Ana Elisa Vilicev Italiano, Ricardo Luis Tranquilin, Danny Omar Mendoza Marin, Márcio Luiz Dos Santos, Luís Geraldo Vaz
{"title":"Synthesis of Calcium Phosphate by Microwave Hydrothermal Method: Physicochemical and Morphological Characterization.","authors":"Ana Elisa Vilicev Italiano, Ricardo Luis Tranquilin, Danny Omar Mendoza Marin, Márcio Luiz Dos Santos, Luís Geraldo Vaz","doi":"10.1155/2024/2167066","DOIUrl":"10.1155/2024/2167066","url":null,"abstract":"<p><p>Bone loss in the alveolar ridge is a factor widely studied by dentists in implant surgeries, as it poses a major challenge for aesthetic and functional recovery in patients with large maxillary bone defects. Synthetic biomaterials function as grafts designed to replace and remodel bone tissue. Calcium phosphate is a biomaterial that has good properties such as biocompatibility and bioactivity, making it a reference in bone replacement treatments. A synthetic biomaterial such as calcium phosphate can be obtained by various synthesis techniques. The microwave hydrothermal method (HTMO) is a pathway that allows changes in synthesis parameters and significantly increases the transmission efficiency of materials such as synthetic calcium phosphate derivatives. The study proposes obtaining a biomaterial for bone grafting based on calcium phosphate by the microwave HTMO and evaluating its microstructural and physicochemical characteristics. The parameters tested in this process were temperature and reaction time. The calcium phosphate particulates were obtained by the microwave HTMO at temperatures of 110°C and 130°C for 60 min and calcined at 300°C, 500°C, and 700°C. Microstructural and physicochemical characterization analyses were carried out using scanning electron microscopy, Fourier transform infrared, and X-ray diffraction. The results obtained showed the presence of more than one calcium phosphate biological interest phase, as hydroxyapatite (HA), tricalcium phosphate (<i>β</i>-TCP), and octacalcium phosphate (OCP), highlighting with increasing calcination temperature, the <i>β</i>-TCP phase becomes evident. The proposed synthesis method was efficient in obtaining a biomaterial with suitable physical and chemical characteristics, with an association of crystalline phases of biological interest related to the increase in synthesis temperature and calcination temperature.</p>","PeriodicalId":13704,"journal":{"name":"International Journal of Biomaterials","volume":"2024 ","pages":"2167066"},"PeriodicalIF":3.0,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11561177/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142619770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wassan Dawood Musa Al-Obeidi, Dhafer F Al-Rawi, Loay H Ali
{"title":"Production of Single-Cell Oil from a Local Isolate <i>Bacillus subtilis</i> Using Palm Fronds.","authors":"Wassan Dawood Musa Al-Obeidi, Dhafer F Al-Rawi, Loay H Ali","doi":"10.1155/2023/8882842","DOIUrl":"10.1155/2023/8882842","url":null,"abstract":"<p><p>This study, conducted at the Department of Biology, University of Anbar, Iraq, focuses on addressing the escalating issue of contamination and aims to acquire microbial oils to alleviate the global shortage in plant and animal oil production, utilizing environmental waste as a carbon source to reduce global pollution and select efficient local bacterial isolates of <i>Bacillus subtilis</i> for the production of single-cell oil (SCO) using local soil and environmental waste as a carbon source. Four isolates were selected as the best in producing single-cell oil, with the isolate with code C4 standing out as it recorded the highest production. It is worth noting that all these isolates belong to the bacteria type <i>Bacillus subtilis</i>. Palm fronds were found to be the most suitable environmental residue for SCO production compared to other waste materials (wheat straw and wheat bran). Submerged cultures were used to improve SCO production, with optimal conditions determined as pH 7, a temperature of 30°C, carbon source concentration of 3 g/100 ml, inoculum volume of 3 ml/100 ml, inoculum density of 20 × 10<sup>7</sup> cells, and an incubation period of 72 hours. The Soxhlet extraction method was used to obtain the oil, which was found to contain high percentages of unsaturated fatty acids, particularly linoleic acid (46.030%) and palmitoleic acid (16.579%). The oil was highly soluble in chloroform and ethanol but insoluble in water. The saponification test indicated the potential for soap production from the oil. This comprehensive research addresses the need for locally sourced and sustainable SCO production, offering insights into the selection of efficient bacterial isolates, the optimization of cultivation conditions, and the valuable properties of the resulting SCO. The significance of this study lies in the production of single-cell oil from soil-isolated <i>Bacillus subtilis</i> bacteria for use in food applications.