Synchrotron FTIR Light Reveals Signal Changes of Biofunctionalized Magnetic Nanoparticle Attachment on Salmonella sp.

Table 1

Matrix table to track signal changes of 4-stage magnetic nanoparticles for culture-independent detection of Salmonella sp.

Vibration modes	Stage 0; Salmonella sp.	GA	Stage I; FMNs	Stage II; FMNs+GA	Stage III; FMNs+GA+Ab	Stage IV; FMNs+GA+Ab+Salmonella sp.
O-H asymmetric and symmetric stretching	—	—	3293	3356	—	—
C-H asymmetric and symmetric stretching vibration	2876	2872	2881	2858	2851	2851
C=O stretching in aldehydes	—	1772	—	1778	—	—
N-H bending of NH2 group (scissoring)	—	—	1673	—	—	—
C=N stretching	—	—	—	1654	—	—
C=O stretching vibration of amide I	1649	—	—	—	1652	1649
C-N stretching and N-H bending vibration of amide II	1582	—	—	—	1547	1542
CH2 scissoring	1451	1460	—	—	—	1454
C=O symmetric stretching of COO^- group in amino acid, fatty acids	1406	—	—	—	—	1414
Aldehydic C-H bending vibration	—	—	—	1366	—	—
C-N stretching and N-H bending vibration of amide III	—	—	—	—	1244	—
P=O asymmetric stretching of phosphodiester in phospholipids	1238	—	—	—	—	1235
C-N stretching	—	—	1090	1077	—	—