Papermaking properties of bacterial nanocellulose produced from mother of vinegar, a waste product after classical vinegar production

Lavrič, Gregor; Medvescek, Dasa; Skočaj, Matej

doi:10.32964/tj19.4.197

Cited by 9 publications

(4 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The raw material for BNC production was a cellulose-rich bio-film formed after acetic fermentation of apple juice [26] and was obtained from a local vinegar producer. Bio-film was thermo-mechanically treated as described in the article by Lavrič, Medvešček, and Skočaj [27]. Treatment separated the individual nanofibrils, resulting in the formation of a homogeneous semi-transparent 0.5% w/w BNC gel.…”

Section: Bnc Productionmentioning

confidence: 99%

Functional Nanocellulose, Alginate and Chitosan Nanocomposites Designed as Active Film Packaging Materials

Lavrič¹,

Oberlintner

Fiļipova

et al. 2021

Polymers

View full text Add to dashboard Cite

The aim of the study was to characterize and compare films made of cellulose nanocrystals (CNC), nano-fibrils (CNF), and bacterial nanocellulose (BNC) in combination with chitosan and alginate in terms of applicability for potential food packaging applications. In total, 25 different formulations were made and evaluated, and seven biopolymer films with the best mechanical performance (tensile strength, strain)—alginate, alginate with 5% CNC, chitosan, chitosan with 3% CNC, BNC with and without glycerol, and CNF with glycerol—were selected and investigated regarding morphology (SEM), density, contact angle, surface energy, water absorption, and oxygen and water barrier properties. Studies revealed that polysaccharide-based films with added CNC are the most suitable for packaging purposes, and better dispersing of nanocellulose in chitosan than in alginate was observed. Results showed an increase in hydrophobicity (increase of contact angle and reduced moisture absorption) of chitosan and alginate films with the addition of CNC, and chitosan with 3% CNC had the highest contact angle, 108 ± 2, and 15% lower moisture absorption compared to pure chitosan. Overall, the ability of nanocellulose additives to preserve the structure and function of chitosan and alginate materials in a humid environment was convincingly demonstrated. Barrier properties were improved by combining the biopolymers, and water vapor transmission rate (WVTR) was reduced by 15–45% and oxygen permeability (OTR) up to 45% by adding nanocellulose compared to single biopolymer formulations. It was concluded that with a good oxygen barrier, a water barrier that is comparable to PLA, and good mechanical properties, biopolymer films would be a good alternative to conventional plastic packaging used for ready-to-eat foods with short storage time.

show abstract

Section: Bnc Productionmentioning

confidence: 99%

Functional Nanocellulose, Alginate and Chitosan Nanocomposites Designed as Active Film Packaging Materials

Lavrič¹,

Oberlintner

Fiļipova

et al. 2021

Polymers

View full text Add to dashboard Cite

show abstract

“…The bacterial nanocellulose was obtained using the process described by Lavrič et al [ 46 ] from the mother of vinegar. The mother of vinegar was produced using the classical (static) process of apple vinegar production.…”

Section: Methodsmentioning

confidence: 99%

“…The mixture was then homogenized (Kinematica Polytron PT45/80) for 1 min at 7000 revolutions per minute (RPM). Additional treatment in NaOH under the same conditions was applied again, further reducing the number of impurities in the BNC sample after the treated sample was filtered and continuously filtered, resulting in a thin plate of BNC [ 12 , 46 ].…”

Section: Methodsmentioning

confidence: 99%

The Development of a Bacterial Nanocellulose/Cationic Starch Hydrogel for the Production of Sustainable 3D-Printed Packaging Foils

