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Table 1 Lipid (%, measured using the Bligh and Dyer method), carbohydrate (%, measured using anthrone reagent and glucose as standard), protein (%, measured using Bradford method and bovine serum albumin as standard), total phenolic content (TPC, expressed as gallic acid equivalent (mg/g GAE)) and total flavonoids content (TFC, expressed as quercetin (mg/g)) of microalgae crude extracts (MCEs)

From: Phytochemical screening, metabolite profiling and enhanced antimicrobial activities of microalgal crude extracts in co-application with silver nanoparticle

Microalgae species Lipid (%) Total carbohydrate (%) Total protein (%) TPC, mg/g Gallic acid equivalent (GAE) TFC, mg/g Querecetin equivalent (QE)
Methanol Chloroform Hexane Ethanol Water Methanol Chloroform Hexane Ethanol Water
N. oculata 23.7 a ± 0.99 17 a ± 0.01 9.6 a ± 0.05 58.1 a ± 0.042 24.5 b ± 0.01 7.1 c ± 0.01 13.6 d ± 0.01 5.8 e ± 0.06 44.83 a ± 0.04 22.5 b ± 0.002 14.7 c ± 0.02 10.9 d ± 0.001 5.9 e ± 0.001
T. suecica 15.9 b ± 0.76 16.9 a ± 0.01 8.7 b ± 0.06 44.3 a ± 0.032 17.0 b ± 0.01 0.8 c ± 0.001 15.2 d ± 0.001 7.1 e ± 0.06 97.67 a ± 0.07 25.7 b ± 0.003 1.0 c ± 0.001 15.5 d ± 0.01 9.9 e ± 0.02
Chlorella sp. 30.38 c ± 0.92 15.5 b ± 0.01 6.9 c ± 0.07 35.7 a ± 0.031 59.4 b ± 0.02 0.7 c ± 0.01 17.4 d ± 0.001 5.9 e ± 0.06 55.84 a ± 0.062 39.1 b ± 0.004 13.8 c ± 0.06 17.3 d ± 0.001 2.2 e ± 0.02
  1. Values are expressed as mean ± standard deviation, n = 3; TPC total phenolic content, TFC total flavonoid content
  2. For lipids, carbohydrate and protein, for each column, different letters indicate significantly different (p < 0.05)
  3. For TPC and TFC, a–e values in the same line sharing different letters are significantly different (p < 0.05)