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. 2021 Sep 30;26(19):5928. doi: 10.3390/molecules26195928

Table 1.

Mean Concentration (μg. g−1 DW) and relative standard deviation (%) of volatile compounds in citrus peel extracts from Navelina (Citrus sinensis L. Osbeck cv. “Navelina”), Salustriana (Citrus sinensis L. Osbeck cv. “Salustriana”), and Sanguina (Citrus x sinensis var. “Sanguina”), fresh, oven-dried (50 °C, 70 °C), and freeze-dried (FD).

KI COMPOUNDS Navelina Peel Salustriana Peel Sanguina Peel
Mean Fresh RSD Mean FD RSD Mean Oven 50 °C RSD Mean Oven 70 °C RSD Mean Fresh RSD Mean FD RSD Mean Oven 50 °C RSD Mean Oven 70 °C RSD Mean Fresh RSD Mean FD RSD Mean Oven 50 °C RSD Mean Oven 70 °C RSD
Sesquitenenes
1476 α-copaene 1.54 a (7.76) 1.71 a (10.91) 0.52 b (8.32) 0.38 b (12.97) 1.58 a (14.91) 1.2 a (16.90) 0.44 b (0.59) 0.34 c (7.16) 2.37 a (2.13) 2.92 b (5.07) a 1.26 c (6.93) 1.82 d (5.75)
1630 γ-elemene traces 0.29 a (11.78) 0.26 a (7.18) 0.71 b (7.52) traces 0.56 a (8.13) 0.36 b (3.61) 0.57 a (5.61) 0.33 a (7.56) 0.73 b (8.15) 0.13 c (8.63) 0.27 d (10.80)
1654 β-farnesene traces 0.58 a (9.82) 0.24 b (3.55) 2.17 c (15.98) traces 0.50 a (0.77) 0.25 b (0.71) 0.55 a (16.94) 0.27 a (10.17) 0.21 a (5.82) 0.24 a (9.51) 0.46 b (13.48)
1701 valencene 35.43 a (0.98) 36.67 a (12.97) 30.2 b (7.82) 13.31 c (10.29) 21.75 a (5.06) 27.45 b (7.76) 25.16 ab (7.99) 22.63 a (7.99) 20.54 a (7.63) 26.4 b (9.38) 5.86 c (10.07) 12.58 d (8.63)
1704 germacrene D 0.44 a (0.00) 0.81 b (6.73) 0.44 a (5.08) 0.12 c (8.29) 3.32 a (20.20) 3.37 a (6.88) 2.31 b (12.91) 2.04 b (7.31) 0.11 a (6.15) 0.38 b (0.31) 0.05 c (1.36) 0.21 d (4.85)
1723 α-farnesene 0.51 a (0.34) 0.87 b (12.97) 0.56 a (0.28) 0.42 c (4.98) 1.09 a (0.29) 0.88 b (11.05) 0.43 c (7.88) 0.31 d (0.26) 0.68 a (0.98) 3.22 b (8.07) 0.62 ac (9.51) 0.73 c (10.16)
1740 δ-cadinene traces 0.5 a (11.47) 0.19 b (6.86) 0.62 a (11.78) traces 0.36 a (3.96) 0.21 b (4.56) 0.26 b (3.01) 0.34 a (5.66) 0.91 b (2.11) 0.13 c (10.97) 0.65 d (6.86)
2016 nerolidol 2.06 a (8.15) 2.28 a (11.55) 0.42 b (5.82) 0.30 c (6.86) 0.99 a (7.99) 0.84 a (3.91) 0.64 c (4.07) 0.41 d (5.35) 0.66 a (7.83) 0.91 b (6.82) 0.41 c (12.97) 0.46 c (2.77)
2236 β-sinensal 11.8 a (6.86) 14.08 b (7.44) 5.69 c (7.52) 3.65 d (7.52) 3.19 a (8.63) 3.36 a (2.00) 2.6 b (0.01) 2.15 c (0.28) 5.17 a (7.76) 7.47 b (5.70) 0.35 c (3.85) 1.38 d (0.98)
2331 α-sinensal 10.95 a (12.55) 13.77 (14.14) a 4.91 b (10.05) 3.01 c (10.05) 4.32 a (18.69) 4.18 a (18.21) 1.86 b (0.01) 1.62 b (11.39) 4.32 a (8.32) 5.44 b (3.33) 0.73 c (6.67) 1.11 d (8.07)
