Undesirable odour substances (geosmin and 2-methylisoborneol) in water environment: Sources, impacts and removal strategies

Mohamed E. Abd El-Hack; Mohamed T. El-Saadony; Ahmed R. Elbestawy; Hany F. Ellakany; Samar S. Abaza; Amr M. Geneedy; Heba M. Salem; Ayman E. Taha; Ayman A. Swelum; Fatima A. Omer; Synan F. AbuQamar; Khaled A. El-Tarabily

doi:10.1016/j.marpolbul.2022.113579

Undesirable odour substances (geosmin and 2-methylisoborneol) in water environment: Sources, impacts and removal strategies

Mohamed E. Abd El-Hack, Mohamed T. El-Saadony, Ahmed R. Elbestawy, Hany F. Ellakany, Samar S. Abaza, Amr M. Geneedy, Heba M. Salem, Ayman E. Taha, Ayman A. Swelum, Fatima A. Omer, Synan F. AbuQamar, Khaled A. El-Tarabily

Department of Biology

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Off-flavours in fish products generated from recirculating aquaculture systems (RAS) are a major problem in the fish farming industry affecting the market demand and prices. A particular concern is the muddy or musty odour and taste in fish due to the presence of secondary metabolites geosmin and 2-methylisoborneol (2-MIB), produced by actinobacteria (mainly Streptomyces), myxobacteria and cyanobacteria. Off-flavours have deteriorated the quality of fish, rendering their products unfit for human consumption. The process of odour removal requires purification for several days to weeks in clean water; thus this leads to additional production costs. Geosmin and 2-MIB, detected at extremely low odour thresholds, are the most widespread off-flavour metabolites in aquaculture, entering through fish gills and accumulating in the fish adipose tissues. In this review, we aimed to determine the diversity and identity of geosmin- and 2-MIB-producing bacteria in aquaculture and provide possible strategies for their elimination.

Original language	English
Article number	113579
Journal	Marine Pollution Bulletin
Volume	178
DOIs	https://doi.org/10.1016/j.marpolbul.2022.113579
Publication status	Published - May 2022

Keywords

2-methylisoborneol
Actinobacteria
Aquaculture system
Fish quality
Geosmin
Off-flavour
Water pollution

ASJC Scopus subject areas

Oceanography
Aquatic Science
Pollution

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10.1016/j.marpolbul.2022.113579

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Abd El-Hack, M. E., El-Saadony, M. T., Elbestawy, A. R., Ellakany, H. F., Abaza, S. S., Geneedy, A. M., Salem, H. M., Taha, A. E., Swelum, A. A., Omer, F. A., AbuQamar, S. F., & El-Tarabily, K. A. (2022). Undesirable odour substances (geosmin and 2-methylisoborneol) in water environment: Sources, impacts and removal strategies. Marine Pollution Bulletin, 178, [113579]. https://doi.org/10.1016/j.marpolbul.2022.113579

Abd El-Hack, ME, El-Saadony, MT, Elbestawy, AR, Ellakany, HF, Abaza, SS, Geneedy, AM, Salem, HM, Taha, AE, Swelum, AA, Omer, FA, AbuQamar, SF & El-Tarabily, KA 2022, 'Undesirable odour substances (geosmin and 2-methylisoborneol) in water environment: Sources, impacts and removal strategies', Marine Pollution Bulletin, vol. 178, 113579. https://doi.org/10.1016/j.marpolbul.2022.113579

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title = "Undesirable odour substances (geosmin and 2-methylisoborneol) in water environment: Sources, impacts and removal strategies",

abstract = "Off-flavours in fish products generated from recirculating aquaculture systems (RAS) are a major problem in the fish farming industry affecting the market demand and prices. A particular concern is the muddy or musty odour and taste in fish due to the presence of secondary metabolites geosmin and 2-methylisoborneol (2-MIB), produced by actinobacteria (mainly Streptomyces), myxobacteria and cyanobacteria. Off-flavours have deteriorated the quality of fish, rendering their products unfit for human consumption. The process of odour removal requires purification for several days to weeks in clean water; thus this leads to additional production costs. Geosmin and 2-MIB, detected at extremely low odour thresholds, are the most widespread off-flavour metabolites in aquaculture, entering through fish gills and accumulating in the fish adipose tissues. In this review, we aimed to determine the diversity and identity of geosmin- and 2-MIB-producing bacteria in aquaculture and provide possible strategies for their elimination.",

