Volatile Compounds in Citrus Essential Oils: A Comprehensive Review

Abreu, 2017, Natural occurrence of aldol condensation products in Valencia orange oil., J. Food Sci., 82, 2805, 10.1111/1750-3841.13948

Ahmed, 2001, Seasonal variation in lemon (Citrus limon L. Burm. F) leaf and rind oil composition., J. Essent. Oil Res., 13, 149, 10.1080/10412905.2001.9699646

Akakabe, 2010, A comparison of volatile components of Setomi with its parent cultivars., Biosci. Biotechnol. Biochem., 74, 659, 10.1271/bbb.90722

Akakabe, 2008, Identification and characterization of volatile components of the Japanese Sour Citrus fruit Citrus nagato-yuzukichi Tanaka., Biosci. Biotechnol. Biochem., 72, 1965, 10.1271/bbb.80144

Aliberti, 2016, Chemical composition and in vitro antimicrobial, cytotoxic, and central nervous system activities of the essential oils of Citrus medica L. cv. ‘Liscia’ and C. medica cv. ‘Rugosa’ cultivated in Southern Italy., Molecules, 21, 10.3390/molecules21091244

Alissandrakis, 2003, Ultrasound-assisted extraction of volatile compounds from citrus flowers and citrus honey., Food Chem., 82, 575, 10.1016/S0308-8146(03)00013-X

Alonzo, 2000, Citrus cybrid leaf essential oil., Flavour Frag. J., 15, 91, 10.1002/(SICI)1099-1026(200003/04)15:2<91::AID-FFJ872>3.0.CO;2-X

Asikin, 2015, Cultivation line and fruit ripening discriminations of Shiikuwasha (Citrus depressa Hayata) peel oils using aroma compositional, electronic nose, and antioxidant anlyses., Food Res. Int., 67, 102, 10.1016/j.foodres.2014.11.015

Asikin, , The composition of volatile aroma components, flavanones, and polymethoxylated flavones in shiikuwasha (Citrus depressa Hayata) peels of different cultivation lines., J. Agric. Food Chem., 60, 7973, 10.1021/jf301848s

Asikin, , Volatile aroma components and antioxidant activities of the flavedo peel extract of unripe shiikuwasha (Citrus depressa Hayata)., J. Food Sci., 77, 469, 10.1111/j.1750-3841.2011.02604.x

Baik, 2008, Chemical composition and biological activities of essential oils extracted from Korean endemic Citrus species., J. Microbiol. Biotechnol., 18, 74

Belsito, 2007, Comparison of the volatile constituents in cold-pressed bergamot oil and a volatile oil isolated by vacuum distillation., J. Agric. Food Chem., 55, 7847, 10.1021/jf070997q

Ben Hsouna, 2017, Citrus lemon essential oil: chemical composition, antioxidant and antimicrobial activities with its preservative effect against Listeria monocytogenes inoculated in minced beef meat., Lipids Health Dis., 16, 10.1186/s12944-017-0487-5

Benelli, 2010, Bioactive extracts of orange (Citrus sinensis L. Osbeck) pomace obtained by SFE and low pressure techniques: mathematical modeling and extract composition., J. Supercrit. Fluids, 55, 132, 10.1016/j.supflu.2010.08.015

Benjamin, 2013, Effects of rootstock/scion combinations on the flavor of Citrus fruit., J. Agric. Food Chem., 61, 11286, 10.1021/jf402892p

Blanco Tirado, 1995, Comparative study of Colombian citrus oils by high-resolution gas chromatography and gas chromatography-mass spectrometry., J. Chromatogr. A, 697, 501, 10.1016/0021-9673(94)00955-9

Blázquez, 2015, Control of Portulaca oleracea by boldo and lemon essential oils in different soils., Ind. Crops Prod., 76, 515, 10.1016/j.indcrop.2015.07.019

Bonaccorsi, 1999, Fast HPLC for the analysis of oxygen heterocyclic compounds of Citrus essential oils., J. Agric. Food Chem., 47, 4237, 10.1021/jf990417s

Boussaada, 2006, Chemical composition of essential oils from flowers, leaves and peel of Citrus aurantium L. var. amara from Tunisia., J. Essent. Oil Bear. Pl., 9, 133, 10.1080/0972060X.2006.10643484

Boussaada, 2007, Chemical variability of flowers, leaves, and peels oils of four sour orange provenances., J. Essent. Oil Bear Plants, 10, 453, 10.1080/0972060X.2007.10643579

Brophy, 2001, The leaf oils of the Australian species of Citrus (Rutaceae)., J. Essent. Oil Bear Plant, 13, 264, 10.1080/10412905.2001.9699690

