Spray Forming Research Articles

Effect of cryogenic and room-temperature rolling on the microstructural evolution and mechanical behavior of spray-formed 7055 Al-Zn-Mg-Cu alloy

This study investigates the effects of room-temperature rolling (RTR) and cryogenic rolling (CR) on the microstructure, mechanical properties, and fracture morphology of spray-formed (SF) 7055 Al-Zn-Mg-Cu alloy, with a focus on the deformation across reductions ranging from 20 % to 80 %. Utilizing SF as the base processing technique, the study aims to overcome challenges associated with the alloy's high content during conventional casting, such as segregation, grain coarsening, and the formation of internal defects. The findings indicate that CR significantly enhances the ductility and refines the microstructure of SF-7055 Al alloy compared to RTR, particularly at higher reductions. CR prevents the formation of severe cracks and maintains higher ductility and texture intensity, which are crucial for the demanding applications of this alloy in aerospace and transportation sectors. Microstructural analysis reveals that CR achieves a more uniform deformation, effectively reduces shear band formation, and facilitates the formation of finer and more evenly distributed precipitates due to suppressed solute atom mobility at cryogenic temperatures. Mechanical testing shows that CR enhances strength and hardness at lower reductions by maintaining high dislocation density, which does not annihilate as rapidly as in RTR. Tensile fracture analysis further demonstrates that CR leads to smoother fracture surfaces and fewer macroscopic cracks, indicating a more controlled failure mechanism. This study underscores the potential of cryogenic processing in improving the performance and applicability of high-strength Al alloys, offering significant insights for industrial applications where material reliability and enhanced mechanical properties are critical.

Design and development of a poly- herbal spray formulation and its physicochemical and biological profiling: from classic to modern drug delivery system

Design and development of a poly- herbal spray formulation and its physicochemical and biological profiling: from classic to modern drug delivery system

Treatment of anal fissures using the new TRPM8 receptor therapy - own experience.

<b>Introduction:</b> Anal fissure, a longitudinal or oval crack in the anal anoderm above the dentate line, is one of the most common diseases of the anal area. The following article shows the effectiveness of anal fissure treatment based on our own experience, using new receptor therapy in the form of Procto-Zac Memethol Barrier Spray [(1R,2S,5R)-2-isopropyl-5-methylcyclohexanol, sodium hydrogen carbonate, 7-(dimethylamino) phenothiazin-3-ylidene]- dimethylazanium; chloride, 1,2-propanediol, purified water], preparation containing soluble fiber and oral probiotic.<b>Aim:</b> The aim of the following article is to present our experience and observations in the conservative treatment of acute and chronic anal fissure using Procto-Zac Memethol Barrier Spray and preparations containing soluble fiber and oral probiotic.<b>Material and methods:</b> The study included a group of 120 patients with anal fissure between 18 and 45 years of age. Each patient in the group received a therapy consisting of Procto-Zac Memethol Barrier Spray (8 sprays once a day, 2 packages) and preparation containing fiber and oral probiotic. A high-fiber, gluten-free and lactose-free diet was also recommended. A follow-up was carried out in our clinic after 4 and 8 weeks. If the symptoms do not disappear completely, also after 3 months from the start of treatment.<b>Results:</b> Complete relief of symptoms was achieved in 62 patients after 4 weeks of treatment. After 8 weeks, complete relief of symptoms was achieved in another 49 people. In 6 people, after 3 months of treatment, the symptoms were partially relieved, but the anal fissure was not completely healed. Three people did not come for a follow-up visit. In 20 patients, skin burning around the anus was observed during the above therapy.The above symptoms did not require discontinuation of Procto-Zac Memethol Barrier Spray therapy and disappeared after completion of treatment. No other side effects of the preparations used were found.<b>Conclusions:</b> According to our observations, the use of new TRPM8 receptor therapy MemeThol Barrier Spray, a preparation containing soluble fiber and oral probiotic, turned out to be an effective method of treating anal fissure. In the future, it is advisable to conduct further studies, including multicenter studies, to assess the full tolerability and effectiveness of the described therapy.