2507 nootkatone 5.81 a (7.82) 6.16 a (2.59) 4.43 b (7.56) 2.86 b (7.56) 9.73 a (1.22) 11.03 b (8.13) 6.86 c (0.78) 4.03 d (10.07) 19.07 a (5.70) 27.75 b (3.53) 10.9 c (9.59) 13.21 d (7.25)
2083 elemol 3.93 a (9.47) 3.47 a (9.38) 0.81 a (3.51) 0.62 c (4.98) 1.82 a (8.15) 1.81 a (13.48) 1.81 a (7.63) 1.29 b (7.63) 1.3 a (10.14) 0.88 b (8.13) 1.65 c (7.76) 0.51 d (0.77)
2121 γ-eudesmol 1.12 a (12.91) 1.17 a (3.55) 0.25 b (14.88) 0.78 c (7.52) 0.67 a (9.38) 0.54 b (6.67) 0.51 b (13.26) 0.33 c (13.26) 0.21 a (6.73) 0.31 b (0.01) 0.32 b (8.32) 0.32 b (4.07)
2183 δ-eudesmol 2.15 a (1.40) 2.21 a (9.38) 1.17 b (9.38) 1.27 b (2.28) 5.05 a (10.05) 9.09 b (7.88) 5.09 a (6.67) 3.83 c (6.67) 7.81 a (1.75) 9.51 b (2.77) 4.68 c (13.26) 7.57 a (7.16)
2348 (E)-farnesol 1.33 a (7.63) 1.93 b (3.63) 1.4 a (8.63) 1.03 c (8.07) 1.58 a (12.55) 1.24 ab (4.85) 1.08 b (0.01) 0.68 c (0.01) 1.04 a (7.52) 1.62 b (7.31) 0.97 a (12.49) 1.02 a (6.86)
Total 76.57 86.5 51.49 31.25 55.09 66.41 49.61 41.04 64.22 88.66 28.3 42.3
Terpene oxide
1428 (Z)-linalool oxide 0.11 a (7.83) 0.21 b (6.07) 0.19 b (4.47) traces 0.17 a (8.44) 0.44 b (8.63) 0.78 c (5.14) 0.51 b (6.36) 0.07 a (10.88) 0.60 b (7.75) 0.57 b (3.40) traces
1430 (Z)-limonene-oxide 0.31 a (4.98) 0.64 b (3.82) 0.74 c (0.77) traces 0.11 a (6.73) 0.79 b (2.70) 0.91 c (7.63) 0.42 c (7.04) 0.09 a (8.32) 0.32 b (6.86) 0.41 b (5.82) 0.20 c (7.91)
1453 (E)-linalool oxide 0.16 a (1.40) 0.65 b (6.87) 1.24 c (2.77) traces 0.25 a (22.63) 0.29 ab (15.48) 0.31 b (6.96) 0.01 c (0.00) 0.10 a (14.14) 0.27 b (8.63) 0.67 c (5.08) 0.18 ab (6.82)
Total 0.58 1.50 2.17 0.03 0.53 1.52 2.00 0.94 0.26 1.19 1.65 0.39
Terpenoids alcohols
1541 linalool 66.79 a (0.88) 79.79 b (7.86) 81.02 b (6.33) 48.74 c (2.24) 32.52 a (7.44) 35.17 a (14.76) 45.12 b (1.53) 18.47 c (6.90) 63.90 a (6.67) 108.33 b (3.24) 80.96 (1.36) 24.52 (6.99)
1585 α-terpineol 32.08 a (11.55) 25.01 b (7.33) 7.81 b (7.25) 7.78 b (7.44) 17.61 a (8.71) 20.42 b (7.91) 7.61 c (6.86) 12.01 d (6.86) 34.72 a (12.91) 29.19 b (7.52) 7.00 (7.99) 5.86 (1.13)
1605 p-menthadienol (I) 7.35 a (8.07) 6.36 b (5.14) 13.13 b (12.91) 5.19 c (4.98) 5.62 a (11.55) 5.71 a (7.75) 7.76 c (11.55) 4.45 d (7.63) 8.26 a (6.09) 9.76 b (8.82) 11.41 (4.02) 2.37 (10.29)
1611 p-menth-2-en-1-ol 0.33 a (14.98) 0.35 a (8.15) 0.21 b (13.64) 0.69 c (11.78) 0.47 a (7.88) 0.37 b (8.44) 0.36 b (4.98) 0.37 b (4.98) 0.25 a (7.82) 0.36 b (7.63) 0.27 a (8.57) 0.09 (8.32)
