An Universal Stoichiometric Relationship between Weight Loss and Glucose Formation in the Enzymatic Treatment of Cellulosic Fibers with Cellulase from Flamentous Fungi.

Nakano, Shigeyuki; Hirase, Ryuji; Komurasaki, Kazuhiko; El-Salmawy, Ahmed; Kunugi, Shigeru; Kimura, Yoshiharu

doi:10.2115/fiber.57.279

Sen-i Gakkaishi

2001

DOI: 10.2115/fiber.57.279

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An Universal Stoichiometric Relationship between Weight Loss and Glucose Formation in the Enzymatic Treatment of Cellulosic Fibers with Cellulase from Flamentous Fungi.

Shigeyuki Nakano

Ryuji Hirase

Kazuhiko Komurasaki

et al.

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Cited by 3 publications

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“…In contrast, the application of biotechnology for textile processing has also attracted attention as a new technique that does not cause environmental pollution. In particular, enzyme processing of cotton, wool and PET has been widely studied [5][6][7][8][9]. In our Abstract Enzymatic modification of polylactic acid fibers is investigated using various kinds of protease and lipase.…”

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confidence: 99%

Modification of Polylactic Acid Fiber with Enzymatic Treatment

Sawada

Urakawa

Ueda

2007

Textile Research Journal

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Enzymatic modification of polylactic acid fibers is investigated using various kinds of protease and lipase. The effects of enzymes on the hydrolysis of polylactic acid fibers is evaluated by means of fiber weight loss, fiber strength and fiber surface observation. It is found that proteases derived from Bacillus subtilis and Bacillus licheniformis had remarkable activities on polylactic acid fibers. It is also observed that the hydrolysis of polylactic acid fibers with these enzymes causes a serious drop in fiber strength, although fiber weight loss is lower.

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mentioning

confidence: 99%

Modification of Polylactic Acid Fiber with Enzymatic Treatment

Sawada

Urakawa

Ueda

2007

Textile Research Journal

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Enzyme processing of wool fabrics in a non‐ionic surfactant reverse micellar system

Sawada

Ueda

2004

J of Chemical Tech & Biotech

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Modification of wool fabrics with an enzyme in a reverse micellar system has been investigated using polyoxyethylene sorbitan trioleate as a surfactant. The protease, Bioprase 30L, used in this study was satisfactorily solubilized in the reverse micellar system and maintained its activity even in an organic media. Modification of wool fabrics with Bioprase 30L was evaluated by the fabric's weight loss, measurement of tear strength, scanning electron microscopy, and measurement of shrinkage. Effective modification of wool fabrics with enzymatic hydrolysis can be attained without causing serious loss of fiber strength.

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Fine Structure and Physical Properties of Chitosan/Sericin Blend Films

Kang¹,

Noh²,

Hwang³

et al. 2012

Textile Science and Engineering

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The uncrosslinked and crosslinked by ethylene glycol diglycidyl(EGDE) chitosan/sericin blend films were prepared by solvent blending method. Physicochemical properties of the prepared blend films according to various blend ratios were investigated. This was carried out by using universal testing machine, thermogravimeter(TGA), differential scanning calorimeter(DSC), wide angle X-ray diffractometer(WAXD), Fourier transform infrared spectrum(FTIR) and scanning electron microscopy(SEM). With an increase in the sericin mixing ratio, tensile stress increased whereas the tensile strain decreased for uncrosslinking blend films. For a cross linked chitosan/sericin blend film by EGDE, both the tensile stress and strain decreased. Chitosan/sericin blend films exhibit an excellent thermal stability when sericin mixing ratio is 25%. In the infrared spectra, chitosan/sericin blend films showed an absorption band of amide I peak at 1630 cm-1 and it is concerned with C=O stretching vibration by strong hydrogen-bond between inter-molecular. These also showed an absorption band of amide II peak at 1521 cm-1 concerned with N-H bending vibration. The absorption band of amide I peak decreased with an increase in the chitosan mixing ratio. We identified that there was good miscibility between chitosan and sericin. The waterretention values(WRV) of chitosan/sericin blend films increase as the amount of sericin is raised and this owes to the hydrophilic nature of sericin. Weight loss of the citosan/sericin blend films by cleaning with an aqueous sodium hydroxide increased with an increase in the sericin mixing ratio. This loss is the loss of acetic acid and sericin in the chitosan/sericin blend films and this is because of the molecular weight of the sericin is 1/5 of the chitosan and sericin is dissolved into NaOH solution. Weight loss increased when sericin content was more than 50% for the cross linked chitosan/sericin blend films. From the structure analysis, we identified that there was good miscibility and strong intermolecular interaction between the chitosan molecules that resulted from intermolecular hydrogen bonds.

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An Universal Stoichiometric Relationship between Weight Loss and Glucose Formation in the Enzymatic Treatment of Cellulosic Fibers with Cellulase from Flamentous Fungi.

Cited by 3 publications

References 0 publications

Modification of Polylactic Acid Fiber with Enzymatic Treatment

Modification of Polylactic Acid Fiber with Enzymatic Treatment

Enzyme processing of wool fabrics in a non‐ionic surfactant reverse micellar system

Fine Structure and Physical Properties of Chitosan/Sericin Blend Films

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