Multiscale Simulation of Droplets In-flight Solidification Behavior During Spray Forming

Multiscale Simulation of Droplets In-flight Solidification Behavior During Spray Forming

Basil essential oil-incorporated bacterial nanocellulose foam: Fabrication, characterization, and application in extending ground beef shelf life

Bacterial nanocellulose (BNC) is a sustainable antimicrobial material for food packaging. To enhance its antimicrobial properties, basil (Ocimum basilicum L.) essential oil (BEO) was incorporated into the BNC porous foam. A spray method was used with low BEO concentrations (1 and 2 μL/cm2) based on foam surface to optimize BEO usage while maintaining its antimicrobial effectiveness. BNC was synthesized using Komagataeibacter xylinus. The minimum inhibitory concentrations were 128 and 64 μg/mL for Pseudomonas aeruginosa and Listeria monocytogenes, respectively, demonstrating greater sensitivity of Gram-positive bacteria compared to Gram-negative bacteria. The use of BEO in spray form increased the antimicrobial and antioxidant activities (as measured by DPPH and ABTS methods) of foams. The absorption bands related to BEO in Fourier transform infrared spectroscopy analysis of the BNC-BEO foam confirmed the incorporation of BEO into the BNC foam. Impregnation with BEO at 1 and 2 μL/cm2 significantly increased the water contact angle to 31.62° and 33.19°, respectively, thereby enhancing the hydrophobicity of the foam, but reduced the mechanical strength of the BNC-BEO foams. Foams were used in active packaging of ground beef to improve shelf life by controlling microbial and oxidative processes. The BNC-BEO foam showed a slower microbial growth rate, with bacterial populations about 1–2 log₁₀ CFU/g lower than control. Meat samples packaged with BNC-BEO foams scored higher in terms of taste and odor. A significantly lower amount of BEO was used in the foam form of BNC, which is favorable for improving sensory parameters. Therefore, BNC-BEO can be applied to the active packaging of meat.

Enhancing pest management - Utilizing supplementary food spray to harness predatory insects against fall armyworm in maize crop of Vinh Phuc Province, Vietnam

The effect of supplementary food spray on the fall armyworm (Spodoptera frugiperda) and beneficial insects (predominantly predatory insects) was studied in commercial maize field experiments from 2020 to 2022. The food spray formulation was developed from local ingredients in Vietnam, both with and without neem extract. The sugar-based rice dough product attracted and sustained beneficial insects, significantly reducing fall armyworm populations. Compared to conventional insecticide treatments, the net margin achieved in plots treated with food spray was higher ($3,467) to $3,394 in the conventional insecticide-treated plots demonstrating its economic viability (1 AUD=17.28 VND). Our study observed an average predator-to-prey ratio of 9.2:1 per plant in the food-spray-treated plots, and that was effective in managing the fall armyworm throughout the season. We propose that this ratio can serve as a valuable parameter and decisionmaking tool in food spray-based Integrated Pest Management (IPM) programs against fall armyworm in maize fields. Therefore, we suggest that food sprays can be incorporated into IPM strategies to successfully manage fall armyworm infestation in maize crop.

A case study on the management of Prathishyaya (Chronic Allergic Rhinitis) using Bharangi Arka Nasal Spray

The omnipresence of Prathishyaya among school-aged groups is overlooked until the complications like kasa, swasa and rajayakshma come into being. Pratishyaya if taken heed of in the initial stage, helps to frustrate the looming effects of its complications. Bharangi Arka is cited as an effectual remedy for Prathishyaya in the Arka Prakasha of Ravana. Prescribing medications for children is usually challenging as they often resist taking them and so, Ayurveda formulations when transmuted into more palatable forms can have salutary impacts on children than classical forms. This case study was carried out on an 8 ½ years old male child with sneezing, runny nose and chronic symptoms including nasal itching and obstruction in particular. Prathishyaya was diagnosed after a proper clinical evaluation. Bharangi Arka in the form of nasal spray was opted as the sole drug in the treatment. Assessment of symptoms was done using Total Nasal Symptom score on the 7th, 14th, 21st and 28th days of the first month of the treatment and at the end of the following two months. Subsidence of all the symptoms was observed in the patient almost in the 4th week. This corroborates the stupendous action of Bharangi Arka nasal spray on Pratishyaya and it could usher in a way for further research to be carried out on the potency of nasal sprays in Ayurveda.

