Table 1 Concentration of C-based chemical bonds observed by XPS measurements.

From: Extending shelf life: cold plasma as a tool to preserve long-term germination potential of pea seeds

 

C–C/C–H

C–N/C–O

C= O/O–C–O

COO

O/C ratio

C–X/C–C

REF

80.0

13.3

3.8

3.0

0.18

0.25

5 s

60.3

26.2

8.2

5.4

0.30

0.66

30 s

57.2

24.6

9.5

8.7

0.44

0.75

60 s

64.9

22.5

7.0

5.5

0.31

0.54

  1. The relative percentage of chemical bonds observed from high-resolution C1s spectra of reference pea seeds compared to plasma-treated pea seeds at 5, 30 and 60 s.
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