Progress on Chemistry and Application of Chitin and its Derivatives最新文献

MOLECULAR DYNAMICS SIMULATIONS OF THE AFFINITY OF CHITIN AND CHITOSAN FOR COLLAGEN: THE EFFECT OF pH AND THE PRESENCE OF SODIUM AND CALCIUM CATIONS 几丁质和壳聚糖对胶原蛋白亲和力的分子动力学模拟:pH值的影响以及钠和钙阳离子的存在

Progress on Chemistry and Application of Chitin and its Derivatives Pub Date : 2023-09-30 DOI: 10.15259/pcacd.28.013

Maciej Przybyłek, Piotr Bełdowski

{"title":"MOLECULAR DYNAMICS SIMULATIONS OF THE AFFINITY OF CHITIN AND CHITOSAN FOR COLLAGEN: THE EFFECT OF pH AND THE PRESENCE OF SODIUM AND CALCIUM CATIONS","authors":"Maciej Przybyłek, Piotr Bełdowski","doi":"10.15259/pcacd.28.013","DOIUrl":"https://doi.org/10.15259/pcacd.28.013","url":null,"abstract":"Chitosan and chitin are promising biopolymers used in many areas including biomedical applications, such as tissue engineering and viscosupplementation. Chitosan shares similar properties with hyaluronan, a natural component of synovial fluid, making it a good candidate for joint disease treatment. The structural and energetic consequences of intermolecular interactions are crucial for understanding the biolubrication phenomenon and other important biomedical features. However, the properties of biopolymers, including their complexation abilities, are influenced by the nature of the aqueous medium with which they interact. In this study, we employed molecular dynamics simulations to describe the effect of pH and the presence of sodium and calcium cations on the stability of molecular complexes formed by collagen type II with chitin and chitosan oligosaccharides. Based on Gibbs free energy of binding, all considered complexes are thermodynamically stable over the entire pH range. The affinity between chitosan oligosaccharide and collagen is highly influenced by pH, while oligomeric chitin shows no pH-dependent effect on the stability of molecular assemblies with collagen. On the other hand, the presence of sodium and calcium cations has a negligible effect on the affinity of chitin and chitosan for collagen.","PeriodicalId":44461,"journal":{"name":"Progress on Chemistry and Application of Chitin and its Derivatives","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135031693","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}

引用次数: 0

PREPARATION AND PHYSICOCHEMICAL CHARACTERISTICS OF AN IODINE AND BISMUTH CONTAINING COMPOSITE MATERIAL BASED ON CHITOSAN 壳聚糖基含碘铋复合材料的制备及其理化特性研究

Progress on Chemistry and Application of Chitin and its Derivatives Pub Date : 2023-09-30 DOI: 10.15259/pcacd.28.015

Anatoly Sklyar, Oksana Kalinkevich, Aleksei Kalinkevich, Vadym Chivanov

引用次数: 0

REUSABILITY OF CHITOSAN AND SAWDUST-MODIFIED CHITOSAN FOR ADSORPTION/DESORPTION OF ANIONIC AND CATIONIC DYES 壳聚糖及木屑改性壳聚糖对阴离子和阳离子染料的吸附/解吸性能研究

Progress on Chemistry and Application of Chitin and its Derivatives Pub Date : 2023-09-30 DOI: 10.15259/pcacd.28.002

Urszula Filipkowska, Tomasz Jóźwiak

引用次数: 0

THE EFFECT OF A COMPOSITE CHITOSAN/COPPER(II) ION COATING ON THE CORROSION RESISTANCE OF GRADE 4 TITANIUM IN SALINE: PRELIMINARY RESULTS 壳聚糖/铜离子复合涂层对4级钛在生理盐水中耐腐蚀性能的影响:初步结果

Progress on Chemistry and Application of Chitin and its Derivatives Pub Date : 2023-09-30 DOI: 10.15259/pcacd.28.008

Bożena Łosiewicz, Patrycja Osak, Julian Kubisztal

引用次数: 0

INCREASING THE EFFECTIVENESS OF CHITOSAN GELS TO PROTECT THE OESOPHAGEAL MUCOSA 增强壳聚糖凝胶对食管黏膜的保护作用

Progress on Chemistry and Application of Chitin and its Derivatives Pub Date : 2023-09-30 DOI: 10.15259/pcacd.28.010