1646 p-menthadienol (II) 8.94 a (5.47) 7.12 b (7.63) 7.70 b (1.40) 3.54 c (12.97) 4.90 a (7.63) 4.97 a (1.16) 4.12 b (2.63) 3.43 c (8.44) 6.08 a (7.88) 5.90 a (9.68) 5.62 ab (7.63) 5.19 b (11.91)
1667 β-citronellol 9.61 a (2.52) 8.66 b (3.84) 12.26 b (7.44) 7.64 c (2.52) 8.37 a (0.75) 8.26 a (7.82) 7.85 b (0.75) 6.41 c (9.38) 2.31 a (7.56) 2.77 a (6.82) 1.90 b (9.85) 5.13 c (13.38)
1786 nerol 14.48 a (5.81) 15.60 a (8.63) 10.26 b (4.90) 12.58 c (7.63) 7.46 a (5.60) 7.53 a (7.04) 7.99 b (8.60) 2.20 c (13.45) 5.78 a (13.15) 5.72 a (4.07) 1.38 b (5.05) 0.40 c (7.31)
1838 geraniol 14.46 a (13.24) 17.84 b (7.56) 7.13 b (8.31) 0.03 c (0.00) 8.97 a (10.03) 8.99 a (7.52) 5.88 b (10.03) 3.39 c (15.98) 8.60 a (9.51) 8.25 a (13.26) 1.46 b (3.78) 0.65 c (5.70)
1834 (Z)-carveol 2.28 a (10.54) 2.51 a (4.13) 2.42 a (12.63) 0.03 c (0.00) 2.77 a (3.02) 4.77 b (1.94) 1.53 c (2.75) 1.64 c (7.56) 1.10 a (3.33) 2.05 b (3.85) 1.70 c (1.05) 0.91 d (1.91)
1927 limonyl alcohol 0.73 a (8.15) 0.75 a (8.07) 0.59 b (8.07) 0.61 b (7.63) 0.58 a (0.00) 0.82 b (2.25) 0.62 a (3.45) 0.37 c (6.99) 0.21 a (5.15) 0.38 b (4.67) 0.20 a (3.05) 0.12 c (6.86)
1963 p-mentha-dien-9-ol 1.32 a (9.51) 1.73 ab (9.31) 1.98 b (6.99) 1.25 b (8.63) 3.58 a (3.43) 3.71 a (6.50) 2.64 b (5.43) 2.36 b (5.82) 0.63 a (5.05) 1.09 b (5.14) 0.61 a (13.73) 0.40 c (7.52)
1996 perillyl alcohol 2.04 a (7.18) 2.14 a (0.03) 2.14 a (14.74) 0.81 c (6.86) 1.34 a (2.42) 2.34 b (7.52) 0.79 c (1.38) 0.45 d (9.51) 0.49 a (9.59) 2.76 b (8.44) 0.70 c (2.37) 0.30 d (2.87)
2140 eugenol 0.39 a (8.15) 0.52 b (3.61) 0.38 a (10.05) 0.16 c (8.15) 1.03 a (3.85) 1.75 b (7.52) 0.98 a (3.85) 0.07 c (5.70) 0.27 a (7.31) 0.34 b (7.12) 0.25 a (7.63) 0.10 c (12.97)
Total 160.2 168.41 147.09 88.85 95.42 104.02 93.45 55.62 132.82 176.4 113.48 46.04
Monoterpenoid aldehydes
1468 citronellal 3.58 a (6.33) 3.99 a (10.40) 2.57 b (7.76) 0.00 c 1.14 a (5.82) 1.87 b (4.07) 1.70 c (0.71) 0.00 d 2.81 a (0.60) 3.19 b (3.35) 0.99 c (8.82) 0.00 d
1664 neral 3.66 a (4.95) 2.88 b (2.97) 4.74 c (1.26) 7.15 d (6.73) 1.33 a (3.30) 2.84 b (6.90) 3.37 c (7.45) 4.11 d (10.14) 2.20 a (2.16) 4.29 b (2.67) 5.95 c (9.51) 9.94 d (10.29)
1712 geranial 5.61 a (1.55) 4.66 b (6.73) 3.74 c (6.87) 2.26 d (5.82) 3.19 a (5.99) 2.09 b (7.63) 1.37 c (9.33) 1.56 c (7.63) 3.60 a (14.24) 4.19 b (11.41) 7.83 c (19.37) 5.69 d (0.02)
Total 12.85 11.53 11.05 9.41 5.66 6.8 6.44 5.87 8.61 11.67 14.77 15.63
Chain aldehydes
1284 octanal 12.04 a (6.73) 9.98 b (1.51) 5.08 (7.16) 3.39 (5.97) 6.98 a (8.38) 7.17 a (17.05) 5.84 c (7.31) 2.77 d (9.94) 9.57 a (14.76) 8.70 b (1.00) 7.04 c (2.00) 2.33 d
