## 3 Results and Discussion
### Volatile Compound Profile of Non-Fermented and Fermented Apple Juice and Cider Samples
\begin{table}
\begin{tabular}{c c c c c c c c c c} \hline \hline  & & & \multicolumn{6}{c}{**Frozen Apple Juice**} & \multicolumn{6}{c}{**Fresh Apple Juice**} \\ \cline{3-10}  & & & \multicolumn{6}{c}{**Lactic Acid Bacteria Strain Used for Fermentation**} \\ \cline{3-10} RT, min & \multirow{2}{*}{**Volatile Compound, \% from the Total Volatile Compounds**} & \multicolumn{2}{c}{**LUHS122**} & \multicolumn{2}{c}{**LUHS210**} & \multicolumn{2}{c}{**LUHS122**} & \multicolumn{2}{c}{**LUHS210**} \\ \cline{3-10}  & & & \multicolumn{6}{c}{**Duration of Fermentation, h**} \\ \cline{3-10}  & & **24** & **48** & **24** & **48** & **24** & **48** & **24** & **48** \\ \hline
2.471 & Ethyl acetate & nd & nd & nd & nd & nd & 2.83 \(\pm\) 0.26 & 2.38 \(\pm\) 0.21 & nd \\
3.05 & 1-butanol & 3.58 \(\pm\) 0.21 & **4.50**\(\pm\) 0.29 & 5.59 \(\pm\) 0.39 & 4.99 \(\pm\) 0.36 & 1.30 \(\pm\) 0.11 & 1.47 \(\pm\) 0.12 & 1.57 \(\pm\) 0.14 & 1.90 \(\pm\) 0.17 \\
4.373 & 3-methylbutan-1-ol & 0.884 \(\pm\) 0.041 & **0.620**\(\pm\) 0.005 & 2.36 \(\pm\) 0.21 & 1.87 \(\pm\) 0.14 & 1.73 \(\pm\) 0.16 & 4.07 \(\pm\) 0.25 & 8.33 \(\pm\) 0.25 & 10.3 \(\pm\) 0.1 \\
5.861 & Ethyl butyrate & 1.04 \(\pm\) 0.03 & **0.811**\(\pm\) 0.41 & nd & nd & nd & 1.816 \(\pm\) 0.045 & 1.06 \(\pm\) 0.09 & & 0.1 \\
6.21 & Acetic acid, butyl ester & 1.16 \(\pm\) 0.2 & **10.6**\(\pm\) 0.1 & 1.80 \(\pm\) 0.16 & 1.78 \(\pm\) 0.16 & 9.17 \(\pm\) 0.08 & 1.97 \(\pm\) 0.14 & 0.991 \(\pm\) 0.028 & 1.10 \(\pm\) 0.11 \\
7.594 & 1-Hexanoic acid & 36.4 \(\pm\) 0.3 & **40.5**\(\pm\) 0.3 & 4.91 \(\pm\) 0.3 & 44.8 \(\pm\) 0.3 & 33.1 \(\pm\) 0.3 & 38.7 \(\pm\) 0.3 & 36.9 \(\pm\) 0.2 & 40.2 \(\pm\) 0.4 \\
10.492 & Hexanoic acid & 0.913 \(\pm\) 0.099 & **1.07**\(\pm\) 0.09 & 1.25 \(\pm\) 0.11 & 1.11 \(\pm\) 0.09 & 1.05 \(\pm\) 0.07 & 1.48 \(\pm\) 0.11 & 1.44 \(\pm\) 0.11 & 1.67 \(\pm\) 0.14 \\
10.947 & Buryl JUntonate & 2.48 \(\pm\) 0.23 & **2.20**\(\pm\) 0.21 & 0.903 \(\pm\) 0.060 & 0.999 \(\pm\) 0.037 & 2.52 \(\pm\) 0.23 & 1.44 \(\pm\) 0.12 & 0.514 \(\pm\) 0.048 & nd \\
11.022 & Hexanoic acid, ethyl ester & nd & nd & nd & nd & nd & nd & 1.45 \(\pm\) 0.13 & 1.69 \(\pm\) 0.15 \\
