Incorporation Of ZnO Nanoparticles Research Articles

Immobilization of Cu2+ enhances the anti-mould properties of bamboo by addition of ZnO nanoparticles

Alkaline Copper Quaternary (ACQ) is widely used to improve the anti-mould properties of bamboo in industry. In this paper, ZnO nanoparticles are employed to enhance the immobilization of Cu2+, further improving the anti-mould performance of bamboo materials. The dispersibility of ZnO nanoparticles in the ACQ solution was studied by an orthogonal test. The loss rates of Cu2+ in the bamboo specimens were measured. The results indicate that the incorporation of ZnO nanoparticles helps to mitigate Cu2+ leaching and further enhance the antibacterial properties of the bamboo specimens.

Development of cellulose/ZnO based bioplastics with enhanced gas barrier, UV-shielding effect and antibacterial activity

Development of renewable and biodegradable plastics with good properties, such as the gas barrier, UV-shielding, solvent resistance, and antibacterial activity, remains a challenge. Herein, cellulose/ZnO based bioplastics were fabricated by dissolving cellulose carbamate in an aqueous solution of NaOH/Zn(OH)42−, followed by coagulation in aqueous Na2SO4 solution, and subsequent hot-pressing. The carbamate groups detached from cellulose, and ZnO which transformed from cosolvent to nanofiller was uniformly immobilized in the cellulose matrix during the dissolution/regeneration process. The appropriate addition of ZnO (below 10.67 wt%) not only improved the mechanical properties but also enhanced the water and oxygen barrier properties of the material. Additionally, our cellulose/ZnO based bioplastic demonstrated excellent UV-blocking capabilities, increased water contact angle, and enhanced antibacterial activity against S. aureus and E. coli, deriving from the incorporation of ZnO nanoparticles. Furthermore, the material exhibited resistance to organic solvents such as acetone, THF, and toluene. Indeed, the herein developed cellulose/ZnO based bioplastic presents a promising candidate to replace petrochemical plastics in various applications, such as plastic toys, anti-UV guardrails, window shades, and oil storage containers, offering a combination of favorable mechanical, gas barrier, UV-blocking, antibacterial, and solvent-resistant properties.

Enhancing Salt Stress Tolerance in Rye with ZnO Nanoparticles: Detecting H2O2 as a Stress Biomarker by Nanostructured NiO Electrochemical Sensor

This article is devoted to the study of the effect of ZnO nanoparticles on the development of tolerance to salt stress in rye samples. As a quantitative criterion for assessing the degree of oxidative stress, the amount of H2O2 released in the samples during growth was determined. For these purposes, an electrochemical sensor based on hydrothermally synthesized wall-shaped NiO nanostructures was developed. This sensor has been proven to demonstrate high sensitivity (2474 µA·mM−1), a low limit of detection (1.59 µM), good selectivity against common interferents, and excellent long-term stability. The investigation reveals that the incorporation of ZnO nanoparticles in irrigation water notably enhances rye’s ability to combat salt stress, resulting in a decrease in detected H2O2 levels (up to 70%), coupled with beneficial effects on morphological traits and photosynthetic rates.

Palm oil mill secondary effluent treatment using ZNO-clay liquid photocatalyst in membrane photocatalytic reactor

In recent years, photocatalytic treatment of palm oil mill secondary mill effluent (POMSE) incorporating ZnO nanoparticles with various types of capping agents via membrane photocatalytic reactor (MPR) has gained great interest among researchers. Nevertheless, most of previous studies have employed a rather time-consuming oven drying and calcination method to synthesise ZnO in powder form. Therefore, a simpler synthesis method is considered necessary. In this study, ZnO-clay was synthesised in liquid form using the precipitation method, without undergoing oven drying and calcination. The effect of different ZnO-clay ratios on the degradation performance of POMSE via MPR was also examined. Results indicated that ZnO-clay 1:3 was efficient in BOD removal percentage, while the removal percentages of COD, colour and turbidity were higher for ZnO-clay 1:5 compared to other ratios.

