The Influence of pH of Extracting Water on the Composition of Seaweed Extracts and Their Beneficial Properties on Lepidium sativum

Table 1

Multielemental composition of the obtained algal extracts (): comparison with literature data.

Element

Baltic seaweeds, (mg/kg dry weight)

EpH3

EpH7

EpH10

EpH3·H2O

EpH7·H2O

EpH10·H2O

Extract obtained by boiling in water

Extract obtained by soaking in water

Extract obtained by MAE 25°C

Extract obtained by MAE 40°C

Extract obtained by MAE 60°C

Godlewska et al., 2016

Present work

Godlewska et al., 2016

Michalak et al., 2015

mg/L

Macroelements

Ca

40292 ± 8058

1553 ± 311

275 ± 41

160 ± 24

266 ± 40

305 ± 46

285 ± 43

333 ± 50

410 ± 61

354 ± 53

363 ± 54

365 ± 54

K

5082 ± 1016

1068 ± 214

1236 ± 247

2264 ± 453

1069 ± 214

1027 ± 205

1023 ± 205

969 ± 145

978 ± 147

868 ± 130

901 ± 135

951 ± 142

Mg

3181 ± 636

606 ± 91

277 ± 42

140 ± 21

285 ± 43

308 ± 46

291 ± 44

300 ± 45

357 ± 54

303 ± 45

311 ± 46

322 ± 48

Na

6354 ± 1271

1418 ± 284

1190 ± 238

1123 ± 225

1168 ± 234

1286 ± 257

1237 ± 248

1239 ± 248

1302 ± 260

1050 ± 211

1200 ± 240

1250 ± 250

P

1155 ± 231

4422 ± 884

33.660 ± 5.049

161 ± 24

27.290 ± 4.094

35.96 ± 5.39

34.7 ± 5.2

5.22 ± 0.78

9.52 ± 1.43

18.3 ± 2.7

32.9 ± 4.9

S

8614 ± 1723

541 ± 81

541 ± 81

596 ± 89

492 ± 74

547 ± 82

523 ± 79

670 ± 100

599 ± 90

562 ± 84

582 ± 87

702 ± 105

Microelements

B

97.83 ± 14.68

17.78 ± 2.67

1.57 ± 0.24

0.380 ± 0.057

3.69 ± 0.55

2.86 ± 0.43

2.70 ± 0.41

6.50 ± 0.97

2.62 ± 0.39

3.3 ± 0.5

3.44 ± 0.51

4.74 ± 0.71

Cu

12.69 ± 1.90

0.07 ± 0.02

0.230 ± 0.035

0.27 ± 0.04

0.0300 ± 0.0075

0.310 ± 0.047

0.100 ± 0.015

0.140 ± 0.021

0.020 ± 0.005

0.1170 ± 0.0117

0.148 ± 0.022

0.108 ± 0.016

Fe

6660 ± 1332

26.99 ± 4.05

11.45 ± 1.72

19.48 ± 2.92

3.94 ± 0.59

6.11 ± 0.92

6.820 ± 1.023

2.53 ± 0.38

17.6 ± 2.6

1.19 ± 0.18

2.17 ± 0.28

4.47 ± 0.70

Mn

232 ± 35

14.60 ± 2.19

1.73 ± 0.26

0.78 ± 0.12

2.060 ± 0.309

2.32 ± 0.35

2.11 ± 0.32

2.43 ± 0.36

3.71 ± 0.56

2.52 ± 0.37

2.62 ± 0.39

3.07 ± 0.46

Mo

0.312 ± 0.047

0.003 ± 0.001

0.010 ± 0.003

0.0300 ± 0.0075

0.0100 ± 0.0025

0.0100 ± 0.0025

0.0100 ± 0.0025

0.020 ± 0.005

0.000

0.001 ± 0.000

0.179 ± 0.026

0.0108 ± 0.0027

Si

906.90 ± 136.04

27.05 ± 4.06

14.43 ± 2.17

16.54 ± 2.48

6.19 ± 0.93

9.64 ± 1.45

10.84 ± 1.63

9.10 ± 1.36

9.73 ± 1.46

3.10 ± 0.46

6.69 ± 1.00

11.9 ± 1.8

Zn

64.94 ± 9.74

3.41 ± 0.51

0.270 ± 0.041

0.54 ± 0.08

0.140 ± 0.021

0.210 ± 0.032

0.170 ± 0.026

0.240 ± 0.036

0.100 ± 0.015

0.0746 ± 0.0112

0.20 ± 0.03

0.169 ± 0.025

Toxic metals

As

3.902 ± 0.507

0.26 ± 0.04

0.150 ± 0.023

0.180 ± 0.027

0.170 ± 0.026

0.150 ± 0.023

0.140 ± 0.021

0.170 ± 0.022

0.160 ± 0.021

0.246 ± 0.032

0.150 ± 0.019

0.198 ± 0.025

Cd

0.7067 ± 0.0919

0.010 ± 0.003

<LLD

<LLD

<LLD

<LLD

<LLD

<LLD

<LLD

<LLD

0.001 ± 0.000

0.001 ± 0.000

Pb

7.028 ± 0.914

0.030 ± 0.008

0.0300 ± 0.0075

0.0300 ± 0.0075

0.0100 ± 0.0025

0.020 ± 0.005

0.020 ± 0.005

0.040 ± 0.008

0.0100 ± 0.0025

0.0098 ± 0.0020

0.0104 ± 0.0021

0.032 ± 0.006

<LLD: below detection limit.