1386 nonanal 2.58 a (8.13) 1.63 b (6.09) 1.52 b (13.26) 0.73 c (7.56) 2.00 a (1.01) 1.65 b (3.19) 1.88 ab (4.86) 1.15 c (2.42) 2.01 a (7.63) 2.10 a (3.61) 2.54 b (2.16) 0.05 c
1490 decanal 13.91 a (7.31) 12.22 b (4.14) 11.00 c (6.09) 7.00 d (8.32) 11.52 a (3.31) 11.00 a (5.08) 5.86 b (1.02) 3.86 c (1.55) 4.76 a (7.63) 3.44 b (7.56) 3.21 b (5.98) 0.34 c
Total 27.83 23.93 18.1 11.12 20.5 20.42 13.58 7.78 16.34 14.24 12.49 2.72
Terpene hydrocarbons
1018 α- pinene 13.49 a (2.77) 13.58 a (1.48) 21.97 b (4.98) 8.48 c (8.03) 11.12 a (7.75) 19.76 b (3.31) 21.85 c (0.98) 9.50 d (0.98) 17.57 a (4.60) 17.85 a (3.05) 11.58 c (3.00) 10.21 d (10.81)
1104 β- pinene 5.63 a (4.52) 6.36 b (5.79) 7.51 c (2.76) 5.20 d (11.55) 4.60 a (8.13) 5.80 b (7.91) 7.43 c (7.18) 2.00 d (8.13) 11.34 a (7.56) 9.64 b (7.82) 13.34 c (11.22) 1.61 d (7.76)
1119 sabinene 7.65 a (13.34) 9.47 b (2.17) 13.94 c (8.32) 4.84 d (4.98) 5.90 a (10.07) 7.14 b (2.87) 10.53 c (7.99) 3.10 d (2.87) 9.56 a (3.97) 11.84 b (4.13) 14.25 c (6.73) 3.69 d (8.63)
1209 limonene 1687.15 a (4.98) 1637.25 a (1.59) 2055.82 b (7.31) 986.05 c (11.78) 1677.04 a (0.79) 1700.36 b (0.65) 2005.28 c (0.44) 852.33 d (7.83) 2107.74 a (3.65) 2190.26 b (0.72) 2424.57 c (8.32) 925.92 d (7.31)
1237 (Z)-b-ocimene 0.31 a (11.78) 0.48 b (7.16) 0.75 c (1.54) 0.15 d (3.61) 0.23 a (7.99) 0.32 b (0.77) 0.43 c (12.91) 0.14 d (0.77) 0.45 a (10.40) 0.41 a (6.90) 0.59 b (7.63) 0.00 c
1254 γ-terpinene 3.19 a (5.70) 3.46 b (5.95) 3.77 c (3.26) 2.21 d (1.40) 2.08 a (9.45) 2.34 a (8.47) 3.37 c (10.29) 2.21 d (7.45) 3.14 a (0.71) 3.99 b (1.98) 2.72 c (7.52) 0.78 d (10.92)
1256 (E) b-ocimene 1.73 a (3.33) 2.28 b (14.80) 3.26 c (1.40) 1.59 d (9.82) 1.39 a (8.71) 1.69 a (9.82) 3.23 c (7.12) 0.76 d (2.78) 0.60 a (1.94) 0.49 b (6.90) 0.64 a (0.26) 0.41 b (5.69)
1269 p-cymene 0.73 a (4.11) 0.86b (4.79) 0.91 b (3.51) 0.69 c (12.97) 0.42 a (9.04) 0.46 a (11.17) 0.46 a (9.61) 0.20 d (2.77) 0.38 a (3.31) 0.40 a (3.61) 1.09 b (7.25) 0.25 c (6.86)
1289 α-terpinolene 2.55 a (8.38) 2.47 a (10.14) 3.01 b (5.14) 1.21 c (12.32) 2.50 a (6.93) 2.36 a (8.22) 3.28 b (8.32) 1.42 c (8.32) 3.83 a (7.99) 4.42 b (7.44) 3.15 c (9.07) 0.59 d (8.62)
1368 alloocimene 0.11 a (8.13) 0.11 a (1.75) 0.20 b (17.91) 0.10 c (0.98) 0.17 a (3.55) 0.15 a (7.41) 0.18 a (14.93) 0.07 d (2.70) 0.09 a (8.47) 0.12 a (7.82) 0.23 c (3.13) 0.08 a (11.55)
1427 p-cymenene 0.31 a (7.99) 0.66 (6.86) 1.68 b (2.87) 0.75 c (7.41) 0.23 a (7.44) 0.10 b (7.44) 0.62 c (9.05) 0.00 d 0.35 a (7.88) 1.35 b (6.40) 1.48 b (5.70) 0.19 c (3.61)
