Soy protein-based films incorporated with cellulose nanocrystals and pine needle extract for active packaging

Yu, Zhilong; Sun, Li; Wang, Wei; Zeng, Wei; Mustapha, Azlin; Lin, Mengshi

doi:10.1016/j.indcrop.2017.12.031

Cited by 144 publications

(48 citation statements)

References 43 publications

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“…The cellulose fibers had 50–60 nm diameter and ~35% crystallinity [ 211 ]. A similar composition based on soy protein, cellulose nanocrystals, and pine needle extract was reported by Yu, Z. et al [ 212 ]. The use of cellulose nanocrystals and pine extract lowered WVP for the film by impeding on hydrogen bond formation and increased the mechanical strength.…”

Section: Biodegradable Polymeric Antimicrobial Packagingsupporting

confidence: 63%

Biodegradable Antimicrobial Food Packaging: Trends and Perspectives

Motelică

Ficai

et al. 2020

Foods

206

134

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This review presents a perspective on the research trends and solutions from recent years in the domain of antimicrobial packaging materials. The antibacterial, antifungal, and antioxidant activities can be induced by the main polymer used for packaging or by addition of various components from natural agents (bacteriocins, essential oils, natural extracts, etc.) to synthetic agents, both organic and inorganic (Ag, ZnO, TiO2 nanoparticles, synthetic antibiotics etc.). The general trend for the packaging evolution is from the inert and polluting plastic waste to the antimicrobial active, biodegradable or edible, biopolymer film packaging. Like in many domains this transition is an evolution rather than a revolution, and changes are coming in small steps. Changing the public perception and industry focus on the antimicrobial packaging solutions will enhance the shelf life and provide healthier food, thus diminishing the waste of agricultural resources, but will also reduce the plastic pollution generated by humankind as most new polymers used for packaging are from renewable sources and are biodegradable. Polysaccharides (like chitosan, cellulose and derivatives, starch etc.), lipids and proteins (from vegetal or animal origin), and some other specific biopolymers (like polylactic acid or polyvinyl alcohol) have been used as single component or in blends to obtain antimicrobial packaging materials. Where the package’s antimicrobial and antioxidant activities need a larger spectrum or a boost, certain active substances are embedded, encapsulated, coated, grafted into or onto the polymeric film. This review tries to cover the latest updates on the antimicrobial packaging, edible or not, using as support traditional and new polymers, with emphasis on natural compounds.

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Section: Biodegradable Polymeric Antimicrobial Packagingsupporting

confidence: 63%

Biodegradable Antimicrobial Food Packaging: Trends and Perspectives

Motelică

Ficai

et al. 2020

Foods

206

134

View full text Add to dashboard Cite

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“…To analyze the effects of CNC addition and concentration on the film properties, the best film formulations identified from objective 1 were incorporated with 2, 4, or 6% CNC (w/w, dry weight of polymer). These levels were chosen based on preliminary experimentation, literature analysis, and necessity of anticipated interactions between polymer and filler (George & Sabapathi, 2015; Yu et al., 2018). The mechanical properties (TS, E b , HS), WVP, and PV were measured using the same procedures described above.…”

Section: Methodsmentioning

confidence: 99%

Hydroxypropyl methylcellulose or soy protein isolate‐based edible, water‐soluble, and antioxidant films for safflower oil packaging

