• 1
    Woese K, Lange D, Boess C and Bogl KW, A comparison of organically and conventionally grown foods. Results of a review of the relevant literature. J Sci Food Agric 74:281293 (1997).
  • 2
    Siderer Y, Maquet A and Anklam E, Need for research to support consumer confidence in the growing organic food market. Trends Food Sci Technol 16:332343 (2005).
  • 3
    Lairon D, Nutritional quality and safety of organic food. A review. Agron Sustain Dev 30:3341 (2010).
  • 4
    Dangour AD, Dodhia SK, Hayter A, Allen E, Lock K and Uauy R, Nutritional quality of organic foods: a systematic review. Am J Clin Nutr 90:680685 (2009).
  • 5
    Brandt K, Leifert C, Sanderson R and Seal CJ, Agroecosystem management and nutritional quality of plant foods: the case of organic fruits and vegetables. Crit Rev Plant Sci 30:177197 (2011).
  • 6
    Hunter D, Foster M, McArthur JO, Ojha R, Petocz P and Samman S, Evaluation of the micronutrient composition of plant foods produced by organic and conventional agricultural methods. Crit Rev Food Sci Nutr 51:571582 (2011).
  • 7
    Rosen JD, A review of the nutritional claims made by proponents of organic foods. Compr Rev Food Sci Food Saf 9:270277 (2010).
  • 8
    Lima GPP and Vianello F, Review on the main differences between organic and conventional plant-based foods. Int J Food Sci Technol 46:113 (2011).
  • 9
    Kelly SD, Heaton K and Hoogewerff J, Tracing the geographical origin of food: the application of multi-element and multi-isotope analysis. Trends Food Sci Technol 16:555567 (2005).
  • 10
    Rossmann A, Determination of stable isotope ratios in food analysis. Food Rev Int 17:347381 (2001).
  • 11
    Shearer GB, Kohl DH and Commoner B, The precision of determinations of the natural abundance of nitrogen-15 in soils, fertilizers, and shelf chemicals. Soil Sci 118:308316 (1974).
  • 12
    Freyer HD and Aly AIM, Nitrogen-15 variations in fertilizer nitrogen. J Environ Qual 4:405406 (1974).
  • 13
    Kreitler CW, Nitrogen-isotope ratio studies of soils and groundwater nitrate from alluvial fan aquifers in Texas. J Hydrol 42:147170 (1979).
  • 14
    Choi WJ, Ro HM and Hobbie EA, Patterns of natural 15N in soils and plants from chemically and organically fertilized uplands. Soil Biol Biochem 35:14931500 (2003).
  • 15
    Kohl DH, Shearer GB and Commoner B, Variation of 15N in corn and soil following application of fertilizer nitrogen. Soil Sci Soc Am Proc 37:888892 (1973).
  • 16
    Bateman AS, Kelly SD and Jickells TD, Nitrogen isotope relationships between crops and fertilizer: implications for using nitrogen isotope analysis as an indicator of agricultural regime. J Agric Food Chem 53:57605765 (2005).
  • 17
    Del Amor FM, Navarro J and Aparicio PM, Isotopic discrimination as a tool for organic farming certification in sweet pepper. J Environ Qual 37:182185 (2008).
  • 18
    Sturm M, Kacjan-Marsic N and Lojen S, Can δ15N in lettuce tissues reveal the use of synthetic nitrogen fertiliser in organic production? J Sci Food Agric 91:262267 (2011).
  • 19
    Camin F, Moschella A, Miselli F, Parisi B, Versini G, Ranalli P, et al, Evaluation of markers for the traceability of potato tubers grown in organic versus conventional regime. J Sci Food Agric 87:13301336 (2007).
  • 20
    Rogers KM, Nitrogen isotopes as a screening tool to determine the growing regimen of some organic and nonorganic supermarket produce from New Zealand. J Agric Food Chem 56:40784083 (2008).
  • 21
    Sturm M and Lojen S, Nitrogen isotopic signature of vegetables from Slovenian market and its suitability as an indicator of organic production. Isot Environ Health Stud 47:214220 (2011).