Buettner, 2003, Evaluation of the most odour-active compounds in the peel oil of clementines (Citrus reticulata blanco cv. clementine)., Eur. Food Res. Technol., 216, 11, 10.1007/s00217-002-0586-y

Cannon, 2015, Identification, synthesis, and characterization of novel sulfur-containing volatile compounds from the in-depth analysis of Lisbon lemon peels (Citrus limon L. Burm. f. cv. Lisbon)., J. Agric. Food Chem., 63, 1915, 10.1021/jf505177r

Carbonell-Caballero, 2015, A phylogenetic analysis of 34 chloroplast genomes elucidates the relationships between wild and domestic species within the genus Citrus., Mol. Biol. Evol., 32, 2015, 10.1093/molbev/msv082

Casilli, 2014, Multidimensional gas chromatography hyphenated to mass spectrometry and olfactometry for the volatile analysis of Citrus hybrid peel extract., J. Chromatogr. A, 1373, 169, 10.1016/j.chroma.2014.11.023

Chen, 2014, Effect of second cooling on the chemical components of essential oils from orange peel (Citrus sinensis)., J. Agric. Food Chem., 62, 8786, 10.1021/jf501079r

Cheong, 2012, Characterization of calamansi (Citrus microcarpa). Part I: volatiles, aromatic profiles and phenolic acids in the peel., Food Chem., 134, 686, 10.1016/j.foodchem.2012.02.162

Cheong, , Identification of aroma-active compounds in Malaysian pomelo (Citrus grandis (L.) Osbeck) peel by gas chromatography-olfactometry., J. Essent. Oil Res., 23, 34, 10.1080/10412905.2011.9712279

Cheong, , Characterization of volatile compounds and aroma profiles of Malaysian pomelo (Citrus grandis (L.) Osbeck) blossom and peel., J. Essent. Oil Res., 23, 33, 10.1080/10412905.2011.9700445

Chisholm, , Characterization of the major odorants found in the peel oil of Citrus reticulata Blanco cv. Clementine using gas chromatography-olfactometry., Flavour Frag. J., 18, 275, 10.1002/ffj.1188

Chisholm, , Characterization of aroma volatiles in key lime essential oils (Citrus aurantifolia Swingle)., Flavour Frag. J., 18, 106, 10.1002/ffj.1172

Choi, , Characterization of Citrus unshiu (C. unshiu Marcov. forma Miyagawa-wase) blossom aroma by solid-phase microextraction in conjunction with an electronic nose., J. Agric. Food Chem., 51, 418, 10.1021/jf0114280

Choi, , Character impact odorants of Citrus hallabong [(C.unshiu Marcov x C. sinensis Osbeck) x C. reticulata Blanco] cold-pressed peel oil., J. Agric. Food Chem., 51, 2687, 10.1021/jf021069o

Choi, 2005, Characteristic odor components of kumquat (Fortunella japonica Swingle) peel oil., J. Agric. Food Chem., 53, 1642, 10.1021/jf040324x

Choi, 2006, Lipolytic effects of citrus peel oils and their components., J. Agric. Food Chem., 54, 3254, 10.1021/jf052409j

Choi, 2001, Characterization of the odor-active volatiles in Citrus Hyuganatsu (Citrus tamurana Hort. ex Tanaka)., J. Agric. Food Chem., 49, 2404, 10.1021/jf001467w

Choi, 2004, Headspace-SPME Analysis of Citrus Hybrid, Hallabong., Food Sci. Biotechnol., 13, 126

Choi, 2002, Characterization of the key aroma compounds of Citrus flaviculpus Hort. ex Tanaka by aroma extraction dilution analysis., Food Chem. Toxicol., 67, 1713, 10.1111/j.1365-2621.2002.tb08711.x

Chung, 2012, Characterization of volatile aroma-active compounds in Dangyooja (Citrus grandis Osbeck)., J. Korean Soc. Appl. Biol. Chem., 55, 133, 10.1007/s13765-012-0023-2

Chung, 2012, Volatile compounds of the Hallabong (Citrus kiyomi x Citrus ponkan) blossom., Food Sci. Biotechnol., 21, 285, 10.1007/s10068-012-0038-9

Cosimi, 2009, Bioactivity and qualitative analysis of some essential oils from Mediterranean plants against stored-product pest: Evaluation of repellency against Sitophilus zeamais Motschulsky, Cryptolestes ferrugineus (Stephens) and Tenebrio molitor (L.)., J. Stored Prod. Res., 45, 125, 10.1016/j.jspr.2008.10.002

Costa, 2014, Antimicrobial activity and chemical composition of Citrus aurantifolia (Christm.) Swingle essential oil from Italian organic crops., J. Essent. Oil Res., 26, 400, 10.1080/10412905.2014.964428

