Petal Extract Research Articles

Functional, structural, and rheological properties of the complexes containing sunflower petal extract with dairy and plant-based proteins

This study aims to investigate the impact of sunflower petal extract (SFE) on the functional and structural properties of sodium caseinate and chickpea proteins. For this purpose, 3.5 % of sodium caseinate solution and 3.5 % of protein extracted from chickpea powder were prepared in phosphate buffer (pH = 7). SFE was used at different concentrations, from 1 to 3 % in different protein solutions and functional, structural and rheological properties were measured. The results revealed that complexation of SFE with different proteins can enhance the antioxidant, foaming properties, solubility, emulsion activity, emulsion stability, viscoelastic behavior, and can decrease surface hydrophobicity. FTIR and docking results showed that the most bonding type was non-covalent bonds. Major phenolic compounds containing heliannone A, B, and kaempferol had strong affinity with sodium caseinate, and then chickpea protein. Therefore, the results demonstrated that SFE and its complexes had appropriate emulsifying properties that reduces interfacial tension in the water/oil interface.

Enhancing Wound Healing with Nanohydrogel-Entrapped Plant Extracts and Nanosilver: An In Vitro Investigation.

Wound healing is a complex process that can be improved through advanced biomedical approaches. Incorporating nanopolymers and plant extracts into wound dressings offers a favorable strategy for promoting tissue repair. Nanopolymers provide a controlled environment for sustained drug release while also protecting the wound from external contaminants. When combined with bioactive compounds from plant extracts, which possess antioxidant, anti-inflammatory, and antimicrobial properties, this hybrid approach can accelerate healing, reduce infection, and improve tissue regeneration. Hence, in this study, we have synthesized alginate/gelatin hydrogel blended with only nanosilver (Alg/gel-Ag) and with nanosilver and plant extracts like aloe vera, curcumin, plantain peel extract, and Calendula flower petal extract (Alg/gel-AgP). The synthesized hydrogels were characterized using different photophysical tools, and the cytotoxicity effect was studied using a fibroblast cell line (V79). The antibacterial effect of the hydrogels was also observed against E. coli and S. aureus, determining the MIC and MBC. The wound healing in vitro was also assessed using scratch assay which depicted a rapid wound closure for Alg/gel-AgP compared to the untreated control and Alg/gel-Ag. The combined effect between nanotechnology and natural extracts represents a novel and effective approach for enhancing the wound healing process.

Biological Response of Treatment with Saffron Petal Extract on Cytokine-Induced Oxidative Stress and Inflammation in the Caco-2/Human Leukemia Monocytic Co-Culture Model.

The pathogenesis of Inflammatory Bowel Disease (IBD) involves complex mechanisms, including immune dysregulation, gut microbiota imbalances, oxidative stress, and defects in the gastrointestinal mucosal barrier. Current treatments for IBD often have significant limitations and adverse side effects, prompting a search for alternative therapeutic strategies. Natural products with anti-inflammatory and antioxidant properties have demonstrated potential for IBD management. There is increasing interest in exploring food industry waste as a source of bioactive molecules with healthcare applications. In this study, a co-culture system of Caco-2 cells and PMA-differentiated THP-1 macrophages was used to simulate the human intestinal microenvironment. Inflammation was induced using TNF-α and IFN-γ, followed by treatment with Saffron Petal Extract (SPE). The results demonstrated that SPE significantly attenuated oxidative stress and inflammation by downregulating the expression of pro-inflammatory mediators such as iNOS, COX-2, IL-1β, and IL-6 via modulation of the NF-κB pathway. Given that NF-κB is a key regulator of macrophage-driven inflammation, our findings support further investigation of SPE as a potential complementary therapeutic agent for IBD treatment.

