scholarly journals Antimicrobial Edible Film Prepared from Bacterial Cellulose Nanofibers/Starch/Chitosan for a Food Packaging Alternative

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Hairul Abral ◽  
Angga Bahri Pratama ◽  
Dian Handayani ◽  
Melbi Mahardika ◽  
Ibtisamatul Aminah ◽  
...  
Keyword(s):  
Bacterial Cellulose ◽  
Food Packaging ◽  
Cellulose Nanofibers ◽  
Environmentally Friendly ◽  
Potential Candidate ◽  
Tapioca Starch ◽  
Water Vapor Barrier ◽  
Chitosan Matrix ◽  
Biocomposite Film ◽  
Food Packaging Films

As a contribution to the growing demand for environmentally friendly food packaging films, this work produced and characterized a biocomposite of disintegrated bacterial cellulose (BC) nanofibers and tapioca starch/chitosan-based films. Ultrasonication dispersed all fillers throughout the film homogeneously. The highest fraction of dried BC nanofibers (0.136 g) in the film resulted in the maximum tensile strength of 4.7 MPa. 0.136 g BC nanofiber addition to the tapioca starch/chitosan matrix increased the thermal resistance (the temperature of maximum decomposition rate from 307 to 317°C), moisture resistance (after 8 h) by 8.9%, and water vapor barrier (24 h) by 27%. All chitosan-based films displayed antibacterial activity. This characterization suggests that this environmentally friendly edible biocomposite film is a potential candidate for applications in food packaging.

Preparation of eco-friendly composite food packaging films based on gelatin and matrine coconut acids ionic liquid

2021 ◽  
Author(s):  
Hao Wang ◽  
Yixiang Du ◽  
Zhenyuan Wang ◽  
Wen Yu ◽  
Ling Zhang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Food Packaging ◽  
Environmentally Friendly ◽  
Packaging Films ◽  
Cling Film ◽  
Food Packaging Films

In this study, we developed an environmentally friendly food cling film exhibiting high antioxidant and antibacterial performances, wherein a novel ionic liquid (IL) of matrine coconut acids ([Mat][Coc]) having excellent...

A New Application of Hollow Nanosilica Added to Modified Polypropylene to Prepare Nanocomposite Films

NANO ◽  
2021 ◽  
pp. 2150117
Author(s):  
Xu Li ◽  
Ying-Jun Zhang ◽  
Chi-Hui Tsou ◽  
Yi-Hua Wen ◽  
Chin-San Wu ◽  
...  
Keyword(s):  
Food Packaging ◽  
Nanocomposite Films ◽  
X Ray Diffraction ◽  
Hollow Silica ◽  
Barrier Materials ◽  
Water Vapor Barrier ◽  
Potential Applications ◽  
And Storage ◽  
Food Packaging Films ◽  
Thermal Stability Of

Since the inception of research on hollow silica, the use of hollow nanosilica (HNS) as additives in barrier materials has not been reported. In this study, we evaluated the capacity of HNS as an additive in modified polypropylene (MPP). According to X-ray diffraction (XRD), the crystallinity, tensile strength, and thermal stability of MPP/HNS nanocomposite containing 0.1[Formula: see text]phr HNS approached maximum values. Moreover, the nanocomposite had the best performance in terms of water vapor barrier and oxygen resistance. The reasons for the improvement in barrier performance were discussed. Scanning electron microscopy revealed that HNS at a low content dispersed well in MPP. In conclusion, the synthesized HNS can be used as an additive in barrier materials, and it would have potential applications in the fields of food packaging films and storage containers or materials.

scholarly journals Transparent and Robust All-Cellulose Nanocomposite Packaging Materials Prepared in a Mixture of Trifluoroacetic Acid and Trifluoroacetic Anhydride

Nanomaterials ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 368 ◽  
Author(s):  
Susana Guzman-Puyol ◽  
Luca Ceseracciu ◽  
Giacomo Tedeschi ◽  
Sergio Marras ◽  
Alice Scarpellini ◽  
...  
Keyword(s):  
Trifluoroacetic Acid ◽  
Food Packaging ◽  
Cellulose Nanofibers ◽  
Barrier Properties ◽  
Trifluoroacetic Anhydride ◽  
Packaging Films ◽  
Force Microscopy ◽  
Water Barrier ◽  
Cellulose Composites ◽  
Food Packaging Films

All-cellulose composites with a potential application as food packaging films were prepared by dissolving microcrystalline cellulose in a mixture of trifluoroacetic acid and trifluoroacetic anhydride, adding cellulose nanofibers, and evaporating the solvents. First, the effect of the solvents on the morphology, structure, and thermal properties of the nanofibers was evaluated by atomic force microscopy (AFM), X-ray diffraction (XRD), and thermogravimetric analysis (TGA), respectively. An important reduction in the crystallinity was observed. Then, the optical, morphological, mechanical, and water barrier properties of the nanocomposites were determined. In general, the final properties of the composites depended on the nanocellulose content. Thus, although the transparency decreased with the amount of cellulose nanofibers due to increased light scattering, normalized transmittance values were higher than 80% in all the cases. On the other hand, the best mechanical properties were achieved for concentrations of nanofibers between 5 and 9 wt.%. At higher concentrations, the cellulose nanofibers aggregated and/or folded, decreasing the mechanical parameters as confirmed analytically by modeling of the composite Young’s modulus. Finally, regarding the water barrier properties, water uptake was not affected by the presence of cellulose nanofibers while water permeability was reduced because of the higher tortuosity induced by the nanocelluloses. In view of such properties, these materials are suggested as food packaging films.

