دورية أكاديمية
Carboxymethylation of (1 → 6)-β-glucan (lasiodiplodan): Preparation, characterization and antioxidant evaluation.
| العنوان: | Carboxymethylation of (1 → 6)-β-glucan (lasiodiplodan): Preparation, characterization and antioxidant evaluation. |
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| المؤلفون: | Kagimura FY; Department of Chemistry, Federal Technological University of Paraná, Via do Conhecimento, km 01, Bairro Fraron, CEP: 85503-390 Pato Branco, PR, Brazil., da Cunha MA; Department of Chemistry, Federal Technological University of Paraná, Via do Conhecimento, km 01, Bairro Fraron, CEP: 85503-390 Pato Branco, PR, Brazil. Electronic address: mcunha@utfpr.edu.br., Theis TV; Department of Chemistry, Federal Technological University of Paraná, Via do Conhecimento, km 01, Bairro Fraron, CEP: 85503-390 Pato Branco, PR, Brazil., Malfatti CR; Midwestern State University (Graduate Program in Pharmaceutical Sciences), CEDETEG Campus, CEP: 85040-080 Guarapuava, PR, Brazil., Dekker RF; Biorefining and Biotechnology Consultancy, Rua João Huss 200, Glebe Palanho, CEP: 86050-490 Londrina, PR, Brazil., Barbosa AM; Department of Chemistry-CCE, Londrina State University, CEP: 86051-990 Londrina, PR, Brazil., Teixeira SD; Department of Chemistry, Federal Technological University of Paraná, Via do Conhecimento, km 01, Bairro Fraron, CEP: 85503-390 Pato Branco, PR, Brazil., Salomé K; Chemistry Department, Federal University of Paraná, Caixa Postal 19032, CEP: 81.531-980 Curitiba, PR, Brazil. |
| المصدر: | Carbohydrate polymers [Carbohydr Polym] 2015; Vol. 127, pp. 390-9. Date of Electronic Publication: 2015 Mar 28. |
| نوع المنشور: | Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: | English |
| بيانات الدورية: | Publisher: Elsevier Applied Science Publishers Country of Publication: England NLM ID: 8307156 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-1344 (Electronic) Linking ISSN: 01448617 NLM ISO Abbreviation: Carbohydr Polym Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: <1992-> : Barking : Elsevier Applied Science Publishers Original Publication: London [Eng.] : Applied Science Publishers, c1981- |
| مواضيع طبية MeSH: | Antioxidants/*chemistry , Ascomycota/*chemistry , beta-Glucans/*chemistry, Antioxidants/metabolism ; Ascomycota/metabolism ; Methylation ; Particle Size ; beta-Glucans/metabolism |
| مستخلص: | D-Glucans possess immunomodulatory activities and potential for the development of new therapeutic agents. Biological activities can be enhanced in these biopolymers through chemical derivatization, e.g., carboxymethylation. This work presents the carboxymethylation, characterization and the evaluation of antioxidant activities of the exocellular (1 → 6)-β-D-glucan produced by Lasiodiplodia theobromae MMPI. Thermal analysis indicated that the native and carboxymethylated polysaccharides presented four stages of mass-loss. The first stage occurred at 125°C (loss of water) with two consecutive events of mass loss (200-400°C) attributed to polymer degradation and the fourth stage between 425 and 620°C (final decomposition). Scanning electron microscopy analysis indicated that the gross morphological features of lasiodiplodan were ruptured following carboxymethylation. X-ray diffractometry analysis demonstrated that the native and carboxymethylated polysaccharides presented a non-crystalline structure. Carboxymethylation contributed to improving the polysaccharide's water solubility and antioxidant capacity. (Copyright © 2015 Elsevier Ltd. All rights reserved.) |
| فهرسة مساهمة: | Keywords: Antioxidant capacity; Biopolymers; Exopolysaccharides; β-Glucans |
| المشرفين على المادة: | 0 (Antioxidants) 0 (beta-Glucans) 37361-00-5 (beta-1,6-glucan) |
| تواريخ الأحداث: | Date Created: 20150513 Date Completed: 20160302 Latest Revision: 20150513 |
| رمز التحديث: | 20240628 |
| DOI: | 10.1016/j.carbpol.2015.03.045 |
| PMID: | 25965498 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1879-1344 |
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| DOI: | 10.1016/j.carbpol.2015.03.045 |