Study of Antimicrobial Activity of ZnO Nanoparticles Dopped Natural Hydroxyapatites

Bone replacements and repairs often encounter infections from diverse microbes, necessitating costly and painful secondary surgeries and treatments. Developing antimicrobial bone implants is crucial to mitigate these complications and enhance regeneration. Moreover, the biological synthesis of hydroxyapatite (Ca10(PO₄)6(OH)2, a primary component of human bone, presents advantages over chemically synthesized alternatives due to lower impurity and cost. This study focuses on synthesizing hydroxyapatite powders from buffalo and goat femoral bones, with the incorporation of ZnO nanoparticles. Analyzed via XRD and FTIR, the prepared powder exhibited potent antimicrobial properties against various bacterial strains. Specifically, the hydroxyapatite powder doped with ZnO nanoparticles displayed superior antimicrobial activity. Consequently, this synthesized material holds significant promise for applications in bone tissue engineering and related fields.

Enhancement of Visible Light Antibacterial Activities of Cellulose Fibers from Lotus Petiole Decorated ZnO Nanoparticles.

Cellulose/ZnO (CZ) nanocomposites are promising antimicrobial materials known for their antibiotic-free nature, biocompatibility, and environmental friendliness. In this study, cellulose fibers extracted from lotus petioles were utilized as a substrate and decorated with various shapes of ZnO nanoparticles (NPs), including small bean, hexagonal ingot-like, long cylindrical, and hexagonal cylinder-shaped NPs. Increasing zinc salt molar concentration resulted in highly crystalline ZnO NPs forming and enhanced interactions between ZnO NPs and -OH groups of cellulose. The thermal stability and UV-visible absorption properties of the CZ samples were influenced by ZnO concentration. Notably, at a ZnO molar ratio of 0.1, the CZ 0.1 sample demonstrated the lowest weight loss, while the optical band gap gradually decreased from 3.0 to 2.45eV from the CZ 0.01 to CZ 1.0 samples. The CZ nanocomposites exhibited remarkable antibacterial activity against both Staphylococcus aureus (S. aureus, Gram-positive) and Escherichia coli (E. coli, Gram-negative) bacteria under visible light conditions, with a minimum inhibitory concentration (MIC) of 0.005mg/mL for both bacterial strains. The bactericidal effects increased with higher concentrations of ZnO NPs, even achieving 100% inhibition. Incorporating ZnO NPs onto cellulose fibers derived from lotus plants presents a promising avenue for developing environmentally friendly materials with broad applications in antibacterial and environmental fields.

"Nano in Nano"-Incorporation of ZnO Nanoparticles into Cellulose Acetate-Poly(Ethylene Oxide) Composite Nanofibers Using Solution Blow Spinning.

In this work, the preparation and characterization of composites from cellulose acetate (CA)-poly(ethylene oxide) (PEO) nanofibers (NFs) with incorporated zinc oxide nanoparticles (ZnO-NPs) using solution blow spinning (SBS) is reported. CA-PEO nanofibers were produced by spinning solution that contained a higher CA-to-PEO ratio and lower (equal) CA-to-PEO ratio. Nanoparticles were added to comprise 2.5% and 5% of the solution, calculated on the weight of the polymers. To have better control of the SBS processing conditions, characterization of the spinning suspensions is carried out, which reveals a decrease in viscosity (two- to eightfold) upon the addition of NPs. It is observed that this variation of viscosity does not significantly affect the mean diameters of nanofibers, but does affect the mode of the nanofibers' size distribution, whereby lower viscosity provides thinner fibers. FESEM-EDS confirms ZnO NP encapsulation into nanofibers, specifically into the CA component based on UV-vis studies, since the release of ZnO is not detected for up to 5 days in deionized water, despite the significant swelling of the material and accompanied dissolution of water-soluble PEO. Upon the dissolution of CA nanofibers into acetone, immediate release of ZnO is detected, both visually and by spectrometer. ATR-FTIR studies reveal interaction of ZnO with the CA component of composite nanofibers. As ZnO nanoparticles are known for their bioactivity, it can be concluded that these CA-PEO-ZnO composites are good candidates to be used in filtration membranes, with no loss of incorporated ZnO NPs or their release into an environment.

Improvement of Dye-Sensitized Solar Cells (DSSCs) performance using Crude Brazilein Extract from Sappanwood (Caesalpinia Sappan L.) with the incorporation of ZnO nanoparticles

Improvement of Dye-Sensitized Solar Cells (DSSCs) performance using Crude Brazilein Extract from Sappanwood (Caesalpinia Sappan L.) with the incorporation of ZnO nanoparticles

Studying the optoelectronic properties and emission quenching dynamics of poly‐TPD by incorporating ZnO nanoparticles and multiwalled carbon nanotubes

