Characterization of Odorous Compounds in Rotten Blue-green Algae

Yasuhara, Akio; Fuwa, Keiichirō

doi:10.1080/00021369.1982.10865323

Cited by 7 publications

(7 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, geosmin was detected as the earthy odorant in this study, which might be attributed to algal species transformation in recent years, which needs further research efforts. Other algal metabolites (Yasuhara and Fuwa, 1982;Watson, 2004;Zhang et al, 2013), including heptanal, 2-nonenal, 2,6-nonadienal, decanal, undecanal, butyl butanoate and β-ionone, were identified as associated with the remaining olfactometry peaks. Heptanal could produce a fishy/oily odor with an OTC of 3000 ng/L, and 2-nonenal and 2,6-nonadienal could produce a cucumber odor with OTCs of 800 ng/L and 80 ng/L, respectively (Watson, 2004).…”

Section: Odorant Identification By Combining the Data From Gc-o/ms Anmentioning

confidence: 99%

Identification of complex septic odorants in Huangpu River source water by combining the data from gas chromatography-olfactometry and comprehensive two-dimensional gas chromatography using retention indices

Guo

Yang

Wen

et al. 2016

Science of The Total Environment

View full text Add to dashboard Cite

Identification of the trace odorants causing the septic odors in source waters with complex matrixes has long been a big challenge. The Huangpu (HP) River, an important source water for Shanghai, has long been suffering from septic and musty odors, although major odorants have not been identified. In this study, combining the data from gas chromatography-olfactometry with mass spectrometry (GC-O/MS) and comprehensive twodimensional gas chromatography with time-of-flight mass spectrometry (GC × GC-TOFMS) using retention indices (RIs) was used for the identification of odorants in HP source water. Olfactometry peaks detected in water extracts by GC-O/MS were combined with the chromatography peaks detected by GC × GC-TOFMS based on the RIs determined using the retention times (RTs) of alkanes C7-C30. A total of thirteen olfactometry peaks were obtained though GC-O/MS analysis, and potential odorants corresponding to each of the olfactometry peaks were screened based on the odor characteristics and match similarity using GC × GC-TOFMS. Finally, fourteen odorants (one odorant was detected in GC × GC-TOFMS without an olfactometry peak), including three septic odorants (bis(2-chloroisopropyl) ether, diethyl disulfide and dimethyl disulfide) and two musty ones (geosmin and 2-MIB), were confirmed by using authentic standards. The septic and musty odorants in six Contents lists available at ScienceDirectScience of the Total Environment j o u r n a l h o m e p a g e : w w w . e l s e v i e r . c o m / l o c a t e / s c i t o t e n v source water samples taken over a period of six months were quantified. Bis(2-chloroisopropyl) ether, with an odor activity value (OAV) of 1.84-3.2, was found to be a major septic odorant in HP source water, followed by diethyl disulfide (OAV 1.56-1.96) and dimethyl disulfide (OAV 0.37-2.42), while geosmin (OAV 4.37-11.44) was the major musty odorant, followed by 2-MIB (OAV 1.13-1.89). This is the first comprehensive study focusing on the identification of odorants in a complex source water. The integrated approach used in this study could be applied for the identification of odorants in other complex source waters suffering similar odor problems.

show abstract

Section: Odorant Identification By Combining the Data From Gc-o/ms Anmentioning

confidence: 99%

Identification of complex septic odorants in Huangpu River source water by combining the data from gas chromatography-olfactometry and comprehensive two-dimensional gas chromatography using retention indices

Guo

Yang

Wen

et al. 2016

Science of The Total Environment

View full text Add to dashboard Cite

show abstract

“…And, the species responsible for the production of geosmin needs further study. The aldehyde compounds, including hexanal, heptanal, nonanal and decanal, were mainly associated with algal metabolites (Yasuhara and Fuwa, 1982;Watson, 2004;Zhang et al, 2013).…”

Section: Odorant Removal In Wtpmentioning

confidence: 99%

Simultaneous removal of multiple odorants from source water suffering from septic and musty odors: Verification in a full-scale water treatment plant with ozonation

Guo

Yang

et al. 2016

Water Research

View full text Add to dashboard Cite

a b s t r a c tOzonation is known to be very effective in the removal of odorants from source water. However, it is not known if ozonation is effective in the removal of multiple odorants causing different types of odors. In this study, the removal performance for odors and odorants were evaluated in a Water Treatment Plant (WTP), which was equipped with coagulation, sedimentation, ozonation, biological activated carbon (BAC) filtration, sand filtration, and chlorination in succession and located in the downstream of the Huangpu (HP) River, over the period from April, 2014 to April, 2015. Flavor profile analysis (FPA) results showed that the source water was constantly associated with septic and musty odors. Geosmin and 2-MIB, with an average OAV of 4.54 and 1.38, respectively, were the major odorants for musty odor, while bis(2-chloroisopropyl) ether, DEDS and DMDS with an average OAV of 2.35, 1.65 and 0.78, respectively, might be responsible for the septic odor. While the musty odor could be removed effectively through the combination of ozonation and BAC, the septic odor and associated odorants required further treatment with sand filtration and chlorination for complete removal. It is clear that the advanced treatment process was effective for the treatment of source water containing complicated odorants. It should be noted that the sedimentation process needs careful management because release of odorants may occur during the treatment. The result of this study will be helpful for the mitigation of odors in WTP using source waters suffering from complicated odor problems.

show abstract

“…The major component was heptadecane (57.0%). Heptadecane has been reported to be a common major volatile component in many other cyanobacterial species (13,(21)(22)(23). The second most abundant component was 2-methylisoborneol (29.4%), responsible for the musty odor associated with this cyanobacteria (5).…”

Section: Resultsmentioning

confidence: 99%

Volatile Components of the Cyanobacterium Oscillatoria perornata (Skuja)

Tellez

Schrader

Kobaisy

2001

J. Agric. Food Chem.

View full text Add to dashboard Cite

Volatile compounds were identified from unialgal continuous cultures of the cyanobacterium Oscillatoria perornata. Steam distillates of the unialgal cultures were continuously extracted with pentane, and the pentane extracts were analyzed by GC-MS. Retention indices and mass spectral data were used to identify 15 components. Relative amounts of individual components were expressed as percent peak area relative to total peak area. The main volatile components were heptadecane (57.0%), 2-methylisoborneol (29.4%), and benzaldehyde (1.2%). Together with the previously known 2-methylisoborneol, which is the major cause of the musty off-flavor problem in catfish farming operations in Mississippi, other components identified were dimethyl disulfide (1.0%), dimethyl trisulfide (0.5%), and benzothiazole (0.6%). These compounds and their organoleptic characteristics are discussed in relation to their possible contributions to cultured catfish off-flavor problems.

show abstract

Characterization of Odorous Compounds in Rotten Blue-green Algae

Cited by 7 publications

References 1 publication

Identification of complex septic odorants in Huangpu River source water by combining the data from gas chromatography-olfactometry and comprehensive two-dimensional gas chromatography using retention indices

Identification of complex septic odorants in Huangpu River source water by combining the data from gas chromatography-olfactometry and comprehensive two-dimensional gas chromatography using retention indices

Simultaneous removal of multiple odorants from source water suffering from septic and musty odors: Verification in a full-scale water treatment plant with ozonation

Volatile Components of the Cyanobacterium Oscillatoria perornata (Skuja)

Contact Info

Product

Resources

About