. 2021 Oct 20;9(2):e01531-21. doi: 10.1128/Spectrum.01531-21

TABLE 1.

Molecular characteristics of DOM for S. dohrnii without antibiotics in different growth phases

Growth phase	No. of molecules of:			Total no. of molecules	% of molecules of:			Mass_a^a	H/C_a^b	O/C_a^c	No. of DBE_a^d	C/N_a^e	C/S_a^f	No. (%) of^g:
Growth phase	CHO	CHON	CHOS	Total no. of molecules	CHO	CHON	CHOS	Mass_a^a	H/C_a^b	O/C_a^c	No. of DBE_a^d	C/N_a^e	C/S_a^f	0.5 < AI_mod < 0.67	AI_mod > 0.67
Initial	145	8	6	159	91.19	5.03	3.78	307.45	1.49	0.33	5.18	12.86	14	0 (0)	0 (0)
Exponential	272	127	20	419	64.91	30.31	4.78	352.67	1.43	0.37	6.52	10.69	15.95	3 (0.72)	0 (0)
Stationary	540	311	40	891	60.61	34.90	4.49	367.31	1.41	0.39	6.89	10.23	15.08	13 (1.46)	0 (0)
Degradation	572	408	41	1,021	56.02	39.96	4.02	388.18	1.39	0.36	7.55	13.58	16.19	28 (2.74)	4 (0.39)

Mass_a, average molecular weight.

H/C_a, average hydrogen to carbon ratio.

O/C_a, average oxygen to carbon ratio.

DBE_a, average double bond equivalents.

C/N_a, average carbon to nitrogen ratio.

C/S_a, average carbon to sulfur ratio.

AI_mod, modified aromaticity index; 0.5 < AI_mod < 0.67, aromatic compounds; AI_mod > 0.67, polycyclic aromatic compounds.