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. 2021 Mar 21;13(6):963.
doi: 10.3390/polym13060963.

Characterization of Chitosan Film Incorporated with Curcumin Extract

Pornchai Rachtanapun  1   2   3 , Warinporn Klunklin  1 , Pensak Jantrawut  2   4 , Kittisak Jantanasakulwong  1   2   3 , Yuthana Phimolsiripol  1   2   3 , Phisit Seesuriyachan  1   2 , Noppol Leksawasdi  1   2   3 , Thanongsak Chaiyaso  1   2 , Warintorn Ruksiriwanich  2   4 , Suphat Phongthai  1   2 , Sarana Rose Sommano  3   5 , Winita Punyodom  3   6 , Alissara Reungsang  7   8   9 , Thi Minh Phuong Ngo  10
Affiliations

Characterization of Chitosan Film Incorporated with Curcumin Extract

Pornchai Rachtanapun et al. Polymers (Basel). .

Abstract

Curcumin is a phenolic compound derived from turmeric roots (Curcuma longa L.). This research studied the effects of curcumin extract on the properties of chitosan films. The film characteristics measured included mechanical properties, visual aspects, color parameters, light transmission, moisture content, water solubility, water vapor permeability, infrared spectroscopy, and antioxidant activity. The results suggest that adding curcumin to chitosan-based films increases yellowness and light barriers. Infrared spectroscopy analysis showed interactions between the phenolic compounds of the extract and the chitosan, which may have improved the mechanical properties and reduced the moisture content, water solubility, and water vapor permeability of the films. The antioxidant activity of the films increased with increasing concentrations of the curcumin extract. This study shows the potential benefits of incorporating curcumin extract into chitosan films used as active packaging.

Keywords: active packaging; antioxidant; bio-based film; biopolymers; chitosan film; curcumin.

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Conflict of interest statement

The authors declare that there are no conflicts of interest regarding the publication of this paper.

Figures

Figure 1
Figure 1
IC50 of curcumin extract.
Figure 2
Figure 2
Chitosan-based films incorporated with different concentrations of curcumin extract (CCE). (a) CCE = 0 mg/mL, (b) CCE = 0.08 mg/mL, (c) CCE = 0.16 mg/mL, (d) CCE = 0.24 mg/mL, (e) CCE = 0.32 mg/mL, (f) CCE = 0.40 mg/mL.
Figure 3
Figure 3
Light transmission of chitosan film incorporated with various curcumin quantities. Results marked with different letters are statistically different (p < 0.05).
Figure 4
Figure 4
The moisture content of chitosan film incorporated with various curcumin quantities. Results marked with different letters are statistically different (p < 0.05).
Figure 5
Figure 5
The water-soluble matter of chitosan film incorporated with various curcumin quantities. Results marked with different letters are statistically different (p < 0.05).
Figure 6
Figure 6
The water vapor permeability of chitosan film incorporated with various curcumin quantities. Results marked with different letters are statistically different (p < 0.05).
Figure 7
Figure 7
Infrared spectra of (a) chitosan films and (b) chitosan films incorporated with curcumin extract (0.16 mg/mL).
Figure 8
Figure 8
Tensile strength of chitosan film incorporated with various curcumin quantities. Results marked with different letters are statistically different (p < 0.05).
Figure 9
Figure 9
Elongation at break of chitosan film incorporated with various curcumin quantities. Results different letters are statistically different (p < 0.05).
Figure 10
Figure 10
DPPH scavenging effect of chitosan film incorporated with various curcumin quantities. Results marked with different letters are statistically different (p < 0.05).
See this image and copyright information in PMC

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