scholarly journals Fabrication of Paper Sheets Coatings Based on Chitosan/Bacterial Nanocellulose/ZnO With Enhanced Antibacterial and Mechanical Properties

2021 ◽  
Author(s):  
Joanna Jabłońska ◽  
Magdalena Onyszko ◽  
Maciej Konopacki ◽  
Adrian Augustyniak ◽  
Rafał Rakoczy ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Bacterial Cellulose ◽  
Food Packaging ◽  
Cellulose Nanofibers ◽  
Mechanical Activity ◽  
Bacterial Nanocellulose ◽  
E Coli ◽  
Cellulose Nanofibres ◽  
Tearing Resistance ◽  
Shape And Size

Here, we designed the composition of the coating of the paper sheets composed of chitosan, bacterial cellulose (nanofibres), and ZnO with boosted antibacterial and mechanical activity. We investigated the compositions with ZnO exhibiting two different sizes/shapes: (1) rods and (2) irregular sphere-like particles. The proposed processing of bacterial cellulose resulted in the formation of nanofibers. Antimicrobial behavior was tested using E. coli ATCC® 25922™ following ASTM E2149-13a standard. Mechanical properties of the paper sheets were measured by comparison of tearing resistance, tensile strength, and bursting strength according to ISO 5270 standard. The increased antibacterial response is assigned to the combination of chitosan and ZnO (independently of its shape and size), while the boosted mechanical behavior is due to bacterial cellulose nanofibers. Therefore, the proposed composition is an interesting multifunctional mixture for coatings in food packaging applications.

Cellulose Application in Food Industry

2017 ◽  
pp. 38-77 ◽  
Author(s):  
Diego Mauricio Sanchez Osorno ◽  
Cristina Castro
Keyword(s):  
Bacterial Cellulose ◽  
Carboxymethyl Cellulose ◽  
Food Packaging ◽  
Environmentally Friendly ◽  
Crystallinity Index ◽  
Cellulose Fiber ◽  
Degree Of Polymerization ◽  
Gelling Agent ◽  
Cellulose Derivatives ◽  
Thickening Agent

Cellulose polysaccharide is the most important component in plants with a fascinating structure and properties. Despite the origin, cellulose is a linear homopolymer of ß-(1-4)-linked D-glucopyranose units varying mainly on purity, degree of polymerization (DP) and crystallinity index. This linear stiff-chain homopolymer is characterized by its hydrophilicity, chirality, biodegradability, broad chemical modifying capacity, and its formation of versatile semicrystalline fiber morphologies. This chapter aims to show the most important applications of cellulose in food, presenting other cellulose derivatives as methylcellulose, carboxymethyl cellulose, and novel cellulose forms as bacterial cellulose. New frontiers, including environmentally friendly cellulose fiber technologies for food packaging, bacterial cellulose in foodstuff and other applications as thickening agent, stabilizing agent, gelling agent, suspending agent were highlighted with future aims, strategies, and perspectives of cellulose research and its applications.

scholarly journals Physical, Mechanical, and Water Vapor Barrier Properties of Starch/Cellulose Nanofiber/Thymol Bionanocomposite Films

Polymers ◽  
2021 ◽  
Vol 13 (23) ◽  
pp. 4060
Author(s):  
Siti Hajar Othman ◽  
Bilguisse Mamadou Wane ◽  
Norhazirah Nordin ◽  
Noor Zafira Noor Hasnan ◽  
Rosnita A. Talib ◽  
...  
Keyword(s):  
Water Vapor ◽  
Food Packaging ◽  
Cellulose Nanofibers ◽  
Antibacterial Properties ◽  
Barrier Properties ◽  
Packaging Materials ◽  
Water Vapor Barrier ◽  
Food Packaging Materials ◽  
Bionanocomposite Films ◽  
Starch Films

The application of starch films, such as food packaging materials, has been restricted due to poor mechanical and barrier properties. However, the addition of a reinforcing agent, cellulose nanofibers (CNF) and also thymol, into the films, may improve the properties of films. This work investigates the effects of incorporating different concentrations of thymol (3, 5, 7, and 10 wt.%) on physical, mechanical, water vapor barrier, and antibacterial properties of corn starch films, containing 1.5 wt.% CNF produced using the solvent casting method. The addition of thymol does not significantly affect the color and opacity of the films. It is found that the tensile strength and Young’s modulus of the films decreases from 10.6 to 6.3 MPa and from 436.9 to 209.8 MPa, respectively, and the elongation at break increased from 110.6% to 123.5% with the incorporation of 10 wt.% thymol into the films. Furthermore, the addition of thymol at higher concentrations (7 and 10 wt.%) improved the water vapor barrier of the films by approximately 60.0%, from 4.98 × 10—9 to 2.01 × 10—9 g/d.m.Pa. Starch/CNF/thymol bionanocomposite films are also found to exhibit antibacterial activity against Escherichia coli. In conclusion, the produced starch/CNF/thymol bionanocomposite films have the potential to be used as antibacterial food packaging materials.