The Optejet Technology Minimizes Preservative-Mediated Cytotoxicity of Conjunctival Epithelial Cells Treated with Latanoprost In Vitro.

Purpose: Benzalkonium chloride (BAK) is a commonly used preservative to maintain sterility for multiuse eye drops such as latanoprost. One option to minimize the deleterious effects of BAK in eye drops may be to reduce the volume administered. The aim of this study was to assess the response of cells from the ocular surface to latanoprost+BAK administered by the Optejet technology, which dispenses a microdose (∼8 µL) ophthalmical spray. Methods: Cultured human conjunctival epithelial cells were exposed to the following treatments: (1) no treatment, (2) drop form of latanoprost without BAK (∼35 µL), (3) drop form of latanoprost with 0.01% BAK (∼35 µL), (4) ophthalmical spray form of latanoprost with 0.01% BAK delivered by the Optejet technology (∼8 µL). After 5 h, cells were assessed for changes in cytotoxicity, morphology, and inflammatory marker expression. Results: Latanoprost+BAK delivered by a drop induced cytotoxicity, cytoplasmic shrinkage, and loss of cell-cell contact, and expression of chemokine (C-C motif) ligand 2 and interleukin-6. In contrast, latanoprost+BAK delivered by the Optejet technology was both well tolerated and similar to no treatment controls and BAK-free latanoprost treatment. Conclusions: A microdose of latanoprost+BAK ophthalmical spray administered with the Optejet technology prevented the cytotoxicity associated with larger volumes found in eye drops. Precision dosing by the Optejet technology has the potential to decrease ocular surface disorder typically associated with eye drops containing preservatives.

Achieving high strength and ductility of Al-Zn-Mg-Cu alloys via laser shock peening and spray forming

In order to further enhance the strength and ductility of ultra-high strength aluminum alloys, the laser shock peening technology was applied to ultra-high strength Al-Zn-Mg-Cu alloy. The ultimate tensile strength, elongation and hardness can reach to 751 MPa, 11 % and 208.3 HV by combining spray forming, secondary extrusion, solid solution, retrogression and reaging as well as laser shock peening. The high strength and hardness of the alloys is mainly attributed to the fine-grained layer on surface as well as new grain boundaries, dislocation cells and high-density dislocations introduced by laser shock peening, uniform nano-sized strengthening phases with high density precipitated during heat treatments. The excellent ductility of the alloys is mainly ascribed to multiple structures including fine-grained layer on surface and slip lines inside different grains introduced by laser shock peening, smaller size of fibrous grains and Al7Cu2Fe phase produced by secondary extrusion and spray forming. The aging treatment after laser shock peening can lead to the annihilation of high-density dislocations as well as significantly promote the formation of stable and coarse η phase, which can greatly reduce the strength of the studied alloys.

Role of In Vitro Tests in the Characterisation of Locally Applied, Locally Acting Drugs in the Throat: Application to Flurbiprofen.

Background/Objectives: For locally applied, locally acting generic drug products, comparison to an originator product based on systemic exposure is usually not feasible due to low plasma concentrations and inadequate reflection of local exposure at the site of action. Where a validated PD model exists, a comparative clinical study can be performed in healthy subjects; where no surrogate endpoint is available, patients with the relevant indication need to be enrolled, with all the associated factors which could result in lack of sensitivity. Even though the need for alternative in vitro approaches has been acknowledged by both industry and regulatory bodies, the complexity of in vivo drug delivery processes makes the development of guidance documents particularly difficult. Our objective was to present in vitro approaches less classically used and to address in vivo relevance of the selected tests. Methods: This article analyses current regulatory approaches in Europe and the U.S., and highlights the key advantages of in vitro tests in terms of their sensitivity, reliability, reproducibility and in vivo relevance using locally applied flurbiprofen in various formulations. Results: The in vitro esophageal retention (IVOR) model demonstrates that the first 6-10 min after application of different flurbiprofen formulations is important for their comparison and also offers the best correlation with in vivo data using the partial area under the concentration-time curves (pAUCs). Rheological evaluations further demonstrated that the mucoadhesive properties of the gel spray formulation are based on interaction with mucin. Conclusions: Designing a relevant in vitro test requires adequate evaluation of the complexity of the drug substance, drug product, dosing conditions and delivery processes.

