Influence of the acid type in the production of chitosan films reinforced with bacterial nanocellulose

被引：47
|
作者：
Velasquez-Cock, J. [1 ]
Ramirez, E. [1 ]
Betancourt, S. [2 ]
Putaux, J. -L. [3 ]
Osorio, M. [1 ]
Castro, C. [4 ]
Ganan, P. [1 ]
Zuluaga, R. [5 ]
机构：
[1] Univ Pontificia Bolivariana, Fac Ingn Quim, Medellin, Colombia
[2] Univ Pontificia Bolivariana, Fac Ingn Mecan, Medellin, Colombia
[3] Ctr Rech Macromol Vegetales CERMAV CNRS, F-38041 Grenoble 9, France
[4] Univ Pontificia Bolivariana, Fac Ingn Text, Medellin, Colombia
[5] Univ Pontificia Bolivariana, Fac Ingn Agroind, Medellin, Colombia
来源：
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2014年 / 69卷
关键词：
Chitosan; Bacterial cellulose nanoribbons; Antimicrobial films; Acetic acid; Lactic acid; PHYSICAL-PROPERTIES; BARRIER PROPERTIES; MICROFIBRILLATED CELLULOSE; EDIBLE COATINGS; MODE;
D O I：
10.1016/j.ijbiomac.2014.05.040
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Chitosan films reinforced with bacterial cellulose (BC) nanoribbons were studied to understand the influence of acid (acetic and lactic acids) on the reinforcing effect. For both acids, the maximum concentration of the reinforcing constituent was 5 wt% with respect to the dry weight of chitosan. The infrared spectra, mechanical properties, morphology and antimicrobial activity of the films were analyzed. The results showed a difference between the acids in their behavior and effect on the reinforcement, with a tensile strength of 12.3 MPa for the acetic acid films and 3.3 MPa for the lactic acid films. Additionally, the bacterial inhibition tests were shown to be positive for the lactic acid films and negative for the acetic acid films. Therefore, exchanging the acid used in these films may be desirable for certain applications. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：208 / 213
页数：6
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