Ex situ Coloration of Laccase-Entrapped Bacterial Cellulose with Natural Phenolic Dyes

Kim, Hyunjin; Eun, Song Ji; Rim, Kim Hye

doi:10.5850/jksct.2021.45.5.866

Cited by 5 publications

(3 citation statements)

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“…Since the original color of BC is mostly transparent or yellowish white, the dyeing process is essential for introducing various colors to BC bio-leather [12]. Natural dyes are non-toxic, non-carcinogenic, biodegradable, and do not cause environmental pollution as they do not generate toxic wastewater [13].…”

Section: Introductionmentioning

confidence: 99%

Production of coffee-dyed bacterial cellulose as a bio-leather and using it as a dye adsorbent

Kim

2022

PLoS ONE

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Owing to its sustainability and environmentally friendliness, bacterial cellulose (BC) has received attention as a zero-waste textile material. Since the color of original BC was mostly yellowish white, a dyeing process is necessary to suggest BC as a textile. Thus, this study aimed to suggest a natural dyeing method using coffee to produce an eco-friendly coffee-dyed bacterial cellulose (BC-COF) bio-leather and to propose a reusing method as a dye adsorbent. To determine the dyeing and mordanting conditions with the highest color strength value, parameters such as dyeing temperature, time, mordanting methods were evaluated. Fourier-transform infrared spectroscopy and X-ray diffraction analysis confirmed that BC-COF was successfully colorized with coffee without changing its chemical and crystalline structures. In addition, field-emission scanning electron microscopy and Brunauer-Emmett-Teller surface area analysis confirmed that coffee molecules were successfully incorporated into fiber structures of BC. The effects of pH, concentration, temperature, and time on the adsorption of methylene blue dye using BC-COF bio-leather were also evaluated using ultraviolet-visible spectroscopy and zeta potential measurement. The results showed that BC-COF was found to be most effective when pH 6 of methylene blue solution with a concentration of 50 mg/L was adsorbed for 30 minutes at 25°C. Moreover, BC-COF could be reused for multiple times and had better dye adsorption rate compared to the original BC. From the results, it was confirmed that BC-COF could be employed as a dye adsorbent.

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Section: Introductionmentioning

confidence: 99%

Production of coffee-dyed bacterial cellulose as a bio-leather and using it as a dye adsorbent

Kim

2022

PLoS ONE

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“…8 As BC has high purity, additional refining processes are not required to remove impurities such as lignin and hemicellulose. 9 BC has various applications as a result of its good biocompatibility, mechanical properties, and hydrophilicity. 10 In addition, the production processes of BC can be shortened because BC is produced in a nonwoven fabric state with a thickness of approximately 1 cm within 7-10 days, and can be produced in the desired shape.…”

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“…10 In addition, the production processes of BC can be shortened because BC is produced in a nonwoven fabric state with a thickness of approximately 1 cm within 7-10 days, and can be produced in the desired shape. 7,9 Recently, BC has received great attention as a leather substitute because it has an appearance and tactility similar to those of cowhide leather when dried. 6,7 However, due to its cellulosic structure, BC is a flammable material that burns rapidly when exposed to flame, and continues to burn after the flame source is removed.…”

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Development of bacterial cellulose with enhanced flame retardancy and flexibility by phosphorylation with phytic acid and xylitol

Shim,

Kim,

Kim

2024

Textile Research Journal

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This study aims to develop bacterial cellulose with enhanced flame retardancy and flexibility. The bacterial cellulose was phosphorylated with phytic acid to improve its flame retardancy. Urea and xylitol were used as plasticizers, and their effects in improving the flexibility of bacterial cellulose were compared and evaluated. The optimal conditions for producing phosphorylated bacterial cellulose were found to be as follows: phytic acid:xylitol molar ratio of 1:10, phytic acid concentration of 10% (o.w.f.), and shaking at 30°C for 30 min at 90 rpm in a shaking water bath. A thermogravimetric analysis revealed that phosphorylated bacterial cellulose exhibited enhanced thermal properties compared with the original bacterial cellulose. Fourier transform infrared spectroscopy and X-ray diffraction confirmed that the chemical and crystalline structures of bacterial cellulose remained unchanged after phosphorylation. Mechanical properties such as the tensile strength, flexibility, and dimensional stability of the as-produced phosphorylated bacterial cellulose improved by using xylitol. In particular, the tensile strength and flexibility of the phosphorylated bacterial cellulose increased 5.7 and 2-fold, respectively, compared with those of the original bacterial cellulose. Therefore, this study demonstrated that the flame retardancy and flexibility of bacterial cellulose can be improved by using eco-friendly materials such as phytic acid and xylitol. The as-produced phosphorylated bacterial cellulose can be proposed as a fabric material with sufficient mechanical properties.

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Production of flame-resistant bacterial cellulose using whey protein isolate or casein via physical entrapment and crosslinking

Kim,

Kim

2023

Cellulose

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Ex situ Coloration of Laccase-Entrapped Bacterial Cellulose with Natural Phenolic Dyes

Cited by 5 publications

References 0 publications

Production of coffee-dyed bacterial cellulose as a bio-leather and using it as a dye adsorbent

Production of coffee-dyed bacterial cellulose as a bio-leather and using it as a dye adsorbent

Development of bacterial cellulose with enhanced flame retardancy and flexibility by phosphorylation with phytic acid and xylitol

Production of flame-resistant bacterial cellulose using whey protein isolate or casein via physical entrapment and crosslinking

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