Development and Evaluation of Oromucosal Spray Formulation Containing Plant-Derived Compounds for the Treatment of Infectious and Inflammatory Diseases of the Oral Cavity.

According to data in the literature, natural products and essential oils are often used in dental practice. To develop a new oromucosal spray for the treatment of infectious and inflammatory diseases of the oral cavity, clove CO2 extract and essential oils of lavender and grapefruit were used as active pharmaceutical ingredients. Clove extract was obtained by the method of subcritical extraction from various raw materials, the choice of which was based on the yield of the CO2 extract and the study of its phytochemical and microbiological properties. Based on the results of microscopic and diffraction analyses, the rational time of ultrasonic exposure for the emulsion of active pharmaceutical ingredients was established. Mucoadhesive polymers were used as stabilizers of the two-phase system and prolongators. This article discusses the impact of the type and concentration of mucoadhesive polymers on the stability of the emulsion system; the viscous, textural, adhesive, and film characteristics of oromucosal spray; and the parameters determining sprayability.

Preparation Pharmaceutical Formulation of Sulphathiazole Nanoparticles in a Spray form for Treatment Fungal and Acterial Skin Infections

The Objective of this research to convert sulfamethoxazole to nano-sulfamethoxazole by Sol-gel method and prepare a pharmaceutical formulation of sulfamethaxazole, prepared at a concentration of 0.25% and in the form of a spray to treat fungal and bacterial infections resulting from wounds of skin, its good for heath. The nano particles characterized by powder X-ray Diffraction (PXRD), atomic force microscope (AFM), Scanning electron microscopy (SEM). The results showed successful that nano sphere sulfamethoxazole and it size between (37-55) nm, all these tests showed different type of nanostructures such as nanotubes and nanoparticles, other biological test MIC & MBC show superior biological activity. The stability of the prepared formula was studied for 6 months under temperature conditions (30, 40) degrees Celsius and relative humidity (70, 75) controlled, which showed the stability and stability of the composition. An experiment was also conducted on laboratory animals (mice) by making a wound in them and treating with the prepared formula with a comparison with the normal non-nanostructure.

HPLC-DAD method validation for quantification of dehydroabietic acid and abietic acid in oral spray containing Pinus merkusii heartwood extract and its antibacterial effects on clinically isolated Streptococcus mutans

AbstractPinus merkusii Jungh & De Vries. has become increasingly gathered more attention from researchers because the plant has a range of folk medicinal uses. Heartwood plant is the major source of dehydroabietic acid (DHAA) and abietic acid (AA), which possesses several medicinal properties, such as antiviral, antimicrobial, antiobesity and anti-inflammatory. The research proposed herein a low-cost, fast, specific, uncomplicated, sensitive, precise reverse-phase high-performance liquid chromatography (RP-HPLC). This method was conducted and validated for evaluating an amount of DHAA and AA in ethanol extract and oral spray containing P. merkusii heartwood extract. Additionally, stability and antimicrobial activities against clinically isolated Streptococcus mutans of the oral spray were determined. The separation was achieved on Pursuit 200Å PFP column, 150 × 4.6 mm, particles of 3 µm with a flow rate of 1.0 mL min−1. Methanol and water (70:30 v/v) were used as eluent with an isocratic mode and sample analysis volume was set at 10 µL, at a detection wavelength of 210 and 245 nm. The developed HPLC method for analysis of DHAA and AA showed good linearity with correlation coefficients equal to 1. Moreover, other validation parameters, comprised of accuracy, precision, specificity and detection and quantitation limits of this method displayed excellent reliability, validity and sensitivity. This method could be an interesting alternative for quantitative measurement of P. merkusii heartwood extract, oral spray formulation and other P. merkusii heartwood extract preparations. The result from antibacterial tests suggested that the oral spray containing P. merkusii heartwood extract is able to inhibit the oral pathogens causing dental caries. The oral spray decreased S. mutans population size by about 0.5–2 Log CFU mL−1 at 1–4 h and complete elimination of all bacteria strains within 24 h. This study provides validity for using P. merkusii heartwood extract as an alternative for preventing and treating oral infectious diseases.

