Nano Zinc Research Articles

Development of Plant Protein Derived Tri Angular Shaped Nano Zinc Oxide Particles with Inherent Antibacterial and Neurotoxicity Properties.

The synthesis of nanometer-sized metallic nanoparticles utilizing bio-sources is one of the most cost-effective and ecologically friendly approaches. Nano-zinc oxide particles (N-ZnO Ps) were made using a simple green synthesis method using an aqueous zinc nitrate salt and Perilla frutescens crude protein as a protecting and reducing agent in the current work. UV-visible (UV-vis) spectrophotometry, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), (energy dispersive x-ray spectroscopy) EDX and high-resolution transmission electron microscopy (HR-TEM) were used to characterize the synthesized N-ZnO Ps. A distinctive UV-vis absorption peak was observed at 370 nm due to N-ZnO Ps. The SEM and HR-TEM pictures revealed N-ZnO Ps with a triangular form. The XRD pattern indicated the wurtzite structure of N-ZnO Ps. Nanoparticles exhibited a zeta potential of −11.3 mV. The antibacterial activity of N-ZnO Ps was tested against Escherichia coli (E. coli) and Klebsiella pneumoniae (K. pneumonia) microorganisms. The N-ZnO Ps were non-toxic to HMC-3 human normal brain microglia cells; however, they exhibited a potential cytotoxic effect on the LN-18 human brain glioblastoma cell line. These results indicate that N-ZnOPs can act as promising antibacterial and anticancer treatments in the prevention of Glioblastoma.

Zinc oxide nanoparticles to the synthesis of high-value added biofuels from waste cooking oil methyl ester blends

In this study, nano zinc oxide particles with Tungsto phosphoric acid is used to catalyse the trans-esterification of used cooking oil biodiesel. The trans-esterification reaction parameters were optimized based on the trials. After adjusting the reaction parameters, an optimal set of parameters was found, with a maximum conversion rate of 94 % of waste cooking oil to biodiesel. For engine testing and analysis, synthetic biodiesel is employed as a blend of B100, B20 and B10. The susceptibility to bio-deterioration was assessed by carrying out the studies on their storage stability. The fuel properties for prepared fuel blends are tested within the ASTM standards. XRD profile of the prepared additives shown the formation of ZnO Nano particles is evident. Increase in biodiesel concentration in the blend has increased the peroxide values. Nano zinc oxide particles with Tungsto phosphoric acid catalyzed biodiesel blends lowered the peroxide values hence increase in the stability.

Silica sand-supported nano zinc oxide-graphene oxide composite induced rapid photocatalytic decolorization of azo dyes under sunlight and improved antimicrobial activity.

Here, silica sand-supported heterojunction composite of nano zinc oxide (nZnO) and graphene oxide nanosheet (nZnO-GO@SS) was prepared, and its potential as an efficient photocatalyst for the degradation of methylene blue (MB) and Rhodamine-B (Rh-B) under sunlight was demonstrated. Transmission electron microscopy confirmed the uniform distribution of spherically shaped nZnO of average size of approximately 8 nm over graphene oxide nanosheet (GO) in the composites. Photodegradation yields of 95.3% and 97.5% for 100 ppm of MB and Rh-B dye within 150 and 220 min, respectively, were achieved under sunlight by the prepared nanocatalyst (nZnO-GO), while sand microparticle-supported nanocatalyst (nZnO-GO@SS) demonstrated faster degradation of MB and Rh-B, i.e., within 120 and 160 min, respectively. Furthermore, when the recyclability of the photocatalyst was studied, the nZnO-GO exhibited more than 80% degradation efficiency after five cycles for both the dyes and nZnO-GO@SS demonstrated 10% higher (~90%) removal capability after five cycles of reuse. Furthermore, the antibacterial assay showed complete inactivation of Escherichia coli and Staphylococcus aureus bacterial strain by nZnO-GO@SS. Hence, our proposed strategy for the removal of toxic dyes from the aquatic environment under sunlight proved that sand microparticle-supported nanocatalyst (nZnO-GO@SS) might be a superior, cost-effective, and suitable photocatalytic system for industrial applications toward toxic dye removal and decontamination from industrial wastewater.