  • 22
    Rapisarda P, Calabretta ML, Romano G and Intrigliolo F, Nitrogen metabolism components as a tool to discriminate between organic and conventional citrus fruits. J Agric Food Chem 53:26642669 (2005).
  • 23
    Rapisarda P, Camin F, Fabroni S, Perini M, Torrisi B and Intrigliolo F, Influence of different organic fertilizers on quality parameters and the δ15N, δ13C, δ2H, δ34S, and δ18O values of orange fruit (Citrus sinensis L. Osbeck). J Agric Food Chem 58:35023506 (2010).
  • 24
    Bateman AS, Kelly SD and Woolfe M, Nitrogen isotope composition of organically and conventionally grown crops. J Agric Food Chem 55:26642670 (2007).
  • 25
    Schmidt H-L, Rossmann A, Voerkelius S, Schniztler WH, Georgi M, Grassmann J, et al, Isotope characteristics of vegetables and wheat from conventional and organic production. Isot Environ Health Stud 41:223228 (2005).
  • 26
    Magkos F, Arvaniti F and Zampelas A, Organic food: nutritious food or food for thought? A review of the evidence. Int J Food Sci Nutr 54:357371 (2003).
  • 27
    Rosen CJ and Allan DL, Exploring the benefits of organic nutrient sources for crop production and soil quality. HortTechnology 17:422430 (2007).
  • 28
    De Nadai Fernandes EA, Tagliaferro FS, Azevedo-Filho A and Bode P, Organic coffee discrimination with INAA and data mining/KDD techniques: new perspectives for coffee trade. Accred Qual Assur 7:378387 (2002).
  • 29
    Ryan MH, Derrick JW and Dann PR, Grain mineral concentrations and yield of wheat grown under organic and conventional management. J Sci Food Agric 84:207216 (2004).
  • 30
    Worthington V, Nutritional quality of organic versus conventional fruits, vegetables and grains. J Altern Compl Med 7:161173 (2001).
  • 31
    Ordonez-Santos LE, Vazquez-Oderiz ML and Romero-Rodriguez MA, Micronutrient contents in organic and conventional tomatoes (Solanum lycopersicum L.). Food Sci Technol 46:15611568 (2011).
  • 32
    Gosling P, Hodge A, Goodlass G and Bending GD, Arbuscular mycorrhizal fungi and organic farming. Agric Ecosyst Environ 113:1735 (2006).
  • 33
    Gundersen V, Bechmann IE, Behrens A and Sturup S, Comparative investigation of concentrations of major and trace elements in organic and conventional Danish agricultural crops. 1. Onions (Allium cepa Hysam) and peas (Pisum sativum Ping Pong). J Agric Food Chem 48:60946102 (2000).
  • 34
    Laursen KH, Schjoerring JK, Olesen JE, Askegaard M, Halekoh U and Husted S, Multielemental fingerprinting as a tool for authentication of organic wheat, barley, faba bean, and potato. J Agric Food Chem 59:43854396 (2011).
  • 35
    Kelly DS and Bateman AS, Comparison of mineral concentration in commercially grown organic and conventional crops – tomatoes (Lycopersicon esculentum) and lettuces (Lactuca sativa). Food Chem 119:738745 (2010).
  • 36
    Zorb C, Langenkamper G, Betsche T, Niehaus K and Barsch A, Metabolite profiling of wheat grains (Triticum aestivum L.) from organic and conventional agriculture. J Agric Food Chem 54:83018306 (2006).
  • 37
    Zorb C, Niehaus K, Barsch A, Betsche T and Langenkamper G, Levels of compounds and metabolites in wheat ears and grains in organic and conventional agriculture. J Agric Food Chem 57:95559562 (2009).
  • 38
    Zorb C, Betsche T and Langenkamper G, Search for diagnostic proteins to prove authenticity of organic wheat grains (Triticum aestivum L.). J Agric Food Chem 57:29322937 (2009).
  • 39
    Rohlig R and Engel KH, Influence of the input system (conventional versus organic farming) on metabolite profiles of maize (Zea mays) kernels. J Agric Food Chem 58:30223030 (2010).