Optimizing Mucoadhesive Film-Forming Spray for Efficient Oral Delivery of Fluconazole in Candidiasis Treatment.

Buccal candidiasis has become increasingly prevalent in recent years, with Candida albicans being the primary causative organism. While systemic fluconazole is an effective treatment, its use is associated with adverse effects such as gastric upset, hepatic failure, and potential drug interactions. Therefore, the development oflocal fluconazole treatment presents a promising solution to these challenges. This study aimed to formulate an efficient local mucoadhesive film-forming spray for the targeted delivery of fluconazole in the treatment of oral candidiasis. The investigation involved the use of three polymers (hyaluronic acid, polyvinyl alcohol, and xanthan gum) both individually and in combination to identify the most effective formulation. Various tests were conducted to characterize 13 formulations prepared using these polymers, including UV-vis spectroscopy, Fourier-transform infrared spectroscopy (FTIR), content assay, drying timeand film formation, viscosity determination, determination of the mucoadhesion strength by turbidimetric methods, drug release study, in-vitro anticandida activity, histological irritation analysis, and stability study. The optimum formula F11, comprised polyvinyl alcohol for its superior mechanical properties and film-forming capabilities, hyaluronic acid, and xanthan gum in combination, exhibiting synergistic mucoadhesive strength. This optimal formulation demonstrated maximum mucoadhesion, rapid film formation, an acceptable spray angle, and controlled release. Furthermore, the optimum formula underwent additional evaluations for in vitro anti-Candida activity, in vivo irritancy assessments, and stability studies, all of which yielded satisfactory results. These findings support the potential of the optimum formula as a straightforward and efficient spray formulation for the treatment of oral candidiasis.

The bioefficacy of a novel VECTRON™ T500 indoor residual spray formulation in an experimental huts trial against Anopheles gambiae s.l. populations

Background: The emergence of insecticide resistance and its spread through populations of malaria vectors has decreased the number of insecticides available for control. Insecticide resistance has been observed in vector populations across sub-Saharan Africa in malaria endemic areas. Therefore, new compounds with different modes of action are needed that can be used in the management of resistance. The current study assessed the bioefficacy of the new indoor residual spray formulation, VECTRON™ T500 against Klypson 500 WG and water against laboratory reared and wild populations of Anopheles gambiae s.l.. The comparative experimental hut trial was implemented between June 2022 and December 2022 to determine the efficacy of VECTRON™ T500, containing the active ingredient (ai) broflanilide as a 50 % wettable powder (WP). The efficacy of VECTRON™ T500 was compared with a positive control, Klypson 500 WG, a wettable granule (WG) formulation that contains 50 % clothianidin. Cement and mud walls were sprayed with VECTRON™ T500, Klypson 500 WG with water sprayed as a negative control. The two insecticides and negative control were evaluated monthly for six months against laboratory and the field-derived An. gambiae s.l. using the standard WHO cone bioassays. Each wall had two cones on each day of testing. VECTRON™ T500 was sprayed on both surface types at a rate of 100mg ai/m2 whilst Klypson 500 WG was applied at a rate of 300 mg ai/m2. For both wall surface types, the vector from the laboratory-reared and the wild populations exhibited a low knockdown effect to both VECTRON™ T500 and Klypson 500 WG. A total of 3,840 mosquitoes were used of which 2,880 (75 %) were susceptible colony of An. gambiae s.s. and 960 (25 %) were wild An. gambiae s.l.. The VECTRON™ T500 induced a mortality of 97.8 %-98.1 % in the laboratory population and 83.2-95.0 % wild population mosquitoes on cement and mud-walled huts respectively while Klypson 500 WG ranged from 89.6-99.0 % for wild and 99.0-99.3 % for the laboratory population mosquitoes on cement and mud walls respectively. The knockdown due to VECTRON™ T500 was 7.08 % in the sixth month, while for Klypson 500 WG was 16.04-17.50 %. The monthly wall cone bioassay mortality with VECTRON™ T500 remained over 80 % for 6 months post-spraying for both laboratory and wild populations. The findings of this study have shown VECTRON™ T500 to have extended efficacy against malaria vector mosquitoes when applied to cement and mud walls. The evaluated new IRS formulation, VECTRON™ T500, performed equally with the positive control, Klypson 500 WG, regarding its impact on vector mortality.

