Journal of Food Quality

Research Article

Effects of Fungi-Mediated Solid-State Fermentation on Phenolic Contents and Antioxidant Activity of Brown and White Teff (Eragrostis tef (Zucc.) Trotter) Grains

Table 2

Characterization of major compounds identified in soluble and bound fractions.


Peak no.	t_R (min)	Tentative assignment	m/z		Mass error (ppm)	Molecular formula	MS/MS fragment ions
Peak no.	t_R (min)	Tentative assignment	Anion	Cation	Mass error (ppm)	Molecular formula	Anion	Cation

1	3.67	Kaempferol-3-gentiobioside	609.1461	611.1603	0.00	C₂₇H₃₀O₁₆	367.0614, 369.0612, 591.1341	329.0653, 353.0653, 299.0547
2	3.73	Kaempferol-3-O-rutinosyl-7-O-β-D-glucoside	755.2043	757.2187	0.40	C₃₃H₄₀O₂₀	447.0930, 328.0544, 259.0614	395.0705. 431.0969, 757.2177
3	3.98	3,8-Di-C-glucosylapigenin	593.1512	595.1655	−0.30	C₂₇H₃₀O₁₅	311.0562, 283,0659, 341.0666	—
4	4.02	Genistein-7,4′-di-O-β-D-glucoside	—	595.1655	−1.00	C₂₇H₃₀O₁₅	—	283.0599, 313.0704, 379.0808
5	4.04	Grosvenorine	—	741.2239	0.30	C₃₃H₄₀O₁₉	—	283.0599, 313.0704, 595.1651
6	4.24	Populnin	447.0934	449.1079	0.20	C₂₁H₂₀O₁₁	327.0511, 299.0552, 133.0295	299.2550, 329.0655, 271.0598
7	4.49	Viscumneoside VII	—	791.2040	4.50	C₃₄H₄₀O₂₀	—	287.0550, 329.0656, 3921.0809
8	4.51	Genistin	431.0982	433.1127	−0.40	C₂₁H₂₀O₁₀	311.0652, 283.0611, 161.0246	313.0734, 283.0599, 337.0708
9	4.66	Carthamin	909.2082	—	−1.40	C₄₃H₄₂O₂₂	759.1779, 327.0508, 357.0619	—
10	4.80	Smiglaside D	965.2743	—	2.30	C₄₇H₅₀O₂₂	311.0565, 773.1930, 473.,1088	—
11	4.85	Sophorabioside	577.1559	579.1707	−0.20	C₂₇H₃₀O₁₄	269.0455, 577.1557, 473.1086	271.0598, 433.1104, 153.0177
12	4.98	Apigenin-7-O-(6″-syringyl) arabinosyl-8-C-glucoside	—	745.1981	−0.20	C₂₆H₂₈O₁₄	—	313.0735, 293.0605, 151.0419
13	5.07	Luteolin-3-O-(6″-O-acetyl)-β-D-glucoside	489.1038	491.1183	−0.20	C₂₃H₂₃O₁₁	327.0511, 431.0975, 268.0373	277.0591, 329.0653, 353.0655
14	5.42	Apigenin-7-O-β-D-glucuronide ethyl ester	473.1088	475.1232	−0.20	C₂₃H₂₂O₁₁	311.0563, 283.0611, 413.0875	283.0598, 313.0704, 271.0599
15	5.65	Pinnatifinoside I	515.1192	—	−0.60	C₂₁H₁₈O₉	455.0978, 311.0563,283.0603	—
16	4.48	5,7,3′,4′-Tetramethoxyflavone	387.1084	—	−0.30	C₁₉H₁₈O₆	193.0508, 134.0375, 343.1179	—
17	4.67	7-Methoxycoumarin	—	177.0543	−1.70	C₁₀H₈O₃	—	177.0543, 145.0218
18	4.83	5,7,3′,4′-Tetramethoxyflavone	387.1080	—	−1.30	C₁₉H₁₈O₆	134.0370, 295.0607, 266.0585	—
19	5.59	6-Aldehydo-isoophio-pogonone B	385.0927	—	−0.50	C₁₉H₁₄O₇	281.0816, 267.0653, 235.0756	—
20	5.93	(−) Sclerodin	—	351.0856	4.80	C₁₈H₁₆O₆	—	279.0643, 323.0904, 192.0563

Anion: [M − H]⁻ or [M − HCOO]⁻; cation: [M + H]⁺or [M + Na]⁺.