## 3 Results and Discussion
### Effect of LED Light Treatments on Phytosterols  
Phytosterols are known to decrease plasma cholesterol, mainly atherogenic low-density lipoprotein cholesterol. Campesterol and \(\beta\)-sitosterol were the main phytosterols in mature white and red cabbage [53; 55]. The results of phytosterols from white and red cabbage microgreens grown under three LED lights are presented in Table 8.  
\begin{table}
\begin{tabular}{c c c c c} \hline \hline \multirow{2}{*}{**Microgreens**} & \multirow{2}{*}{**Antioxidant Potential Assay**} & \multicolumn{3}{c}{**Light Treatments**} \\ \cline{3-5}  & & **White** & **White + Red** & **White + Blue** \\ \hline \multirow{4}{*}{White cabbage} & ABTS & 25.47 \(\pm\) 0.59 a & 27.57 \(\pm\) 0.55 a & 47.72 \(\pm\) 1.03 b \\ \cline{2-5}  & DPPH & 28.64 \(\pm\) 0.36 a & 27.82 \(\pm\) 0.47 a & 44.19 \(\pm\) 0.21 b \\ \cline{2-5}  & ORAC & 191.23 \(\pm\) 4.36 a & 192.69 \(\pm\) 0.40 a & 293.12 \(\pm\) 12.52 b \\ \cline{2-5}  & FRAP & 33.20 \(\pm\) 0.58 a & 43.84 \(\pm\) 0.38 b & 80.67 \(\pm\) 2.14 c \\ \hline \multirow{4}{*}{Red cabbage} & ABTS & 43.56 \(\pm\) 1.20 a & 77.10 \(\pm\) 0.89 b & 100.12 \(\pm\) 1.38 c \\ \cline{2-5}  & DPPH & 39.75 \(\pm\) 0.56 a & 55.87 \(\pm\) 1.11 b & 67.96 \(\pm\) 1.55 c \\ \cline{2-5}  & ORAC & 280.44 \(\pm\) 4.73 a & 406.19 \(\pm\) 3.19 b & 457.28 \(\pm\) 20.04 c \\ \cline{2-5}  & FRAP & 74.45 \(\pm\) 1.01 a & 100.01 \(\pm\) 2.91 b & 122.56 \(\pm\) 2.12 c \\ \hline \hline \end{tabular}  
*–Trolox equivalent. Values are expressed as mean \(\pm\) SD (\(n=3\)); different letters in the row denote a statistical difference at \(p<0.05\).  
\end{table}
Table 7: Antioxidant potential (\(\mu\)M TE* g–1 DW) of white and red cabbage microgreens grown under different LED light treatments.  
\begin{table}
\begin{tabular}{c c c c} \hline \hline \multirow{2}{*}{**Microgreens**} & \multirow{2}{*}{**Light Treatments**} & \multirow{2}{*}{\(\beta\)**-Sitosterolol**} & \multirow{2}{*}{**Campesterol**} \\ \cline{3-3}  & White & 343 \(\pm\) 17 b & 0 \\ White cabbage & White + red & 493 \(\pm\) 21 c & 298 \(\pm\) 8 \\ White + blue & 123 \(\pm\) 8 a & 0 \\ \hline \multirow{3}{*}{Red cabbage} & White & 169 \(\pm\) 7 a & 0 \\ White + red & 448 \(\pm\) 41 b & 244 \(\pm\) 12 \\ White + blue & 203 \(\pm\) 12 a & 0 \\ \hline \hline \end{tabular}  
* Values are expressed as mean \(\pm\) SD (\(n=3\)); different letters in the column denote a statistical difference at \(p<0.05\).  
\end{table}
Table 8: Content of \(\beta\)-sitosterol and campesterol (\(\mu\)g 100 g–1 DW) of white and red cabbage microgreens under different LED light treatments.  
\(\beta\)-Sitosterol was present in all analyzed microgreens, and campesterol was identified only in both types of microgreens growing under white light with the addition of red light. Moreover, microgreens growing under this light treatment were characterized by the highest content of \(\beta\)-sitosterol. White light supplementation with blue light resulted in a 2.8-fold decrease in \(\beta\)-sitosterol content in white cabbage microgreens and an increase in its level by 20% in red cabbage microgreens. Likewise, mature white and red cabbage contained much more \(\beta\)-sitosterol than campesterol [53]. To the best of our knowledge, there are no previous studies on the phytosterol composition of white and red cabbage microgreens.