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Titolo:
Role of Tween 80 in biobleaching of unbleached hardwood kraft pulp with manganese peroxidase
Autore:
Ehara, K; Tsutsumi, Y; Nishida, T; Ehara, K;
Indirizzi:
Univ Shizouka, Fac Agr, Shizuoka 4228529, Japan Univ Shizouka Shizuoka Japan 4228529 a, Fac Agr, Shizuoka 4228529, Japan Gifu Univ, United Grad Sch Agr Sci, Gifu 5011112, Japan Gifu Univ Gifu Japan 5011112 nited Grad Sch Agr Sci, Gifu 5011112, Japan
Titolo Testata:
JOURNAL OF WOOD SCIENCE
fascicolo: 2, volume: 46, anno: 2000,
pagine: 137 - 142
SICI:
1435-0211(2000)46:2<137:ROT8IB>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
POLYCYCLIC AROMATIC-HYDROCARBONS; PHANEROCHAETE-CHRYSOSPORIUM; NONPHENOLIC LIGNIN; LIPID-PEROXIDATION; DEGRADATION; OXIDATION; SURFACTANTS; COPPER; BIODEGRADATION; DECOMPOSITION;
Keywords:
lignin; manganese peroxidase; biobleaching; surfactant; lipid peroxidation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Ehara, K Univ Shizouka, Fac Agr, Shizuoka 4228529, Japan Univ Shizouka Shizuoka Japan 4228529 r, Shizuoka 4228529, Japan
Citazione:
K. Ehara et al., "Role of Tween 80 in biobleaching of unbleached hardwood kraft pulp with manganese peroxidase", J WOOD SCI, 46(2), 2000, pp. 137-142

Abstract

The role of Tween 80 in biobleaching of unbleached hardwood kraft pulp (HWKP) with manganese peroxidase (MnP) was investigated. Among the surfactants(e.g., Tween 80, Tween 20, CHAPSO) the most significant brightness increase was obtained with Tween 80, Tween 80 and Tween 20 exhibited several effects, such as dispersion of degraded lignin and activation of MnP, that partly contributed to the brightening of HWKP during MnP treatment. However, these characteristics did not explain the most appreciable effect on the brightness increase by Tween 80. Lipid peroxidation of surfactants during MnP biobleaching was determined by measuring the peroxide value (POV). The order of the POV increase was consistent with that of the brightness increase of pulp during MnP treatment in the presence of various surfactants or linolenic acid. However, radicals and peroxides derived from lipid (linolenic acid) peroxidation by lipoxidase hardly brightened the HWKP by themselves. These results suggested that Tween 80 was peroxidized by Mn(III), and that Mn(III) and lipid peroxidation of Tween 80 synergistically brightened HWKP.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/12/20 alle ore 18:32:49