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1. Correction to: Effect of light and temperature on new cyanobacteria producers for geosmin and 2-methylisoborneol

Author:
Alghanmi, Haider A.; Alkam, Fo’ad M.; AL-Taee, Mysoon M.
Source:
Journal of applied phycology 2019 v.31 no.1 pp. 795
ISSN:
0921-8971
Subject:
2-methylisoborneol,   etc   ; Cyanobacteria; geosmin; temperature;     Show all 4 Subjects
Abstract:
... The original version of this article unfortunately requires correction with respect to the affiliations of some of the authors. ...
DOI:
10.1007/s10811-018-1638-4

2. Synergistic effect of musty odorants on septic odor: Verification in Huangpu River source water

Author:
Guo, Qingyuan; Yu, Jianwei; Su, Ming; Wang, Chunmiao; Yang, Min; Cao, Nan; Zhao, Yu; Xia, Ping
Source:
The Science of the total environment 2019 v.653 pp. 1186-1191
ISSN:
0048-9697
Subject:
2-methylisoborneol,   etc   ; dimethyl disulfide; drinking water; geosmin; odor compounds; odors; rivers; synergism; water pollution;     Show all 9 Subjects
Abstract:
... Revealing the main contributors to septic odor is a challenge since diverse compounds are responsible for this odor, and there might exist synergistic effects among different odorants. In this study, based on a reconstitution evaluation, the contribution of eighteen odorants identified in Huangpu River source water to the septic odor was explored. The reconstitution test result showed that the thr ...
DOI:
10.1016/j.scitotenv.2018.11.062

3. Unexpected impact of 2-methylisoborneol as off-odour substance in aged wines

Author:
Lopez Pinar, Angela; Ghadiriasli, Rahil; Darriet, Philippe; Buettner, Andrea
Source:
Food chemistry 2017 v.220 pp. 498-504
ISSN:
0308-8146
Subject:
2-methylisoborneol,   etc   ; models; off odors; wines; France;     Show all 5 Subjects
Abstract:
... Four Pinot noir wines from Burgundy were investigated by gas chromatography-olfactometry, with regard to the presence of earthy-smelling compounds. 2-Methylisoborneol (2-MIB) was detected in two of these wines, although the samples were seven years old, contradicting previous reports that this substance is unstable in wine and must. In order to investigate this seemingly paradoxical situation, 2-M ...
DOI:
10.1016/j.foodchem.2016.10.021

4. Identification of fishy odor causing compounds produced by Ochromonas sp. and Cryptomonas ovate with gas chromatography-olfactometry and comprehensive two-dimensional gas chromatography

Author:
Guo, Qingyuan; Yu, Jianwei; Zhao, Yunyun; Liu, Tingting; Su, Ming; Jia, Zeyu; Zhao, Yu; Mu, Zhen; Yang, Min
Source:
The Science of the total environment 2019 v.671 pp. 149-156
ISSN:
0048-9697
Subject:
2-methylisoborneol,   etc   ; Cryptomonas; Ochromonas; aldehydes; algae; butyrates; comprehensive two-dimensional gas chromatography; drinking water; fluorenes; geosmin; octenol; odor compounds; odors; olfactometry; synergism; water quality; water utilities;     Show all 17 Subjects
Abstract:
... Disgusting fishy odor problems have become a major concern in drinking water quality, and are commonly related to algal proliferation in source water. Unlike the typical musty/earthy odorants 2-methylisoborneol (MIB) and geosmin, identification of the corresponding fishy odorants is still a big challenge. In this study, two species of fishy-odor-producing algae, Ochromonas sp. and Cryptomonas ovat ...
DOI:
10.1016/j.scitotenv.2019.03.370

5. Occurrence of swampy/septic odor and possible odorants in source and finished drinking water of major cities across China

