Abstract
The effects of different salt concentrations on the growth, aroma and quality parameters of P. tricornutum and S. platensis were investigated for the first time.Salt contents were 15, 25, 30 and 35‰ for the P. tricornutum and 20, 25, 30 and 35‰ for the S. platensis culture. Aroma compounds were analyzed by HS-SPME-GC/MS while the organic acid and sugar composition were studied by HPLC-PDA-RID.The main amino acids were glutamic acid (6.24-12.96mg/100g) and alanine (3.67-13.65mg/100g) while the prevailing sugars were sucrose (229-1099mg/100g) and glucose (192-2322mg/100g) in the P. tricornutum and S. platensis samples.The most prevailing aroma compound was acetic acid (113µg/kg) in the P. tricornutum samples and heptadecane (36941µg/kg) in the S. platensis samples.A significant reduction was found in the amount of aroma compounds, amino acids, sugars and organic acids with increasing salt concentration.The study results are valuable for producing high-quality and flavorful P. tricornutum and S. platensis products.
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