Clinical and economic assessment of using IRS®19 for the treatment and prevention of acute respiratory infections in children

Objective: to perform pharmacoeconomic analysis of the feasibility of using topical bacterial lysate in the form of nasal spray (IRS®19) for the treatment and prevention of upper respiratory tract infections in pediatric population in comparison with other drugs registered in Russia, belonging to the class of topical interferons.Material and methods. Based on the Rosstat data and information from open sources, the population of patients with acute respiratory infections (ARI) was calculated. Considering the Russian clinical recommendations “Acute respiratory viral infection (ARVI)” and “Acute tonsillitis and pharyngitis (acute tonsillopharyngitis)”, the direct medical costs of providing medical care to specialized patients were determined. Direct costs on the part of parents included all costs for purchasing medicines for basic or concomitant therapy. Direct costs on the part of the healthcare system and the state included the costs of providing medical care at the outpatient stage. Direct non-medical costs included payments for disability leaves, indirect costs – lost gross domestic product (GDP) due to absence from work.Results. The total costs of the healthcare system and the state for 1 AVI patient are 42,472 rubles in case of uncomplicated course and 70,649 rubles in case of complicated course. In case of IRS®19 application from the first day of the disease, it is possible to reduce its duration by more than two-fold. Thus, the costs of medical care amount to 2,078 rubles. Payments for disability leaves by the Social Fund of Russia will amount to 2,287 rubles, and the lost GDP – 9,148 rubles (total costs 13,513 rubles).Conclusion. For the first time in Russian economic conditions, the use of IRS®19 for ARI treatment and prevention in children was evaluated. IRS®19 application from the first symptoms of the disease allows refusing the use of topical interferons, reduces the duration of symptoms and the need for prescription of antitussives, vasoconstrictors, and antibiotics.

The Therapeutic Potential and Molecular Mechanisms Underlying the Neuroprotective Effects of Sativex® - A Cannabis-derived Spray.

Sativex is a cannabis-based medicine that comes in the form of an oromucosal spray. It contains equal amounts of Δ9-tetrahydrocannabinol and cannabidiol, two compounds derived from cannabis plants. Sativex has been shown to have positive effects on symptoms of amyotrophic lateral sclerosis (ALS), multiple sclerosis (MS), and sleep disorders. It also has analgesic, antiinflammatory, antitumoral, and neuroprotective properties, which make it a potential treatment option for other neurological disorders. The article reviews the results of recent preclinical and clinical studies that support the therapeutic potential of Sativex and the molecular mechanisms behind its neuroprotective benefits in various neurological disorders. The article also discusses the possible advantages and disadvantages of using Sativex as a neurotherapeutic agent, such as its safety, efficacy, availability, and legal status.

Novel biopolymer spray formulation for drug delivery in precision dentistry

Addressing the growing challenges of periodontal and peri-implant diseases, this study first reports a promising advancement in precision dentistry: an intricately formulated biopolymer spray designed for precise, localized drug delivery during tailored dental procedures. Poly (lactic-co-glycolic acid) (PLGA), recognized for its controlled release, biodegradability, and FDA-approved biocompatibility, forms the core of this formulation. Utilizing the double emulsion method, PLGA microparticles (PLGA-MPs) were loaded with dental antibiotics: sodium amoxicillin (AMX-Na), trihydrate amoxicillin (AMX-Tri), and metronidazole (Met). This antibiotic combination was thoughtfully selected to meet the distinctive requirements of the most impacting dental treatments. The newly developed biopolymer spray underwent thorough in-vitro analysis, revealing an optimized release curve for antibiotics over time, guaranteeing sustained therapeutic efficacy, and dose-dependent efficacy, accommodating personalized treatment approaches. The positive outcomes position the novel biopolymer spray formulation the leaders in advancing localized drug delivery during dental procedures. Moreover, the precise application and the tunable formulation meets the concept of precision medicine: in detail, this formulation represents a significant stride in dental therapeutics, significantly contributing to the predictability of dental implantology.

