# Production of Sustainable Postbiotics from Sugarcane Straw for Potential Food Applications
## 3 Results and Discussion
### Phenolic Compounds Profile
\begin{table}
\begin{tabular}{l c c c c c} \hline \hline
**Proposed Name** & **Formula-H** & **m/z Theoretical Mass** & **m/z Measured Mass** & **Error** & **MS/MS Fragments** \\  & & [**M** \(-\) H]\({}^{-}\) & [**M** \(-\) H]\({}^{-}\) & **(ppm)** & **(m/z)** \\ \hline \multicolumn{6}{c}{**Hydroybenzoic acids**} \\ \hline Protocatechuic acid & C\({}_{7}\)H\({}_{9}\)O\({}_{4}\) & 153.0184 & 153.0193 & 3.3 & 109, 153 \\
2.5-Dihydroxybenzoic acid isomer 1 & C\({}_{7}\)H\({}_{9}\)O\({}_{4}\) & 153.0184 & 153.0193 & 3.2 & 109, 153 \\
2.5-Dihydroxybenzoic acid isomer 2 & C\({}_{7}\)H\({}_{9}\)O\({}_{4}\) & 153.0181 & 153.0193 & 3.3 & 65, 109 \\
4-Hydroxybenzoic acid & C\({}_{7}\)H\({}_{9}\)O\({}_{3}\) & 137.0235 & 137.0244 & 4.6 & 137 \\
3,4-Dihydroxybenzaldehyde & C\({}_{7}\)H\({}_{9}\)O\({}_{3}\) & 137.0233 & 137.0244 & 4.5 & 93, 137 \\
4-Hydroxybenzaldehyde & C\({}_{7}\)H\({}_{9}\)O\({}_{2}\) & 121.0285 & 121.0295 & 3.0 & 121 \\ \hline \multicolumn{6}{c}{**Hydroycinamic acids**} \\ \hline
5-O-Feruloylquinic acid & C\({}_{7}\)H\({}_{9}\)O\({}_{9}\) & 367.1021 & 367.1035 & 3.8 & 134, 193 \\ trans-3-Feruloylquinic acid & C\({}_{17}\)H\({}_{9}\)O\({}_{9}\) & 367.1023 & 367.1030 & 3.5 & 173 \\ Ferulic acid & C\({}_{10}\)H\({}_{9}\)O\({}_{4}\) & 193.0391 & 193.0506 & 4.3 & 134, 161, 193 \\ p-Coumaric acid & C\({}_{6}\)H\({}_{7}\)O\({}_{3}\) & 163.0401 & 163.0401 & \(-\)1.0 & 119 \\ \hline \multicolumn{6}{c}{**Flavonoids**} \\ \hline Isotivein2\({}^{\circ}\)-O-arabinoside & C\({}_{8}\)H\({}_{9}\)O\({}_{14}\) & 563.1401 & 563.1406 & 1.9 & 353, 443 \\ Luteolin8-C-glucoside isomer 1 & C\({}_{21}\)H\({}_{9}\)O\({}_{11}\) & 447.0920 & 447.0933 & 2.9 & 327, 357 \\ Luteolin8-C-glucose isomer 2 & C\({}_{21}\)H\({}_{9}\)O\({}_{11}\) & 447.0920 & 447.0933 & 2.9 & 327, 357 \\ Tricin-O-nebesperoside isomer 1 & C\({}_{29}\)H\({}_{9}\)O\({}_{16}\) & 637.1772 & 637.1774 & \(-\)3.9 & 329 \\ Tricin-O-nebesperoside isomer 2 & C\({}_{85}\)H\({}_{9}\)O\({}_{16}\) & 637.1775 & 637.1638 & \(-\)0.1 & 329 \\ Tricin-7-O-glucose & C\({}_{85}\)H\({}_{9}\)O\({}_{10}\) & 491.1919 & 491.1823 & 0.7 & 329 \\ Tricin-7-O-Phammosyl-glucuron & C\({}_{85}\)H\({}_{9}\)O\({}_{17}\) & 651.1570 & 651.1567 & \(-\)0.4 & 329 \\ \hline \multicolumn{6}{c}{**Flavonoids**} \\ \hline Isotivein2\({}^{\circ}\)-O-arabinoside & C\({}_{85}\)H\({}_{9}\)O\({}_{14}\) & 563.1401 & 563.1406 & 1.9 & 353, 443 \\ Luteolin8-C-glucoside isomer 1 & C\({}_{21}\)H\({}_{9}\)O\({}_{11}\) & 447.0920 & 447.0933 & 2.9 & 327, 357 \\ Luteolin8-C-glucose isomer 2 & C\({}_{21}\)H\({}_{9}\)O\({}_{11}\) & 447.0920 & 447.0933 & 2.9 & 327, 357 \\ Tricin-O-nebesperoside isomer 1 & C\({}_{29}\)H\({}_{9}\)O\({}_{016}\) & 637.1772 & 637.1774 & \(-\)3.9 & 329 \\ Tricin-O-nebesperoside isomer 2 & C\({}_{85}\)H\({}_{9}\)O\({}_{16}\) & 637.1775 & 637.1638 & \(-\)0.1 & 329 \\ Tricin-7-O-glucose & C\({}_{85}\)H\({}_{9}\)O\({}_{10}\) & 491.1919 & 491.1823 & 0.7 & 329 \\ Tricin-7-O-Phammosyl-glucuron & C\({}_{85}\)H\({}_{9}\)O\({}_{17}\) & 651.1570 & 651.1567 & \(-\)0.4 & 329 \\ \hline \hline \end{tabular} Formula-H is the molecular formula without a proton (H\({}^{+}\)). \(m/z\) theoretical mass [M \(-\) H]\({}^{-}\) is the monoisotopic peak for a given molecular formula. \(m/z\) measured mass [M \(-\) H]\({}^{-}\) is the experimentally determined mass of an ion measured. Error (ppm) is the difference in parts per million between theoretical and measured data. MS/MS fragments are the fragments of the mass found.  
\end{table} 
Table 2: LC-ESI-UHR-QqTOF-MS data of phenolic compounds identified in straw extract after saccharification.