Rosenbloom

Zhao

2020

Journal of Food Science

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Edible, water‐soluble, heat‐sealable, and antioxidant films were developed from hydroxypropyl methylcellulose (HPMC) or soy protein isolate (SPI) and applied as safflower oil packaging. A 0.1 or 0.2% DL‐α‐tocopherol acetate (VE) and 0 or 0.25% oleic acid were added into film formulations to provide antioxidant and hydrophobic properties, respectively, using a 23 factorial design. Films were analyzed for appearance, microstructure, water and oil sensitivity, mechanical properties, and antioxidant functionality. Subsequently, a completely randomized design was implemented for incorporating 2, 4, or 6% cellulose nanocrystals (CNCs, w/w dry weight polymer) for improving film mechanical and barrier properties. HPMC‐based films achieved full dissolution in water at <55 °C under 5 min, while SPI‐based films disintegrated in water up to 90 °C. Oleic acid significantly increased (P < 0.05) heat sealability of SPI film from 78 to 143 N/m and elongation at break from 36% to 88%, but decreased tensile strength and heat sealability of HPMC films by 55% and 41%, respectively. As safflower oil packaging, after 60 days of storage at 35 °C, oil contained in SPI‐based pouch had the lowest peroxide values, 8.1 ± 0.9 mEq/kg. Based on barrier, mechanical, and antioxidant capacity evaluations, HPMC film with 0.1% VE and SPI film with 0.25% oleic acid and 0.1% VE were incorporated with CNC. SPI/CNC films did not show observable trends, but HPMC/2% CNC film exhibited significantly improved mechanical and barrier properties, with oxygen permeability of 5.0 mL mm/m2 day kPa. The developed films are a promising packaging alternative to decrease plastic waste, extend shelf life of lipid‐based foods, and increase consumer convenience.Practical ApplicationIndividually packaged, single‐use pouches of sauce or oil are common for seasoning instant and frozen foods, creating unnecessary plastic waste. Edible, water‐soluble packaging with antioxidant functionality would reduce plastic waste, extend shelf life by preventing oxidation, and increase consumer convenience. The biopolymeric films and pouches developed in this study have unique properties from water solubility across a wide range of temperatures, resistance to oil, high oxygen barrier, and good heat sealability, providing a variety of potential applications for promoting sustainable food packaging.

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“…Numerous scientific publications and review articles discuss each of the above materials in more detail. 4−15…”

Section: Introductionmentioning

confidence: 99%

Continuous Processing of Nanocellulose and Polylactic Acid into Multilayer Barrier Coatings

Koppolu

Lahti

Abitbol

et al. 2019

ACS Appl. Mater. Interfaces

111

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Recent years have seen an increased interest toward utilizing biobased and biodegradable materials for barrier packaging applications. Most of the abovementioned materials usually have certain shortcomings that discourage their adoption as a preferred material of choice. Nanocellulose falls into such a category. It has excellent barrier against grease, mineral oils, and oxygen but poor tolerance against water vapor, which makes it unsuitable to be used at high humidity. In addition, nanocellulose suspensions’ high viscosity and yield stress already at low solid content and poor adhesion to substrates create additional challenges for high-speed processing. Polylactic acid (PLA) is another potential candidate that has reasonably high tolerance against water vapor but rather a poor barrier against oxygen. The current work explores the possibility of combining both these materials into thin multilayer coatings onto a paperboard. A custom-built slot-die was used to coat either microfibrillated cellulose or cellulose nanocrystals onto a pigment-coated baseboard in a continuous process. These were subsequently coated with PLA using a pilot-scale extrusion coater. Low-density polyethylene was used as for reference extrusion coating. Cationic starch precoating and corona treatment improved the adhesion at nanocellulose/baseboard and nanocellulose/PLA interfaces, respectively. The water vapor transmission rate for nanocellulose + PLA coatings remained lower than that of the control PLA coating, even at a high relative humidity of 90% (38 °C). The multilayer coating had 98% lower oxygen transmission rate compared to just the PLA-coated baseboard, and the heptane vapor transmission rate reduced by 99% in comparison to the baseboard. The grease barrier for nanocellulose + PLA coatings increased 5-fold compared to nanocellulose alone and 2-fold compared to PLA alone. This approach of processing nanocellulose and PLA into multiple layers utilizing slot-die and extrusion coating in tandem has the potential to produce a barrier packaging paper that is both 100% biobased and biodegradable.

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Soy protein-based films incorporated with cellulose nanocrystals and pine needle extract for active packaging

Cited by 144 publications

References 43 publications

Biodegradable Antimicrobial Food Packaging: Trends and Perspectives

Biodegradable Antimicrobial Food Packaging: Trends and Perspectives

Hydroxypropyl methylcellulose or soy protein isolate‐based edible, water‐soluble, and antioxidant films for safflower oil packaging

Continuous Processing of Nanocellulose and Polylactic Acid into Multilayer Barrier Coatings

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