Author:
Wang, Chunmiao; Yu, Jianwei; Guo, Qingyuan; Sun, Daolin; Su, Ming; An, Wei; Zhang, Yu; Yang, Min
Source:
Environmental pollution 2019 v.249 pp. 305-310
ISSN:
0269-7491
Subject:
2-methylisoborneol,   etc   ; Cyanobacteria; algae; cities; dimethyl disulfide; drinking water; drinking water treatment; geosmin; lakes; odor compounds; odors; rivers; statistical analysis; water quality; water utilities; China;     Show all 16 Subjects
Abstract:
... Swampy/septic odors are one of the most important odor types in drinking water. However, few studies have specifically focused on it compared to the extensive reported musty/earthy odor problems, even though the former is much more offensive. In this study, an investigation covering the odor characteristics, algal distribution and possible odorants contributing to swampy/septic odor, including dim ...
DOI:
10.1016/j.envpol.2019.03.041

6. Oxidation of off flavor compounds in recirculating aquaculture systems using UV-TiO2 photocatalysis

Author:
Rodriguez-Gonzalez, Laura; Pettit, Sandra L.; Zhao, Wen; Michaels, James T.; Kuhn, John N.; Alcantar, Norma A.; Ergas, Sarina J.
Source:
Aquaculture 2019 v.502 pp. 32-39
ISSN:
0044-8486
Subject:
2-methylisoborneol,   etc   ; Cyanobacteria; fish; flavor compounds; geosmin; lipids; odors; off flavors; oxidation; photocatalysis; recirculating aquaculture systems; secondary metabolites; titanium dioxide; wastewater treatment;     Show all 14 Subjects
Abstract:
... Geosmin (GSM) and 2-methylisoborneol (MIB) are secondary metabolites of cyanobacteria that are often present in recirculating aquaculture systems (RAS) and are problematic, even at low (ng L−1) concentrations, due to their taste and odor effects on water and accumulation in the lipid tissue of fish. Removal of these compounds is difficult due to their extremely low concentrations and advanced trea ...
DOI:
10.1016/j.aquaculture.2018.12.022

7. Effect of light and temperature on new cyanobacteria producers for geosmin and 2-methylisoborneol

Author:
Alghanmi, Haider A.; Alkam, Fo’ad M.; AL-Taee, Mysoon M.
Source:
Journal of applied phycology 2018 v.30 no.1 pp. 319-328
ISSN:
0921-8971
Subject:
2-methylisoborneol,   etc   ; Microcoleus vaginatus; Phormidium; death; geosmin; light intensity; odor compounds; photons; taste; temperature;     Show all 10 Subjects
Abstract:
... This study evaluates the effect of light intensity and temperature on the taste and odour compounds of two cyanobacteria species isolated as producers of taste and odour compounds, Phormidium retzii, which produced geosmin and Microcoleus vaginatus, which produced 2-methylisoborneol (2-MIB), both being recorded for the first time as producers of these compounds. The results revealed no relationshi ...
DOI:
10.1007/s10811-017-1233-0

8. Kinetics and mechanism of Pseudoanabaena cell inactivation, 2-MIB release and degradation under exposure of ozone, chlorine and permanganate

Author:
Li, Lei; Zhu, Cuiwen; Xie, Chuanqi; Shao, Chen; Yu, Shuili; Zhao, Laicai; Gao, Naiyun
Source:
Water research 2018 v.147 pp. 422-428
ISSN:
0043-1354
Subject:
2-methylisoborneol,   etc   ; Pseudanabaena; algae; cell membranes; cell viability; chlorine; kinetics; microcystins; off flavors; oxidants; oxidation; ozone; pollutants; potassium permanganate;     Show all 14 Subjects
Abstract:
... The organic pollutants produced by cyanobacteria cells, such as off-flavor compounds (e.g. 2-methylisoborneol, 2-MIB) and hazardous toxins (e.g. microcystins), are commonly detected in water sources. Although studies have shown that oxidation using potassium permanganate (KMnO4), chlorine and ozone helps to remove cyanobacteria cells, the potential effects of these oxidants on cell viability and t ...
DOI:
10.1016/j.watres.2018.10.023

