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Molecules 2011, 16(8), 7143-7154; doi:10.3390/molecules16087143
Article

Physico-Chemical Characteristics and Functional Properties of Chitin and Chitosan Produced by Mucor circinelloides Using Yam Bean as Substrate

1,5,†
, 2
, 3
, 4
, 5
, 5,*  and 6
1 Nutrition Program, Federal University of Pernambuco, Recife 50670-901, Brazil 2 Physiology and Pathology Department, Federal University of Paraiba, João Pessoa 58051-900, Brazil 3 Material Science Program, Federal University of Pernambuco, Recife 50670-901, Brazil 4 Chemistry Department, Federal University of Pernambuco, Recife 50740-560, Brazil 5 Nucleus of Research in Environmental Science, Catholic University of Pernambuco, Recife 50050-590, Brazil 6 Nutrition Department, Federal University of Pernambuco, Recife 50670-901, Brazil Present address: Food Engineering, Campinas State University, Cx. Postal 6121, 13083-862, Campinas, SP., Brazil.
* Author to whom correspondence should be addressed.
Received: 28 July 2011 / Accepted: 8 August 2011 / Published: 23 August 2011
(This article belongs to the Section Metabolites)
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Abstract

Microbiological processes were used for chitin and chitosan production by Mucor circinelloides (UCP 050) grown in yam bean (Pachyrhizus erosus L. Urban) medium. The polysaccharides were extracted by alkali–acid treatment and structural investigations by X-ray diffraction, Fourier transform IR analysis, viscosity and thermal analysis by TG, DTG, and DTA were done. The highest biomass yield (20.7 g/L) was obtained at 96 hours. The highest levels of chitosan (64 mg/g) and chitin (500 mg/g) were produced at 48 and 72 hours, respectively. It was demonstrated that yam bean shows great potential as an economic medium and it is possible to achieve a good yield of chitosan with chemical properties that enable its use in biotechnological applications.
Keywords: biopolymers; Mucor circinelloides; crystallographic properties; deacetylation; thermal analysis biopolymers; Mucor circinelloides; crystallographic properties; deacetylation; thermal analysis
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fai, A.E.C.; Stamford, T.C.; Stamford-Arnaud, T.M.; Santa-Cruz, P.D.; Silva, M.C.F.; Campos-Takaki, G.M.; Stamford, T.L. Physico-Chemical Characteristics and Functional Properties of Chitin and Chitosan Produced by Mucor circinelloides Using Yam Bean as Substrate. Molecules 2011, 16, 7143-7154.

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