TPCS/PBAT blown extruded films added with curcumin as a technological approach for active packaging materials

Abstract

The development of active packaging is a relevant topic demanding the development of films with diverse properties to preserve specific foodstuff. The objective of this work was to obtain extruded TPCS/PBAT films containing curcumin and evaluate it as an active antimicrobial and antioxidant packaging to protect chia oil from oxidative degradation. Morphology, thermal, mechanical, antimicrobial, and antioxidant evaluation of the films were conducted to determine whether the presence of curcumin affected the film's properties. Infrared Spectroscopy indicated that curcumin addition affected the crosslinking reaction between citric acid and starch, which explains the changes in hydrophilicity and mechanical strength of the films. The incorporation of curcumin conferred antimicrobial activity against Gram-positive (Staphylococcus aureus) and Gram-negative (Pseudomonas aeruginosa and Escherichia coli) bacteria, as well as antioxidant activity. Films were tested as chia oil packaging, being verified that they successfully prevented oil degradation under accelerated stability test (60°C for 7 days), demonstrating the feasibility of using TPCS/PBAT biodegradable films containing curcumin to obtain active packaging materials.

Bio-Based Poly(butylene succinate)/Microcrystalline Cellulose/Nanofibrillated Cellulose-Based Sustainable Polymer Composites: Thermo-Mechanical and Biodegradation Studies

“…It could be also said that they further comply with the bio-based and biodegradable concept design of sustainable materials and allow usage of recycled cellulose or other bio-polymers for circular economy [ 23 ]. Several studies have demonstrated effectiveness of combining bio-based polyesters with bio-based fillers like poly(butylene adipate-co-terephthalate) (PBAT) with thermoplastic starch for active packaging [ 24 ], PBAT/PLA blends with Babassu for mulch films [ 25 ], chitosan blends with various bio-polyesters like PBS, PLA and others demonstrated antimicrobial activity useful for food preservation and packaging [ 26 ].…”

Curcumin Incorporated Poly(Butylene Adipate-co-Terephthalate) Film with Improved Water Vapor Barrier and Antioxidant Properties

“…A variety of functional or reinforcing fillers such as SiO 2 , graphene oxide, MgO, AgNP, ZnONP, clay, curcumin, grape seed extract, etc. have been utilized enhance the physical and functional properties of PBAT films [ 9 , 15 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 ]. In this sense, the use of natural bioactive compounds to improve PBAT film properties is an attractive field of research.…”

“…for biomedical and food packaging applications [ 21 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 ]. Recently, De Compos et al reported the preparation of curcumin-reinforced PBAT and thermoplastic cassava starch-based extruded composite films [ 21 ]. In addition, PBAT-based electrospun nanofiber has been developed by reinforcing curcumin and 5-fluorouracil [ 39 ].…”

Influence of pinhão starch and natural extracts on the performance of thermoplastic cassava starch/PBAT extruded blown films as a technological approach for bio‐based packaging material

“…Thus, when the material is conditioned to a lower relative humidity, there is a decrease in the molecular mobility of the polymeric chains, resulting in a more rigid structure, which can explain the above mentioned results. Even though there was a reduction in the elongation of the films, their ductility is still considered higher in comparison to other films made with thermoplastic starch (TPS)/curcumina/PBAT (de Campos et al., 2019), TPS/pinhão extract/PBAT (Silva et al., 2019), and TPS/PBAT/PLA (Ren et al., 2009).…”

“…starch-films (de Campos et al, 2019). The DTG curves showed an initial peak at around 95 and 100°C for control and films with extracts, respectively.…”