9. Identification of objectionable flavors in purported spontaneous oxidized flavor bovine milk

Author:
Potts, David M.; Peterson, Devin G.
Source:
Journal of dairy science 2018 v.101 no.12 pp. 10877-10885
ISSN:
0022-0302
Subject:
2-methylisoborneol,   etc   ; active ingredients; alpha-terpineol; gas chromatography-mass spectrometry; milk; off flavors; oxidation; taint; United States;     Show all 9 Subjects
Abstract:
... Spontaneous oxidized flavor (SOF) has been reported over the past 5 decades as a sporadic objectionable flavor problem in bovine milk. Parameters previously reported to influence SOF development in milk have been contradictory, limiting the ability to monitor and develop mitigation strategies. The current paper investigates the causative compounds associated with milk identified as SOF milk in the ...
DOI:
10.3168/jds.2018-15045

10. Ozone/peroxide advanced oxidation in combination with biofiltration for taste and odour control and organics removal

Author:
Beniwal, Divyam; Taylor-Edmonds, Liz; Armour, John; Andrews, Robert C.
Source:
Chemosphere 2018 v.212 pp. 272-281
ISSN:
0045-6535
Subject:
2-methylisoborneol,   etc   ; activated carbon; biodegradation; biofiltration; byproducts; disinfection; geosmin; haloacetic acids; hydrogen peroxide; odor control; organic carbon; oxidation; ozone; taste;     Show all 14 Subjects
Abstract:
... The objective of this pilot-scale study was to investigate the effectiveness of incorporating ozone (O3) and advanced oxidation (hydrogen peroxide/ozone: H2O2/O3) in combination with biofiltration for taste and odour control, organic carbon removal, and disinfection byproduct (DBP) precursor reduction. Implementation of O3 and H2O2/O3 with and without biofiltration was investigated at pilot-scale ...
DOI:
10.1016/j.chemosphere.2018.08.015

11. Off-flavor compounds in recirculating aquaculture systems (RAS): Production and removal processes

Author:
Azaria, Snir; van Rijn, Jaap
Source:
Aquacultural engineering 2018 v.83 pp. 57-64
ISSN:
0144-8609
Subject:
2-methylisoborneol,   etc   ; biodegradation; fish; flavor compounds; geosmin; marketing; microorganisms; off flavors; ozonation; prokaryotic cells; recirculating aquaculture systems;     Show all 11 Subjects
Abstract:
... The accumulation of geosmin and 2-methylisoborneol in culture water and fish is a common problem encountered in recirculating aquaculture systems (RAS). In these systems, like in other aquaculture systems, abatement of this problem is usually conducted by purging the fish with clean water prior to their marketing. In indoor RAS, mainly heterotrophic prokaryotes underlie the production of geosmin a ...
DOI:
10.1016/j.aquaeng.2018.09.004

12. Two new Pseudanabaena (Cyanobacteria, Synechococcales) species from Japan, Pseudanabaena cinerea and Pseudanabaena yagii, which produce 2‐methylisoborneol

Author:
Tuji, Akihiro; Niiyama, Yuko
Source:
Phycological research 2018 v.66 no.4 pp. 291-299
ISSN:
1322-0829
Subject:
2-methylisoborneol,   etc   ; Pseudanabaena; Synechococcales; color; granules; internal transcribed spacers; lakes; new taxa; odors; operon; phylogeny; ribosomal RNA; Japan;     Show all 13 Subjects
Abstract:
... Two new Pseudanabaena species, Pseudanabaena cinerea and Pseudanabaena yagii, were described. Both species are members of taxa that produce 2‐methylisoborneol and have a musty odor. P. cinerea was found at the Serikawa reservoir and in Lake Ogawara in Japan. P. cinerea is morphologically similar to P. subfoetida Niiyama et Tuji, but its cell color is different. The cell color of the former is gree ...
DOI:
10.1111/pre.12327

13. Membrane Fouling and Rejection of Organics during Algae-Laden Water Treatment Using Ultrafiltration: A Comparison between in Situ Pretreatment with Fe(II)/Persulfate and Ozone