Costa, 2010, Study on the chemical composition variability of some processed bergamot (Citrus bergamia) essential oil., Flavour Frag. J., 25, 4, 10.1002/ffj.1949

Craske, 2005, A comparison of the peel oil components of Australian native lime (Microcitrus australe) and Mexican lime (Citrus aurantifolia Swingle)., J. Sci. Food Agric., 85, 522, 10.1002/jsfa.2038

Darjazi, , A comparison of volatile components of flower of page mandarin obtained by ultrasound-assisted extraction and hydrodistillation., J. Med. Plants Res., 5, 2839

Darjazi, , Comparison of volatile components of flower, leaf, peel and juice of ’Page’ mandarin [(Citrus reticulata var ’Dancy’ x Citrus paradisi var ’Duncan’) x Citrus clementina]., Afr. J. Biotechnol., 10, 10437, 10.5897/AJB11.1069

Delort, 2009, Novel terpenyl esters from Australian finger lime (Citrus australasica) peel extract., Flavour Frag. J., 24, 123, 10.1002/ffj.1922

Delort, 2015, Comparative analysis of three Australian finger lime (Citrus australasica) cultivars: Identification of unique Citrus chemotypes and new volatile molecules., Phytochemistry, 109, 111, 10.1016/j.phytochem.2014.10.023

Dharmawan, 2009, Evaluation of aroma-active compounds in Pontianak orange peel oil (Citrus nobilis Lour. Var. microcarpa Hassk.) by gas chromatography-olfactometry, aroma reconstitution, and omission test., J. Agric. Food Chem., 57, 239, 10.1021/jf801070r

Dong, 2014, Isolation and characterization of essential oil extracted from tangerine peel., Asian J. Chem., 26, 4975, 10.14233/ajchem.2014.16277

Družić, 2016, Chemical biodiversity of the leaf and flower essential oils of Citrus aurantium L. from Dubrovnik area (Croatia) in comparison with Citrus sinensis L. Osbeck cv. Washington navel, Citrus sinensis L. Osbeck cv. Tarocco and Citrus sinensis L. Osbeck cv. Doppio Sanguigno., J. Essent. Oil Res., 28, 283, 10.1080/10412905.2016.1159258

Dugo, 2011, Characterization of oils from the fruits, leaves and flowers of the bitter orange tree., J. Essent. Oil Res., 23, 45, 10.1080/10412905.2011.9700446

Dugo, 2011, Citrus Oils: Composition, Advanced Analytical Techniques, Contaminants, and Biological Activity

Dugo, 1996, On the genuineness of citrus essential oils. Oxygen heterocyclic compounds of bitter orange oil (Citrus aurantium L.)., J. Agric. Food Chem., 44, 544, 10.1021/jf950183m

Dugo, 2005, Characterization of cold-pressed Mexican dancy tangerine oils., Flavour Frag. J., 20, 60, 10.1002/ffj.1367

Elmaci, 2012, Mandarin peel aroma: estimation by using headspace/GC/MS and descriptive analysis techniques., Acta Aliment., 41, 131, 10.1556/AAlim.41.2012.1.15

Esquivel-Ferriño, 2014, Volatile constituents identified in hexane extract of Citrus sinensis peel and anti-mycobacterial tuberculosis activity of some of its constituents., J. Mex. Chem. Soc., 58, 431

Fancello, 2016, Chemical characterization, antioxidant capacity and antimicrobial activity against food related microorganisms of Citrus limon var. pompia leaf essential oil., LWT Food Sci. Technol., 69, 579, 10.1016/j.lwt.2016.02.018

Fanciullino, 2005, Effects of nucleo-cytoplasmic interactions on leaf volatile compounds from Citrus somatic diploid hybrids., J. Agric. Food Chem., 53, 4517, 10.1021/jf0502855

Fanciullino, 2006, Chemical variability of peel and leaf oils of mandarins., Flavour Frag. J., 21, 359, 10.1002/ffj.1658

Feger, 2000, Sesquiterpene hydrocarbons of cold-pressed lime oils., Flavour Frag. J., 15, 281, 10.1002/1099-1026(200007/08)15:4<281::AID-FFJ916>3.0.CO;2-W

Feger, , Analytical investigation of sweetie peel oil., J. Essent. Oil Res., 13, 309, 10.1080/10412905.2001.9712221

Feger, , Germacrenes in citrus peel oils., J. Essent. Oil Res., 13, 274, 10.1080/10412905.2001.9699692

Ferhat, 2007, Comparison of different isolation methods of essential oil from Citrus fruits: cold pressing, hydrodistillation and microwave ’dry’ distillation., Flavour Frag. J., 22, 494, 10.1002/ffj.1829