EFFECTIVENESS OF ROSELLA AS AN ANTI-INFLAMMATORY

Rosella flower (Hibiscus sabdariffa L.) can be used in the health sector. Rosella petal extract contains flavonoids such as gossypetin, hibiscetin, sabdaretine, alkaloids, and saponins. Rosella has properties such as an antiseptic, diuretic, anti-inflammatory, antibacterial, antioxidant, and can increase endurance. This paper discusses the anti-inflammatory effect of the rosella plant. The purpose of this article is to describe the effectiveness of rosella plant as an anti-inflammatory. This article collects research results from journals, textbooks, and websites accessed through the National Library of Medicine and Google scholar databases as a method. The reference source inclusion criteria are published in 2012-2022 with topics that are in line with the effectiveness of rosella as an anti-inflammatory. The reference source exclusion criteria were literature published before 2012. A total of 25 references were found, 15 references were selected, and 10 references were excluded. The studies have shown that the content of rosella flower extract is able to inhibit the cyclooxygenase enzyme thereby inhibiting the synthesis of inflammatory mediators, namely leukotrienes and prostaglandins and reducing the number of neutrophils so that it can accelerate the wound healing process, however administration of high doses of rosella extract is less effective as an anti-inflammatory because the levels of flavonoids decreased activity at high extract concentrations.

Graphene oxide dispersed rose-petals based green chemistry synthesis of hybrid composite for novel spectroscopic applications

Rosa Santana family includes the rose, a highly prized decorative plant having symbolic, cultural, and commercial value. The exploration of graphene-based nanocomposites has expanded significantly, with recent research focusing on integrating these materials into natural and sustainable matrices. This study investigates the dispersion of graphene oxide (GO) within the biological structure of rose-petals, representing a novel approach to developing eco-friendly nanocomposites. The rich colours of the roses are ascribed to pigments such as flavanols, carotenoids, and anthocyanin. Carotenoids, which are found in natural colours including yellow, orange, violet, as well as another ingredient found in rose petals. By leveraging the inherent properties of rose petals, such as their unique properties and surface morphology and biocompatibility, this work highlights the potential of GO to enhance the mechanical, electrical, and optical characteristics of the composite. Advanced characterization techniques, including scanning electron microscopy (SEM), and electrochemical analysis, are employed to understand the interaction between GO and the rose petal substrate. The techniques of FT-IR, EDS, XRD, SEM, energy band gap, and CV were used in characterize the synthesis of doped graphene using rose petals extract. The findings underscore the synergistic effects of this natural-synthetic hybrid system, opening pathways to innovative applications in flexible electronics, biosensors, and sustainable material design. The novelty of this research lies in its foundational exploration of integrating graphene oxide with organic substrates like rose petals, offering a new direction for the development of environmentally benign graphene nanocomposites. Green chemistry based novel nanocomposite may open up new avenues for production of graphene oxide homogenious dispersion with rose-petal extract.

Photocatalytic degradation of toxic organic dye (Methylene blue) using ZnO nanoparticles synthesized with petals extract of Rosa rubiginosa plant

Photocatalytic degradation of toxic organic dye (Methylene blue) using ZnO nanoparticles synthesized with petals extract of Rosa rubiginosa plant

Selective extraction of Quercetin from rose petal extracts using poly (acrylamide-co-ethylene glycol dimethylacrylate) based magnetic molecularly imprinted polymer

Under ultrasound irradiation, a highly selective Magnetic Molecularly Imprinted Polymer (MMIP) was synthesized by polymerizing monomers on magnetite. The Density Functional Theory was utilized for the selection of suitable monomers based on binding energy interaction between quercetin and monomers (Acrylamide, Acrylonitrile, Methacrylic Acid). Quercetin served as the template molecule, while acrylamide was used as the functional monomer, and a mixture of DMSO and water was employed as the porogen solvent. This study aims to synthesize and evaluate the effectiveness of MMIP and analyze its adsorption isotherm and kinetics. It was observed that the Freundlich model supports the adsorption of quercetin on MMIP, and the kinetic data correlates better with the Pseudo-first-order kinetic model. The MMIP exhibited a pronounced selectivity in the adsorption of quercetin with a maximum adsorption capacity of 10.07 mg g-1 in 30 min. Furthermore, the physiochemical properties of synthesized sorbent were undergone for characterization using FESEM, EDX, XRD, FTIR, VSM, and TGA. Finally, real-time determination of quercetin was carried out using rose petal extract, integrating MMIP adsorption followed by HPLC detection. The results suggest that MMIP is a promising material for the real-time determination of quercetin from rose petal extract.

