Comparative study of the properties of soy protein concentrate films containing free and encapsulated oregano essential oil

Rye secalin characterisation and use to improve zein‐based film performance

“…The results of WVP properties did not demonstrate any significant difference among the various films. However, the WVP values of SCL‐ and zein‐based films, reported in Table 2, were lower than those previously reported for other prolamins, such as pennisetin, avenin, kafirin and even zein films (Gillgren & Stading, 2008; Gillgren et al ., 2011), as well as for further protein‐based films, such as soy protein films (dos Santos Paglione et al ., 2019), fish skin gelatin films (Menezes et al ., 2019) and whey protein films containing or not bergamot oil (Sogut, 2020).…”

Methods of Incorporating Plant-Derived Bioactive Compounds into Films Made with Agro-Based Polymers for Application as Food Packaging: A Brief Review

“…The spray drying technique was also used for the microencapsulation of blackberry pulp [29]. Paglione et al [127] observed the effect of oregano essential oil microencapsulated by ionic gelation on soy protein concentrate. The internal ionotropic gelation of sodium alginate and pectin was used for the production of hydrogel particles from Immortelle (Helichrysum italicum) extract [128].…”

“…Once the bioactive compound is encapsulated, it can be incorporated into the film-forming solution directly [30,114,115,127] with later deposition of the resulting solution onto drying plates, or by sprinkling as recently reported by Nogueira et al [29,117,118]. In the second method, the film-forming solution is initially deposited onto support plates and, then, the encapsulated bioactive compound is added by sprinkling through a stainless-steel sieve over the entire surface area of the film-forming solution already arranged on the plates.…”

“…The addition of microencapsulated oregano essential oil also improved the mechanical properties and reduced the water vapor permeability of films. Although the microparticles are large (250 ± 6 µm), the good interaction between soy protein concentrate, a material used for forming the film, and the alginate used as a wall material in the microencapsulation of the oil resulted in a more continuous film matrix with few cavities, which led to improvements to them [127]. The incorporation of gelatin microparticles, containing papaya skin as a filling material, into films also made from gelatin allowed a good interaction between these materials, resulting in a more continuous film matrix and an increase in tensile strength and Young's modulus [144].…”

Polysaccharide and Protein Films with Antimicrobial/Antioxidant Activity in the Food Industry: A Review

“…However, it should be noted that oregano essential oil, in the form of microcapsules among the film, exhibited lower antioxidant activity than the free oil in the soy protein concentrate film. The authors attribute this to the presence of a solvent, which is used to extract antioxidant compounds and modify the release profile of oils from the film to the release medium [60]. Rosemary essential oil, extracted from two Tunisian varieties, namely Zaghouan (ZG; North Tunisia; R. officinalis var.…”