</p>","PeriodicalId":13704,"journal":{"name":"International Journal of Biomaterials","volume":"2023 ","pages":"8882842"},"PeriodicalIF":3.1,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10632059/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72014200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Citric Acid Catalyst-Assisted Bioactive Glass with Hydrogen Peroxide for <i>In Vitro</i> Bioactivity and Biodegradability Using Sol-Gel Method.","authors":"Tsion Chuni Aklilu, Bethelhem Gashaw Ewnete, Kena Dachasa, Kanate Sanbaba, Demeke Tesfaye, Tadele Hunde Wondimu, Jung Yong Kim, Ketema Tafess Tulu, Shimelis Lemma, Balisa Mosisa Ejeta, Fetene Fufa Bakare","doi":"10.1155/2023/9911205","DOIUrl":"https://doi.org/10.1155/2023/9911205","url":null,"abstract":"<p><p>In this study, carbon-free and completely soluble hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) was utilized in place of conventional surfactants as a pore-forming agent. Citric acid was also used in low concentration for the hydrolysis reaction. A sol-gel method was used to prepare bioactive glass (BG) specimens of H<sub>2</sub>O<sub>2</sub>-untreated BG, 1M, 2M, and 3M H<sub>2</sub>O<sub>2</sub>-treated BGs. X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), energy-dispersive spectroscopy (EDS), and nitrogen adsorption/desorption isotherm with the Brunauer-Emmett-Teller (BET) method were used for analyzing the samples' phase, surface morphology, chemical composition, constituent composition, pore size, and specific surface area respectively. In vitro bioactivity, as well as biodegradability tests, was performed on samples by immersing them in simulated body fluid (SBF) solution. According to the results, BG particles treated with 2 M H<sub>2</sub>O<sub>2</sub> exhibited higher specific surface area (SSA), which is 189.55 cc/g, and better in vitro bioactivity and biodegradability.</p>","PeriodicalId":13704,"journal":{"name":"International Journal of Biomaterials","volume":"2023 ","pages":"9911205"},"PeriodicalIF":3.1,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10624554/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71481189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dhiaa J Aldabagh, Thair L Alzubadi, Akram F Alhuwaizi
{"title":"Tribology of Coated 316L SS by Various Nanoparticles.","authors":"Dhiaa J Aldabagh, Thair L Alzubadi, Akram F Alhuwaizi","doi":"10.1155/2023/6676473","DOIUrl":"10.1155/2023/6676473","url":null,"abstract":"<p><strong>Background: </strong>Nanocoating of biomedical materials may be considered the most essential developing field recently, primarily directed at improving their tribological behaviors that enhance their performance and durability. In orthodontics, as in many medical fields, friction reduction (by nanocoatings) among different orthodontic components is considered a substantial milestone in the development of biomedical technology that reduces orthodontic treatment time. The objective of the current research was to explore the tribological behavior, namely, friction of nanocoated thin layer by tantalum (Ta), niobium (Nb), and vanadium (V) manufactured using plasma sputtering at 1, 2, and 3 hours on substrates made of 316L stainless steel (SS), which is thought to be one of the most popular alloys for stainless steel orthodontic archwires. The friction of coated 316L SS archwires coated with Ta, Nb, and V plasma sputtering is hardly mentioned in the literature as of yet.</p><p><strong>Results: </strong>An oscillating pin-on-plate tribological test using a computerized tribometer was performed by applying a load of 1 N for 20 minutes under the dry condition at room temperature (25°C) to understand their role in the tribological behavior of the bulk material. Ta and Nb were found to reduce the friction of their SS substrate significantly (45 and 55%, respectively), while V was found to deteriorate the friction of its substrate. Moreover, sputtering time had no substantial role in the friction reduction of coatings.