AbstractIn this study, the optoelectronic properties and emission dynamic quenching of poly‐TPD were investigated upon incorporating ZnO nanoparticles and multiwalled carbon nanotubes (MWCNTs). A solution blending method was utilized to successfully prepare poly‐TPD incorporated with various contents of ZnO/MWCNT nanocomposites. The optoelectronic properties of the nanocomposites were analyzed using UV–Vis and photoluminescence spectrophotometry. The incorporation of the nanocomposites resulted in a decrease in transmittance, reflectance, and absorption edge, indicating a reduction in the poly‐TPD's bandgap. Parameters such as extinction coefficient, Urbach energy, and charge carrier density also decreased with addition of the nanocomposites, suggesting increased scattering, disorder, and the presence of defect states. The decrease in bandgap from 2.970 to 2.852 eV with increasing the nanocomposite content confirmed the emergence of new electronic states. Furthermore, the nature of the transitions changed from direct allowed for pure poly‐TPD to direct forbidden upon incorporation of the nanocomposites. The inclusion of the nanocomposites also led to a decrease in refractive index and fluorescence intensity. The observed fluorescence quenching primarily exhibited dynamic characteristics, with a Stern–Volmer constant of 5.14 L/g and quenching rate constants surpassing the minimum threshold for efficient quenching. The increase in charge transfer rate constants with the nanocomposite content indicated enhanced quenching efficiency and charge transfer, likely due to the increased surface area and presence of defects. These findings suggest that poly‐TPD incorporated with ZnO/MWCNT nanocomposites displays promising properties for applications in optoelectronic devices.

Antibacterial Activity Edible Coating of Jackfruit Seed Starch and Alginate Incorporated with ZnO Nanoparticles Applied to Cherry Tomatoes

Cherry tomatoes have many health benefits and have high economic value. However, cherry tomatoes are perishable and short lived. To protect and maintain the quality of cherry tomatoes, you can apply an edible coating. The materials used in this study were jackfruit seed starch, alginate, and ZnO nanoparticles. This study aims to determine the effect of edible coating on jackfruit seed starch and alginate incorporating ZnO nanoparticles applied to cherry tomatoes in terms of antibacterial activity and shelf life. Variations in the treatment in this study were edible coating materials for jackfruit seed starch and alginate, and the concentration of ZnO nanoparticles (0%; 5%; 10%; 15%). Antibacterial activity was analyzed against E. coli and S. aureus bacteria. The results showed that the edible coating of jackfruit seed starch with 10% and 15% ZnO nanoparticles incorporation was able to form an inhibition zone against E. coli bacteria, while the 5%, 10%, and 15% ZnO nanoparticle variations were able to form an inhibition zone against S bacteria. aureus. In edible coating alginate with 15% ZnO nanoparticles incorporation was able to form an inhibition zone against E. coli bacteria, whereas in all variations of ZnO nanoparticles it was able to form an inhibition zone against S. aureus bacteria. The addition of ZnO nanoparticles proved the formation of a larger bacterial inhibition zone compared to edible coatings without ZnO nanoparticles. The results also showed that cherry tomatoes coated with an edible coating of jackfruit seed starch and alginate with a variation of ZnO nanoparticles had a longer shelf life compared to cherry tomatoes that were not coated with an edible coating.

Artificial synaptic characteristics of PVA:ZnO nanocomposite memristive devices

Computational efficiency is significantly enhanced using artificial neural network-based computing. A two-terminal memristive device is a powerful electronic device that can mimic the behavior of a biological synapse in addition to storing information and performing logic operations. This work focuses on the fabrication of a memristive device that utilizes a resistive switching layer composed of polyvinyl alcohol infused with ZnO nanoparticles. By incorporating ZnO nanoparticles into the polymer film, the fabricated memristive devices exhibit functionalities that closely resemble those of biological synapses, including short-term and long-term plasticity, paired-pulse facilitation, and spike time-dependent plasticity. These findings establish the ZnO nanoparticle-polymer nanocomposite as a highly promising material for future neuromorphic systems.

Influence of ZnO Nanoparticles on the Properties of Ibuprofen-Loaded Alginate-Based Biocomposite Hydrogels with Potential Antimicrobial and Anti-Inflammatory Effects.

