Bactericidal and Cytotoxic Activities of Polyphenol Extracts from Solanum tuberosum spp. tuberosum and spp. andigena Cultivars on Escherichia coli and Human Neuroblastoma SH-SY5Y Cells In Vitro
Table 1
Phenolic acid and anthocyanidin content in skin and flesh of tubers of the four selected potato cultivars.
Compound
Cultivar
Moradita
Waicha
Santa María
Summerside
Skin
Flesh
R
Skin
Flesh
R
Skin
Flesh
R
Skin
Flesh
R
5-CGA
970.85 ± 51.00
(69.3)
63.15 ± 6.65
(94.2)
15.4
184.10 ± 23.16
(26.3)
55.70 ± 11.90
(18.3)
3.3
1145.25 ± 46.60
(72.8)
877.30 ± 47.15
(87.0)
1.3
304.55 ± 49.95
(78.9)
26.30 ± 3.35
(55.2)
11.6
4-CGA
212.25 ± 9.65
(15.1)
ND
—
—
261.45 ± 1.55
(37.3)
153.75 ± 2.40
(50.6)
1.7
248.30 ± 65.35
(15.8)
101.05 ± 15.60
(10.0)
2.5
42.55 ± 8.00
(11.0)
13.10 ± 0.70
(27.5)
3.2
3-CGA
97.25 ± 0.45
(6.9)
ND
—
—
201.55 ± 1.55
(28.8)
91.65 ± 1.65
(30.1)
2.2
134.70 ± 36.35
(8.6)
23.50 ± 8.10
(2.3)
5.7
22.10 ± 6.75
(5.7)
6.85 ± 0.20
(14.4)
3.2
CA
91.35 ± 6.70
(6.5)
0.85 ± 0.15
(1.3)
107.5
39.05 ± 13.10
(5.6)
3.10 ± 1.70
(1.0)
12.6
32.55 ± 4.65
(2.1)
4.45 ± 2.70
(0.4)
7.3
15.95 ± 1.70
(4.1)
0.50 ± 0.30
(1.0)
31.9
FA
30.30 ± 6.80
(2.2)
3.00 ± 0.40
(4.5)
10.1
14.20 ± 3.80
(2.0)
ND
—
—
11.50 ± 3.95
(0.7)
2.55 ± 0.40
(0.3)
4.5
1.25 ± 0.35
(0.3)
0.90 ± 0.25
(1.9)
1.4
Total
1402.05 ± 74.70
(74.4)
67.00 ± 7.35
(100)
21.3
700.35 ± 43.15
(67.2)
304.20 ± 17.65
(100)
2.3
1572.30 ± 156.90
(63.0)
1008.85 ± 73.95
(61.3)
1.6
386.40 ± 66.75
(100)
47.65 ± 4.80
(100)
8.1
phenolic acids
Cyanidin
1.50 ± 0.65
(0.3)
ND
—
—
5.85 ± 1.65
(1.7)
ND
—
—
1.25 ± 0.40
(0.1)
5.10 ± 2.40
(0.8)
0.2
ND
—
ND
—
—
Petunidin
440.65 ± 10.30
(91.2)
ND
—
—
ND
—
ND
—
—
ND
—
ND
—
—
ND
—
ND
—
—
Pelargonidin
ND
—
ND
—
—
267.55 ± 1.15
(78.1)
ND
—
—
781.95 ± 49.15
(84.7)
494.20 ± 50.65
(77.5)
1.6
ND
—
ND
—
—
Peonidin
21.10 ± 2.60
(4.4)
ND
—
—
51.30 ± 2.50
(15.0)
ND
—
—
127.00 ± 13.35
(13.7)
126.40 ± 47.00
(19.8)
1.0
ND
—
ND
—
—
Malvidin
20.10 ± 7.80
(4.1)
ND
—
—
17.90 ± 2.25
(5.2)
ND
—
—
13.80 ± 8.25
(1.5)
12.30 ± 2.05
(1.9)
1.1
ND
—
ND
—
—
Total
483.35 ± 21.25
(25.6)
0
—
—
342.55 ± 3.60
(32.8)
0
—
—
923.95 ± 71.10
(37.0)
638.05 ± 102.15
(38.7)
1.4
0
—
0
—
—
anthocyanidins
Note. Metabolite levels were determined by HPLC-DAD and expressed as µg/g DW ± SD from at least three independent extractions. Numbers in parentheses indicate the % of each compound(s) with respect to the corresponding total. R: skin-to-flesh ratio; ND: not detected.