Estradiol and zinc-doped nano hydroxyapatite as therapeutic agents in the prevention of osteoporosis; oxidative stress status, inflammation, bone turnover, bone mineral density, and histological alterations in ovariectomized rats.

Osteoporosis (OP) is a serious health problem, and the most popular therapeutic strategy for OP is hormone replacement (estrogen); however, it increases the risk of reproductive cancers. Hydroxyapatite (HA) nanoparticles have a similar chemical structure to the bone mineral component and can be used as a new remedy for OP. This study was designed to investigate the osteoporosis-protective potential of nano zinc hydroxyapatite (ZnHA-NPs) and/or estradiol (E2) combined therapy. A total of 35 adult female rats were assigned into five groups (n = 7): 1) control group; 2) ovariectomized group (OVX); 3) OVX received oral estradiol replacement therapy (OVX/E2); 4) OVX received ZnHA replacement therapy (OVX/ZnHA); and 5) OVX received both estradiol and ZnHA-NPs combined therapy (OVX/E2+ZnHA). After 3 months of treatment, serum bone markers and estrogen level, oxidative/antioxidant, and inflammatory cytokines were determined. Additionally, femoral expression of estrogen receptors alpha and beta (ESR1; ESR2), receptor activator of nuclear factor-kappa B (RANKL) ligand, osteoprotegerin (OPG), bone mineral density (BMD), histological alterations, and immunohistochemical expression of vascular endothelial growth factor (VEGF) and proliferating cell nuclear antigen (PCNA) were assessed. ALP, PINP, Ca, and P concentrations improved significantly (p < 0.05) in all treatment groups, especially in the OVX/E + ZnHA group. MDA and NO were higher in OVX rats, while SOD activity and GSH were lower (p < 0.05). E2 alone or with ZnHA-NPs restored the estimated antioxidant molecules and cytokines toward normal levels in OVX rats (p < 0.05). On the other hand, E2 and ZnHA increased OPG and OC expression in femurs while decreasing ESR1, ESR2, and NF-kB expression (p < 0.05). The combination treatment was superior in the restoration of normal femoral histoarchitecture and both cortical and trabecular BMD (p < 0.05). Overall, the combined therapy of OVX/E2+ZnHA was more effective than the individual treatments in attenuating excessive bone turnover and preventing osteoporosis.

Synthesis of nZnO from waste batteries by hydrometallurgical method for photocatalytic degradation of organic pollutants under visible light irradiation.

Waste zinc carbon (Zn-C) batteries are generated worldwide in a large amount. They are non-rechargeable and costly to recycle. Therefore, they end up in the landfills where they create hazards for humans and for environment as well. Zn-C batteries are rich in concentration of different heavy metals so they can be subjected for the recovery of metals for the development of valuable new materials. In this study authors have proposed an easy hydrometallurgical method for the recovery of zinc from waste Zn-C batteries to synthesize nano zinc oxide (nZnO) photocatalyst. The prepared nZnO particles were irregular in shape, highly crystalline in nature with crystallite size 23.94nm. The band gap of the photocatalyst was 3.1eV. The photocatalytic activity of the synthesised nZnO was tested for the degradation of three organic pollutants namely; phenol, p-nitrophenol (PNP) and crystal violet dye (CV) in an aqueous solution under visible light irradiation. nZnO showed a good catalytic efficiency for the degradation of all the three pollutants, however, the crystal violet (CV) removal was best in comparison with the other pollutants, it was minimally effected by the increase in CV concentration. The maximum degradation of phenol, PNP and CV was found to be 95.03±0.2%, 88.63±0.1% and 97.87±0.4%, respectively. The degradation data was fitted best with pseudo-first-order kinetic model. The photocatalyst was recyclable and its regeneration ability was higher for initial three cycles. The intermediate compounds formed in the process of degradation were determined by liquid chromatography and mass spectroscopy (LC-MS) analysis.