Intelligent locust bean gum-k-carrageenan nanofibrous mats with Rosa canina petal anthocyanins and chitosan nanoparticles: Preparation, characterization, and application for monitoring of beef meat freshness

The objectives of the present experiment were to add Rosa canina petal extract (RCE, 3.5%) and chitosan nanoparticles (CNP, 1.5%) into the locust bean gum-kappa-carrageenan (LBG-KC) nanofiber mats and to examine their utilization for the freshness tracking of beef meat during the 6-day storage period. The surface morphology analysis of nanofibers using the scanning electron microscope showed that all developed nanofibers were cylindrical, uniformly disordered network structures with smooth surfaces. The tensile strength, elongation at break, water vapor permeability, water solubility, and moisture content of RCE/CNP-loaded nanofiber mats were recorded to be 10.00–31.77 MPa, 16.55%–22.98%, 5.04–9.18 × 10‾5 g mm/m2 h Pa, 3.80%–10.08%, and 2.10%–4.89%, respectively. The LBG-KC + RCE 3.5% and LBG-KC + RCE 3.5% + CNP 1.5% nanofibers were red, dark blue, green, and brown at pH values 1–6, 7–8, 9, and 10–12, respectively. After 4 days of beef meat storage at refrigerated conditions, the total viable count, pH, and total volatile basic nitrogen were 7.24 log CFU/g, 7.11, and 28.89 mg N/100 g, respectively. Moreover, on the 0th day, the pH-sensitive indicators presented a white color and after 4 days of meat storage, the indicator color changed to dark blue, which could indicate beef meat spoilage.

Designing and Characterizing a Multipurpose Facial Scrub Infused with Chrysopogon zizanioides, Prunus dulcis and Santalum album

This study focuses on the design and characterization of a herbal scrub utilizing natural excipients for skincare applications. The primary objective was to develop a safe and effective product capable of addressing common skin issues such as wrinkles, acne, and excessive oil production. The scrub formulation incorporated a blend of carefully selected excipients, including aloevera, amla, coriander, liquorice, sandalwood, lemon peel powder, khus-khus, almond oil, rose petal extract, and black catechu. Various parameters, including physical appearance, viscosity, pH, spreadability, irritability, stability, and microbial assay, were systematically assessed to comprehensively evaluate the scrub. The results revealed that the scrub demonstrated outstanding cooling effects, skin lightening properties, and efficacy in preventing new pimples. It exhibited a pleasant odor, possessed a brown color, and proved non-irritating to the skin. The scrub's texture was smooth, facilitating easy spreading. In conclusion, the formulated herbal scrub emerged as a safe and efficacious exfoliating product, offering the benefits of glowing skin without any adverse effects. Overall, this research contributes valuable insights into the development of a skincare solution that combines natural ingredients for optimal effectiveness and user satisfaction.

Evaluation of anti-aging and antioxidant properties of a new rose variety, Ever-rose

BackgroundRose flowers contain active ingredients such as flavonoids and volatile oils and are acknowledged to be good natural resources owing to their anti-aging and antioxidant properties. In this study, we develop four new rose varieties (named Ever-rose) that are fragrant, pest resistant, and easy to grow. Subsequently, we evaluate the properties of Ever-rose and its potential for use in anti-aging products.MethodsThe chemical composition of Ever-rose was determined using ultra-high-performance liquid chromatography triple time-of-flight mass spectrometry/mass spectrometry. The antioxidant activity of the Ever-rose extract was evaluated using various assays, including superoxide dismutase activity, 2,2-diphenyl-1-picrylhydrazyl radical-scavenging capacity, and xanthine oxidase activity. The variations in proteolytic matrix metalloproteinase-1 expression, collagen content after ultraviolet (UV) irradiation, and reactive-oxygen-species (ROS) levels after infrared A (IRA) treatment were evaluated. The variations in cell elasticity were assessed via atomic force microscopy.ResultsThe petal extracts of Ever-rose (named ER004(P), ER011(P), ER012(P), and ER015(P)) showed good antioxidant activity. They effectively inhibited UV irradiation-induced MMP-1 expression and IRA irradiation-induced increase in mitochondrial ROS levels. Additionally, they inhibited variations in cell shape and elasticity as aging progressed. In particular, ER011(P) demonstrated the best anti-aging and antioxidant effects.ConclusionThe newly developed Ever-rose showed excellent antioxidant and anti-aging effects. In particular, ER011(P) demonstrated the best properties owing to its high antioxidant content. Hence, it exhibits significant potential as a functional cosmetic ingredient.Graphical