</p><p><strong>Conclusions: </strong>Nanocoating of 316L SS bulk material by Nb and Ta with a 1-hour plasma sputtering time can enhance dramatically its tribological behavior. Higher coating hardness, smaller nanoparticle size, intermediate surface coating roughness, and lower surface binding energy of the coatings may play a vital role in friction reduction of the coated 316L SS corresponding to SS orthodontic archwires, predicting to enhance orthodontic treatment.</p>","PeriodicalId":13704,"journal":{"name":"International Journal of Biomaterials","volume":"2023 ","pages":"6676473"},"PeriodicalIF":3.0,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10465258/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10500918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Sugarcane Bagasse-Derived Cellulose Nanocrystal/Polyvinyl Alcohol/Gum Tragacanth Composite Film Incorporated with Betel Leaf Extract as a Versatile Biomaterial for Wound Dressing.","authors":"Luong Ngoc Diem, Selorm Torgbo, Indranil Banerjee, Kunal Pal, Udomlak Sukatta, Prapassorn Rugthaworn, Prakit Sukyai","doi":"10.1155/2023/9630168","DOIUrl":"10.1155/2023/9630168","url":null,"abstract":"<p><p>In this study, nanocomposite film was fabricated using cellulose nanocrystals (CNCs) as nanofiller in a polymer matrix of polyvinyl alcohol (PVA) and gum tragacanth (GT) via solution casting. CNCs were extracted from sugarcane bagasse using a steam explosion technique followed by acid hydrolysis. Initial analysis of CNCs by transmission electron microscopy (TEM) showed nanosized particles of 104 nm in length and 7 nm in width. Physical and chemical characteristics of neat PVA, PVA/GT, and PVA/GT/CNC films with varying concentrations of CNCs (from 2% to 10%) were analyzed by the scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectrometry, mechanical test, and swelling test. The SEM analysis showed cluster formation of CNCs in the polymer matrix at high concentration. The developed films were transparent. FTIR spectrometry analysis confirmed the chemical functional groups of the various components in the film. The presence of GT and CNCs in the polymer matrix improved the characteristics of films as evident in the prolonged stability for 7 days and increased mechanical properties. The highest elastic modulus of 1526.11 ± 31.86 MPa and tensile strength of 80.39 MPa were recorded in PVA/GT/CNC2 film. The swelling ability, however, decreased from 260% to 230%. Cytotoxicity analysis of the PVA/GT/CNC film showed that it is nontoxic to mouse fibroblast cells L929 with 95% cell viability. Films loaded with betel leaf extract exhibited excellent antibacterial activities against <i>Staphylococcus aureus</i> DMST 8840 and <i>Pseudomonas aeruginosa</i> TISTR 781 with 28.20 ± 0.84 mm and 23.60 ± 0.55 mm inhibition zones, respectively. These results demonstrate that PVA/GT/CNC loaded with the betel leaf extract could act as promising and versatile wound dressings to protect the wound surface from infection and dehydration.</p>","PeriodicalId":13704,"journal":{"name":"International Journal of Biomaterials","volume":"2023 ","pages":"9630168"},"PeriodicalIF":3.0,"publicationDate":"2023-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10359141/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9918954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. Aimjirakul, Chavinee Apimanchindakul, B. Mahardawi, Pheeradej Na Nan, Suwit Wimonchit, N. Wongsirichat
{"title":"Bond Strength of Reinforced Autopolymerized Acrylic Resin to Denture Base Resin","authors":"N. Aimjirakul, Chavinee Apimanchindakul, B. Mahardawi, Pheeradej Na Nan, Suwit Wimonchit, N. Wongsirichat","doi":"10.1155/2023/8898843","DOIUrl":"https://doi.org/10.1155/2023/8898843","url":null,"abstract":"The aim of this study was to analyze the effect of applying short E-glass fiber (SEG) and ultrahigh molecular weight polyethylene (UWPE) filler on the shear bond strength between the repaired surface of the rapid heat-cured and the reinforced autopolymerized acrylic resin. Fifty-six circular (15 × 3.3 mm2) rapid heat-cured resins were made and assigned equally to seven different groups. These were later bonded to fifty-six circular-reinforced autopolymerized acrylic resin