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. 2021 Jul 5;10(7):1077. doi: 10.3390/antiox10071077

Table 3.

Amino acids detected in raw and LABs fermented brown rice.

S. No Sample Name Retention Time (Min) Peak Area Adduct/
Charge		 Precursor Mass Found at Mass Formula Finder Result Amino Acid
1 Raw BR 1.00 1.52 × 103 [M + H]+ 156.077 156.077 C6H9N3O2 Histidine
L. plantarum FBR 1.00 7.31 × 105 [M + H]+ 156.077 156.077
L. fermentum FBR 1.02 6.33 × 105 [M + H]+ 156.077 156.0771
L. reuteri FBR 1.02 7.45 × 105 [M + H]+ 156.077 156.0771
2 Raw BR ND ND [M − H]− ND ND C6H14N2O2 Lysine
L. plantarum FBR 1.02 9.16 × 105 [M − H]− 145.099 145.0982
L. fermentum FBR 1.02 2.17 × 105 [M − H]− 145.099 145.0984
L. reuteri FBR 1.02 1.40 × 106 [M − H]− 145.099 145.0983
3 Raw BR ND ND [M + H]+ ND ND C5H11NO3S
 Methionine
L. plantarum FBR 1.17 5.66 × 105 [M + H]+ 166.053 166.0536
L. fermentum FBR 1.17 5.33 × 105 [M + H]+ 166.053 166.0537
L. reuteri FBR 1.18 8.41 × 105 [M + H]+ 166.053 166.0536
4 Raw BR 1.17 2.56 × 102 [M − H]− 146.047 146.0457 C5H9NO4 Glutamic acid
L. plantarum FBR 1.47 3.18 × 105 [M − H]− 146.047 146.046
L. fermentum FBR 1.47 4.58 × 104 [M − H]− 146.047 146.046
L. reuteri FBR 1.47 2.65 × 106 [M − H]− 146.047 146.0458
5 Raw BR ND ND [M + H]− ND ND C4H9NO2 Gamma-aminobutyric acid
L. plantarum FBR 1.16 1.38 × 105 [M − H]− 102.057 102.056
L. fermentum FBR 1.16 2.76 × 104 [M − H]− 102.057 102.0563
L. reuteri FBR 1.16 1.28 × 106 [M − H]− 102.057 102.0561
6 Raw BR ND ND [M + H]+ ND ND C6H14N4O2 Arginine
L. plantarum FBR 1.11 2.81 × 106 [M + H]+ 175.118 175.1183
L. fermentum FBR 1.14 9.09 × 105 [M + H]+ 175.118 175.1194
L. reuteri FBR 1.11 4.99 × 106 [M + H]+ 175.118 175.1184
7 Raw BR ND ND [M − H]− ND ND C5H11NO2 Valine
L. plantarum FBR 1.49 6.15 × 105 [M − H]− 116.073 116.0717
L. fermentum FBR 1.50 1.37 × 105 [M − H]− 116.073 116.0718
L. reuteri FBR 1.45 7.61 × 105 [M − H]− 116.073 116.0719
8 Raw BR 1.14 1.19 × 103 [M − H]− 132.031 132.0307 C4H7NO4 Aspartic acid
L. plantarum FBR 1.15 7.26 × 104 [M − H]− 132.031 132.0303
L. fermentum FBR 1.15 8.76 × 103 [M − H]− 132.031 132.0305
L. reuteri FBR 1.12 4.89 × 105 [M − H]− 132.031 132.0302
9 Raw BR ND ND [M − H]− ND ND C9H11NO2 Phenylalanine
L. plantarum FBR 4.01 2.26 × 106 [M − H]− 164.072 164.0718
L. fermentum FBR 4.03 3.50 × 105 [M − H]− 164.072 164.072
L. reuteri FBR 3.98 7.21 × 106 [M − H]− 164.072 164.0718
10 Raw BR ND ND [M − H]− ND ND C5H12N2O2 Ornithine
L. plantarum FBR 1.01 1.53 × 105 [M − H]− 131.084 131.0827
L. fermentum FBR 1.01 6.67 × 104 [M − H]− 131.084 131.0828
L. reuteri FBR 1.01 5.35 × 105 [M − H]− 131.084 131.0827
11 Raw BR 1.12 3.31 × 102 [M − H]− 104.036 104.0353 C3H7NO3 Serine
L. plantarum FBR 1.12 3.06 × 105 [M − H]− 104.036 104.0353
L. fermentum FBR 1.13 4.70 × 104 [M − H]− 104.036 104.0356
L. reuteri FBR 1.12 5.73 × 105 [M − H]− 104.036 104.0353
12 Raw BR ND ND [M − H]− ND ND C6H13NO2 Leucine
L. plantarum FBR 2.46 1.95 × 106 [M − H]− 130.088 130.0874
L. fermentum FBR 2.48 3.24 × 105 [M − H]− 130.088 130.0875
L. reuteri FBR 2.41 6.63 × 106 [M − H]− 130.088 130.0875
13 Raw BR ND ND [M − H]− ND ND C5H10N2O3 Glutamine
L. plantarum FBR ND ND [M − H]− ND ND
L. fermentum FBR ND ND [M − H]− ND ND
L. reuteri FBR 1.10 1.62 × 104 [M − H]− 145.063 145.0619
14 Raw BR ND ND [M − H]− ND ND C9H11NO3 Tyrosine
L. plantarum FBR 1.98 3.38 × 105 [M − H]− 180.068 180.0667
L. fermentum FBR ND ND [M − H]− ND ND
L. reuteri FBR 1.89 4.08 × 105 [M − H]− 180.068 180.0667
15 Raw BR ND ND [M − H]− ND ND C4H9NO3 Threonine
L. plantarum FBR ND ND [M − H]− ND ND
L. fermentum FBR ND ND [M − H]− ND ND
L. reuteri FBR 1.14 1.14 × 105 [M − H]− 118.052 118.051
16 Raw BR ND ND [M − H]− ND ND C4H8N2O3 Asparagine
L. plantarum FBR 1.10 6.8 × 104 [M − H]− 131.047 131.0462
L. fermentum FBR 1.13 3.41 × 104 [M − H]− 131.047 131.0464
L. reuteri FBR 1.13 3.01 × 105 [M − H]− 131.047 131.0461
17 Raw BR ND ND [M − H]− ND ND C11H12N2O2 Tryptophan
L. plantarum FBR 7.64 6.19 × 105 [M − H]− 203.084 203.0829
L. fermentum FBR 7.66 7.77 × 104 [M − H]− 203.084 203.0832
L. reuteri FBR 7.61 2.78 × 106 [M − H]− 203.084 203.0829
18 Raw BR ND ND [M + H]+ ND ND C5H9NO2 Proline
L. plantarum FBR ND ND [M + H]+ ND ND
L. fermentum FBR ND ND [M + H]+ ND ND
L. reuteri FBR 0.86 7.90 × 105 [M +H]+ 116.07 116.0704

ND—not detected, BR—brown rice, and FBR—fermented brown rice.