11.402 & Acetic acid, butyl ester & 8.41 \(\pm\) 0.34 & **5.54**\(\pm\) 0.36 & 3.18 \(\pm\) 0.15 & 2.98 \(\pm\) 0.23 & 6.38 \(\pm\) 0.41 & 3.94 \(\pm\) 0.32 & 2.72 \(\pm\) 0.23 & 3.07 \(\pm\) 0.29 \\
11.775 & 2 ethyl-Hexanol & 0.663 \(\pm\) 0.041 & **0.599**\(\pm\) 0.41 & 0.871 \(\pm\) 0.036 & 9.41 \(\pm\) 0.34 & 8.15 \(\pm\) 0.39 & 8.88 \(\pm\) 0.51 & 8.13 \(\pm\) 0.31 & 8.87 \(\pm\) 0.42 \\
12.803 & 1-Octanol & 4.30 \(\pm\) 0.31 & **4.07**\(\pm\) 0.29 & 3.98 \(\pm\) 0.27 & 4.09 \(\pm\) 0.36 & 3.24 \(\pm\) 0.26 & 2.67 \(\pm\) 0.19 & 1.23 \(\pm\) 0.10 & 1.40 \(\pm\) 0.12 \\
13.65 & _cis_-12-Cyclohexanedmethanol & 0.726 \(\pm\) 0.028 & **0.709**\(\pm\) 0.035 & 0.951 \(\pm\) 0.024 & 0.922 \(\pm\) 0.039 & 0.930 \(\pm\) 0.057 & 0.902 \(\pm\) 0.052 & 0.881 \(\pm\) 0.30 & 1.10 \(\pm\) 0.09 \\
13.911 & Phenethyl alcohol & 0.661 \(\pm\) 0.011 & **0.835**\(\pm\) 0.043 & 0.963 \(\pm\) 0.053 & 0.496 \(\pm\) 0.028 & 1.41 \(\pm\) 0.35 & 2.62 \(\pm\) 0.18 & 3.48 \(\pm\) 0.31 & 3.81 \(\pm\) 0.34 \\
15.783 & Ethyl octanoate & 0.116 \(\pm\) 0.011 & and & 0.252 \(\pm\) 0.020 & 0.233 \(\pm\) 0.015 & 0.267 \(\pm\) 0.016 & 0.639 \(\pm\) 0.025 & 2.26 \(\pm\) 0.19 & 2.66 \(\pm\) 0.23 \\
17.174 & 1,3-Octanol & 2.63 \(\pm\) 0.24 & **3.13**\(\pm\) 0.24 & 5.48 \(\pm\) 0.29 & 5.04 \(\pm\) 0.41 & 4.33 \(\pm\) 0.20 & 3.23 \(\pm\) 0.21 & 4.90 \(\pm\) 0.26 & 5.80 \(\pm\) 0.31 \\
17.383 & Nomanoic acid & 4.48 \(\pm\) 0.33 & **5.83**\(\pm\) 0.40 & 5.20 \(\pm\) 0.31 & 5.37 \(\pm\) 0.37 & 4.49 \(\pm\) 0.31 & 6.32 \(\pm\) 0.36 & 5.52 \(\pm\) 0.41 & 2.19 \(\pm\) 0.19 \\
17.807 & 3-ethyl-1-isopropyl-2-pyrazine & 1.45 \(\pm\) 0.12 & **1.30**\(\pm\) 0.12 & 1.62 \(\pm\) 0.11 & nd & nd & nd & nd & nd \\
19.322 & 3-Allyl-6-metrosphenyl & 1.91 \(\pm\) 0.17 & nd & nd & nd & 3.50 \(\pm\) 0.25 & 2.12 \(\pm\) 0.19 & 3.34 \(\pm\) 0.29 & nd \\
19.358 & _n_-Decanoic acid & nd & **1.66**\(\pm\) 0.14 & nd & 1.02 \(\pm\) 0.09 & nd & nd & nd & nd \\
22.275 & 2,4-k(1-dimethyl-pyhenyl) & 3.16 \(\pm\) 0.26 & **2.59**\(\pm\) 0.23 & 2.17 \(\pm\) 0.18 & 1.84 \(\pm\) 0.16 & 3.87 \(\pm\) 0.28 & 3.73 \(\pm\) 0.31 & 2.31 \(\pm\) 0.21 & 2.19 \(\pm\) 0.18 \\
29.199 & 7-Dirr-butyl-1-cosasirro & 2.81 \(\pm\) 0.24 & **2.97**\(\pm\) 0.25 & 2.17 \(\pm\) 0.15 & 1.89 \(\pm\) 0.13 & 2.08 \(\pm\) 0.