  • 40
    Chen P, Harnly JM and Lester GE, Flow injection mass spectral fingerprints demonstrate chemical differences in Rio red grapefruit with respect to year, harvest time, and conventional versus organic farming. J Agric Food Chem 58:45454553 (2010).
  • 41
    Struch R, Wine and cardiovascular disease. Food Res Int 333:219223 (2000).
  • 42
    Sun AY, Simonyi A and Sun GY, The ‘French paradox’ and beyond: neuroprotective effects of polyphenols. Free Radic Biol Med 324:314318 (2002).
  • 43
    Chassy AW, Bui L, Renaud ENC, Van Horn M and Mitchell AE, Three-year comparison of the content of antioxidant microconstituents and several quality characteristics in organic and conventionally managed tomatoes and bell peppers. J Agric Food Chem 54:82448252 (2006).
  • 44
    Mitchell AE, Hong Y-J, Koh E, Barret DM, Bryant DE, Ford Denison R, et al, Ten-year comparison of the influence of organic and conventional crop management practices on the content of flavonoids in tomatoes. J Agric Food Chem 55:61546159 (2007).
  • 45
    Ren H, Endo H and Hayashi T, Antioxidative and antimutagenic activities and polyphenol content of pesticide-free and organically cultivated green vegetables using water-soluble chitosan as a soil modifier and leaf surface spray. J Sci Food Agric 81:14261432 (2001).
  • 46
    Wang SY, Chen C-T, Sciarappa W, Wang CY and Camp MJ, Fruit quality, antioxidant capacity, and flavonoid content of organically and conventionally grown blueberries. J Agric Food Chem 56:57885794 (2008).
  • 47
    Raigon MD, Rodriguez-Burruezo A and Prohens J, Effects of organic and conventional cultivation methods on composition of eggplant fruits. J Agric Food Chem 58:68336840 (2010).
  • 48
    Rossetto MRM, Vianello F, Rocha SA and Lima GPP, Antioxidant substances and pesticide in parts of beet organic and conventional manure. Afr J Plant Sci 3:245253 (2009).
  • 49
    Carbonaro M, Mattera M, Nicoli S, Bergamo P and Cappeloni M, Modulation of antioxidant compounds in organic vs conventional fruit (peach, Prunus persica L., and pear, Pyrus communis L.). J Agric Food Chem 50:54585462 (2002).
  • 50
    Asami DK, Hong YJ, Barrett DM and Mitchell AE, Comparison of the total phenolic and ascorbic acid content of freeze-dried and air-dried marionberry, strawberry, and corn grown using conventional, organic, and sustainable agricultural practices. J Agric Food Chem 51:12371241 (2003).
  • 51
    Lima GPP, Rocha S, Takaki M, Ramos PRR and Ono EO, Comparison of polyamine, phenol and flavonoid contents in plants grown under conventional and organic methods. Int J Food Sci Technol 43:18381843 (2008).
  • 52
    Luthria D, Singh AP, Wilson T, Vorsa N, Banuelos GS and Vinyard BT, Influence of conventional and organic agricultural practices on the phenolic content in eggplant pulp: plant-to-plant variation. Food Chem 121:406411 (2010).
  • 53
    Hakkinen SH and Torronen AR, Content of flavonols and selected phenolic acids in strawberries and Vaccinium species: influence of cultivar, cultivation site and technique. Food Res Int 33:517524 (2000).
  • 54
    Vrcek IV, Bojic M, Zuntar I, Mendas G and Medic-Saric M, Phenol content, antioxidant activity and metal composition of Croatian wines deriving from organically and conventionally grown grapes. Food Chem 124:354361 (2011).
  • 55
    Mulero J, Pardo F and Zafrilla P, Antioxidant acitivity and phenolic composition of organic and conventional grapes and wines. J Food Compos Anal 23:569574 (2010).
  • 56
    Mulero J, Pardo F and Zafrilla P, Effect of principal polyphenolic components in relation to antioxidant activity in conventional and organic red wines during storage. Eur Food Res Technol 229:807812 (2009).
