Actinomycetes as a factor in odour problems affecting drinking water from the North Saskatchewan River

Isolation, identification and odour-producing abilities of geosmin/2-MIB in actinomycetes from sediments in Lake Lotus, China

“…Among the odour-producing isolates, the majority produced geosmin only, some produced both geosmin and 2-MIB, and the minority produced 2-MIB only. Similar results were reported by Jensen et al (1994), who suggested that odour production by actinomycetes may vary with cultivation nutrient conditions. Odourproducing streptomycetes could also be isolated from the mud of the reservoir (Tung et al 2006 (Aoyama 1990;Jensen et al 1994).…”

“…In order to decrease the occurrence of geosmin and 2-MIB, it is desirable to better understand their sources. Cyanobacteria and actinomycetes have long been known to be associated with geosmin and 2-MIB occurrence in water (Henatsch & Jü ttner 1986;Jensen et al 1994;Lanciotti et al 2003;Westerhoff et al 2005), while the exact contribution of actinomycetes to odours in fresh water still lacks sufficient direct evidence. doi: 10.2166/aqua.2009.018 In fact, early evidence indicated that the two compounds originated from actinomycetes (Gerber & Lechevalier 1965;Gerber 1979).…”

Contribution of Streptomyces in sediment to earthy odor in the overlying water in Xionghe Reservoir, China

“…Actinomycetes in water bodies are often considered to be transported from the terrestrial environment by runoff (Zaitlin et al, 2003;Jensen et al, 1994). Some studies have shown that actinomycetes are associated with the occurrence of odor in water (Lanciotti et al, 2003;Jensen et al, 1994). Many of the actinomycetes examined were indeed isolated from sediments (Tung et al, 2006;Zaitlin et al, 2003).…”

“…Production of geosmin and 2-MIB varies significantly when actinomycetes are cultivated under different conditions of temperature, pH, carbon dioxide, phosphorus, and other nutrients (Schrader and Blevins, 2001;Dionigi and Ingram, 1994). Actinomycetes in water bodies are often considered to be transported from the terrestrial environment by runoff (Zaitlin et al, 2003;Jensen et al, 1994). Some studies have shown that actinomycetes are associated with the occurrence of odor in water (Lanciotti et al, 2003;Jensen et al, 1994).…”

Occurrence of odour-causing compounds in different source waters of China

“…source water pollution from industrial discharge, surface runoff) sources. In addition to some well-known biogenic metabolites such as MIB and geosmin which cause earthy-musty odours (Yagi et al 1985;Jensen et al 1994;Izaguirre et al 1999), attention should be paid to other odorous compounds.…”