## 4 Conclusions  
All the studied green tea samples presented high antioxidant activities as well as high values of TP and TF. Additionally, the total ECD contents presented significantly higher values that ranged from 89% to 93% of the total catechins. Thus, Azorean _C. sinensis_ green tea, as a natural nutraceutical product, could have a beneficial impact on human health.  
The RSADPPH and FRAP presented, in general, better results in 2020 when compared to 2019, showing higher values in the summer months (July and August) of both years. The FIC activity exhibited the highest value in August 2019 while, in 2020, the best value was observed in May.  
The TP presented, in general, slightly higher values in 2019 compared to 2020, showing the highest values in summer (July and August) and the lowest value in April. For TF, higher values were observed in the spring months of 2019, with the same pattern observed in 2020, except for August, which presented the second-highest value.  
The ECDs exhibited higher values in 2020 with respect to 2019 in all months, and the same pattern was observed for total esterified catechins and EGCG. Conversely, the other esterified catechins, ECG and GCG, exhibited higher values in 2019 compared to 2020. The individual ECD contents of the studied samples decreased as follows: EGCG > ECG \(\gg\) EC \(\gg\) EGC, which was consistent with their high antioxidant activities.  
This study revealed the significant influence of the harvest year on phenolic profiles and the antioxidant capacity of Azorean _C. sinensis_ green tea. However, future studies are required in order to better understand the impact of single and synergistic effects of environmental factors on the observed variability.  
[PERSON] and [PERSON] wrote the manuscript. [PERSON], [PERSON] ([PERSON]) and [PERSON] ([PERSON]) contributed to the research aspects carried out by the authors. All authors reviewed the manuscript. All authors have read and agreed to the published version of the manuscript.  
This study was supported by PO Acores 2020 and by the Community Structural Funds FEDER and FSE for the 2014-2020 programming period, with implementation in the Azores Region, under the project \"ACORES-01-0247-FEDER-000014\".  
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline  & \multicolumn{4}{c}{**(A)**} \\ \hline  & \(\mathbf{RSA_{DPPH}}\) & **FIC Activity** & **TP** & **TF** & **EST CAT** \\ \hline RSADPPH & 1 & - & - & - & - \\ FIC activity & 0.743 & 1 & - & - & - \\ TP & 0.881 & 0.452 & 1 & - & - \\ TF & \(-\)0.922 & \(-\)0.440 & \(-\)0.884 & 1 & - \\ EST CAT & 0.871 & 0.692 & 0.577 & \(-\)0.819 & 1 \\ \hline  & \multicolumn{4}{c}{**(B)**} \\ \hline  & \(\mathbf{RSA_{DPPH}}\) & **FIC Activity** & **TP** & **TF** & **EST CAT** \\ \hline RSADPPH & 1 & - & - & - & - \\ FIC activity & \(-\)0.781 & 1 & - & - & - \\ TP & 0.951 & \(-\)0.576 & 1 & - & - \\ TF & \(-\)0.271 & \(-\)0.131 & \(-\)0.500 & 1 & - \\ EST CAT & 0.911 & \(-\)0.503 & 0.925 & \(-\)0.383 & 1 \\ \hline RSADPPH radical scavenging activity; FIC—ferrous ion-chelting; TT—total phenolics; IT—total flavonoids; EST CAT—esterified catechins (epigallocatechin-3-gallate, epicatechin-3-gallate, and gallocatechin-3-gallate). & & & \\ \hline \hline \end{tabular}
\end{table}
Table 4: Correlation matrix of the studied parameters in Azorean _Camellia sinensis_ (L.) [PERSON] green tea samples from 2019 (A) and 2020 (B) (Pearson correlation coefficients).