Effect of annealing in argon atmosphere on the properties of zinc oxide nanoparticles doped with Mn(II) and Co(II) ions prepared in solvothermal synthesis

Methods of preparation and application of zinc oxide nanoparticles doped with Mn(II) and Co(II) ions are presented and discussed in the paper. Part one shows the results of the solvothermal synthesis of zinc oxide nanoparticles doped with Mn(II) and Co(II) ions. The effect of process parameters on the properties of doped nano zinc oxide has been identified. We also examined the impact of annealing in argon atmosphere of doped zinc oxide nanoparticles on physicochemical properties. Morphology analysis was performed using scanning microscopy and molecular analysis was performed using by inductively coupled plasma - optical emission spectrometry. The zeta potential was measured for samples annealed in argon atmosphere and for samples not annealed. Phase analysis was performed by x-ray diffraction. Based on this analysis, the lattice parameters were determined.

Effect of M-resin-based Stabilizer on the Performance of SBS Modified Asphalt

Industrial solid waste M-resin (MR) contains high sulfur content which was difficult to be comprehensively utilized. According to the vulcanization reaction mechanism, MR was used as vulcanizing agent, nano zinc oxide (ZnO) as an activator, tetramethyl thiuram disulfide (TMTD) as an accelerator to produce M-resin-based stabilizer. MR (0.5, 1, 1.5, 2, 2.5), ZnO (0.1, 0.2, 0.3, 0.4, 0.5) and TMTD (0.06, 0.08, 0.1, 0.12, 0.14) were mixed with different contents, a three-factor and five-level orthogonal experiment was designed to test the penetration, ductility, softening point and 48 h softening point difference of SBS modified asphalt. Based on the four indexes, the basic formula of the stabilizer was obtained. The influence of kaolin, an auxiliary material, on the thermal stability was compared, and the formula were optimized, the appropriate dosage was determined. The microscopic morphology of the modified asphalt and SBS developmental fineness was analyzed with the fluorescent microscopy technology, and the SBS developmental fineness was studied with the generated binary graph and skeleton graph. DSR test was carried out to detect rheological properties of modified asphalt with different dosages of MR-based stabilizes. The results show that MR can significantly improve the thermal storage stability of modified asphalt. The ratio of MR:TMTD:ZnO:Kaolin is 1.5:0.5:0.08:12, and the appropriate dosage is 1.02 %. The stabilizer can reduce the 48 h softening point difference 33.6 ℃, increase the softening point 13.6 ℃, decrease the penetration degree 9.7 mm, but it has little effect on 5 ℃ ductility index. The microscopic images show that a cavity two-phase continuous network structure is formed inside the modified asphalt under the appropriate dosage of M-resin-based stabilizer. The SBS developmental fineness is 2.36 μm, and the uniformity is good. DSR test also shows that stabilizer can effectively improve the high temperature performance of SBS modified asphalt.

Study on catechol/tetraethylenepentamine and nano zinc oxide co‐modifying ultrahigh molecular weight polyethylene fiber surface to improve interfacial adhesion

AbstractTo improve interfacial adhesion to rubber matrix, a lower cost surface modification strategy of ultrahigh molecular weight polyethylene (UHMWPE) fiber was proposed by replacing expensive dopamine with the two‐component system of catechol/tetraethylenepentamine (CAT/TEPA) and then depositing nano zinc oxide (ZnO NPs). By Michael addition reaction or Schiff base reaction between CAT and TEPA, the CAT/TEPA layer was coated on the fiber surface, and further served as a secondary functional platform to realize ZnO NPs deposition through coordination. The surface morphology, chemical structure and composition, wettability and thermal property of the UHMWPE fibers were investigated to evaluate the process and effect of the surface modification. The results of the single‐filament tensile test indicated that the tensile strength of the UHMWPE fibers has no deterioration after the modification treatment. In comparison with the original fiber, the pull‐out test showed that the highest interface adhesion between the modified UHMWPE fibers and rubber matrix increased by 80.4%. Additionally, it was found that the appropriate zinc ion concentration played an important role in the modification effect.