Hydrogels are a favorable alternative to accelerate the burn wound healing process and skin regeneration owing to their capability of absorbing contaminated exudates. The bacterial infections that occur in burn wounds might be treated using different topically applied materials, but bacterial resistance to antibiotics has become a major problem worldwide. Therefore, the use of non-antibiotic treatments represents a major interest in current research. In this study, new antibiocomposite hydrogels with anti-inflammatory and antimicrobial properties based on hyaluronic acid (HA) and sodium alginate (AG) were obtained using 4-(4,6-dimethoxy-1,3,5-triazinyl-2)-4-methylmorpholinium chloride as an activator. The combination of Ibuprofen, a non-steroidal anti-inflammatory drug commonly used to reduce inflammation, fever and pain in the body, with zinc oxide nanoparticles (ZnO NPs) was used in this study aimed at creating a complex hydrogel with anti-inflammatory and antimicrobial action and capable of improving the healing process of wounds caused by burns. FTIR spectra confirmed the cross-linking of AG with HA as well as the successful incorporation of ZnO NPs. Using electronic microscopy, it was noticed that the morphology of hydrogels is influenced by the incorporation of ZnO nanoparticles. Moreover, the incorporation of ZnO nanoparticles into hydrogels also has an influence on the swelling behavior at both pH 7.4 and 5.4. In fact, the swelling rate is lower when the amounts of the activator, HA and ZnO NPs are high. A drug release rate of almost 100% was observed for hydrogels without ZnO NPs, whereas the addition of nanoparticles to hydrogels led to a decrease in the release rate to 68% during 24 h. Cellular viability tests demonstrated the non-cytotoxic behavior of the hydrogels without the ZnO NPs, whereas a weak to moderate cytotoxic effect was noticed for hydrogels with ZnO NPs. The hydrogels containing 4% and 5% ZnO NPs, respectively, showed good antimicrobial activity against the S. aureus strain. These preliminary data prove that these types of hydrogels can be of interest as biomaterials for the treatment of burn wounds.

Cytotoxicity of PLGA-zinc oxide nanocomposite on human gingival fibroblasts.

Polylactic-co-glycolic acid and zinc oxide (PLGA-ZnO) nanocomposite has been investigated for its antibacterial properties, which could be beneficial for adding to wound dressings after periodontal surgery. However, its cytotoxicity against human gingival fibroblasts (HGFs) remains unclear and should be evaluated. ZnO nanoparticles were synthesized using the hydrothermal method. These metallic nanoparticles were incorporated into the PLGA matrix by the solvent/non-solvent process. The nanomaterial was evaluated by field emission scanning electron microscopy (FESEM), Fourier transform infrared (FTIR), thermogravimetric analysis (TGA), and x-ray diffraction (XRD) analyses. HGF cells were acquired from the National Cell Bank and categorized into four groups: ZnO, PLGA, ZnO-PLGA, and control. The cells were exposed to different ZnO (1, 20, 40, 60, 80, and 100 µg/mL) and PLGA (0.2, 4, 8, 12, 16, and 20 µg/mL) concentrations for 24 and 48 hours. The cytotoxicity was tested using the MTT assay. The data were analyzed using SPSS 25, and P<0.05 was considered statistically significant. ZnO nanoparticles exhibited significant toxicity at≥40 µg/mL concentrations after 24 hours. Cell viability decreased significantly at all the tested concentrations after 48 hours of exposure. PLGA-ZnO cell viability in 24 hours was similar to the control group for all the concentrations up to 80 µg/mL. ZnO nanoparticles could be toxic against HGF in high concentrations and with prolonged exposure. Therefore, incorporating ZnO nanoparticles into a biocompatible polymer such as PLGA could be a beneficial strategy for reducing their toxicity.

One-step facile synthesis of MoS2 - reduced graphene oxide/ZnO nanostructure for high-performance microwave absorption

The tremendous development in electronic devices and their prolific implications have triggered a serious threat to our ambiance in form of electromagnetic interference (EMI) pollution. The present study manifests a feasible approach to design an alternative architecture of graphene-based material for improving the shielding performance through absorption in X-band frequency array. The MoS2-rGO/ZnO ternary nanostructure has been synthesized through a simplistic solvothermal approach. The studies suggest that the MoS2-rGO/ZnO ternary nanocomposite exhibits outstanding EM wave absorption and dissipation capabilities as compared to its constituent components. The average EMI SET (∼32 dB) of the studied MoS2-rGO/ZnO nanocomposite owes to the combined effects of various relaxations and polarizations of ZnO and MoS2-rGO. The synergic effect, as well as dielectric and magnetic losses, furnish the high shielding effectiveness. The incorporation of ZnO nanoparticles in MoS2-rGO nanocomposite results in a spectacular average value of EMI SET, making it appropriate for widespread applications.

