Preparation, Characterization and Application of a Low Water-Sensitive Artemisia sphaerocephala Krasch. Gum Intelligent Film Incorporated with Anionic Cellulose Nanofiber as a Reinforcing Component

Abstract

A low-water-sensitive Artemisia sphaerocephala Krasch. gum (ASKG) based intelligent film was developed. Red cabbage extracts (RCE) was selected as a natural pH-sensitive indicator, and anionic cellulose nanofiber (ACNF) was added as a hydrophobic and locking host. The zeta potential, rheology, Fourier-transform infrared spectroscopy, X-ray diffractometry, and release results indicated that the RCE was locked by the ACNF via electrostatic interactions, moreover, broke the original complicated network and ordered arrangement of polymer molecules in the developed intelligent films. RCE addition decreased the tensile strength, oxygen, and water vapor barrier properties and light transmission of the developed intelligent films, while increasing the elongation at break. The films could respond to buffer solutions and NH3 through different color changes. The developed intelligent film was hydrophobic, which could precisely detect the freshwater shrimp freshness in real time via color changes, which indicated that the films have potential in intelligent packaging and gas-sensing label fields.

Preparation and Application of pH-Sensitive Film Containing Anthocyanins Extracted from Lycium ruthenicum Murr.

“…It is possible that the addition of anthocyanins reduced the interaction between the molecules formed by Artemisia sphaerocephala Krasch. gum (ASKG) and soybean protein isolate (SPI), destroying the reticular spatial structure of solid matrix [ 45 , 46 ]. The tensile strength (TS) value of the prepared pH-sensitive film increased considerably by a factor of approximately 2–5, while the elongation at break (EB) value decreased sharply by about 60–95%.…”

“…A possible reason for this is that, at low concentrations of LMRA solution, the anthocyanin molecules interacted only with the surface molecules of the solid matrix [ 67 , 68 ]. Upon increasing the strength of the solution, the number of anthocyanin molecules aggregating on the surface of the film increased, and the anthocyanin molecules entered the interior of the film via hydrogen bonding, breaking the original compact spatial structure between ASKG and SPI [ 46 , 53 ].…”

Electrospinning of Triple-Component Protein–Polysaccharide Nanofibers for Fabrication of Highly Efficient Ethylene Scavenger Films

“…11 (ASKG) and chitosan (CS), which are natural polysaccharides derived from the seed of Artemisia desterorum Spreng and chitin, respectively, have been extensively used in the fabrication of food packaging and coatings. 12 In addition to their favorable biocompatibility and biodegradability, these polysaccharides are capable of forming solutions with high viscosities. 13 Thus, to improve the spinnability of zein, we used ASKG and CS to increase the viscosity of zein electrospinning precursor solutions.…”

“…Artemisia sphaerocephala Krasch . gum (ASKG) and chitosan (CS), which are natural polysaccharides derived from the seed of Artemisia desterorum Spreng and chitin, respectively, have been extensively used in the fabrication of food packaging and coatings . In addition to their favorable biocompatibility and biodegradability, these polysaccharides are capable of forming solutions with high viscosities .…”