  • 57
    Vallverdú-Queralt A, Medina-Remón A, Casals-Ribes I, Amat M and Lamuela-Ramentós RM, A metabolomic approach differentiates between conventional and organic ketchups. J Agric Food Chem 59:1170311710 (2011).
  • 58
    Winter CK and Davies SF, Organic foods. J Food Sci 71:117124 (2006).
  • 59
    Daniel O, Meier MS, Schlatter J and Frischknecht P, Selected phenolic compounds in cultivated plants: ecologic functions, health implications, and modulation by pesticides. Environ Health Perspect 107:109114 (1999).
  • 60
    Grinder-Petersen L, Rasmussen SA, Bugel S, Jorgensen LV, Dragsted LO, Gundersend V, et al, Effect of diets based on foods from conventional versus organic production on intake and excretion of flavonoids and markers of antioxidative defense in humans. J Agric Food Chem 51:56715676 (2003).
  • 61
    Nielsen S, Mølgaard JP and Lærke PE, Growing potatoes: Four cultivars for consumption: Bintje, Asva, Nicola and Ukama. SP Report 16 (1997).
  • 62
    Jaffery EH, Brown AF, Kurilich AC, Keek AS, Matusheski N and Klein BP, Variation in content of bioactive components in broccoli. J Food Compos Anal 16:323330 (2003).
  • 63
    Busscher N, Kahl J, Andersen J-O, Huber M, Mergardt G, Doesburg P, et al, Standardization of the biocrystallization method for carrot samples. Biol Agric Hort 27:123 (2010).
  • 64
    Huber M, Andersen J-O, Kahl J, Busscher N, Doesburg P, Mergardt G, et al, Standardization and validation of the visual evaluation of biocrystallizations. Development of a reliable and valid instrument for visual evaluation according to ISO-Norms for sensory analyses. Biol Agric Hort 27:2540 (2010).
  • 65
    Andersen J-O, Henriksen CB, Laursen J and Nielsen AA, Computerised image analysis of biocrystallograms. Comput Electron Agric 22:5169 (1999).
  • 66
    Kahl J, Busscher N and Ploeger A, Questions on the Validation of Holistic Methods of Testing Organic Food Quality. Biol Agric Hortic 27:8194 (2010).
  • 67
    Balzer-Graf U, Vital Quality – Quality Research with Picture Forming Methods. Forschungsinstitut für Vitalqualitat, Frick (2000).
  • 68
    Szulc M, Kahl J, Busscher N, Mergardt G, Doesburg P and Ploeger A, Discrimination between organically and conventionally grown winter wheat farm pair samples using the copper chloride crystallisation method in combination with computerised image analysis. Comput Electron Agric 74:218222 (2010).
  • 69
    Kahl J, Busscher N, Mergardt G, Mader P, Dubois D and Ploeger A, Authentication of organic wheat samples from long-term trial using biocrystallization. Proc. Second Scientific Conf. of International Society of Organic Agriculture Research (ISOFAR), Modena, (2008) (
  • 70
    Bortoleto GG, De Nadai Fernandes, EA, Tagliaferro FS, Ferrari AA and Bueno MIMS, Potential of X-ray spectrometry and chemometrics to discriminate organic from conventional grown agricultural products. Proc. Second Scientific Conf. of International Society of Organic Agriculture Research (ISOFAR), Modena, pp. 000000 (2008) (
  • 71
    Putzig CL, Leugers MA, McKelvy ML, Mitchell GE, Nyquist RA, Papenfuss RR, et al, Infrared spectroscopy. Anal Chem 66:2666 (1994).
  • 72
    Cozzolino D, Holdstock M, Dambergs RG, Cynkar WU and Smith PA, Mid infrared spectroscopy and multivariate analysis: a tool to discriminate between organic and non-organic wines grown in Australia. Food Chem 116:761765 (2009).
  • 73
    Van Ruth SM, Espinosa Guerri J and Alewijn M, Orange juice authentication: typicality, organic production and geographical origin, in Advances and Challenges in Flavor Chemistry and Biology, ed. by Hofmann T, Meyerhof W and Schieberle P. Deutsche Forschungsanstalt für Lebensmittelchemie, Freising, pp. 417420 (2011).