Fisher, 2008, Characterisation of the most odour-active compounds in a peel oil extract from Pontianak oranges (Citrus nobilisvar. Lour. microcarpa Hassk.)., Eur. Food Res. Technol., 227, 735, 10.1007/s00217-007-0781-y

Flamini, 2010, Odour gradients and patterns in volatile emission of different plant parts and developing fruits of grapefruit (Citrus paradisi L.)., Food Chem., 120, 984, 10.1016/j.foodchem.2009.11.037

Flamini, 2007, Volatiles emission patterns of different plant organs and pollen of Citrus limon., Anal. Chim. Acta, 589, 120, 10.1016/j.aca.2007.02.053

Fouad, 2017, Chemical composition and bioactivity of peel oils from Citrus aurantifolia and Citrus reticulata and enantiomers of their major constituents against Sitophilus zeamais (Coleoptera: Curculionidae)., J. Stored Prod. Res., 73, 30, 10.1016/j.jspr.2017.06.001

Frizzo, 2004, Composition and seasonal variation of the essential oils from two mandarin cultivars of Southern Brazil., J. Agric. Food Chem., 52, 3036, 10.1021/jf030685x

Furneri, 2012, In vitro antimycoplasmal activity of Citrus bergamia essential oil and its major components., Eur. J. Med. Chem., 52, 66, 10.1016/j.ejmech.2012.03.005

Gancel, 2002, Leaf and peel volatile compounds of an interspecific citrus somatic hybrid [Citrus aurantifolia (Christm.) Swing. + Citrus paradisi Macfayden]., Flavour Frag. J., 17, 416, 10.1002/ffj.1119

Gancel, 2003, Leaf volatile compounds of seven citrus somatic tetraploid hybrids sharing willow leaf mandarin (Citrus deliciosa Ten.) as their common parent., J. Agric. Food Chem., 51, 6006, 10.1021/jf0345090

Gancel, 2005, Leaf volatile compounds of six citrus somatic allotetraploid hybrids originating from various combinations of lime, lemon, citron, sweet orange, and grapefruit., J. Agric. Food Chem., 53, 2224, 10.1021/jf048315b

González-Mas, 2011, Comparative analysis of the volatile fraction of fruit juice from different Citrus species., PLoS One, 6, 10.1371/journal.pone.0022016

González-Mas, 2015, Análisis no dirigido del aceite esencial de las variedades de mandarino Clemenules y Clemenpons., Levante Agrícola, 429, 232

Guerrini, 2014, Biological and chemo-diverse characterization of Amazonian (Ecuador) Citrus petitgrains., J. Appl. Bot. Food Qual., 87, 108

Hamdan, 2010, Chemical composition of the essential oils of two Citrus species and their biological activities., Pharmazie, 65, 141

Högnadóttir, 2003, Identification of arome active compounds in orange essence oil using gas chromatography-olfactometry and gas chromatography-mass spectrometry., J. Chromatogr. A, 998, 201, 10.1016/S0021-9673(03)00524-7

Hosni, 2010, Composition of peel essential oils from four selected Tunisian Citrus species: evidence for the genotypic influence., Food Chem., 123, 1098, 10.1016/j.foodchem.2010.05.068

Huang, 2017, Analysis of volatile compounds from different parts of Citrus grandis (L.) Osbeck flowers by Headspace Solid-Phase Microextraction-Gas Chromatography-Mass Spectrometry., J. Essent. Oil Bear Plant, 20, 1057, 10.1080/0972060X.2017.1377112

Huang, 2000, The chemical composition of the leaf essential oils from 110 Citrus species, cultivars, hybrids and varieties of Chinese origin., Perfum. Flavor., 25, 53

Inafuku-Teramoto, 2011, Polymethoxyflavones, synephrine and volatile constitution of peels of citrus fruit grown in Okinawa., J. Jpn. Soc. Hortic. Sci., 80, 214, 10.2503/jjshs1.80.214

Jabalpurwala, 2009, A comparison of citrus blossom volatiles., Phytochemistry, 70, 1428, 10.1016/j.phytochem.2009.07.031

Jabri Karoui, 2013, Characterization of bioactive compounds in Tunisian bitter orange (Citrus aurantium L.) peel and juice and determination of their antioxidant activities., Biomed. Res. Int., 2013, 10.1155/2013/345415

Jazet Dongmo, 2009, Essential oils of Citrus aurantifolia from Cameroon and their antifungal activity against Phaeoramularia angolensis., Afr. J. Agric. Res., 4, 354