keywords = "2-methylisoborneol, Actinobacteria, Aquaculture system, Fish quality, Geosmin, Off-flavour, Water pollution",

author = "{Abd El-Hack}, {Mohamed E.} and El-Saadony, {Mohamed T.} and Elbestawy, {Ahmed R.} and Ellakany, {Hany F.} and Abaza, {Samar S.} and Geneedy, {Amr M.} and Salem, {Heba M.} and Taha, {Ayman E.} and Swelum, {Ayman A.} and Omer, {Fatima A.} and AbuQamar, {Synan F.} and El-Tarabily, {Khaled A.}",

note = "Funding Information: Authors thank their respective institutions for their support. K.A. El-Tarabily would also like to thank the library at Murdoch University, Australia, for the valuable online resources and comprehensive databases. Not applicable. Not applicable. Not applicable. This work received no funds. Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

year = "2022",

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doi = "10.1016/j.marpolbul.2022.113579",

language = "English",

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journal = "Marine Pollution Bulletin",

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T1 - Undesirable odour substances (geosmin and 2-methylisoborneol) in water environment

T2 - Sources, impacts and removal strategies

AU - Abd El-Hack, Mohamed E.

AU - El-Saadony, Mohamed T.

AU - Elbestawy, Ahmed R.

AU - Ellakany, Hany F.

AU - Abaza, Samar S.

AU - Geneedy, Amr M.

AU - Salem, Heba M.

AU - Taha, Ayman E.

AU - Swelum, Ayman A.

AU - Omer, Fatima A.

AU - AbuQamar, Synan F.

AU - El-Tarabily, Khaled A.

N1 - Funding Information: Authors thank their respective institutions for their support. K.A. El-Tarabily would also like to thank the library at Murdoch University, Australia, for the valuable online resources and comprehensive databases. Not applicable. Not applicable. Not applicable. This work received no funds. Publisher Copyright: © 2022 Elsevier Ltd

PY - 2022/5

Y1 - 2022/5

N2 - Off-flavours in fish products generated from recirculating aquaculture systems (RAS) are a major problem in the fish farming industry affecting the market demand and prices. A particular concern is the muddy or musty odour and taste in fish due to the presence of secondary metabolites geosmin and 2-methylisoborneol (2-MIB), produced by actinobacteria (mainly Streptomyces), myxobacteria and cyanobacteria. Off-flavours have deteriorated the quality of fish, rendering their products unfit for human consumption. The process of odour removal requires purification for several days to weeks in clean water; thus this leads to additional production costs. Geosmin and 2-MIB, detected at extremely low odour thresholds, are the most widespread off-flavour metabolites in aquaculture, entering through fish gills and accumulating in the fish adipose tissues. In this review, we aimed to determine the diversity and identity of geosmin- and 2-MIB-producing bacteria in aquaculture and provide possible strategies for their elimination.

AB - Off-flavours in fish products generated from recirculating aquaculture systems (RAS) are a major problem in the fish farming industry affecting the market demand and prices. A particular concern is the muddy or musty odour and taste in fish due to the presence of secondary metabolites geosmin and 2-methylisoborneol (2-MIB), produced by actinobacteria (mainly Streptomyces), myxobacteria and cyanobacteria. Off-flavours have deteriorated the quality of fish, rendering their products unfit for human consumption. The process of odour removal requires purification for several days to weeks in clean water; thus this leads to additional production costs. Geosmin and 2-MIB, detected at extremely low odour thresholds, are the most widespread off-flavour metabolites in aquaculture, entering through fish gills and accumulating in the fish adipose tissues. In this review, we aimed to determine the diversity and identity of geosmin- and 2-MIB-producing bacteria in aquaculture and provide possible strategies for their elimination.

KW - 2-methylisoborneol

KW - Actinobacteria

KW - Aquaculture system

KW - Fish quality

KW - Geosmin

KW - Off-flavour

KW - Water pollution

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ER -

Undesirable odour substances (geosmin and 2-methylisoborneol) in water environment: Sources, impacts and removal strategies

Abstract

Keywords

ASJC Scopus subject areas

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