In vitro and in vivo evaluation of the diabetic wound healing properties of Saffron (Crocus Sativus L.) petals

Wound healing is a complex process orchestrated by interactions between a variety of cell types, including keratinocytes, fibroblasts, endothelial cells, inflammatory cells, and bioactive factors such as extracellular matrix (ECM) components, growth factors, and cytokines. Chronic wounds exhibit delayed proliferative phase initiation, reduced angiogenesis, impaired ECM synthesis, and persistent inflammatory response. Chronic wounds are one of the main challenges to the healthcare system worldwide, with a high cost for medical services. Hence, investigation of new approaches to accelerate wound healing is essential. Phytomedicines are considered as potential agents for improving the wound healing by accelerating epithelization, collagen synthesis, and angiogenesis. These natural compounds have various advantages including availability, ease of application, and high effectiveness in wound managment. This study aimed to investigate the biological effects of saffron or Crocus sativus L. (C. sativus) petal extract on cell survival, migration, and angiogenesis using MTT, scratch and in vitro tube formation assays. Moreover, the expression of collagen type I alpha 1 (COL1A1) and vascular endothelial growth factor (VEGF) were evaluated in human dermal fibroblasts (HDF)s and human umbilical vein endothelial cells (HUVEC)s, respectively. The effect of the C. sativus extract on the skin of diabetic mice was also monitored. The results showed that C. sativus petal extract promoted the viability and migration of HDFs and HUVECs. Moreover, C. sativus petal extract enhanced the formation of tube-like structures by HUVECs cultured on the Matrigel basement membrane matrix, indicating its potential to stimulate angiogenesis. Gene expression studies have shown the the C. sativus extract increases wound healing by upregulation of COL1A1 and VEGF, which are crucial factors involved in collagen deposition, epithelialization, and angiogenesis. Histological analysis revealed that C. sativus petal extract enhanced vascularity and increased the number of fibroblasts and collagen synthesis, ultimately accelerating wound closure compared to wounds treated with eucerin and commercial ointment in diabetic mice. Therefore, C. sativus petal extract has potential as a herbal treatment to improve the healing of diabetic wounds.

Antioxidant response of Calendula officinalis L. assisted synthesized zinc oxide nanoparticles

The over-production of free radicals in the body causes oxidant damage in the body. Currently, zinc oxide nanoparticles (ZnO NPs) are gaining attention of most scientists because of their excellent physical, chemical, and biological properties. In this work, the ZnO NPs were synthesized using the petal extract of C. officinalis L. An absorbance spectrum of the synthesized ZnO NPs was recorded using an ultraviolet-visible (UV–Vis) spectrophotometer. The absorbance band around 368 nm confirms the formation of ZnO NPs. The transmission electron microscopy (TEM) analysis clearly shows that the most of the ZnO NPs are spherical in shape with average particle size ∼ 16 nm. The field emission scanning electron microscope (FE-SEM) result demonstrates the spherical morphology with large agglomeration of the particles. The energy-dispersive x-ray spectroscopy (EDS) result confirms the presence of Zn in the synthesized NPs’. The x-ray diffraction (XRD) peaks represent the crystalline structure of the ZnO NPs with average particle size ∼ 27.22 nm. Fourier transform infra-red (FT-IR) spectrum of synthesized ZnO NPs was recorded in the range of 4000-500 cm−1. The ester and carboxylic groups were found at 1017 cm−1, 952 cm−1, 688 cm−1, 609 cm−1, and 514 cm−1 due to the presence of Zn-O band stretch in the FT-IR spectrum. Further synthesized material was evaluated by 2, 2-diphenyl-1-picrylhydrazyl (DPPH) assay to evaluate its antioxidant activity. It showed that ZnO NPs exhibited significant antioxidant activity through scavenging DPPH free radicals. Thus, it could be seen that the synthesis of naturally occurring plant product ZnO NPs acts as an alternative chemical antioxidant. Hence, the herbal synthesized ZnO NPs are proven to be a potent antioxidant agent and can be used in several medicinal applications.

