A new approach for biofinishing of cellulose-containing fabrics using acid cellulases

Ibrahim, Nabil A.; El-Badry, Kh. M.; Eid, Basma M.; Hassan, T. M.

doi:10.1016/j.carbpol.2010.07.025

Cited by 81 publications

(23 citation statements)

References 8 publications

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“…SEM images provide a qualitative confirmation of biopolishing with cellulases. Depilling or surface smoothening structural changes on cotton fabric occurred during biopolishing using cellulases were studied by SEM imaging (Arumugam et al, 2007;Ibrahim et al, 2011;Verenich et al, 2008). Unlike Cp-CelD from C. thermocellum that maintained >90% activity at pH 9 or 100% activity at 70°C, a sharp reduction (~50%) in Cp-Eg1 activity in biopolishing may be attributed to the gene source (T. reesei).…”

Section: Discussionmentioning

confidence: 99%

Validation of leaf enzymes in the detergent and textile industries: launching of a new platform technology

Kumari

Singh

Ray

et al. 2019

Plant Biotechnology Journal

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Summary Chemical catalysts are being replaced by biocatalysts in almost all industrial applications due to environmental concerns, thereby increasing their demand. Enzymes used in current industries are produced in microbial systems or plant seeds. We report here five newly launched leaf‐enzyme products and their validation with 15 commercial microbial‐enzyme products, for detergent or textile industries. Enzymes expressed in chloroplasts are functional at broad pH /temperature ranges as crude‐leaf extracts, while most purified commercial enzymes showed significant loss at alkaline pH or higher temperature, required for broad range commercial applications. In contrast to commercial liquid enzymes requiring cold storage/transportation, chloroplast enzymes as a leaf powder can be stored up to 16 months at ambient temperature without loss of enzyme activity. Chloroplast‐derived enzymes are stable in crude‐leaf extracts without addition of protease inhibitors. Leaf lipase/mannanase crude extracts removed chocolate or mustard oil stains effectively at both low and high temperatures. Moreover, leaf lipase or mannanase crude‐extracts removed stain more efficiently at 70 °C than commercial microbial enzymes (<10% activity). Endoglucanase and exoglucanase in crude leaf extracts removed dye efficiently from denim surface and depilled knitted fabric by removal of horizontal fibre strands. Due to an increased demand for enzymes in the food industry, marker‐free lettuce plants expressing lipase or cellobiohydrolase were created for the first time and site‐specific transgene integration/homoplasmy was confirmed by Southern blots. Thus, leaf‐production platform offers a novel low‐cost approach by the elimination of fermentation, purification, concentration, formulation and cold‐chain storage/transportation. This is the first report of commercially launched protein products made in leaves and validated with current commercial products.

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Section: Discussionmentioning

confidence: 99%

Validation of leaf enzymes in the detergent and textile industries: launching of a new platform technology

Kumari

Singh

Ray

et al. 2019

Plant Biotechnology Journal

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“…Besides, with increased awareness on human health and hygiene as well as eco-friendly processed goods among consumers, cellulosic textiles which are finished with natural products, such as natural dyes for coloration, an enzyme for bio-polishing, neem and aloe vera extract for antimicrobial finishing, etc. [5][6][7][8][9][10][11] are increasing attention. So far, very few researches have reported fire retardancy to cellulosic textile materials using natural products.…”

Section: Introductionmentioning

confidence: 99%

Development of thermally stable and hygienic colored cotton fabric made by treatment with natural coconut shell extract

Teli

Pandit

2017

Journal of Industrial Textiles

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As far as the value addition of textile is concerned, flame retardancy of textile materials is considered to be one of the most important properties in textile finishing by both industries as well as academic researchers. Flame-retardant property with thermal stability was imparted to cotton by using green coconut (Cocos nucifera Linn) shell extract, a natural waste source of coconut. Coconut shell extract was analyzed by high-performance liquid chromatography, Fourier transform infrared spectroscopy, energy-dispersive spectrometry and its phytochemical analysis was also carried out. The coconut shell extract (acidic after extraction) was applied in three different pH (acidic, neutral, and alkaline) conditions to the cotton fabric. Flame-retardant properties of the untreated and the treated cotton fabrics were analyzed by limiting oxygen index and vertical flammability. The study showed that all the treated fabrics had good flame resistance property compared to that of the untreated fabric. The limiting oxygen index value was found to increase by 72.2% after application of the coconut shell extract from alkaline pH. Pyrolysis and char formation behavior of the concerned fabrics were studied using thermogravimetric analysis and differential scanning calorimetric analysis in a nitrogen atmosphere. The physicochemical composition of the untreated and coconut shell extract treated cotton fabrics were analyzed by attenuated total reflection-Fourier transform infrared, scanning electron microscope, and energy-dispersive X-ray spectroscopy. Also, treated cotton fabric showed natural brown color and antibacterial

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“…Most of the cotton and cotton mixed garments tend to become fluffy and dull during repeated washing due to detachment of microfibrils on the surface of garments. Cellulase treatment can restore a smooth surface and original color to the garments by removing these microfibrils [137]. According to a statistics of India Brand Equity Foundation (IBEF), Indian textile market has increased from US$ 99 Billion in 2014 to US$137 Billion in 2016 and exhibited a CAGR of 17.6% during the period 2014-2016.…”

Section: Textile Industrymentioning

confidence: 99%

Overview of the Process of Enzymatic Transformation of Biomass

Singh¹,

Devi²,

Bishnoi³

et al. 2019

Elements of Bioeconomy

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Cellulase is an enzyme which depolymerizes the cellulose into glucose. Cellulases are produced by a diverse array of microbes including fungi, bacteria, yeast and actinomycetes. Considerable research for understanding the mechanism of cellulases began in early 1950s because of the significant use of these enzymes in various industries. This review provides a general account structure and availability of lignocellulosic biomass, pretreatment strategies for effective digestion, cellulase producing organisms, cellulase activity assay, and enzymology of cellulose degradation. Cellulase production, optimization, purification and characterization studies in addition to the industrial application of cellulase have also been discussed. At last a brief account of present market scenario of cellulases and future prospects of the study are also taken into account.

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A new approach for biofinishing of cellulose-containing fabrics using acid cellulases

Cited by 81 publications

References 8 publications

Validation of leaf enzymes in the detergent and textile industries: launching of a new platform technology

Validation of leaf enzymes in the detergent and textile industries: launching of a new platform technology

Development of thermally stable and hygienic colored cotton fabric made by treatment with natural coconut shell extract

Overview of the Process of Enzymatic Transformation of Biomass

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