specimens. Every test group included a control group, along with applying 1% and 2% SEG, 0.5% SEG/UWPE, 1% SEG/UWPE, and 1% and 2% UWPE. The universal testing machine was utilized to conduct the shear bond strength test. The repaired surface of these samples was assessed. Besides, the mode of failure was visualized under stereo microscope. The shear bond strength of all experimental groups was significantly higher than that of the control group. Group 3 with the addition of 1% SEG demonstrated the highest significance (12.86 MPa). The mode of failure for most of specimens was a mixed failure. Thus, it is indicated that enhancing the resin with 1% short E-glass fiber significantly improves the shear bond strength between repaired surface of the rapid heat-cured acrylic resin denture base and the reinforced autopolymerized acrylic resin.","PeriodicalId":13704,"journal":{"name":"International Journal of Biomaterials","volume":"1 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41693768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Novel Coating of Orthodontic Archwires with Chlorhexidine Hexametaphosphate Nanoparticles.","authors":"Zahraa Mohammed Al-Fadhily, Mehdi Abdul-Hadi","doi":"10.1155/2023/9981603","DOIUrl":"10.1155/2023/9981603","url":null,"abstract":"<p><strong>Materials and methods: </strong>A solution of CHX-HMP nanoparticles with an overall concentration of 5 mM for both CHX and HMP was prepared, characterized (using atomic force microscope and Fourier transformation infrared spectroscopy), and used to coat orthodontic stainless steel (SSW) and NiTi archwires (NiTiW). The coated segments were characterized (using scanning electron microscopy SEM with energy dispersive X-ray spectrometry and field emission SEM) and subjected to the elusion assessment.</p><p><strong>Results: </strong>After having their composition validated, the average size of the CHX-HMP NPs was assessed to be 51.21 nm, and the analysis revealed that the particles had both chlorine and phosphorus. After 30 minutes in the coating solution, NPs deposited on the surface of the SSW and NiTiW. A continuous release of soluble CHX in artificial saliva was detected from both SSW and NiTiW as long as the experiment lasted for 28 days without reaching a plateau. However, the release from coated NiTiW was significantly more than coated SSW at 7, 14, and 28 days. While at day 21, the release from coated SSW was slightly greater than that from the coated NiTiW.</p><p><strong>Conclusion: </strong>Orthodontic stainless steel and NiTi archwires can be successfully coated with CHX-HMP NPs and give sustained release of CHX along the examined period.</p>","PeriodicalId":13704,"journal":{"name":"International Journal of Biomaterials","volume":"2023 ","pages":"9981603"},"PeriodicalIF":3.0,"publicationDate":"2023-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10033215/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9197814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Mathematical Modelling with the Exact Solution of Three Different Bioheat Conduction Models of a Skin Tissue Shocked by Thermoelectrical Effect.","authors":"Eman A N Al-Lehaibi","doi":"10.1155/2023/3863773","DOIUrl":"https://doi.org/10.1155/2023/3863773","url":null,"abstract":"<p><p>This research deals with the temperature increment and responsiveness of skin tissue to a continuous flow of surface heat induced by a constant-voltage electrical current. The exact analytical solution for the dual-phase-lag (DPL) of bioheat transfer has been obtained. It is used to confine the variables to a limited domain to solve the governing equations. The transition temperature reactions have been measured and investigated. The figures provide a comparison of the Pennes, Tzou models, and Vernotte-Cattaneo models. The numerical results demonstrate the values of the voltage, resistance, electric shock time, and dual-phase-lag time parameters which have significant influences on the distributions of the dynamic and conductive temperature rise through the skin tissue.</p>","PeriodicalId":13704,"journal":{"name":"International Journal of Biomaterials","volume":"2023 ","pages":"3863773"},"PeriodicalIF":3.