Abstract
The aim of this work was to prepare an intelligent Artemisia sphaerocephala Krasch. gum (ASKG)-based film capable of anchoring the natural dye extracted from red cabbage (RCA). For this purpose, carboxymethyl cellulose sodium (CMC·Na) was selected as a host complex. Zeta-potential, Fourier-transform infrared spectroscopy, X-ray diffraction, rheology, and release results revealed that RCA interacted with CMC·Na through electrostatic interactions and altered the complicated spatial structure and crystal structure between ASKG and CMC·Na. The tensile strength, light-transmission and transparency of the films decreased after adding RCA, while elongation at break and water-vapor permeability increased. The RCA solution exhibited a color change from pink to green along with pH variations ranging from 3.0 to 10.0. Additionally, the RCA-containing ASKG/CMC·Na-blended films responded to buffer solutions (from rose-bengal to aquamarine) and NH3 (from yellow-green to yellow). The films containing RCA content >5% were more suitable for practical applications, because they are detectable by the human eye over a wide pH range. These results indicated that RCA-containing ASKG/CMC·Na-blended films exhibited potential as intelligent packaging and gas-sensing labels.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