  • 74
    Camin F, Perini M, Bontempo L, Fabroni S, Faedi W, Magnani S, et al, Potential isotopic and chemical markers for characterising organic fruits. Food Chem 125:10721082 (2011).
  • 75
    Van Dijk JP, Cankar K, Scheffer SJ, Beenen HG, Shepherd LVT, Stewart D, et al, Transcriptome analysis of potato tubers – effects of different agricultural practices. J Agric Food Chem 57:16121623 (2009).
  • 76
    Lu C, Hawkesford MJ, Barraclough PB, Poulton PR, Wilson ID, Barker GL, et al, Markedly different gene expression in wheat grown with organic or inorganic fertilizer. Proc Biol Sci 272:19011908 (2005).
  • 77
    Van Dijk JP, Cankar K, Hendriksen PJM, Beenen HG, Zhu M, Scheffer SJ, et al, The identification and interpretation of differences in the transcriptomes of organically and conventionally grown potato tubers. J Agric Food Chem 60:20902101 (2012).
  • 78
    Hoefkens C, Vandekinderen I, De Meulenaer B, Devlieghere F, Baert K, Sioen I, et al, A literature-based comparison of nutrient and contaminant contents between organic and conventional vegetables and potatoes. Br Food J 111:10781097 (2009).
  • 79
    Schmidt H-L, Rossmann A, Rummel S and Tanz N, Stable isotope analysis for meat authenticity and origin check, in Handbook of Muscle Food Analysis, ed. by Nollet L and Toldra PV. CRC Press/Taylor and Francis, Boca Raton, FL, pp. 767787 (2008).
  • 80
    O'Leary MH, Carbon isotope fractionation in plants. Phytochemistry 20:553567 (1981).
  • 81
    Piasentier E, Valusso R, Camin F and Versini G, Stable isotope ratio analysis for authentication of lamb meat. Meat Sci 64:239247 (2003).
  • 82
    Boner M and Förstel H, Stable isotope variation as a tool to trace the authenticity of beef. Anal Bioanal Chem 378:301310 (2004).
  • 83
    Schmidt O, Quilter JM, Bahar B, Moloney AP, Scrimgeour CM, Begley IS, et al, Inferring the origin and dietary history of beef from C, N and S stable isotope ratio analysis. Food Chem 91:545549 (2005).
  • 84
    Bahar B, Schmidt O, Moloney AP, Scrimgeour CM, Begley IS and Monahan FJ, Seasonal variation in the C, N and S stable isotope composition of retail organic and conventional Irish beef. Food Chem 106:12991305 (2008).
  • 85
    Bahar B, Moloney AP, Monahan FJ, Harrison SM, Zazzo A, Scrimgeour CM, et al, Turnover of carbon, nitrogen, and sulfur in bovine longissimus dorsi and psoas major muscles: implications for isotopic authentication of meat. J Anim Sci 87:905913 (2009).
  • 86
    Wood JD and Enser M, Factors influencing fatty acids in meat and the role of antioxidants in improving meat quality. Br J Nutr 78:S49S60 (1997).
  • 87
    Wood JD, Richardson RI, Nute GR, Fisher AV, Campo MM, Kasapidou E, et al, Effects of fatty acids on meat quality: a review. Meat Sci 66:2132 (2003).
  • 88
    Aurousseau B, Bauchart D, Calichon E, Micol D and Priolo A, Effect of grass or concentrate feeding systems and rate of growth on triglyceride and phospholipid and their fatty acids in the M. longissimus thoracis of lambs. Meat Sci 66:531541 (2004).
  • 89
    Hawke JC, Lipids, in Chemistry and Biochemistry of Herbage, ed. by Butler GW and Bailey RW. Academic Press, London, pp. 213263 (1973).
  • 90
    Nuernberg K, Nuernberg G, Ender K, Lorenz S, Winkler K, Rickert R, et al, ω-3 fatty acids and conjugated linoleic acids of longissimus muscle in beef cattle. Eur J Lipid Sci Technol 104:463471 (2002).
