Chemical Assessment and Antimicrobial and Antioxidant Activities of Endophytic Fungi Extracts Isolated from Costus spiralis (Jacq.) Roscoe (Costaceae)
Table 6
Total phenol content and antioxidant activities by DPPH (CE50) and FRAP from hydroethanolic crude extracts and organic subfractions from endophytic fungi.
Code
Endophytic species
Average of total phenolic compounds concentrations (gTAE/mg)
FRAP assay (M Fe2SO4/mg) crude extract
FRAP assay (M Fe2SO4/mg) organic subfraction
DPPH assay IC50 (g/mL) crude extract
DPPH assay IC50 (g/mL) organic subfraction
CEP1
Phomopsis sp.
4.20 d
364.86 ± 2.38
481.6 ± 1.23
660.34 ± 2.71
456.76 ± 1.13
CEDp2
Diaporthe phaseolorum
3.71 d
290.43 ± 1.21
NC
1136.91 ± 5.7
NC
CED3
Diaporthe sp.
3.49 d
233.71 ± 0.23
NC
1375.96 ± 2.01
NC
CED4
Diaporthe sp.
3.65 d
173.46 ± 0.34
NC
1309.00 ± 1.23
NC
CEP4
Phomopsis sp.
3.58 d
120.05 ± 0.10
NC
1425.16 ± 2.10
NC
CE6
Not identified
4.89 c
445.29 ± 0.98
547.14 ± 1.09
452.01 ± 0.14
213.56 ± 1.23
CED7
Diaporthe sp.
3.68 d
120.25 ± 1.90
NC
1765.30 ± 0.76
NC
CES8
Sordariomycetes sp.
3.65 d
143.89 ± 0.43
NC
1235.34 ± 2.10
NC
CE9
Not identified
3.55 d
200.14 ± 0.87
NC
1014.75 ± 2.34
NC
CEP10
Phomopsis sp.
3.71 d
133.74 ± 0.29
NC
1802.26 ± 1.23
NC
CEDp11
Diaporthe phaseolorum
5.67 b
294.96 ± 1.09
437.2 ± 0.98
659.42 ± 0.76
423.86 ± 0.76
CEC12
Cochliobolus ssp.
5.28 bc
471.15 ± 2.87
543.5 ± 0.58
378.01 ± 0.87
189.78 ± 1.23
CES13
Sordariomycetes sp.
7.10 a
413.01 ± 1.76
523.6 ± 1.23
628.49 ± 1.56
399.98 ± 0.14
CECn
0.06 e
NA
NC
NA
NC
AA
—
—
—
6.41
6.41
CE50 = concentration able to reduce in 50% the DPPH radical; averages followed by the same letter are not significantly different (Tukey’s test, ); values average ± standard deviation, ; NA = not active; NC: not conducted; CECn = crude extract control negative; AA = ascorbic acid; TAE = tannic acid equivalent.