Author:
Liu, Bin; Qu, Fangshu; Yu, Huarong; Tian, Jiayu; Chen, Wei; Liang, Heng; Li, Guibai; Van der Bruggen, Bart
Source:
Environmental science & technology 2018 v.52 no.2 pp. 765-774
ISSN:
1520-5851
Subject:
2-methylisoborneol,   etc   ; coagulation; dissolved organic carbon; fouling; geosmin; iron; metabolites; microcystin-LR; oxidation; ozonation; ozone; ultrafiltration; water treatment;     Show all 13 Subjects
Abstract:
... In this study, in situ pretreatments with ozone and Fe(II)/persulfate were employed to suppress membrane fouling during the filtration of algae-laden water and to improve the rejection of metabolites. Both ozonation and Fe(II)/persulfate pretreatments negatively impacted the cell integrity, especially ozonation. Fe(II)/persulfate pretreatment improved the removal of dissolved organic carbon and mi ...
DOI:
10.1021/acs.est.7b03819

14. Impact of copper sulphate, potassium permanganate, and hydrogen peroxide on Pseudanabaena galeata cell integrity, release and degradation of 2-methylisoborneol

Author:
Xu, Hangzhou; Brookes, Justin; Hobson, Peter; Pei, Haiyan
Source:
Water research 2019 v.157 pp. 64-73
ISSN:
0043-1354
Subject:
2-methylisoborneol,   etc   ; Microcystis aeruginosa; Pseudanabaena; algicides; cell membranes; cell viability; copper; copper sulfate; drinking water; geosmin; hydrogen peroxide; lakes; off flavors; oxidants; oxidation; potassium permanganate; risk; solar radiation; water treatment; water utilities;     Show all 20 Subjects
Abstract:
... Frequent off-flavor events caused by geosmin and 2-methylisoborneol have caused concern among consumers about the quality of potable water. Pseudanabaena galeata, a filamentous cyanobacterium, is a known producer of 2-methylisoborneol in lakes and reservoirs. The use of algicides to control cyanobacteria must consider the potential release of contaminants into the water. This is the first study to ...
DOI:
10.1016/j.watres.2019.03.082

15. Simultaneous quantification of fifty-one odor-causing compounds in drinking water using gas chromatography-triple quadrupole tandem mass spectrometry

Author:
Wang, Chunmiao; Yu, Jianwei; Guo, Qingyuan; Zhao, Yu; Cao, Nan; Yu, Zhiyong; Yang, Min
Source:
Journal of environmental sciences (China) 2019 v.79 pp. 100-110
ISSN:
1001-0742
Subject:
2-methylisoborneol,   etc   ; aldehydes; benzene; calibration; chemical species; detection limit; dimethyl disulfide; drinking water treatment; esters; ethers; gas chromatography-mass spectrometry; geosmin; heterocyclic compounds; isotope labeling; ketones; liquid-liquid extraction; odor compounds; odors; tandem mass spectrometry; tap water; taste;     Show all 21 Subjects
Abstract:
... A wide range of compounds with various structural features can cause taste and odor (T&O) problems in drinking water. It would be desirable to determine all of these compounds using a simple analytical method. In this paper, a sensitive method combining liquid–liquid extraction (LLE) with gas chromatography-triple quadrupole tandem mass spectrometry (GC–MS/MS) was established to simultaneously ana ...
DOI:
10.1016/j.jes.2018.11.008

16. Effects of dietary protein content on hybrid tilapia (Oreochromis aureus × O. niloticus) performance, common microbial off-flavor compounds, and water quality dynamics in an outdoor biofloc technology production system

Author:
Green, Bartholomew W.; Rawles, Steven D.; Schrader, Kevin K.; Gaylord, T. Gibson; McEntire, Matthew E.
Source:
Aquaculture 2019 v.503 pp. 571-582
ISSN:
0044-8486
Subject:
2-methylisoborneol,   etc   ; Oreochromis aureus; Oreochromis niloticus; biofloc technology; dietary protein; dietary supplements; digestible protein; feed conversion; fingerlings; fish production; geosmin; hybrids; limiting amino acids; lipid content; lipids; markets; nitrification; nitrogen; nutrient retention; off flavors; protein content; tanks; water quality;     Show all 23 Subjects
Abstract:
... Given tilapia grown in the biofloc technology production system can consume the biofloc, it should be possible to optimize formulated diet protein content to account for nutrition derived from consuming biofloc. The present study, conducted in an outdoor biofloc technology production system, evaluated impacts on fish production indices, common microbial off-flavors, and water quality dynamics for ...
Handle:
10113/6290406
DOI:
10.1016/j.aquaculture.2019.01.034