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10365921/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9875176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Whitening Effect of <i>Juglans regia</i> Dry Husk Extract on Primary and Permanent Teeth.","authors":"Ola Hameed Turki, Zainab Juma Jafar","doi":"10.1155/2023/1037661","DOIUrl":"https://doi.org/10.1155/2023/1037661","url":null,"abstract":"<p><p>Walnut is a common member of the family <i>Juglandaceae</i>. Recently, the evaluation of the phenolic content and antioxidant activity of the parts of walnut has received increased interest. Many reasons are responsible for teeth discolouration because teeth can absorb ingredients from tea, coffee, and food. Stains from these ingredients could stay in the porous enamel layer. Traditional whitening chemicals have some side effects, the most common of which is tooth sensitivity and mild or moderate gingival irritation. The aims of this comparative experimental study were to evaluate the whitening effect of <i>Juglans regia</i> dry husk extract and compare it with that of traditional prophylactic pumice. Forty human teeth were collected. Amongst these teeth, 20 were permanent, and the other 20 were primary. Each group was randomly divided into a study group (treated with dry husk extract) and a control group (treated with traditional pumice). Tooth colour was measured with Easy VitaShade Advanced 4.0, and the readings of lightness, chroma, and hue (<i>a</i><sup><i>∗</i></sup> represents the green to red axis and <i>b</i><sup><i>∗</i></sup> represents the blue to yellow axis) were documented for each tooth before and after polishing. A statistical analysis was performed using the Statistical Package for Social Science (version 22; Chicago, Illinois, USA). Data were analysed using Shapiro-Wilk, Wilcoxon sum rank, and Wilcoxon signed rank tests, and the level of significance was set to 0.05. A normality test was conducted using the Shapiro-Wilk test, and it showed that the colour variables were not normally distributed. With regard to tooth lightness, significant differences were observed in the primary and permanent teeth and <i>Juglans regia</i> exerted a much better whitening effect than pumice at <i>p</i> < 0.05. This study supports the use of <i>Juglans regia</i> dry husk extract in dentistry as a natural product with a whitening effect. It has utilisation potential in dentistry due to its beneficial properties and highly active components.</p>","PeriodicalId":13704,"journal":{"name":"International Journal of Biomaterials","volume":"2023 ","pages":"1037661"},"PeriodicalIF":3.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10382244/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9912582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Application of Chitosan-Based Hydrogel Obtained from Insects in Pine Planting.","authors":"Yerlan Zhatkanbayev, Zhanna Zhatkanbayeva, Zhanar Iskakova, Ainagul Kolpek, Almas Serikov, Nazira Moldagulova, Gaziza Danlybayeva, Ainur Sarsenova, Sandugash Anuarbekova","doi":"10.1155/2023/8175405","DOIUrl":"https://doi.org/10.1155/2023/8175405","url":null,"abstract":"<p><p>Agrogels, a hydrogel applied in the soil that collects water during irrigation or rainfall and distributes moisture to plant roots during drought, are a solution to water shortage concerns. Extending the release of low molecular weight chemicals has the potential to minimise mineral fertiliser losses as well as water and soil pollution. Thus, the aim of the research is to obtain chitosan from insect chitin, to synthesize a hydrogel based on chitosan with included mineral and organic fertilisers, and to report on experiments with agrogels in the field. In this study, chitosan was obtained from the adult beetles <i>Zophobas morio</i>. IR spectroscopy was used to examine chitosan. The existence of absorption lines typical of primary amines was demonstrated. In one step, a technique for the manufacture of chitosan-based hydrogels containing embedded mineral fertilisers was established. Hydrogel has a swelling coefficient of 60 g/g. Agrogels were evaluated while planting spruce seedlings on \"Semei Ormany\" LLP experimental locations. The survival rate of seedlings was found to be 40% higher in the experimental group than in the control group.</p>","PeriodicalId":13704,"journal":{"name":"International Journal of Biomaterials","volume":"2023 ","pages":"8175405"},"PeriodicalIF":3.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10072961/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9640137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}