Jiang, 2011, Comparative GC/MS analysis of essential oils extracted by 3 methods from the bud of Citrus aurantium L. var. amara Engl., J. Food Sci., 76, 1219, 10.1111/j.1750-3841.2011.02421.x

Jing, 2014, Antifungal activity of citrus essential oils., J. Agric. Food Chem., 62, 3011, 10.1021/jf5006148

Jirapakkul, 2013, Effect of drying temperature on key odourants in kaffir lime (Citrus hystrix D.C., Rutaceae) leaves., Int. J. Food Sci. Tech., 48, 143, 10.1111/j.1365-2621.2012.03170.x

Karioti, 2007, Constituents of the distilled essential oils of Citrus reticulata and C. paradisi from Nigeria., J. Essent. Oil Res., 19, 520, 10.1080/10412905.2007.9699320

Kerdchoechuen, 2010, Essential oils from six herbal plants for biocontrol of the maixe weevil., Hortscience, 45, 592, 10.21273/HORTSCI.45.4.592

Kerry, 2002, Meat Processing, Improvent Quality, 480

Kirbaslar, 2001, The compositions of Turkish bergamot oils produced by cold-pressing and steam distillation., J. Essent. Oil Res., 13, 411, 10.1080/10412905.2001.9699710

Kirbaslar, 2004, Composition of Turkish bitter orange and lemon leaf oils., J. Essent. Oil Res., 16, 105, 10.1080/10412905.2004.9698663

Lamine, 2018, From differentially accumulated volatiles to the search of robust metabolic classifiers: exploring the volatome of Citrus leaves., Microchem. J., 138, 321, 10.1016/j.microc.2018.01.030

Lan Phi, 2006, Evaluation of characteristic aroma compounds of Citrus natsudaidai Hayata (Natsudaidai) cold-pressed peel oil., Biosci. Biotechnol. Biochem., 70, 1832, 10.1271/bbb.50705

Lan Phi, 2009, Chemical and aroma profiles of yuzu (Citrus junos) peel oils of different cultivars., Food Chem., 115, 1042, 10.1016/j.foodchem.2008.12.024

Li, 2016, Characterization of the aldehydes and their transformations induced by uv irradiation and air exposure of white guanxi honey pummelo (Citrus grandis (L.) Osbeck) essential oil., J. Agric. Food Chem., 64, 5000, 10.1021/acs.jafc.6b01369

Lin, 2001, Characterization of aroma-impact compounds in cold-pressed grapefruit oil using time-intensity GC-olfactometry and GC-MS., Flavour Frag. J., 16, 457, 10.1002/ffj.1041

Lin, 2010, Volatile organic components of fresh leaves as indicators of indigenous and cultivated citrus species in Taiwan., Biosci. Biotechnol. Biochem., 74, 806, 10.1271/bbb.90891

Liu, 2012, Volatile constituents of wild Citrus Mangshanyegan (Citrus nobilis Lauriro) peel oil., J. Agric. Food Chem., 60, 2617, 10.1021/jf2039197

Liu, 2015, Features of citrus terpenoid production as revealed by carotenoid, limonoid and aroma profiles of two pummelos (Citrus maxima) with different flesh color., J. Sci. Food Agric., 95, 111, 10.1002/jsfa.6689

Loizzo, 2016, Chemical profile and antioxidant properties of extracts and essential oils from Citrus x limon (L.) BURM. cv. Femminello comune., Chem. Biodiversity, 13, 571, 10.1002/cbdv.201500186

Lota, , Chemical variability of peel and leaf essential oils of sour orange., Flavour Frag. J., 16, 89, 10.1002/1099-1026(200103/04)16:2<89::AID-FFJ950>3.0.CO;2-D

Lota, , Chemical variabiliy of peel and leaf essential oils of 15 species of mandarins., Biochem. Syst. Ecol., 29, 77, 10.1016/S0305-1978(00)00029-6

Lota, 1999, Chemical composition of peel and leaf essential oils of Citrus medica L. and C. limonimedica Lush., Flavour Frag. J., 14, 161, 10.1002/(SICI)1099-1026(199905/06)14:3<161::AID-FFJ801>3.0.CO;2-8

Lota, 2002, Volatile components of peel and leaf oils of lemon and lime species., J. Agric. Food Chem., 50, 796, 10.1021/jf010924l

Luciardi, 2016, Mandarin essential oils inhibit quorum sensing and virulence factors of Pseudomonas aeruginosa., LWT Food Sci. Technol., 68, 373, 10.1016/j.lwt.2015.12.056

Merle, 2004, Taxonomical contribution of essential oils in mandarins cultivars., Biochem. Syst. Ecol., 32, 491, 10.1016/j.bse.2003.09.010