Katarzyna Małolepsza-Jarmołowska

引用次数: 0

THE USE OF CHITIN IN THE MOULTS AND EXOSKELETONS OF MEALWORMS (TENEBRIO MOLITOR) TO REMOVE CATIONIC DYES FROM AQUEOUS SOLUTIONS 在粉虫(黄粉虫)的蜕皮和外骨骼中使用几丁质从水溶液中去除阳离子染料

Progress on Chemistry and Application of Chitin and its Derivatives Pub Date : 2023-09-30 DOI: 10.15259/pcacd.28.006

Patrycja Kurowska, Tomasz Jóźwiak, Urszula Filipkowska, Tadeusz Bakuła

{"title":"THE USE OF CHITIN IN THE MOULTS AND EXOSKELETONS OF MEALWORMS (TENEBRIO MOLITOR) TO REMOVE CATIONIC DYES FROM AQUEOUS SOLUTIONS","authors":"Patrycja Kurowska, Tomasz Jóźwiak, Urszula Filipkowska, Tadeusz Bakuła","doi":"10.15259/pcacd.28.006","DOIUrl":"https://doi.org/10.15259/pcacd.28.006","url":null,"abstract":"We analysed the feasibility of using unmodified chitin exoskeletons and moults of mealworms (Tenebrio molitor) as adsorbents to remove cationic dyes – Basic Violet 10 (BV10) and Basic Red 46 (BR46) – from aqueous solutions. We evaluated the characteristics of the adsorption materials using Fourier-transform infrared spectroscopy and determining the pH of the point of zero charge (pHPZC); the pH effect on dye adsorption effectiveness; dye adsorption kinetics (pseudo–first order, pseudo–second order, and intramolecular diffus ion models); and the maximum adsorption capacity of the adsorbents (Langmuir 1 and 2 and Freundlich isotherms). BV10 adsorption on the tested adsorbents was the highest at pH 3, while adsorption of BR46 was highest at pH 6. The adsorption equilibrium time depended mainly on the dye type and its initial concentration; it was 150–210 min for BV10 and 120–150 min for BR46. The maximum adsorption capacity of mealworm exoskeletons reached 5.56 mg/g for BV10 and 31.53 mg/g for BR46, whereas mealworm moults exhibited a higher maximum adsorption capacity, reaching 6.44 mg/g for BV10 and 5.56 mg/g for BR46.","PeriodicalId":44461,"journal":{"name":"Progress on Chemistry and Application of Chitin and its Derivatives","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135031745","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}

引用次数: 0

THE EFFECT OF CHITOSAN ON THE PHYSICOCHEMICAL PROPERTIES OF DERMATOLOGICAL PREPARATIONS CONTAINING HUMULUS LUPULUS L. EXTRACT BASED ON CELUGEL 壳聚糖对以纤维素为基础的葎草提取物皮肤制剂理化性质的影响

Progress on Chemistry and Application of Chitin and its Derivatives Pub Date : 2023-09-30 DOI: 10.15259/pcacd.28.003

Bożena Grimling

引用次数: 0

ON OBTAINING BINARY POLYELECTROLYTE COMPLEXES OF CHITOSAN BOMBYX MORI WITH COLLAGEN 壳聚糖家蚕与胶原蛋白二元多电解质复合物的制备

Progress on Chemistry and Application of Chitin and its Derivatives Pub Date : 2023-09-30 DOI: 10.15259/pcacd.28.017

Noira Rakhimovna Vokhidova, Shuhrat Shamsiddinovich Khudoyberdiyev, Ilnar Nakipovich Nurgaliev, Sayyora Sharafovna Rashidova