  • 91
    Dannenberg D, Nuernberg K, Nuernberg G, Scollan N, Steinhart S and Ender K, Effect of pasture vs. concentrate diet on CLA isomer distribution in different tissue lipids of beef cattle. Lipids 40:589598 (2005).
  • 92
    Enser M, Hallet KG, Hewett B, Fursey GAJ, Wood JD and Harrington G, Fatty acid content and composition of UK beef and lamb muscle in relation to production system and implications for human nutrition. Meat Sci 49:329341 (1998).
  • 93
    Angood KM, Wood JD, Nute GR, Whittington FM, Hughes SI and Sheard PR, A comparison between organic and conventional-produced lamb purchased from three major UK supermarkets: price, eating quality and fatty acid composition. Meat Sci 78:176184 (2008).
  • 94
    Pla M, Hernández P, Ariño B, Ramírez JA and Díaz I, Prediction of fatty acid content in rabbit meat and discrimination between conventional and organic production systems by NIRS methodology. Food Chem 100:165170 (2007).
  • 95
    Kim DH, Seong PN, Cho SH, Kim JH, Lee JM, Jo C, et al, Fatty acid composition and meat quality traits of organically reared Korean native black pigs. Livest Sci 120:96102 (2009).
  • 96
    Perez-Palacios T, Ruiz J, Tejeda JF and Antequera T, Subcutaneous and intramuscular lipid traits as tools for classifying Iberian pigs as a function of their feeding background. Meat Sci 81:632640 (2009).
  • 97
    Husak RL, Sebranek JG and Bregendhal K, A survey of commercially available broilers marketed as organic, free-range and conventional broilers for cooked meat yields, meat composition, and relative value. Poultry Sci 87:23672376 (2008).
  • 98
    Castellini C, Mugnai C and Dal Bosco A, Effect of organic production system on broiler carcass and meat quality. Meat Sci 60:219225 (2002).
  • 99
    Arce L, Dominguez-Vidal A, Rodriguez-Estevez V, Lopez-Vidal S, Ayora-Canada MJ and Valcarcel M, Feasibility study on the use of infrared spectroscopy for the direct authentication of Iberian pig fattening diet. Anal Chim Acta 636:183189 (2009).
  • 100
    Bollen M, Perez R, Koot A and van Ruth SM, Authentication of traditional, dry-cured hams: volatile organic compounds measured by PTR-MS, in Proceedings of 4th International Conference on Proton Transfer Reaction Mass Spectrometry and Its Applications, ed. by Hansel A and Dunkl J. Innsbruck University Press, Innsbruck, pp. 303307 (2009).
  • 101
    Kelly M, Tarbin JA, Ashwin H and Sharman M, Verification of compliance with organic meat production standards by detection of permitted and non-permitted uses of veterinary medicine (tetracycline antibiotics). J Agric Food Chem 54:15231529 (2006).
  • 102
    DeNiro MJ and Epstein S, Influence of diet on the distribution of carbon isotope ratios in animals. Geochim Cosmochim Acta 42:495506 (1978).
  • 103
    DeNiro MJ and Epstein S, Influence of diet on the distribution of nitrogen isotopes in animals. Geochim Cosmochim Acta 45:341351 (1981).
  • 104
    Peterson BJ and Fry B, Stable isotopes in ecosystem studies. Annu Rev Ecol Syst 18:293320 (1987).
  • 105
    Knobbe N, Vogl J, Pritzkow W, Panne U, Fry H, Lochotzke HM, et al, C and N stable isotope variation in urine and milk of cattle depending on the diet. Anal Bioanal Chem 386:104108 (2006).
  • 106
    Kornexl BE, Werner T, Rossmann A and Schmidt HL, Measurement of stable isotope abundances in milk and milk ingredients as a possible tool for origin assignment and quality control. Z Lebensm Unters Forsch A 205:1924 (1997).
  • 107
    Molkentin J and Giesemann A, Differentiation of organically and conventionally produced milk by stable isotope and fatty acids. Anal Bioanal Chem 388:297305 (2007).