Minh Tu, , Characteristic odour components of Citrus sp. (Kiyookadaidai) cold-pressed peel oil., Flavour Frag. J., 18, 515, 10.1002/ffj.1260

Minh Tu, , Characteristic odour components of Citrus inflata Hort. ex Tanaka (Mochiyu) cold-pressed peel oil., Flavour Frag. J., 18, 454, 10.1002/ffj.1252

Minh Tu, , Characteristic odor components of Citrus sphaerocarpa Tanaka (Kabosu) cold-pressed peel oil., J. Agric. Food Chem., 50, 2908, 10.1021/jf011578a

Minh Tu, , Volatile constituents of Vietnamese pummelo, orange, tangerine and lime peel oils., Flavour Frag. J., 17, 169, 10.1002/ffj.1076

Mitiku, 2000, Volatile components of peel cold-pressed oils of two cultivars of sweet orange (Citrus sinensis (L.) Osbeck) from Ethiopia., Flavour Frag. J., 15, 240, 10.1002/1099-1026(200007/08)15:4<240::AID-FFJ902>3.0.CO;2-F

Mitropoulou, 2017, Citrus medica essential oil exhibits significant antimicrobial and antiproliferative activity., LWT Food Sci. Technol., 84, 344, 10.1016/j.lwt.2017.05.036

Miyazaki, 2012, Aroma characterization of tangerine hybrids by gas-chromatography-olfactometry and sensory evaluation., J. Sci. Food Agric., 92, 727, 10.1002/jsfa.4663

Miyazato, 2012, Identification of the odour-active aldehyde trans-4,5-epoxy-(E,Z)-2,7-decadienal in yuzu (Citrus junos Sieb. ex Tanaka)., Eur. Food Res. Technol., 235, 881, 10.1007/s00217-012-1820-x

Miyazato, 2013, First identification of the odour-active unsaturated aliphatic acid (E)-4-methyl-3-hexenoic acid in yuzu (Citrus junos Sieb. ex Tanaka)., Flavour Frag. J., 28, 62, 10.1002/ffj.3128

Miyazawa, 2010, Aroma character impact compounds in Kinokuni mandarin orange (Citrus kinokuni) compared with satsuma mandarin orange (Citrus unshiu)., Biosci. Biotechnol. Biochem., 74, 835, 10.1271/bbb.90937

Miyazawa, 2009, Novel character impact compounds in yuzu (Citrus junos Sieb. ex Tanaka) peel oil., J. Agric. Food Chem., 57, 1990, 10.1021/jf803257x

Mondello, 2003, Comparison of fast and conventional GC analysis for Citrus essential oils., J. Agric. Food Chem., 51, 5602, 10.1021/jf0341971

Naef, 2001, Volatile constituents in extracts of mandarin and tangerine peel., J. Essent. Oil Res., 13, 154, 10.1080/10412905.2001.9699647

Njoroge, 2008, Essential oil components of common mandarins (Citrus reticulata Blanco) from Uganda., J. Essent. Oil Bear. Plant, 11, 609, 10.1080/0972060X.2008.10643675

Njoroge, , Essential oil constituents of three varieties of Kenyan sweet oranges (Citrus sinensis)., Flavour Frag. J., 20, 80, 10.1002/ffj.1377

Njoroge, , Volatile constituents of redblush grapefruit (Citrus paradisi) and pummelo (Citrus grandis) peel essential oils from Kenya., J. Agric. Food Chem., 53, 9790, 10.1021/jf051373s

Oh, 2007, Composition and antimicrobial activities of essential oils in the peel of Citrus fruits., J. Appl. Biol. Chem., 50, 148

Omori, 2011, Characterization of aroma compounds in the peel extract of Jabara (Citrus jabara Hort. ex Tanaka)., Flavour Frag. J., 26, 396, 10.1002/ffj.2066

Othman, 2017, Essential oils from the Malaysian Citrus (Rutaceae) medicinal plants., Medicines, 3, 10.3390/medicines3020013

Palazzolo, 2013, Current and potential use of Citrus essential oils., Curr. Org. Chem., 17, 3042, 10.2174/13852728113179990122

Paoli, 2016, Chemical composition of the leaf essential oil of grapefruits (Citrus paradisi Macf.) in relation with the genetic origin., J. Essent. Oil Res., 28, 265, 10.1080/10412905.2016.1140090

Petretto, 2016, Citrus monstruosa discrimination among several Citrus species by multivariate analysis of volatiles: a metabolomic approach., J. Food Process. Preserv., 40, 950, 10.1111/jfpp.12674

Pino, 2006, Analysis of cold-pressed mandarin peel oil from Cuba., J. Essent. Oil Bear. Plant, 9, 271, 10.1080/0972060X.2006.10643503