17. Controlling of geosmin and 2‐methylisoborneol induced off‐flavours in recirculating aquaculture system farmed fish—A review

Author:
Lindholm‐Lehto, Petra C.; Vielma, Jouni
Source:
Aquaculture research 2019 v.50 no.1 pp. 9-28
ISSN:
1355-557X
Subject:
2-methylisoborneol,   etc   ; activated carbon; adsorption; analytical methods; byproducts; detection limit; farms; fish; fish meat; freshwater; geosmin; humans; lipophilicity; meat quality; metabolism; odors; off flavors; oxidation; ozonation; production technology; recirculating aquaculture systems; toxicity; zeolites;     Show all 23 Subjects
Abstract:
... Recirculating aquaculture system (RAS) is an increasingly popular alternative to open aquaculture production systems. However, off‐flavours and odours can accumulate in the fish flesh from the circulating water and decrease the fish meat quality. Off‐flavours are typically caused by geosmin (GSM) and 2‐methylisoborneol (MIB) that are lipophilic compounds formed as secondary by‐products of bacteria ...
DOI:
10.1111/are.13881

18. Degradation mechanisms of geosmin and 2-MIB during UV photolysis and UV/chlorine reactions

Author:
Kim, Tae-Kyoung; Moon, Bo-Ram; Kim, Taeyeon; Kim, Moon-Kyung; Zoh, Kyung-Duk
Source:
Chemosphere 2016 v.162 pp. 157-164
ISSN:
0045-6535
Subject:
2-methylisoborneol,   etc   ; chlorination; chlorine; chlorins; chloroform; geosmin; pH; photolysis;     Show all 8 Subjects
Abstract:
... We conducted chlorination, UV photolysis, and UV/chlorin reactions to investigate the intermediate formation and degradation mechanisms of geosmin and 2-methylisoborneol (2-MIB) in water. Chlorination hardly removed geosmin and 2-MIB, while the UV/chlorine reaction at 254 nm completely removed geosmin and 2-MIB within 40 min and 1 h, respectively, with lesser removals of both compounds during UV p ...
DOI:
10.1016/j.chemosphere.2016.07.079

19. Micro-milling of spent granular activated carbon for its possible reuse as an adsorbent: Remaining capacity and characteristics

Author:
Pan, Long; Takagi, Yuichi; Matsui, Yoshihiko; Matsushita, Taku; Shirasaki, Nobutaka
Source:
Water research 2017 v.114 pp. 50-58
ISSN:
0043-1354
Subject:
2-methylisoborneol,   etc   ; activated carbon; adsorbents; adsorption; hydrophobicity; iodine value; molecular weight; particle size; water treatment;     Show all 9 Subjects
Abstract:
... We milled granular activated carbons (GACs) that had been used for 0–9 years in water treatment plants and produced carbon particles with different sizes and ages: powdered activated carbons (PAC, median diameter 12–42 μm), superfine PAC (SPAC, 0.9–3.5 μm), and submicron-sized SPAC (SSPAC, 220–290 nm). The fact that SPAC produced from 1-year-old GAC and SSPAC from 2-year-old GAC removed 2-methylis ...
DOI:
10.1016/j.watres.2017.02.028

20. Prediction of the adsorption capacities for four typical organic pollutants on activated carbons in natural waters

Author:
Bunmahotama, Warisa; Hung, Wei-Nung; Lin, Tsair-Fuh
Source:
Water research 2017 v.111 pp. 28-40
ISSN:
0043-1354
Subject:
2-methylisoborneol,   etc   ; activated carbon; adsorbents; adsorption; atrazine; equations; models; pollutants; porosity; prediction; sorption isotherms; water utilities;     Show all 12 Subjects
Abstract:
... A new model is developed to predict the competitive adsorption isotherms of atrazine, methyl tertiary butyl ether (MTBE), 2-methylisoborneol (2-MIB) and 2,4,6-trichlorophenol onto activated carbons (ACs) in natural water. Based on the Polanyi-Dubinin (PD) equation, with the limiting pore volume of adsorbent estimated from the pore size distribution data, and the Ideal adsorbed solution theory - eq ...
DOI:
10.1016/j.watres.2016.12.033