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Table 3 Phenolic profiles of Tunisian thermophilic Leptolyngbya sp: BME, CME and RME (in mg/g DW)

From: Therapeutic properties in Tunisian hot springs: first evidence of phenolic compounds in the cyanobacterium Leptolyngbya sp. biomass, capsular polysaccharides and releasing polysaccharides

  BME CME RME
Gallic 14.2 ± 0.1a 0.4 ± 0.02b 0.3 ± 0.01c
Hydroxytyrosol 4.0 ± 0.1a 0.1 ± 0.02b 0.1 ± 0.02b
Protocatechuic 0.5 ± 0.1c 1.3 ± 0.01a 1.1 ± 0.03b
Vanillic 6.0 ± 0.02a 0.8 ± 0.03b 0.5 ± 0.02c
Isovanillic 0.2 ± 0.01 nd nd
3-hydroxybenzoic 1.1 ± 0.1a nd 0.1 ± 0.02b
4-Hydroxybenzoic 0.5 ± 0.02a 0.1 ± 0.01b 0.1 ± 0.01b
Catechol nd 0.1 ± 0.01a 0.1 ± 0.01a
Resorcinol 0.6 ± 0.01a 0.3 ± 0.01c 0.4 ± 0.02b
Naphtoresorcinol 1.4 ± 0.01a 0.6 ± 0.01c 0.8 ± 0.02b
Syringic 1.7 ± 0.1 nd nd
Oleuropein 2.0 ± 0.1a 0.2 ± 0.01b 0.2 ± 0.01b
Ʃ HBA 32.2 ± 0.05a 3.9 ± 0.02b 3.7 ± 0.02c
Chlorogenic 0.1 ± 0.01 nd nd
P coumaric 1.1 ± 0.1a 0.6 ± 0.01b 0.5 ± 0.02c
M coumaric 0.8 ± 0.02a 0.2 ± 0.01c 0.3 ± 0.01b
Ferulic 9.3 ± 0.03a 0.1 ± 0.01c 0,2 ± 0.02b
Rosameric 0.7 ± 0.01a 0.6 ± 0.01b 0.4 ± 0.02c
Ʃ HCA 12 ± 0.03a 1.5 ± 0.01b 1.4 ± 0.02c
Catechin 2.6 ± 0.2a nd 0.1 ± 0.02b
Luteolin 7 glucoside 4.5 ± 0.03a 0.4 ± 0.01b 0.3 ± 0.02c
Apigenin 0.4 ± 0.02a 0.2 ± 0.01b 0.2 ± 0.01b
Apigenin 7 glucoside 0.4 ± 0.01b 0.5 ± 0.02a 0.5 ± 0.02a
Naringenin 4.1 ± 0.01a 1.2 ± 0.2b 1.0 ± 0.1c
Luteolin 0.2 ± 0.01b 0.4 ± 0.01a 0.2 ± 0.01b
Flavon 0.7 ± 0.02b 0.9 ± 0.02a 0.5 ± 0.03c
Ʃ Flavonoids 12.9 ± 0.07a 3.6 ± 0.04b 2.8 ± 0.03c
Resveratrol 0.2 ± 0.01c 0.4 ± 0.01a 0.3 ± 0.02b
Pinoresinol 1.3 ± 0.01b 2.2 ± 0.1a 0.5 ± 0.02c
Ʃ Phenolic 58.6 ± 0.03a 11.6 ± 0.04b 8.7 ± 0.02c
  1. Values are means ± SD (n = 3): means in the same rows representing different letters are significantly different (p < 0.05); HBA: Hydroxybenzoic acids; HCA: Hydroxycinnamic acids; “nd” = not detected