) PMID: 39383761 ↗
Enhanced phytoremediation of vanadium using coffee grounds and fast-growing plants: Integrating machine learning for predictive modeling.
Clinical Trial Synthesis 2024 Clinical Study published in Journal of environmental management. Key conclusion: The addition of coffee grounds not only mitigated the stress of heavy metals on ryegrass, leading to significant reductions in CAT (87.2%), POD (98.8%), and SOD (39.2%) activities in ryegrass roots, but also significantly altered the microbial community abundance in the plant roo
View Original PubMed Abstract ↓

Vanadium (V) contamination posed a significant environmental challenge, while phytoremediation offered a sustainable solution. Phytoremediation performance was often limited by the slow growth cycles of traditional plants. A novel approach to enhancing V phytoremediation by integrating coffee grounds with fast-growing plants such as barley grass, wheat grass, and ryegrass was investigated in this study. The innovative use of coffee grounds leveraged not only their nutrient-rich composition but also their ability to reduce oxidative stress in plants, thereby significantly boosting phytoremediation efficiency. Notably, ryegrass achieved 48.7% V5+ removal within 6 d with initial 20 mg/L V5+ (0.338 mg/L·d·g ryegrass). When combined with coffee grounds, V5+ removal by using wheat grass increased substantially, rising from 30.51% to 62.91%. Gradient Boosting and XGBoost models, trained with optimized parameters including a learning rate of 0.1, max depth of 3, and n_estimators of 300, were employed to predict and optimize V5+ concentrations in the phytoremediation process. These models were evaluated using mean squared error (MSE) and coefficient of determination (R2) metrics, achieving high predictive accuracy (R2 = 0.95, MSE = 1.20). Feature importance analysis further identified the initial V5+ concentration and experimental duration as the most significant factors influencing the model's predictions. The addition of coffee grounds not only mitigated the stress of heavy metals on ryegrass, leading to significant reductions in CAT (87.2%), POD (98.8%), and SOD (39.2%) activities in ryegrass roots, but also significantly altered the microbial community abundance in the plant roots. This research provided an innovative enhancement to traditional phytoremediation methods, and established a new paradigm for using machine learning to predict and optimize V5+ remediation outcomes. The effectiveness of this technology in multi-metal polluted environments warrants further investigation in the future.

10
CLINICAL STUDY Biologia futura (2024) PMID: 38967876 ↗
Investigation of in vitro biological activity of young Hordeum vulgare leaf in correlation with its bioactive compounds.
Clinical Trial Synthesis 2024 Clinical Study published in Biologia futura. Key conclusion: vulgare, hence enhancing its pharmacological activity.
View Original PubMed Abstract ↓

Young shoots of cereals are widely regarded as superfoods with health benefits attributed to their potential antioxidant activity and antioxidant-related effects (e.g. anticancer). The current study aimed to examine the chemical characteristics of Hordeum vulgare methanolic and aqueous extracts and assess their antioxidant activity using the DDPH and ORAC. Furthermore, the inhibitory effect of xanthine oxidase was screened. TLC bioautography was employed to determine the polarity of the compounds present in the extracts that exhibited the most potent free radical scavenging activity. Total flavonoid content of the methanolic and aqueous extracts was 0.14 mg QE/g and 0.012 mg QE/g, respectively. The antioxidant activity of the methanolic extract was found to be more potent, with a value of 0.97 ± 0.13 mmol TE/g than the aqueous extract which had no activity. This study presents novel findings on the xanthine inhibitory activity of H. vulgare. The methanolic extract demonstrated moderate inhibition of xanthine oxidase with a value of 23.24%. The results of our study were compared with the phytochemical and pharmacological analysis of Triticum aestivum, and further comparison was made with the data reported in the literature. Inconsistencies were observed in the chemical and pharmacological properties of H. vulgare, which could be a result of using herbal material harvested in different vegetative phases and various methods used for extraction. The findings of our study indicate that the timing of the harvest and extraction method may play crucial role in attaining the optimal phytochemical composition of H. vulgare, hence enhancing its pharmacological activity. © 2024. The Author(s).

RELATED MONOGRAPHS

Related Monographs in This Category