Non-toxic and biodegradable κ-carrageenan/ZnO hydrogel for adsorptive removal of norfloxacin: Optimization using response surface methodology

Antibiotic resistance is increasing globally due to increased prescription and easy dispensing of antibiotic drugs universally. Hence, to mitigate this effect, efficient, biodegradable, and non-toxic adsorbents are required to be developed. Carrageenan (CG), a natural polymer, having multiple functional groups, provides a backbone for crosslinking with borax and incorporation of ZnO nanoparticles that formed borax-cross-linked κ-carrageenan (CG/Bx/ZnO) hydrogel which is used for efficient adsorption of norfloxacin from water. Surface morphology of as-synthesized hydrogel revealed the rough surface, which was determined by FESEM. Surface area of CG/Bx/ZnO hydrogel was found to be 22.90 m2/g with 3.41 nm pore radius. Systematic batch adsorption studies revealed that 99.4 % removal efficiency could be achieved at a dosage level of 20 mg/L of norfloxacin with 10 mg of hydrogel at pH of 4 in 8 h at room temperature. Experimentally optimized key parameters affecting the overall efficiency of adsorption matched well with the results assessed from ANOVA using Box-Behnken composite design model. The adsorption process was well fitted with the pseudo-second-order model and Langmuir isotherm with 1282.05 mg/g adsorption capacity. Thermodynamic study results show that adsorption is spontaneous and endothermic. The CG/Bx/ZnO hydrogel demonstrated excellent repeatability with minimal loss in norfloxacin adsorption for seven cycles.

Active Biohybrid Nanocomposite Films Made from Chitosan, ZnO Nanoparticles, and Stearic Acid: Optimization Study to Develop Antibacterial Films for Food Packaging Application.

Chitosan is a biopolymer with great potential as food packaging due to its ability to create a film without additives and its better mechanical and antibacterial qualities compared to other biopolymers. However, chitosan film still has limitations due to its high moisture sensitivity and limited flexibility. Incorporating ZnO nanoparticles (ZnO-NPs) and stearic acid (SA) into chitosan films was expected to improve tensile strength, water vapor barrier, and antibacterial capabilities. This study aims to find the optimal formula for biohybrid nanocomposite films composed of chitosan, ZnO-NPs, and SA. The full factorial design approach-4 × 2 with 3 replicates, i.e., two independent variables, namely %ZnO-NPs at 4 levels (0%, 0.5%, 1%, and 3%, w/w) and %SA at 2 levels (0% and 5%, w/w)-was utilized to optimize chitosan-based biohybrid nanocomposite films, with the primary interests being antibacterial activities, water vapor barrier, and tensile strength. The incorporation of ZnO-NPs into chitosan films could increase antibacterial activity, while SA decreased it. The addition of SA had a good effect only in decreasing water vapor transmission rate (WVTR) values but a detrimental effect on other film properties mentioned above. The incorporation of ZnO-NPs enhanced all functional packaging properties of interest. The suggested solution of the optimization study has been validated. As a result, the formula with the inclusion of 1% ZnO-NPs without SA is optimal for the fabrication of active antibacterial films with excellent multifunctional packaging capabilities.

Fabrication and Characterization of ZnO Nanoparticles-Based Biocomposite Films Prepared Using Carboxymethyl Cellulose, Taro Mucilage, and Black Cumin Seed Oil for Evaluation of Antioxidant and Antimicrobial Activities

Food packaging is often made from plastic, which is usually obtained from non-renewable resources. The development of new technologies, like biocomposite films, has been driven in response to environmental concerns as well as consumer demands for eco-friendly, high-quality products derived from nature. Biocomposite films were prepared by incorporating taro mucilage, carboxymethyl cellulose (CMC), ZnO, glycerol, and black cumin seed (BCS) oil. The SEM results showed that the biocomposite films containing taro mucilage (TM), ZnO, and BCS oil had noticeably smoother surfaces. The FTIR analysis indicated the existence of a -OH group, N-H bond, alkaline group, C-C, C=N, C-H, C-O-H, and C-O-C bond formation, confirming the interaction of CMC, glycerol, BCS oil, ZnO nanoparticles, and TM. The results of TGA and DSC analysis suggest that incorporating ZnO nanoparticles, BCS oil, and TM into the CMC polymer matrix increased thermal stability. The addition of TM significantly increased water uptake capacity, antioxidative property, tensile strength, and elongation at break, with significantly decreased whiteness index and water solubility. The film inhibited the growth of Staphylococcus aureus and Escherichia coli as foodborne pathogens. The results suggest that the films can be potentially used as environment-friendly antioxidative and antimicrobial packaging films with additional research.