Pino, 2007, Chromatographic deterpenation of mandarin cold-pressed oil., J. Essent. Oil Bear. Plant, 10, 504, 10.1080/0972060X.2007.10643587

Pino, 2000, Composition of cold-pressed bitter orange oil from Cuba., J. Essent. Oil Res., 12, 675, 10.1080/10412905.2000.9712187

Poiana, 2003, Supercritical carbon dioxide separation of bergamot essential oil by a countercurrent process., Flavour Frag. J., 18, 429, 10.1002/ffj.1245

Qiao, 2008, Characterization of aroma active compounds in fruit juice and peel oil of jinchen sweet orange fruit (Citrus sinensis (L.) Osbeck) by GC-MS and GC-O., Molecules, 13, 1333, 10.3390/molecules13061333

Qiu, 2015, Application of sensory evaluation, HS-SPME GC-MS, E-nose, and E-tongue for quality detection in Citrus fruits., J. Food Sci., 80, S2296, 10.1111/1750-3841.13012

Rambla, 2015, Tomato fruit volatile profiles are highly dependent on sample processing and capturing methods., Metabolomics, 11, 1708, 10.1007/s11306-015-0824-5

Rambla, 2014, Fruit volatile profiles of two Citrus hybrids are dramatically different from those of their parents., J. Agric. Food Chem., 62, 11312, 10.1021/jf5043079

Ruberto, 2002, Essential oils of new pigmented citrus hybrids: Citrus sinensis L. Osbeck x C. clementina Hort. ex Tanaka., J. Food Sci., 67, 2778, 10.1111/j.1365-2621.2002.tb08815.x

Ruberto, 1997, Essential oil of two new pigmented Citrus hybrids, Citrus clementina x Citrus sinensis., J. Agric. Food Chem., 45, 467, 10.1021/jf960109j

Russo, 2015, Reduced time HPLC analyses for fast quality control of citrus essential oils., J. Essent. Oil Res., 27, 307, 10.1080/10412905.2015.1027419

Salgueiro, 2010, Raw materials: the importance of quality and safety. A review., Flavour Frag. J., 25, 253, 10.1002/ffj.1973

Sarrou, 2013, Volatile constituents and antioxidant activity of peel, flowers and leaf oils of Citrus aurantium L. growing in Greece., Molecules, 18, 10639, 10.3390/molecules180910639

Sawamura, 2005, Volatile constituents of the peel oils of several sweet oranges in China., J. Essent. Oil Res., 17, 2, 10.1080/10412905.2005.9698813

Sawamura, 2006, Characteristic odour components of bergamot (Citrus bergamia Risso) essential oil., Flavour Frag. J., 21, 609, 10.1002/ffj.1604

Sawamura, 1991, Volatile constituents of several varieties of pummelos and characteristics among citrus species., Agric. Biol. Chem., 55, 2571

Schipilliti, 2018, Authentication of citrus volatiles based on carbon isotope ratios., J Essent. Oil Res., 30, 1, 10.1080/10412905.2017.1377123

Selvaraj, 2002, Profiles of essential oils of peel and leaf of a new Citrus hybrid, Citrus latifolia Tanaka x Citrus aurantifolia Swingle., J. Essent. Oil Res., 14, 369, 10.1080/10412905.2002.9699887

Shen, 2002, Use of adsorbent and supercritical carbon dioxide to concentrate flavor compounds from orange oil., J. Agric. Food Chem., 50, 154, 10.1021/jf010582j

Singh, 2010, Chemical profile, antifungal, antiaflatoxigenic and antioxidant activity of Citrus maxima Burm., and Citrus sinensis (L.) Osbeck essential oils and their cyclic monoterperne, DL-limonene., Food Chem. Toxicol., 48, 1734, 10.1016/j.fct.2010.04.001

Smadja, 2005, Volatile constituents of five Citrus petitgrain essential oils from Reunion., Flavour Frag. J., 20, 399, 10.1002/ffj.1438

Song, , Quantitative determination and characteristic flavour of daidai (Citrus aurantium L. var. cyathifera Y. Tanaka) peel oil., Flavour Frag. J., 15, 323, 10.1002/1099-1026(200009/10)15:5<323::AID-FFJ918>3.0.CO;2-J

Song, , Quantitative determination and characteristic flavour of Citrus junos (yuzu) peel oil., Flavour Frag. J., 15, 245, 10.1002/1099-1026(200007/08)15:4<245::AID-FFJ904>3.0.CO;2-V

Spadaro, 2012, Volatile fraction composition and biological activity of lemon oil (Citrus limon L. Burm.): comparative study of oils extracted from conventionally grown and biological fruits., J. Essent. Oil Res., 24, 187, 10.1080/10412905.2012.659518