Effect of Nano Zinc Oxide and Traditional Zinc (Oxide and Sulphate) Sources on Performance, Bone Characteristics and Physiological Parameters of Broiler Chicks

Zinc is one of the most importance trace minerals in poultry nutrition. Therefore, the objective of this study is to investigate the influence of nano zinc oxide (green and chemical) and traditional zinc (Oxide and Sulphate) on broiler performance, bone characteristics and some biochemical parameters from 1-35 day of age. A total of 240 a-day-old male chicks (Arbor Acres) were assigned at random into 4 treatments. Treatments 1 and 2 contained zinc in traditional form as zinc oxide (ZnO) and zinc sulphate (Zn SO4) and treatments 3 and 4 contain zinc in nano form; green synthesized zinc oxide nanoparticles (GZnO NPs) and chemically synthesized zinc oxide nanoparticles (CZnO NPs); respectively. The results showed that the birds fed diet treated with nano-Zn sources (GZnO NPs and CZnO NPs) showed the best results (P&lt;0.01) in weight gain and feed conversion ratio. There were no statistical differences between the two sources of zinc in the traditional form as well as between the two sources of zinc in the nano form. In addition, chicks fed nano zinc sources gave the best values in bone mineral density and bone mineral concentration compared to those fed traditional sources of zinc. These results reflect the values obtained for tibia length, width, breaking strength and ash since the dietary GZnO NPs and CZnO NPs were recorded for the highest values compared with the other traditional form. Non-significant differences were detected in the metabolic hormones (T3, T4) levels and their ratio T3/T4 among different dietary treatments. The results of the liver function (ALT, AST and albumin), the kidney function (creatinine) and alkaline phosphatase were within the normal range in all treatments. From the current results it can be suggested that using zinc in nano form instead of traditional form enhances performance and bone parameters of broiler chicks.

Nano Zinc Supplementation Affects Immunity, Hormonal Profile, Hepatic Superoxide Dismutase 1 (SOD1) Gene Expression and Vital Organ Histology in Wister Albino Rats.

The study was conducted to assess nano zinc (ZnN) as a feed supplement with an aim to compare the supplemental dose of inorganic zinc (ZnI). ZnN was synthesized from 0.45molar (M) zinc nitrate [Zn(NO3)2.6H2O] and 0.9M sodium hydroxide (NaOH) and was confirmed to be of ZnN by TEM-EDAX measurements. Wister albino rats (rats; 84, 53.6 ± 0.65g) were divided into seven groups (4 replicate with 3 rats each) and given feed supplemented with zinc for 60days with either of the following diets: (1) normal control (NC): basal diet (BD) + no supplemental Zn; (2) ZnI-25: BD + 25mg/kg Zn from inorganic ZnO; (3) ZnN-25: BD + 25mg/kg of ZnN; (4) ZnN-12.5: BD + 12.5mg/kg of ZnN; (5) ZnN-6.25: BD + 6.25mg/kg of ZnN; (6) ZnN-3.125: BD + 3.125mg/kg of ZnN; (7) ZnN-50: BD + 50mg/kg of ZnN. T3 and insulin-like growth factor-1 (IGF-1) hormone levels were similar among groups (P > 0.05), whereas T4 and testosterone were significantly affected, based on supplemented dose. Zn supplementation improved both cell-mediated and humoral immunity. However, both cell-mediated immunity at 24h and humoral immunity were statistically similar in ZnI-25 and ZnN-6.25 groups. Superoxide dismutase 1 gene expression was found to be similar in all experimental groups. The vascular degeneration were found in liver tissues moderately in NC, mildly in ZnN-6.25 and ZnN-3.125 groups, and no observable changes were noticed in kidney and spleen tissues. However, there was a mild damage in intestinal epithelium of ZnN-25 group rats, hyperplasia of goblet cells, and moderate damage in intestinal villi were observed in ZnN-50 group rats. From the study, it can be concluded that ZnN at half the dose of ZnI showed similar or better responses in terms of immunity, SOD-1 expression, hormonal profiles, and the tissue architecture of vital organs in rats, i.e., 25mg/kg of Zn from ZnI and 12.5mg/kg of ZnN impacted similar biological responses like immunity, SOD-1 expression, hormonal profiles, and the tissue architecture of vital organs in rats.