Evaluation of different parameters of zinc oxide nanoparticles on bionanocomposite film properties: a meta‐analysis

SummaryStudies on biopolymer‐based films incorporating ZnO nanoparticles (ZnO‐NPs) have been widely developed. However, results vary between studies, with some studies showing positive outcomes that may improve film properties and others showing opposite results. Moreover, the differences in the parameters of ZnO‐NPs, such as shape, size, concentration level and synthesis method, can affect the properties of bionanocomposite films. Therefore, this study aimed to evaluate the effect of different parameters of ZnO‐NPs on the characteristics of bionanocomposite films through a meta‐analysis. A database was developed from forty seven articles for the film characteristics such as water vapour permeability, tensile strength and elongation. The results showed that adding ZnO‐NPs improved all the observed film characteristics significantly (P &lt; 0.05) by using 1–100 nm ZnO synthesised commercially, physically or chemically with the rod morphology and the concentration level &lt;8.4%. This study reveals that using ZnO‐NPs with the appropriate parameters can produce the best film properties to extend the shelf life of food products.

UV Blocking and Oxygen Barrier Coatings Based on Polyvinyl Alcohol and Zinc Oxide Nanoparticles for Packaging Applications

Photodegradation and oxidation are major causes of the deterioration of food, resulting in darkening, off-flavors, and nutrient deficiency. To reduce this problem, novel functional polymeric materials are being developed to retain food’s light sensitivity. Nanofillers are also used in a polymeric film to produce effective UV blockings and oxygen barrier coatings so that the degradation of the food can be delayed, thereby increasing the shelf life. For this purpose, polyvinyl alcohol coatings were prepared by the incorporation of ZnO nanoparticles. Polyvinyl alcohol is a naturally excellent barrier against oxygen, and the addition of ZnO particles at the nanoscale size has demonstrated effective UV blocking capabilities. In this work, the hydrothermal technique is used to produce ZnO nanoparticles, and these produced particles are then incorporated into the polyvinyl alcohol to produce thin films. These films are characterized in terms of the compositional, macroscopic, microscopic, and optical properties via X-ray diffraction (XRD), FTIR, scanning electron microscopy (SEM), and thermogravimetric analysis (TGA), as well as UV–VIS spectroscopy. ZnO nanoparticles at different concentrations were incorporated into the PVA solution, and the films were processed via the blade coating method. With the addition of ZnO, the oxygen transmission rate (OTR) of pure PVA was not altered and remained stable, and the lowest OTR was recorded as 0.65 cm3/m2·day·bar. Furthermore, the addition of ZnO increased the water contact angle (WCA) of PVA, and the highest WCA was recorded to be around more than 70°. Due to this, water permeability decreased. Additionally, PVA/ZnO films were highly flexible and bendable and maintained the OTR even after going through bending cycles of 20K. Furthermore, the addition of ZnO showed a significant UV blocking effect and blocked the rays below a wavelength of 380 nm. Finally, the optimized films were used for packaging applications, and it was observed that the packaged apple remained fresh and unoxidized for a longer period as compared with the piece of apple without packaging. Thus, based on these results, the PVA/ZnO films are ideally suited for packaging purposes and can effectively enhance the shelf life of food.

Incorporation of ZnO Nanoparticle in Starch-Based Edible Coating Matrix for Preservation of Red Globe (&lt;i&gt;Vitis vinifera&lt;/i&gt; Linn.)

Red Grapes or Red Globe (Vitis vinifera Linn.) is a delicate fruit easily damaged and bruised. The changes in the texture of Red Globe flesh and shrinkage happened if it kept too long, even in the low temperature. This condition is disadvantageous, especially for fruit sellers or vendors. Therefore, the edible coating is important to help the fruit's freshness by protecting its surface with its coating. Starch is one of the sources of an edible coating obtained from jackfruit seed since it contains 52.53% of amylase. This study aimed to examine the potential of jackfruit seed starch as an edible coating for the preservation of Red Globe. Furthermore, the incorporation of ZnO nanoparticles in the edible coating matrix was also examined for vitamin C of the Red Globe since ZnO has selective toxicity toward bacteria. The edible coating incorporated with ZnO nanoparticle was characterized based on ash content, water content, FTIR, and SEM. The results showed that ZnO nanoparticle was successfully incorporated in the edible coating matrix. In addition, the effect of edible coating on Red Globe freshness was also observed.