Evaluation of banana peel extract (Musa sapientum L.) as a natural antimicrobial for livestock farming

AbstractIntroductionOne of the primary objectives of managing microbial content in livestock farming is to control diseases in the respective animals. Nevertheless, the pervasive development of drug‐resistant bacteria is a consequence of the high levels of antibiotic use that are necessary to achieve this objective. This situation exacerbates animal disease and poses a threat to human health. The purpose of this study was to investigate alternative microbial control methods in livestock farming using banana peel extract.Materials & MethodsThe antioxidant and antimicrobial activities of peel extracts from unripe and ripe cultivated bananas were examined and compared.ResultsThe results are notable because they show that the unripe banana peel extracts exhibited significantly better antioxidant activity than the ripe banana peel extracts in 2,2‐diphenyl‐1‐picrylhydrazyl (DPPH), 2,2′‐azino‐bis(3‐ethylbenzothiazoline‐6‐sulfonic acid (ABTS), and ferric reducing antioxidant power (FRAP) tests. Furthermore, the unripe banana peels showed significant antimicrobial activity in vitro against four bacteria that are commonly found in swine and poultry houses, including Staphylococcus epidermidis, Exiguobacterium indicum, Bacillus cereus, Bacillus siamensis, Bacillus altitudinis, Pantoea ananatis, and Bacillus megaterium. This activity was probably due to their high levels of total phenolic content and total flavonoid content. Then, the spray formulation loaded with the concentrated unripe banana peel extract that was five times higher than the minimum bactericidal concentration was developed and tested. Ethanol, sodium benzoate, tween 80, and glycerine were applied as additives in the spray formulation to increase the extract's solubility and stability. It was found that the developed spray formulation effectively inhibited the growth of S. epidermidis.ConclusionThese research outcomes show that the possible application of banana peel extract is an excellent approach because it is an eco‐friendly alternative to control microorganisms undesired microbial growth in farm animals.

An Unravelled Potential of Foliar Application of Micro and Beneficial Nutrients in Cereals for Ensuring Food and Nutritional Security

Micronutrient deficiency in soil and crops is a critical issue that contributes to what is known as hidden hunger. Hidden hunger refers to the lack of essential vitamins and minerals in people diets, often due to the poor nutrient content of staple crops, which can lead to significant health problems despite adequate caloric intake. Micronutrients are required in small amounts but are crucial for various physiological functions in plants, including cereals for enzyme activation, photosynthesis, nitrogen fixation, and synthesis of vital compounds. Corrective measures to address micronutrient deficiencies include soil application, seed treatment, foliar sprays, and genetic biofortification. Foliar sprays are particularly effective as they allow for the direct application of nutrients to plant leaves, ensuring quick absorption and utilization. This method can rapidly correct deficiencies, improve crop yields, and enhance the nutritional quality of the produce. Previous research has shown the efficacy of foliar sprays in addressing micronutrient deficiencies. Additionally, advancements in nanotechnology have led to the development of more efficient foliar spray formulations that enhance nutrient uptake and minimize environmental impact. Overall, addressing micronutrient deficiencies through foliar sprays and other agronomic practices is vital for improving crop health, yield, and nutritional quality, thereby contributing to food security and the alleviation of hidden hunger. However, specific dose of each micro- and beneficial nutrients are highly related to crops and cropping systems, season, agroclimatic conditions, materials used, and crop growth stage. The review article focuses on all issues and concerns with possible options for correcting micronutrient deficiency in cereals to ensure food and nutritional security and agricultural sustainability.