Effects of Conventional and Nano Fertilizers on Growth and Yield of Maize (Zea mays L.)

Background: In the current global landscape, agriculture is heavily reliant on synthetic fertilisers, which places stress on the soil and plant environment. The greatest alternative is nano fertilisers. As a result, the following research was completed. Methods: In 2021, a pot experiment was conducted at Annamalai Nagar, Faculty of Agriculture, Annamalai University, to investigate the effects of conventional and nano fertilizer on maize growth and yield (Zea mays L.). To analyse maize crop development and yield qualities, the experiment was set up in a Completely randomized block design (CRBD) with two factors and ten treatments: Factor A nano zinc and zinc EDTA and Factor B combined application of nano nitrogen with conventional fertilizers. Result: In our investigation results was concluded that combined application 50% N through urea + 50% N through nano urea combined with nano Zn substantially increases plant height 195.80 cm, LAI 1.95, dry matter production 15013 kg ha-1, number of grains cob-1 496, garin yield 8926 kgs ha-1, stover yield 12094 kgs ha-1 and harvest index 42.46.

Nanotechnology and Application of Nano Titanium Dioxide, Nano Zinc Oxide, and Nano Copper Oxide on Textile for High Performance

Nanotechnology and Application of Nano Titanium Dioxide, Nano Zinc Oxide, and Nano Copper Oxide on Textile for High Performance

Synthesis of Nanoplatelet Zinc Borate and its Combination with Expandable Graphite and Red Phosphorus as Flame Retardants for Polypropylene

The zinc borate nanoparticles (2ZnO.3B2O3.3H2O) were successfully prepared by precipitation reaction in aqueous solutions of borax and zinc sulfate using oleic acid as a surfactant. The structural, morphological characteristics and the wettability of the particle surface were studied through Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and the contact angle. The hydrophobic zinc borate (n-ZB) had nanoplatelet morphology with a diameter of 1.0 - 1.5 µm and thickness of about 90 nm. Nano zinc borate showed a synergistic influence with expandable graphite (EG) and red phosphorus (RP) on the flame retardant properties and thermo-oxidative stability of polypropylene (PP). The nanocomposite 7n-ZB/7RP/7EG/PP achieved the V-1 UL94 verticle burning test with a limited oxygen index of 23.7% and the char yield of 14.67 wt.% at 900 oC. Furthermore, the fire retardant performance and the mechanical properties of the nanocomposites loading ZB nanoparticles were improved compared with the composites employing commercial ZB microparticles.

Nano zinc oxide decorated latex drainage: A promising antibacterial material prevent retrograde infection associated with drainage.

Surgical site infections (SSI) represent a considerable burden for healthcare systems. Studies show retrograde infection of the drainage tube is an important cause of surgical site infection. To this end, Surgeons work in various ways to reduce the incidence of retrograde infections. Fast progress in nanoscience and nanotechnology is revolutionizing the field of medicine to improve the quality of life due to the myriad of applications stemming from their unique properties, including the antibacterial activity against pathogens. Herein, we investigate the antibacterial properties of a novel nanomaterial composed of nano zinc oxide-decorated latex drainages. These materials were produced by the hydrothermal method and characterized through field-emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), and DLS (Dynamic light scattering techniques). Then inductively coupled plasma mass spectrometry (ICP-MS) measurements showed that nano zinc oxide on the surface of the latex drainages showed a gradient release process. The antimicrobial activity of nano zinc oxide -decorated latex drainage was evaluated against E. coli and Staphylococcus aureus, the main bacteriological agent in the retrograde infection associated with drainage. The results showed that slices and rods nano zinc oxide (SAR-ZnO) drainage tubes had the best antibacterial properties both in vivo and in vitro. In addition, the cell viability assay demonstrated that nano zinc oxide-decorated latex drainages exerted good biocompatibility. Therefore, SAR-ZnO drainage tubes can be a perfect nanomaterial against the retrograde infection associated with drainage.