Dermol,

Borin,

Gregor-Svetec

et al. 2024

Polymers

View full text Add to dashboard Cite

Polymers have become an important part of everyday life, but most of the polymers currently used are petroleum-based. This poses an environmental problem, especially with respect to products that are quickly discarded. For this reason, current packaging development focuses on sustainable materials as an alternative to synthetic ones. Nanocellulose, a relatively new material derived from cellulose, has unique properties such as high strength, low density, high surface area, and good barrier properties, making it popular in various applications. Additionally, 3D printing technologies have become an important part of industrial and commercial processes, enabling the realization of innovative ideas and functionalities. The main aim of this research was to develop a hydrogel of bacterial nanocellulose with suitable rheological properties for the 3D printing of polymer foils. Three variations of bacterial nanocellulose hydrogel differing in ratios of bacterial nanocellulose to cationic starch were produced. The rheological studies confirmed the suitability of the hydrogels for 3D printing. Foils were successfully 3D-printed using a modified 3D printer. The physical-mechanical, surface, and optical properties of the foils were determined. All foils were homogeneous with adequate mechanical properties. The 3D-printed foils with the highest amount of cationic starch were the most homogeneous and transparent and, despite their rigidity, very strong. All foils were semi-transparent, had a non-glossy surface, and retained poor water wettability.

show abstract

“…In this research three commercial coated cardboards (Sample 3 -MM Excellent TOP 230 g/m 2 , Sample 2 -MM Grafopak 250 g/m 2 , Sample 1 -Kromopak 230g/m 2 ) were tested with adhesive EUKALIN 6550-VL-80 water-based dispersion (REF samples) (Brookfield viscosity of 1000 mPas). The adhesive was enhanced with a 7% BNC solution (BNC samples) wich was obtained from an alternative raw material -vinegar mother as described in an article by Lavrič, Medvešček and Skočaj (Lavrič, Medvešček and Skočaj, 2020).…”

mentioning

confidence: 99%

Bacterial nanocellulose enhanced cardboard adhesion joint tested with Y-peel and T-peel testing methods

Karlovits¹,

Lavrič²,

Kavčič³

2022

Proceedings - The Eleventh International Symposium GRID 2022

View full text Add to dashboard Cite

The demands on the adhesive joints for packaging are important during conversion, transport, storage, shelf exposure, and end-of-life operations of paper-based packaging. During this lifecycle, the adhesive joint is under constant loading from environmental conditions (e.g. forces from the surroundings such as other packaging units, dynamical forces from the machines, and/or climate changes such as temperature and relative humidity). The contribution from mechanical bonding can be particularly important for solid boards where the adhesive bonding is achieved through the mechanical interlocking of the adhesive into irregularities and pores of the carton-board surface. The formation of an adhesive joint with dispersion adhesives is affected by the rheological properties of the adhesive layer, the structure and absorption properties of the board surface. There are many test methods intended to determine the strength of an adhesive including peel, shear, cleavage and tension tests. Peel tests are common for tapes, labels, coatings and other bonded materials. The most common methods include T peel, Y peel and angle peel tests using tensile test machines. The cardboard adhesives that are currently in use have a large share of dispersion adhesives (PVAC, EVA, acrylic and PU) which are water-based adhesive systems that form bonds through physical hardening when the water evaporates. Sustainability issues require replacement of these chemicals with bio-based ones. Based on our previous research, bacterial nanocellulose (BNC) can increase the bonding strength of adhesive joints for different kinds of materials. In this study, 3 different cardboards with dispersion adhesive which had the addition of 7% of BNC were used. Zwick multitester with two methods (Y peel and T peel) was used to determine the strength of the cardboard joints. The results indicate differences in force elongation results due to different testing methods, where some of the cardboard properties and BNC had a positive effect on the overall adhesion joint strength.

show abstract

Papermaking properties of bacterial nanocellulose produced from mother of vinegar, a waste product after classical vinegar production

Cited by 9 publications

References 42 publications

Functional Nanocellulose, Alginate and Chitosan Nanocomposites Designed as Active Film Packaging Materials

Functional Nanocellulose, Alginate and Chitosan Nanocomposites Designed as Active Film Packaging Materials

The Development of a Bacterial Nanocellulose/Cationic Starch Hydrogel for the Production of Sustainable 3D-Printed Packaging Foils

Bacterial nanocellulose enhanced cardboard adhesion joint tested with Y-peel and T-peel testing methods

Contact Info

Product

Resources

About