scholarly journals Improvement of Biocomposite Properties Based Tapioca Starch and Sugarcane Bagasse Cellulose Nanofibers

2020 ◽  
Vol 849 ◽  
pp. 96-101 ◽  
Author(s):  
Mochamad Asrofi ◽  
Sujito ◽  
Edi Syafri ◽  
S.M. Sapuan ◽  
R.A. Ilyas
Keyword(s):  
Sugarcane Bagasse ◽  
Cellulose Nanofibers ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Potential Candidate ◽  
Tapioca Starch ◽  
Sem Image ◽  
Transmission Electron ◽  
The Matrix ◽  
Image Displays

Biocomposite based tapioca starch (TS) and sugarcane bagasse cellulose nanofibers (SBCN) was made through casting method. SBCN was prepared by chemical and ultrasonication process. It was successfully displayed by transmission electron microscope (TEM) in range 20 - 45 nm. Meanwhile, particle size analysis (PSA) also supported the distribution diameter of SBCN for 59.75 ± 10.84 nm. SBCN and glycerol were used as reinforcement and plasticizer, respectively. The amount concentration of SBCN was varied from 0 to 8 wt%. Biocomposite was characterized by using scanning electron microscopy (SEM) and tensile test. SEM image displays SBCN is in good interfacial bonding with the matrix. The highest tensile strength of biocomposite was in TS/4SBCN sample for 20.84 MPa. These results showed that SBCN fiber become potential candidate as reinforcement in biocomposite application.

scholarly journals Fabrication of Paper Sheets Coatings Based on Chitosan/Bacterial Nanocellulose/ZnO with Enhanced Antibacterial and Mechanical Properties

2021 ◽  
Vol 22 (14) ◽  
pp. 7383
Author(s):  
Joanna Jabłońska ◽  
Magdalena Onyszko ◽  
Maciej Konopacki ◽  
Adrian Augustyniak ◽  
Rafał Rakoczy ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Bacterial Cellulose ◽  
Food Packaging ◽  
Cellulose Nanofibers ◽  
Mechanical Activity ◽  
Bacterial Nanocellulose ◽  
E Coli ◽  
Tearing Resistance ◽  
Shape And Size

Here, we designed paper sheets coated with chitosan, bacterial cellulose (nanofibers), and ZnO with boosted antibacterial and mechanical activity. We investigated the compositions, with ZnO exhibiting two different sizes/shapes: (1) rods and (2) irregular sphere-like particles. The proposed processing of bacterial cellulose resulted in the formation of nanofibers. Antimicrobial behavior was tested using E. coli ATCC® 25922™ following the ASTM E2149-13a standard. The mechanical properties of the paper sheets were measured by comparing tearing resistance, tensile strength, and bursting strength according to the ISO 5270 standard. The results showed an increased antibacterial response (assigned to the combination of chitosan and ZnO, independent of its shape and size) and boosted mechanical properties. Therefore, the proposed composition is an interesting multifunctional mixture for coatings in food packaging applications.

scholarly journals Influence of biological origin on the tensile properties of cellulose nanopapers

Cellulose ◽  
2021 ◽  
Author(s):  
Katri S. Kontturi ◽  
Koon-Yang Lee ◽  
Mitchell P. Jones ◽  
William W. Sampson ◽  
Alexander Bismarck ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Cell Wall ◽  
Bacterial Cellulose ◽  
Raw Materials ◽  
Cellulose Nanofibers ◽  
Nanofibrillated Cellulose ◽  
Primary Cell Wall ◽  
Biological Origin ◽  
Basic Principles ◽  
Fiber Mats

Abstract Cellulose nanopapers provide diverse, strong and lightweight templates prepared entirely from sustainable raw materials, cellulose nanofibers (CNFs). Yet the strength of CNFs has not been fully capitalized in the resulting nanopapers and the relative influence of CNF strength, their bonding, and biological origin to nanopaper strength are unknown. Here, we show that basic principles from paper physics can be applied to CNF nanopapers to illuminate those relationships. Importantly, it appeared that ~ 200 MPa was the theoretical maximum for nanopapers with random fibril orientation. Furthermore, we demonstrate the contrast in tensile strength for nanopapers prepared from bacterial cellulose (BC) and wood-based nanofibrillated cellulose (NFC). Endemic amorphous polysaccharides (hemicelluloses) in NFC act as matrix in NFC nanopapers, strengthening the bonding between CNFs just like it improves the bonding between CNFs in the primary cell wall of plants. The conclusions apply to all composites containing non-woven fiber mats as reinforcement. Graphic abstract

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