1521 β-cubenene 0.35 a (7.52) 0.69 b (6.73) 0.90 c (7.16) 0.42 d (7.31) 1.23 a (3.33) 0.54 b (3.33) 0.83 c (7.63) 1.28 a (7.18) 0.44 a (13.26) 0.41 a (6.09) 1.20 c (6.93) 0.28 d (8.15)
1578 transCaryophyllene 2.14 a (6.86) 2.96 b (5.82) 6.62 b (2.59) 1.77 c (6.86) 4.09 a (11.62) 4.45 ab (4.60) 4.77 b (1.36) 2.01 c (6.09) 2.75 a (8.13) 3.59 b (1.57) 7.50 c (10.89) 2.14 d (9.38)
1703 β-selinene 2.52 a (0.36) 3.30 b (1.49) 4.43 c (7.21) 0.30 d (8.15) 4.58 a (10.72) 4.13 a (11.69) 5.81 b (6.44) 2.39 c (14.76) 2.30 a (3.26) 2.90 b (7.52) 4.67 c (4.65) 1.62 d (7.88)
Total 1727.86 1683.49 2124.68 1013.76 1715.58 1749.1 2068.09 877.72 2190.64 2236.98 2487.17 947.84
Terpene Esters
1546 linalyl acetate 0.82 a (6.86) 0.64 b (0.22) 0.41 c (8.32) 0.00 d 0.09 a (12.91) 0.11 a (10.00) 0.01 b (1.00) 0.00 c 1.13 a (13.65) 0.89 b (5.06) 0.41 c (4.98) 0.29 d (1.01)
1570 bornyl acetate 0.48 a (8.63) 0.26 b (6.99) 0.24 b (5.70) 0.00 c 0.38 a (1.09) 0.36 b (6.53) 0.34 a (1.02) 0.12 b (14.76) 0.19 a (1.82) 0.25 b (1.00) 0.01 c (0.00) 0.01 d (0.00)
1644 citronelly acetate 0.23 a (6.86) 0.20 a (10.05) 0.12 b (3.61) 0.11 b (9.82) 0.16 a (1.40) 0.14 b (1.40) 0.00 b 0.00 b 1.41 a (5.70) 1.33 a (6.99) 1.41 a (8.44) 0.68 b (2.15)
1673 terpinyl acetate 3.80 a (13.65) 3.49 a (13.26) 1.08 b (10.14) 0.82 c (12.97) 1.36 a (0.00) 1.30 a (0.00) 1.16 b (7.12) 0.64 c (6.73) 3.22 a (5.70) 2.51 b (2.63) 0.45 c (8.47) 0.57 d (8.13)
1711 geranyl acetate 0.51 a (4.30) 0.49 a (6.86) 0.30 b (10.14) 0.17 c (7.63) 1.38 a (7.42) 0.49 b (5.70) 0.37 c (8.71) 0.27 d (11.92) 0.53 a (10.07) 0.55 a (6.86) 0.51 a (7.75) 0.26 b (7.82)
1742 neryl acetate 0.72 a (12.55) 0.77 a (3.61) 0.39 b (3.64) 0.23 c (8.15) 0.68 a (2.46) 0.66 a (2.68) 0.50 b (0.00) 0.32 c (10.68) 1.04 a (3.92) 1.09 a (1.82) 0.80 b (2.90) 0.34 d (5.09)
Total 6.56 5.72 2.54 1.39 4.05 3.08 2.39 1.36 7.72 6.38 3.59 2.15
C6 Alcohols
1350 1-hexanol 10.21 a (12.97) 9.83 a (0.31) 1.04 b (8.13) 0.00 c 2.76 a (1.01) 2.01 b (1.36) 0.76 c (36.35) 0.00 d 1.73 a (6.86) 1.69 a (9.68) 0.67 b (12.91) 0.32 c (8.63)
1381 (Z)-3-hexen-1-ol 3.55 a (0.98) 3.39 a (2.08) 0.26 b (10.07) 0.00 c 1.30 a (8.19) 1.07 a (5.98) 0.19 b (0.00) 0.00 c 0.58 a (8.71) 0.52 a (8.63) 0.14 b (4.98) 0.00 c
Total 13.76 13.22 1.30 0,00 4.06 3.08 0.95 0.00 2.31 2.11 0.81 0.33

KI: Kovats index; a, b, c, d: Different letters in the same row denote significant difference according to the Student-Newman-Keuls test (p < 0.05).