Analyzing the Emission Characteristics of a Catalytic Converter using a Nano-ZnO Coating

Due to the ever-growing challenge of pollutants emitted by vehicles, protection of the environment from the pollutants has become a focus of attention. The rising volume of traffic on our nation's roadways now poses a severe danger to the environment due to hazardous emissions, and the refueling availability and low maintenance of petrol fuel vehicles have prompted many to choose for petrol vehicles. Numerous experts have used a variety of strategies to decrease the amount of emissions produced by vehicles, but this sector still has a great deal of room for advancement. The objective of this work is to compare the emission characteristics of a four-stroke petrol engine with and without a nano zinc oxide (nano-ZnO) encased catalytic converter. The findings indicated that the nano-ZnO coated catalytic converter aided in reducing the CO, CO2, HC and NOx emissions by 41.3%, 71.4%, 48.2%, and 46.7%, respectively

The Role of Fertilization with Nano-Zinc Oxide on the Growth and Yield of Wheat in Calcareous Desert Soil

A field experiment was conducted to study the effect of the source and level of addition of nano-zinc oxide on the growth and yield of IPA-99 wheat cultivar grown in desert soil conditions and compare it with regular zinc fertilizers. Fertilizers were sprayed on the soil, the nano-fertilizers included three sources of zinc, nano-metallic zinc oxide (ZnnO), zinc-chelated nano-fertilizer ZnnDTPA, and nano-zinc humate (ZnnHA). The nano-fertilizers were added at levels of 1 and 2 kg ha-1. Whereas the regular zinc fertilizers, ZnO, ZnDTPA, and ZnHA, were added at a level of 4 and 8 kg ha-1 in addition to the control treatment without addition. After harvest, the grain yield, straw yield, and the concentration of zinc, nitrogen, phosphorous, and potassium in the wheat grain were estimated. The results showed that zinc nano fertilizers had a significant effect in increasing the studied plant traits compared to the control treatment, Zinc humate nano fertilizer gave the highest increase in all studied plant traits among the nano-fertilizers, as it achieved an increase in grain yield, straw yield, zinc, nitrogen, phosphorous and potassium concentrations in grains by 45.36%, 57.01%, 409.43%, 42.36%, 98.20%, and 38.56 % respectively over the control treatment. The zinc nano-fertilizers had a significant effect on increasing the yield of grains and the concentration of nitrogen and potassium in the grains compared to the regular zinc fertilizers. While the results showed there was no significant difference in straw yield and the concentration of zinc and phosphorous in the grains between nano and normal zinc fertilizer.

Citrullus colocynthis loaded zinc nanoparticle (C.cZnO): A potential gout healer in modulating antioxidant status and lysosoaml enzymes in MSU crystal Induced PBMC cells

The aim of the present investigation is to study the effect of C.colocynthis loaded zinc nanoparticle (C.cZnO) on the antioxidant status and lysozomal enzymes in PBMC cells induced with monosodium urate crystals. The Zinc nano particles of C.colocynthis was prepared. Approximately 1×106 cells/well seeded human PBMC were divided in to five groups and treated in the following manner. Group I served as control, Group II cells were treated with 1mg/ml MSU crystals, Group III and Group IV cells were induced with MSU crystals and received 250µg/ml and 500 µg/ml of C. colosynthis zinc nanoparticle (C.cZno) respectively and were incubated at 37°C for 24 hrs in the CO2 incubator. Group-IV cells were treated with colchicine (1µg/ml) the positive control used in the present study. The enzymatic and non enzymatic antioxidants as well as lysosomal enzymes were analysed using the established procedures. The extent of lipid peroxidation was also measured.

