title: Characterization of typical taste and odor compounds formed by Microcystis aeruginosa.
abstract: Production and characteristics of typical taste and odor (T&O) compounds by Microcystis aeruginosa were investigated. A few terpenoid chemicals, including 2-MIB, beta-cyclocitral, and beta-ionone, and a few sulfur compounds, such as dimethyl sulfide and dimethyl trisulfide, were detected. beta-Cyclocitral and beta-carotene concentrations were observed to be relevant to the growth phases of Microcystis. During the stable growth phase, 41-865 fg/cell of beta-cyclocitral were found in the laboratory culture. beta-Cyclocitral concentrations correlated closely with beta-carotene concentrations, with the correlation coefficient R2 = 0.96, as it is formed from the cleavage reaction of beta-carotene. For dead cell cases, a high concentration of dimethyl trisulfide was detected at 3.48-6.37 fg/cell. Four T&O compounds, including beta-cyclocitral, beta-ionone, heptanal and dimethyl trisulfide, were tested and found to be able to inhibit and damage Microcystis cells to varying degrees. Among these chemicals, beta-cyclocitral has the strongest ability to quickly rupture cells.
authors: College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China. zhangkj@zju.edu.cn
authors: Kejia
authors: K
authors: Zhang
authors: Department of Environmental Engineering, National Cheng Kung University, Tainan 70101, Taiwan, China.
authors: Tsair Fuh
authors: TF
authors: Lin
authors: College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China.
authors: Tuqiao
authors: T
authors: Zhang
authors: College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China.
authors: Cong
authors: C
authors: Li
authors: State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China.
authors: Naiyun
authors: N
authors: Gao
mesh_terms: D008401:Gas Chromatography-Mass Spectrometry; D046931:Microcystis / Q000378:metabolism*; D009812:Odorants; D052617:Solid Phase Microextraction; D013649:Taste