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Titolo:
Formation of stable foam by the cells and culture supernatant of Gordonia (Nocardia) amarae
Autore:
Iwahori, K; Tokutomi, T; Miyata, N; Fujita, M;
Indirizzi:
Univ Shizuoka, Inst Environm Sci, Shizuoka 4228526, Japan Univ Shizuoka Shizuoka Japan 4228526 vironm Sci, Shizuoka 4228526, Japan Kurita Water Ind Ltd, Div Res & Dev, Kanagawa 2430122, Japan Kurita Water Ind Ltd Kanagawa Japan 2430122 Dev, Kanagawa 2430122, Japan Osaka Univ, Grad Sch Engn, Suita, Osaka 5650871, Japan Osaka Univ Suita Osaka Japan 5650871 ch Engn, Suita, Osaka 5650871, Japan
Titolo Testata:
JOURNAL OF BIOSCIENCE AND BIOENGINEERING
fascicolo: 1, volume: 92, anno: 2001,
pagine: 77 - 79
SICI:
1389-1723(200107)92:1<77:FOSFBT>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
ACTIVATED-SLUDGE; SURFACTANTS;
Keywords:
Gordonia (Nocardia) amarae; activated sludge foam; scum; biosurfactant; hydrophobicity;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Iwahori, K Univ Shizuoka, Inst Environm Sci, 52-1 Yada, Shizuoka 4228526, Japan Univ Shizuoka 52-1 Yada Shizuoka Japan 4228526 4228526, Japan
Citazione:
K. Iwahori et al., "Formation of stable foam by the cells and culture supernatant of Gordonia (Nocardia) amarae", J BIOSCI BI, 92(1), 2001, pp. 77-79

Abstract

Gordonia amarae is the cause of foaming activated sludge. In this study, the mechanism of foam formation by G. amarae SC1 was investigated. A liquid culture of SCI cells generated a stable foam when shaken reciprocally. Thisfoam formation was dependent on the presence of both bacterial cells and culture supernatant. A high-molecular-weight fraction (Mw>10000) of the supernatant was capable of emulsifying n-hexadecane in addition to exhibiting foaming activity, indicating that it contains a surface-active substance(s). The bacterial cells showed a high affinity to hexadecane. This hydrophobiccell surface property might be involved in the attachment of cells to air bubbles to generate a stable foam. The results demonstrated the participation of cells and the extracellular biosurfactant in the formation and stabilization of foam in G. amarae SCI culture.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/05/20 alle ore 14:25:30