Performance and mechanisms exploration of nano zinc oxide (nZnO) on anaerobic decolorization by Shewanella oneidensis MR-1

Although the ecological safety of nanomaterials is of widespread concern, their current ambient concentrations are not yet sufficient to cause serious toxic effects. Thus, the nontoxic bioimpact of nanomaterials in wastewater treatment has attracted increasing attention. In this study, the effect of nano zinc oxide (nZnO), one of the most widely used nanomaterials, on the anaerobic biodegradation of methyl orange (MO) by Shewanella oneidensis MR-1 was comprehensively investigated. High-dosage nZnO (>0.5 mg/L) caused severe toxic stress on S. oneidensis MR-1, resulting in the decrease in decolorization efficiency. However, nZnO at ambient concentrations could act as nanostimulants and promote the anaerobic removal of MO by S. oneidensis MR-1, which should be attributed to the improvement of decolorization efficiency rather than cell proliferation. The dissolved Zn2+ was found to contribute to the bioeffect of nZnO on MO decolorization. Further investigation revealed that low-dosage nZnO could promote the cell viability, membrane permeability, anaerobic metabolism, as well as related gene expression, indicating that nZnO facilitated rather than inhibited the anaerobic wastewater treatment under ambient conditions. Thus, this work provides a new insight into the bioeffect of nZnO in actual environment and facilitates the practical application of nanomaterials as nanostimulants in biological process.

Effect of spraying with glutamic acid and nano zinc oxide on the active substance and some anatomical characteristics of Lavendula Angustifolia

The study was conducted in the wooden canopy of the Department of Horticulture and Landscape Engineering / College of Agriculture / Tikrit University during the growing season 2021-2022, to study the effect of spraying with glutamic acid and nano-zinc oxide on some vegetative growth characteristics, mineral content, active substance and some anatomical characteristics of Lavendula Angustifolia Mill. A factorial trial was carried out with two factors, the first factor was glutamic acid at three levels (0, 100, and 200) mg. L-1 and the second factor are zinc oxide nanoparticles at four levels (0, 0.50, 1, and 1.50) g. L-1 According to the RCDB (Randomized Complete Block Design) with three replications, the most important results are summarized as follows:Estimation of some of the active compounds in the volatile oil in lavender leaves: The interaction treatment G2Z3 (spraying with glutamic acid at a concentration of 200 mg. L-1 + nano zinc oxide at a concentration of 1.50 g. L-1) was characterized by giving the highest concentration of phenolic compounds in the volatile oil in lavender leaves in (Linalyl acetate, Linalool, Lavandulyl). acetate) which reached (33.32 - 20.69 - 120.4) respectively, compared to the lowest concentrations of the comparison treatment.

Effect of glutamic acid spraying and nano zinc oxide in the growth and content qualities of Lavendula Angustifolia Mill

The study was conducted in the wooden canopy of the Department of Horticulture and garden Engineering / College of Agriculture / University of Tikrit during the 2021 agricultural season, in order to study the effect of spraying with glutamic acid and Nano-zinc oxide on some vegetative growth characteristics and mineral content of Lavendula Angustifolia Mill plant. A factorial experiment was carried out with two factors, the first factor of glutamic acid with three levels (0, 100, and 200) mg. L1- The second factor is Nano zinc oxide at four levels (0, 0.50, 1, and 1.50 g). L1 - According to the design of the full randomized RCDB sectors (Randomized Complete Block Design) and three duplicates, the most important results are summarized as follows: Characteristics of vegetative growth: The transaction G2 was characterized by giving the highest differences in plant height, the number of leaves, and total chlorophyll content, which amounted to 32.475 cm and 876.12 leaves. Plant-1, 35.128 mg. gm 1-soft weight, respectively, compared to the lowest values for the above-mentioned traits for the comparison transaction.