Effect of Nymphaea alba Petal Extract on Multidrug Resistant Bacteria

This study aimed to determine the antibacterial effect of the extract of Nymphaea alba petals, and if antibacterial activities are present then the Minimum Inhibitory Concentration (MIC) of the extract is determined. Currently multidrug resistant bacteria are a major concern for clinicians as most conventional antibiotics do not work against MDR strains and infections with MDR strains are increasing day by day, with many resulting in death. This study focused mainly on the antibacterial activity of ethanol extract. Our study showed that the crude extract is significantly effective against MDR Pseudomonas aeruginosa and Klebsiella pneumoniae with MIC value <0.78 mg/ml. This confirms the effectiveness of this extract against MDR bacteria.

Rose Petal Extract Ameliorates Obesity in High Fat Diet-Induced Obese Mice.

In Asia, Rosa spp. has been used in traditional medicine for the treatment of osteoarthritis, rheumatoid arthritis, and edema. In this study, we investigated the effect of rose petal extract (RPE) on high fat diet (HFD)-induced obesity in mice. C57BL/6J mice were fed with either an AIN-93G diet (normal control), a 60% HFD, or a HFD plus supplementation with RPE at 100 or 200 mg/kg body weight (HFD+R100, HFD+R200) for 14 weeks. The HFD increased the body weight gain, liver and fat weight, lipid profiles (total cholesterol, triglyceride, high density lipoprotein cholesterol, and low density lipoprotein cholesterol), and the serum aspartate aminotransferase and alanine aminotransferase levels of mice, while RPE supplementation significantly decreased these parameters compared with the HFD group. Furthermore, the HFD increased the protein expressions of adipogenesis- and lipogenesis-related factors and decreased the protein expression of lipolysis- and energy metabolism-related factors. Conversely, RPE supplementation significantly decreased the protein expression of adipogenesis- and lipogenesis-related factors and increased the protein expression of lipolysis- and energy metabolism-related factors compared to the HFD group. Taken together, the results provide preliminary evidence for the potential protective effects of the RPE against obesity.

Biogenic fabrication and multifunctional therapeutic applications of silver nanoparticles synthesized from rose petal extract

Abstract This study explores a novel, eco-friendly approach to silver nanoparticle (AgNP) synthesis by using rose petal (RP) extracts. Unlike traditional chemical synthesis, this method reduces silver ions (Ag+) to elemental silver (Ag0) with RP, facilitating nanoparticle stabilization. RP-AgNPs were structurally characterized using UV/Vis (ultraviolet/visible) spectroscopy, Fourier transform infrared spectroscopy, dynamic light scattering, zeta potential, transmission electron microscopy, scanning electron microscopy, and energy dispersive X-ray spectroscopy which confirmed the synthesis of predominantly spherical to oval RP-AgNPs, with a distinct absorption peak at 410 nm as observed in UV/Vis spectra. The NPs demonstrated exceptional antibacterial efficacy against Escherichia coli and Staphylococcus aureus (inhibitory zones of 12.5 ± 0.20 and 14 ± 0.67 mm at 50 µg) and potent antibiofilm activity. Crucially, they also exhibited selective cytotoxicity toward HeLa cervical cancer cells when assessed by viability assays, fluorescence imaging, and flow cytometry. These findings underscore the potential of green synthesized AgNPs for future biomedical applications in areas such as infection control and cancer treatment.

