Table 3.

Assigned peaks from the FTIR Spectra of the Metabolite Produced by the Bacillus proteolyticus.

Run	Peak	Trans.	Assignment
1	3582.74	86.21	O–H stretching vibration
2	3122.40	25.73	C–H symmetric stretching vibration of the connection of the in CH2 group
3	2598.51	36.05	C–H stretching vibration, of aliphatic Alkane
4	2496.73	57.11	O–H stretching vibration
5	2296.43	80.26	CH3 group stretching vibrations
6	1750.64	84.37	C=O stretching vibration of a carbonyl bond
7	1398.41	85.72	CH3 symmetric bending vibrations
8	1200.08	72.14	C–O–C asymmetric stretching vibration
9	1126.28	81.92	C–O–C and C–C–O Stretching vibration due to the accumulation of polyester compounds (poly-3-hydroxybutyrate and probably phospholipids (PLs))
10	1000.73	52.17	C–O–C and C–C–O Stretching vibration due to the accumulation of polyester compounds (poly-3-hydroxybutyrate and probably phospholipids (PLs))
11	984.15	20.00	C–C–O stretching vibration
12	862.40	64.38	C–O Stretching vibration
13	800.24	84.49	CH bending vibration
14	700.06	76.82	Rocking CH2 mode due to the accumulation of polyesters
15	550.31	92.71	C–Cl C–Br, I Stretching vibrations

Trans. represent transmittance (%). Peak is cm⁻¹