## 3 Results
### Antibacterial Activity of Mango By-Products
#### 3.2.2 Staphylococcus
In extracts obtained with process B, the Keit cultivar presented the lowest MICs in the bacteria of Group I, while in Group II, three bacterial species (_S. aureus_, _S. colnii_ and _S. lugdunensis_) showed the opposite effect. In seed extracts, the MICs of eight bacterial species showed no differences between cultivars; however, in _S. alettea_, _S. aquorum_ and _S. gallinarum_, the MICs of the extracts of the cultivar Keitt were lower. Furthermore, no significant correlation was observed between the phenolic compounds and the MIC values of the _Staphylococcus_ species tested, with the exception of _S. colnii_ subsp. _colnii_. In this case, a significant (\(p<0.05\)) positive correlation was found between MICs values and the concentration (\(g/100\) g dw) of gallates gallotannins (Table 2). \begin{table}
\begin{tabular}{c c c c c c c c c c c} \hline \hline  & & & & \multicolumn{3}{c}{**Peel Extracts**} & \multicolumn{3}{c}{**Seed Extracts**} \\ \cline{3-10} _Staphylococcus Species_ & & & & \multicolumn{3}{c}{**(mg GAE/mL)**} & & \multicolumn{3}{c}{**(mg GAE/mL)**} \\ \cline{3-10}  & & & **GPA** & **SPA** & **KPA** & **GPB** & **SPB** & **KPB** & **GSC** & **SSC** & **KSC** \\ \hline \multirow{10}{*}{_S. a. arlettea_} & MIC & 5 & 5 & 5 & 5 & 5 & 1 & 5 & 5 & 1 \\ \cline{2-10}  & NRRL B-14764 & MBC & 5 & 5 & 5 & 5 & 5 & 1 & 5 & 5 & 5 \\ \cline{2-10}  & _S. aquorum_ & MIC & 5 & 5 & 5 & 5 & 5 & 1 & 5 & 5 & 1 \\ \cline{2-10}  & NRRL B-14765 & MBC & 5 & 5 & 5 & 5 & 5 & 1 & 5 & 5 & 5 \\ \cline{2-10}  & _S. carrosus_ & MIC & 5 & 5 & 5 & 5 & 1 & 5 & 5 & 5 \\ \cline{2-10}  & NRRL B-14760 & MBC & 10 & 10 & 10 & 10 & 5 & 10 & 10 & 5 \\ \cline{2-10}  & _[PERSON]. [PERSON]_ & MIC & 5 & 5 & 5 & 5 & 5 & 1 & 5 & 5 & 5 \\ \cline{2-10}  & NRRL B-14776 & MBC & nd & nd & nd & nd & nd & nd & nd & nd \\ \cline{2-10}  & _[PERSON]. [PERSON]_ & MIC & 5 & 5 & 5 & 5 & 5 & 1 & 5 & 5 & 5 \\ \cline{2-10}  & NRRL B-14767 & MBC & 30 & 15 & 15 & 30 & 15 & 15 & 120 & 120 & 120 \\ \cline{2-10}  & _[PERSON]. [PERSON]_ & MIC & 5 & 5 & 5 & 5 & 5 & 5 & 5 & 5 & 5 \\ \cline{2-10}  & NRRL B-14759 & MBC & 5 & 10 & 10 & 5 & 10 & 5 & 10 & 10 & 5 \\ \hline \multirow{10}{*}{_S. a. simliarum_} & MIC & 10 & 10 & 5 & 10 & 10 & 5 & 10 & 10 & 5 \\ \cline{2-10}  & NRRL B-14763 & MBC & 30 & 15 & 10 & 15 & 15 & 10 & 240 & 240 & 240 \\ \cline{2-10}  & _[PERSON]_ & MIC & 10 & 10 & 10 & 10 & 10 & 10 & 10 & 10 & 10 \\ \cline{2-10}  & NRRL B-767 & MBC & nd & nd & nd & nd & nd & nd & nd & nd & nd \\ \cline{2-10}  & _[PERSON]_ & MIC & 30 & 10 & 30 & 30 & 10 & 120 & 10 & 10 & 10 \\ \cline{2-10}  & _[PERSON]_ & MIC & 60 & 15 & 60 & 60 & 15 & 240 & 30 & 15 & 15 \\ \cline{2-10}  & _S. ochini_ & MIC & 15 & 15 & 10 & 15 & 15 & 60 & 5 & 5 & 5 \\ \cline{2-10}  & NRRL B-14756 & MBC & nd & nd & nd & nd & nd & nd & nd & nd \\ \cline{2-10}  & _S. lugdunensis_ & MIC & 30 & 60 & 30 & 120 & 120 & 240 & 60 & 60 & 60 \\ \cline{2-10}  & 99705-65 & MBC & 120 & \(>\)240 & 120 & 240 & 240 & \(>\)240 & 120 & 120 & 120 \\ \hline \hline \end{tabular}
\end{table} 
Table 3: The minimum inhibitory and bactericidal concentrations (MICs and MBCs) of mango peel and seed extracts against different _Staphylococcus_ species.