{"title":"ON OBTAINING BINARY POLYELECTROLYTE COMPLEXES OF CHITOSAN BOMBYX MORI WITH COLLAGEN","authors":"Noira Rakhimovna Vokhidova, Shuhrat Shamsiddinovich Khudoyberdiyev, Ilnar Nakipovich Nurgaliev, Sayyora Sharafovna Rashidova","doi":"10.15259/pcacd.28.017","DOIUrl":"https://doi.org/10.15259/pcacd.28.017","url":null,"abstract":"We obtained binary polyelectrolyte complexes containing chitosan from Bombyx mori and collagen with a mass ratio of 10:1; 10:2, and 10:3. During the interaction between the macromolecules, due to the compensation of the positive charges of chitosan with the negative charges of collagen, the zeta potential of the solutions of polyelectrolyte complexes changed from +15.2 to +5.67 mV. We revealed the dependence of the size characteristics of the particles of polyelectrolyte complexes on time and the ratio of macromolecules. An examination of the morphology of the films of polyelectrolyte complexes demonstrated that in the evaluated chitosan/collagen mass ratios, non-spherical nanosized particles up to ≤ 60 nm form on the surface of the films. We evaluated the mechanism of formation of complexes by using Fourier-transform infrared spectroscopy and confirmed the findings with density functional theory and molecular dynamics. We found that the particle diameter is inversely proportional to the diffusion coefficient. The results show that the particles are almost uniformly distributed over the surface of the polymer matrix and have a unimodal character. We obtained reproducible results when using a chitosan/collagen mass ratio of 10:2 to dye natural silk. We found that the complexes contribute to increase the intensity and stability of colour relative to soap and friction.","PeriodicalId":44461,"journal":{"name":"Progress on Chemistry and Application of Chitin and its Derivatives","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135031698","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}

引用次数: 0

THE EFFECTS OF APPLYING CHITOSAN OF DIFFERENT MOLECULAR WEIGHTS ON THE QUALITY OF KAMCHATKA BERRIES (LONICERA CAERULEA L.): PART 2 应用不同分子量壳聚糖对堪察加浆果(金银花)品质的影响:第2部分

Progress on Chemistry and Application of Chitin and its Derivatives Pub Date : 2023-09-30 DOI: 10.15259/pcacd.28.012

Ireneusz Ochmian, Marcelina Krupa-Małkiewicz

引用次数: 0

CHITOSAN AND META-TOPOLIN SUPPLEMENTATION OF THE MULTIPLICATION MEDIA OF VITIS VINIFERA L. 壳聚糖和间topolin对葡萄球菌增殖培养基的补充研究。

Progress on Chemistry and Application of Chitin and its Derivatives Pub Date : 2023-09-30 DOI: 10.15259/pcacd.28.005

Marcelina Krupa-Małkiewicz, Ireneusz Ochmian

{"title":"CHITOSAN AND META-TOPOLIN SUPPLEMENTATION OF THE MULTIPLICATION MEDIA OF VITIS VINIFERA L.","authors":"Marcelina Krupa-Małkiewicz, Ireneusz Ochmian","doi":"10.15259/pcacd.28.005","DOIUrl":"https://doi.org/10.15259/pcacd.28.005","url":null,"abstract":"We investigated the efficiency of chitosan (CH) and meta-topolin (mT) on in vitro growth and adaptation to greenhouse conditions of Vitis vinifera cv. Johanniter and cv. Hibernal. After the initiation stage, we transferred explants to Woody Plant Media (WPM) with chitosan (molecular weight 3.33 kDa) at a concentration of 10, 20, and 40 ppm or to WPM with mT at a concentration of 0.5, 1.0, and 2.0 mg l–1. WPM without CH or mT served as a control. Among the tested combinations, WPM with 10 ppm of CH led to the maximum mean root length (12.18 cm and 12.65 cm for the Hibernal and Johanniter cultivars, respectively) and the number of new leaves (5.9 and 8.15 for the Hibernal and Johanniter cultivars, respectively). As the CH concentration in the medium increased, the length of shoots and roots decreased. We found the highest percentage of acclimatised plants on WPM (cv. Hibernal) and WPM with 40 ppm of CH (cv. Johanniter). The addition of mT had a negative effect on the morphological traits we measured, regardless of the concentration. Leaves of explants from WPM with mT were yellower and redder compared with the control. None of the explants obtained on this medium produced roots.","PeriodicalId":44461,"journal":{"name":"Progress on Chemistry and Application of Chitin and its Derivatives","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135031709","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}

引用次数: 0