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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