Chitosan Extraction from Goliathus orientalis Moser, 1909: Characterization and Comparison with Commercially Available Chitosan
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Chitosan is a polymer obtained by deacetylation of chitin, and chitin is one of the major components of the arthropod cuticle. Chitin and chitosan are both polysaccharides and are considered to be an interesting class of biosourced materials. This is evident as chitosan has already demonstrated utility in various applications in both industrial and biomedical domains. In the present work, we study the possibility to extract chitin and prepare chitosan from the Goliath beetle Goliathus orientalis Moser. The presented work includes description of this process and observation of the macroscopic and microscopic variations that occur in the specimen during the treatment. The prepared chitosan is characterized and compared with commercially available chitosan using infrared and thermogravimetric analysis. The deacetylation degree of prepared chitosan is also evaluated and compared with commercially available shrimp chitosan.Keywords:
Thermogravimetric analysis
Chitin/Chitosan have many advantages such as their abundant,nonpoisonous,biodegradable etc.The development and application of chitin/chitosan are investigated by many domestic and foreign scholars.In this paper,the removal of environmental pollutants with chitin/chitosan and their derivatives is reviewed,and the research and application of chitin/chitosan to environment management and wastewater treatment are introduced.
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The structure and the performance of chitin and chitosan are introduced and the application of chitin and chitosan in various fields is analyzed in this paper.The existing problems and the development foreground of chitin and chitosan are summarized in this paper.
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ABSTRACT Chitin and chitosan are versatile polymers, where the interest in chitosan is due to the large variety of useful forms that are commercially available or can be made available. Chitin basically is obtained from prawn/crab shells; chemical treatment of chitin produces chitosan. This article surveys applications of chitin and chitosan in various industrial and biomedical fields.
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Many fungi are rich in chitin and chitosan in their cell walls, which makes fungi become a new and potential source of chitin and chitosan. The existences of chitin and chitosan in fungi, methods of preparing, as well as some problems of obtaining chitin and chitosan from fungi were reviewed in this paper.
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본 연구에서는 전남지방에서 전통식품으로 섭취되고 있는 토하(Caridina japonica)를 식품공업에 이용하기 위한 일련의 기초연구로 토하표피로 부터 chitin을 추출, chitosan을 제조하고 그 함유단백질을 정량, 그 특성을 검토하였다. 토하 중에 함유된 chitin의 중량%는 평균 9.6±0.2%였고, 여기에서 제조된 chitosan은 chitin 중량의 72.5±3.6%였다. 토하 chitin 및 chitosan의 확인을 위한 FT-IR spectrum상 표준시료인 Sigma사의 chitin, chitosan과 비교하여 동일한 spectrum을 나타내었으므로, 토하에서 추출, 제조된 물질도 chitin, chitosan임을 확인할 수 있었다. 토하 chitin, chitosan의 점도는 94.4, 96.7cps였고, 분자량은 4,398,900 및 4,101,000이었으며, chitosan의 탈아세틸화도는 78.48%였다. 토하 chitin 중에는 단백질이 2.7%, 토하 chitosan 중에는 2.6% 결합되어 있었다.
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Chitin and chitosan are natural polysaccharides. In this study, we presented the possibilities of using chitin and chitosan in medical practice and experimental studies. Chitin and chitosan, based wound dressings available as commercial products, were presented. The directions of future progress in employment chitin and chitosan in treatment of many kinds of wounds were also described. In this study, the main properties of these polymers were established. The usefulness of the chitin and chitosan as hemostatic products, wound dressing and skin substitutes was emphasized.
Wound dressing
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This chapter contains sections titled: Introduction Chitin and Chitosan Properties of Chitin and Chitosan Modification of Chitin and Chitosan Application of Natural Polymers in Wastewater Treatment as Promising Adsorbents Chitin and Chitosan as a New Type of Polymer Coagulant/Flocculants Future Directions for Research Conclusion Acknowledgments
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Chitosan is a polymer obtained by deacetylation of chitin, and chitin is one of the major components of the arthropod cuticle. Chitin and chitosan are both polysaccharides and are considered to be an interesting class of biosourced materials. This is evident as chitosan has already demonstrated utility in various applications in both industrial and biomedical domains. In the present work, we study the possibility to extract chitin and prepare chitosan from the Goliath beetle Goliathus orientalis Moser. The presented work includes description of this process and observation of the macroscopic and microscopic variations that occur in the specimen during the treatment. The prepared chitosan is characterized and compared with commercially available chitosan using infrared and thermogravimetric analysis. The deacetylation degree of prepared chitosan is also evaluated and compared with commercially available shrimp chitosan.
Thermogravimetric analysis
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