期刊
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
卷 67, 期 14, 页码 3879-3889出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jafc.8b06840
关键词
Isochrysis galbana; microalgae; NMR spectroscopy; multivariate data analysis; metabolic profile
资金
- National R+D+i Plan Project of the Spanish Ministry of Science, Innovation and Universities [CTQ2017-84334-R]
- Junta de Andalucia project [P12-FQM-2668]
NMR spectroscopy coupled with multivariate data analysis techniques was applied to obtain meaningful information about nontargeted metabolic changes on Isochrysis galbana upon acclimation to different environmental conditions at indoor lab-scale. The effects of temperature (from 15 to 30 degrees C) and incident irradiance (from 250 to 1600 mu mol m(-2) s(-1)) at a constant dilution rate of 0.3 h(-1) were evaluated. High irradiances stimulated a decrease of chlorophyll a, fucoxanthin and amino acids content, and the conversion of polar fatty acids (PLs, GLs, DGDGs, SGDGs) to neutral fatty acids (saturated and unsaturated). High temperatures together with high irradiances decreased PUFAs concentration, including omega-3 fatty acids. Under low irradiance and temperature organic osmolytes (homarine, DMSP, GBT, and glycerol), and sugars (glucose, trehalose, and galactose) were also reduced.
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