The Effect of Sage (Salvia sclarea) Essential Oil on the Physiochemical and Antioxidant Properties of Sodium Alginate and Casein-Based Composite Edible Films

Abstract

The aim of this study was to examine the effect of Sage (Salvia sclarea) essential oil (SEO) on the physiochemical and antioxidant properties of sodium alginate (SA) and casein (CA) based films. Thermal, mechanical, optical, structural, chemical, crystalline, and barrier properties were examined using TGA, texture analyzer, colorimeter, SEM, FTIR, and XRD. Chemical compounds of the SEO were identified via GC–MS, the most important of which were linalyl acetate (43.32%) and linalool (28.51%). The results showed that incorporating SEO caused a significant decrease in tensile strength (1.022–0.140 Mpa), elongation at break (28.2–14.6%), moisture content (25.04–14.7%) and transparency (86.1–56.2%); however, WVP (0.427–0.667 × 10−12 g·cm/cm2·s·Pa) increased. SEM analysis showed that the incorporation of SEO increased the homogeneousness of films. TGA analysis showed that SEO-loaded films showed better thermal stability than others. FTIR analysis revealed the compatibility between the components of the films. Furthermore, increasing the concentration of SEO increased the antioxidant activity of the films. Thus, the present film shows a potential application in the food packaging industry.

Stability of antimicrobial, antioxidant, and functional properties of pectin‐based film incorporated with Thymus capitatus and Cinnamomum verum essential oils

“…The film incorporated with CEO showed optimal potential (96.25%), followed by the film with TEO. These findings are in line with the results obtained by Lin et al (2020), Pires et al (2013), and Bhatia et al (2023), who likewise concluded that the antioxidant activity of edible films generally increases with the incorporation of EOs. We also observed a minor inhibition of DPPH free radicals in the control film.…”

Enhancing Tensile Strength, Thermal Stability, and Antioxidant Characteristics of Transparent Kappa Carrageenan Films Using Grapefruit Essential Oil for Food Packaging Applications

“…Edible films were fabricated using the casting technique outlined in our prior investigation. 8 A filmogenic solution containing carrageenan was prepared by combining 2% (w/v) carrageenan with 100 mL of distilled water. Subsequently, the mixture was subjected to agitation at 800 rpm, utilizing a magnetic stirrer (Daihan Scientific, Seoul, Korea), for a duration of 20 min, maintaining a temperature of 60 °C.…”

“…Mechanical Attributes. The mechanical characteristics of the film samples were evaluated following the procedure outlined by Bhatia et al 8 The experimental approach followed the ASTM D882 standard method guidelines using a texture analysis (TA. XT plus, Stable Micro Systems, England) with a 5 kg load cell.…”

Multifunctional Casein-Based Wound Dressing Capable of Monitoring and Moderating the Proteolytic Activity of Chronic Wounds

“…Neutralization of acid casein with sodium hydroxide leads to the formation of sodium caseinate, which is water-soluble. Casein has been studied for use in a number of applications, including controlled release systems, textile fibers, flame-retardant compounds, and edible films . In the biomaterials area, its mixture with polycaprolactone (PCL) and gelatin for the fabrication of electrospun webs and application in cartilage tissue engineering has been considered .…”