Flower color modification in Torenia fournieri by genetic engineering of betacyanin pigments

BackgroundBetalains are reddish and yellow pigments that accumulate in a few plant species of the order Caryophyllales. These pigments have antioxidant and medicinal properties and can be used as functional foods. They also enhance resistance to stress or disease in crops. Several plant species belonging to other orders have been genetically engineered to express betalain pigments. Betalains can also be used for flower color modification in ornamental plants, as they confer vivid colors, like red and yellow. To date, betalain engineering to modify the color of Torenia fournieri—or wishbone flower—a popular ornamental plant, has not been attempted.ResultsWe report the production of purple-reddish-flowered torenia plants from the purple torenia cultivar “Crown Violet.” Three betalain-biosynthetic genes encoding CYP76AD1, dihydroxyphenylalanine (DOPA) 4,5-dioxygenase (DOD), and cyclo-DOPA 5-O-glucosyltransferase (5GT) were constitutively ectopically expressed under the cauliflower mosaic virus (CaMV) 35S promoter, and their expression was confirmed by quantitative real-time PCR (qRT-PCR) analysis. The color traits, measured by spectrophotometric colorimeter and spectral absorbance of fresh petal extracts, revealed a successful flower color modification from purple to reddish. Red pigmentation was also observed in whole plants. LC-DAD-MS and HPLC analyses confirmed that the additional accumulated pigments were betacyanins—mainly betanin (betanidin 5-O-glucoside) and, to a lesser extent, isobetanin (isobetanidin 5-O-glucoside). The five endogenous anthocyanins in torenia flower petals were also detected.ConclusionsThis study demonstrates the possibility of foreign betacyanin accumulation in addition to native pigments in torenia, a popular garden bedding plant. To our knowledge, this is the first report presenting engineered expression of betalain pigments in the family Linderniaceae. Genetic engineering of betalains would be valuable in increasing the flower color variation in future breeding programs for torenia.

Potensi Bunga Anggrek Cymbidium Golden Boy sebagai Sumber Antioksidan dan Aplikasinya pada Flower Leather

Orchid flowers are believed to be an antioxidant source, however, the antioxidant activity of the Cymbidium Golden Boy (CGB) orchid has not been identified. The antioxidant potential can be applied to flower leather products, and a main reason behind the idea is the valorization of agricultural waste. The aim of this research is to study phenol content and antioxidant capacity of ethanol extracts of CGB orchid petals. Additionally, this study aimed to determine the best formulation for flower leather products with a combination of carrageenan and gum arabic based on organoleptic acceptance. This research was conducted by extracting CGB orchid flowers using ethanol, and total phenol and antioxidant activity of the extracts were determined. Moreover, the flower leather products were mad from CGB orchid flowers as the raw material, accroding to a Factorial Randomized Block Design using two factors as follows: carrageenan concentration (0, 0.3, 0.5, and 0.7%) and gum arabic concentration (0.9, 1.2, and 1.5%). Flower leather samples were analyzed for moisture content, tensile strength, total dissolved solid, color intensity, and sensory. The ethanol extract of CGB orchid flowers showed antioxidant capacity up to 23.88 ppm and high phenolic content which is equal to 15.32 mg GAE/g. The differences between carrageenan and arabic gum concentration showed significant effect on water content and dissolve solid, but they did not affect on tensile strength and color intensity. The best treatment of flower leather according to panelist evaluation was those prepared from carrageenan 0.5% and arabic gum 0.9%, reaching tensile strength 4.86 N, brightness level (L) 40.1, (a+) +5.7, (+b) 23.7, water content 19.18%, aroma score 3.76 (slight flowery), taste 4.84 (pleasant), and texture 4.56 (approaching chewiness).

State-of-the-art fabrication of crystalline zinc oxide for carbamate adsorption: Experimental, optimization, and molecular dynamics simulation