Sun, 2018, Effect of oxygen and heating on aromas of pummelo (Citrus maxima) essential oil., J. Essent. Oil Res., 30, 92, 10.1080/10412905.2017.1420553

Sun, , Sensory evaluation and gas chromatography-mass spectrometry (GC-MS) analysis of the volatile extracts of pummelo (Citrus maxima) peel., Flavour Frag. J., 29, 305, 10.1002/ffj.3206

Sun, , Investigation of sunlight-induced deterioration of aroma of pummelo (Citrus maxima) essential oil., J. Agric. Food Chem., 62, 11818, 10.1021/jf504294g

Tanaka, 1954, Species Problem in Citrus, a Critical Study of Wild and Cultivated Units of Citrus, Based Upon Field Studies in Their Native Homes.

Tao, 2014, Anti-fungal activity of Citrus reticulata Blanco essential oil against Penicillium italicum and Penicillium digitatum., Food Chem., 153, 265, 10.1016/j.foodchem.2013.12.070

Tomi, 2008, Chemical variability of the leaf oil of 113 hybrids from Citrus clementina (Commun) x Citrus deliciosa (Willow Leaf)., Flavour Frag. J., 23, 152, 10.1002/ffj.1867

Tomiyama, 2012, Characteristic volatile components of Japanese sour citrus fruits: Yuzu, Sudachi and Kabosu., Flavour Frag. J., 27, 341, 10.1002/ffj.3104

Tranchida, 2012, Analysis of Citrus essential oils: state of the art and future perspectives. A review., Flavour Frag. J., 27, 98, 10.1002/ffj.2089

Uysal, 2011, Essential oil composition and antibacterial activity of the grapefruit (Citrus paradisi L.) peel essential oils obtained by solvent-free microwave extraction: comparison with hydrodistillation., Int. J. Food Sci. Tech., 46, 1455, 10.1111/j.1365-2621.2011.02640.x

Vekiari, 2004, Composition of the leaf and peel oils of Citrus medica L ’Diamante’ from Crete., J. Essent. Oil Res., 16, 528, 10.1080/10412905.2004.9698789

Vekiari, 2002, Composition and seasonal variation of the essential oil from leaves and peel of a Cretan lemon variety., J. Agric. Food Chem., 50, 147, 10.1021/jf001369a

Venturini, 2014, Volatile and flavonoid composition of the peel of Citrus medica L. var. Corsican fruit for quality assessment of its liqueur., Food Technol. Biotechnol., 52, 403, 10.17113/ftb.52.04.14.3717

Verzera, 2001, Influence of cultivar on lemon oil composition., J. Essent. Oil Res., 13, 343, 10.1080/10412905.2001.9712228

Verzera, 2004, Biological lemon and sweet orange essential oil composition., Flavour Frag. J., 19, 544, 10.1002/ffj.1348

Verzera, 2003, Effects of rootstock on the composition of bergamot (Citrus bergamia Risso et Poiteau) essential oil., J. Agric. Food Chem., 51, 206, 10.1021/jf0206872

Verzera, 2005, Essential oil composition of Citrus meyerii Y. Tan. and Citrus medica L. cv. Diamante and their lemon hybrids., J. Agric. Food Chem., 53, 4890, 10.1021/jf047879c

Viuda-Martos, 2009, Chemical composition of mandarin (C. reticulata L.), grapefruit (C. paradisi L.), lemon (C. limon L.), and orange (C. sinensis L.) essential oils., J. Essent. Oil Bear. Plant, 12, 236, 10.1080/0972060X.2009.10643716

Wang, 2014, Comparative study on the volatiles in Citrus reticulata ’Dahongpao’ peel from the same plant and their antioxidant activities., J. Essent. Oil Bear. Plant, 17, 303, 10.1080/0972060X.2014.895162

Wu, 2018, Genomics of the origin and evolution of Citrus., Nature, 554, 10.1038/nature25447

Wu, 2013, Variation in the components and antioxidant activity of Citrus medica L. var. sarcodactylis essential oils at different stage of maturity., Ind. Crops Prod., 46, 311, 10.1016/j.indcrop.2013.02.015

Yu, 2009, Comparative analysis of volatile constituents in Citrus reticulata Blanco using GC-MS and alternative moving window factor analysis., J. Sep. Sci., 32, 3457, 10.1002/jssc.200900267

Zakaria, 2010, Analysis of major fragrant compounds from Citrus grandis flowers extracts., Sains Malays., 39, 565

Zhang, 2017, Comprehensive comparative analysis of volatile compounds in Citrus fruits of different species., Food Chem., 230, 316, 10.1016/j.foodchem.2017.03.040