Carboxymethyl cellulose film from durian rind
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Publication Details
Author list: Rachtanapun P., Luangkamin S., Tanprasert K., Suriyatem R.
Publisher: Elsevier
Publication year: 2012
Journal: LWT - Food Science and Technology (0023-6438)
Volume number: 48
Issue number: 1
Start page: 52
End page: 58
Number of pages: 7
ISSN: 0023-6438
Languages: English-Great Britain (EN-GB)
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Abstract
Cellulose from durian rind was converted to carboxymethyl cellulose (CMC d) by carboxymethylation using sodium monochloroacetate (SMCA) and various sodium hydroxide (NaOH) concentrations (20-60 g/100 mL). The chemical structure of the cellulose and resulting polymers was then characterized using Fourier transform infrared spectroscopy (FTIR). Then, the properties of the CMC d materials were investigated. The optimum condition for carboxymethylation was found to be 30 g/100 mL NaOH, which provided the highest viscosity and degree of substitution (DS = 0.87). Crystallinity of CMC d was found to decline after synthesis. The L* value of the CMC d decreased with increasing NaOH concentrations (20-40 g/100 mL). The trend of the a* and b* values varied inverses to the L* values. The CMC d films were prepared and tested, and the highest tensile strength (140.77 MPa) and WVTR (220.85 g/dayทm 2) were found using the 30 g/100 mL NaOH-synthesized CMC d film. The percent elongation at break of the different CMC d films was not to significantly differ. ฉ 2012 Elsevier Ltd.
Keywords
Biopolymer, Carboxymethyl cellulose, Durian rind, Edible film, Sodium hydroxide
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