The widespread use of hazardous chemicals in residential and agricultural activities has given rise to a significant global concern regarding pesticide pollution. Present research highlighted the adsorption of carbaryl (CBRL), a carbamate-type insecticide, using zinc oxide nanoparticles (ZnONPs) synthesized from Helianthus annuus flower petals. The study involved synthesizing ZnONPs through a sol-gel process using flower petal extracts, followed by characterization of the nanoparticles. The ZnONPs were then applied for adsorption of CBRL, with mechanisms explored through isotherms, kinetics, thermodynamics insights into CBRL-ZnONPs interactions. The Box–Behnken Design (BBD) of the Response Surface Methodology (RSM) was conducted to optimize the settings for CBRL removal during the batch method adsorption studies. Additionally, molecular dynamic simulation, and density functional theory (DFT) techniques provided deeper insights into the adsorption mechanism. The adsorption process is most precisely fitted linearly as Freundlich isotherm (R2 = 0.9934). By using the Langmuir isotherm, the adsorption demonstrated a noteworthy CBRL adsorption capacity of 158.34 mg/g. The kinetic analysis indicated that the process followed the pseudo-second-order model (R2 = 0.9978). The thermodynamic parameters suggested an endothermic (ΔHo = 36.279 kJ/mol), entropy-driven, and non-spontaneous adsorption process. Nevertheless, the RSM optimization reveals that 99.983% of the CBRL was removed. Furthermore, throughout the process of adsorbent stability via regeneration, ethanol appears to be the most effective eluting agent, exhibiting the 58.33% desorption efficiency. The DFT analyzes combined visual and energetic insight into the molecular dynamics of the CBRL-ZnONPs system, revealed complex interactions and higher binding energies in complex-I. With the support of nanoparticle-based adsorbent, this research presents an in-depth overview of the adsorption of CBRL by ZnONPs, and important insights for creating efficient pollution mitigation strategies.

Development of an active biogenic silver nanoparticles composite film based on berry wax and chitosan for rabbit meat preservation

This study aimed to develop an eco-friendly active biogenic nanocomposite film through the complexation of silver nanoparticles (AgNPs), berry wax (BYW), and chitosan (CT) for maintiaing rabbit functional meat freshness. AgNPs were synthesized using Chinese medicinal paeoniaceae petal extract, and they were loaded at various concentrations (0.5 %, 0.75 %, 1.0 %, 1.25 %, and 1.5 % based on CT w/w) into the CT/BYW complex. The AgNPs exhibited an average size of 55 nm and a zeta potential of −26.3 mV with a spherical shape. The particle size and zeta potential of the film dispersions were 370.5–529.5 nm and 40.17–49.345 mV, respectively. FTIR, SEM, and XRD results showed compatibility among AgNPs and CT/BYW structure. The film water vapor permeability and light transparency decreased from 6.5 to 3.5 and 10 to 0.78 %, respectively, while opacity increased from 1.76 to 9.96 % with increasing concentrations of AgNPs. Among them, the film composite CT/BYW/AgNPs1.5% had better antioxidant and antibacterial properties, which was then applied for rabbit meat preservation at 4 °C for 16 days of storage. CT/BYW/AgNPs1.25%-packed sample had lower values of TVB-N, TBARS, TVC, and pH with greater retention of color properties compared to the control sample, which describes its ability to maintain meat freshness.

Development of antioxidant film based on gelatin and carboxymethylcellulose incorporated with Tecoma stans (L.) Juss. ex Kunth Petals extract for biodegradable food packaging

The aim of this research was to develop a novel combination of antioxidant blended film for use as biodegradable packaging in the food industry. The antioxidant film was prepared based on gelatin (G) and carboxymethyl cellulose (CMC) incorporated with Tecoma stans (L.) Juss. ex Kunth petals extract (TKE) at various concentrations (0.5, 1.0, and 2.0 mg∙L‒1) via solution casting method. The structural and surface morphology of G/CMC-TKE film were characterized using FTIR spectrometry technique and scanning electron microscopy (SEM), including determining antioxidant activity, water solubility, water vapor permeability, and biodegradability. According to FTIR analysis, the significant interaction between the gelatin and CMC chain is associated with hydrogen bonding. Adding TKE into the blended films significantly increased their roughness, thickness and antioxidant activity while decreasing their water solubility and water vapor transmission. Likewise, the biodegradability of the films containing antioxidants exhibited greater degradation values than the pure G/CMC film, and all of the biofilms was entirely degraded (>80%) in 14 days. The G/CMC-TKE 2.0 demonstrated the best antioxidant (74.47%), biodegradable activity (95.85% in 14 days), and the lowest water solubility (61.80%) and water vapor transmission rate (3.2483 g∙m‒2∙day‒1), which could be a feasible candidate for the food active packaging.