  • 108
    Molkentin J, Authentication of organic milk using δ13C and the α-linolenic acid content of milk fat. J Agric Food Chem 57:785790 (2009).
  • 109
    Molkentin J and Giesemann A, Follow-up of stable isotope analysis of organic versus conventional milk. Anal Bioanal Chem 398:14931500 (2010).
  • 110
    Yoneyama T, Kouno K and Yazaka J, Variation of natural 15N abundance of crops and soils in Japan with special reference to the effect of soil conditions and fertilizer application. Soil Sci Plant Nutr 36:667675 (1990).
  • 111
    Steinberg D, Herndon Jr JH, Uhlendorf B, Mize CE, Avigan J and Milne GWA, Refsum's disease: nature of the enzyme defect. Science 156:17401742 (1967).
  • 112
    Schröder M, Yousefi F and Vetter W, Investigating the day-to-day variations of potential marker fatty acids for organic milk in milk from conventionally and organically raised cows. Eur Food Res Technol 232:167174 (2010).
  • 113
    Vetter W and Schröder M, Concentrations of phytanic acid and pristanic acid are higher in organic than in conventional dairy products from the German market. Food Chem 119:746752 (2010).
  • 114
    Schröder M and Vetter W, GC/EI-MS determination of the diastereomer distribution of phytanic acid in food samples. J Am Oil Soc 88:341349 (2011).
  • 115
    Hungate RE, Methane formation and cellulose digestion – biochemical ecology and microbiology of the rumen ecosystem. Experientia 38:189192 (1982).
  • 116
    Windham WR and Akin DE, Rumen fungi and forage fiber degradation. Appl Environ Microbiol 48:473476 (1984).
  • 117
    Bergamo P, Fedele E, Iannibelli L and Marzillo G, Fat-soluble vitamin contents and fatty acid composition in organic and conventional Italian dairy products. Food Chem 82:625631 (2003).
  • 118
    Butler G, Stergiadis S, Seal C, Eyre M and Leifert C, Fat composition of organic and conventional retail milk in northeast England. J Dairy Sci 94:2436 (2011).
  • 119
    Adler S, Dahl AV, Vae AH, Thuen E, Garmo T, Krogh-Jensen S, et al, Effect of pasture botanical composition on milk composition in organic production, in Grassland Science in Europe, Vol. 15, ed. by Schnyder H, Isselstein J, Taube F, Auerswald K, Schellberg J, Wachendorf M, et al, European Grassland Federation, Zurich, pp. 425427 (2010).
  • 120
    Butler G, Nielsen JH, Slots T, Seal C, Eyre MD, Sanderson R, et al, Fatty acid and fat-soluble antioxidant concentrations in milk from high- and low-input conventional and organic systems: seasonal variation. J Sci Food Agric 88:14311441 (2008).
  • 121
    Ellis KA, Innocent G, Grove-White D, Cripps P, McLean WG, Howard CV, et al, Comparing the fatty acid composition of organic and conventional milk. J Dairy Sci 89:19381950 (2006).
  • 122
    Prandini A, Sigolo S and Piva G, Conjugated linoleic acid (CLA) and fatty acid composition of milk, curd and Grana Padano cheese in conventional and organic farming systems. J Dairy Res 76:278282 (2009).
  • 123
    O'Donnell AM, Spatny KP, Vicini JL and Bauman DE, Survey of the fatty acid composition of retail milk differing in label claims based on production management practices. J Dairy Sci 93:19181925 (2010).
  • 124
    Mansbridge RJ and Blake JS, Nutritional factors affecting the fatty acid composition of bovine milk. Br J Nutr 78:S37S47 (1997).
  • 125
    Collomb M, Bisig W, Bütikofer U, Sieber R, Bregy M and Etter L, Fatty acid composition of mountain milk from Switzerland: comparison of organic and integrated farming systems. Int Dairy J 18:976982 (2008).
  • 126
    Fall N and Emanuelson U, Fatty acid content, vitamins and selenium in bulk tank milk from organic and conventional Swedish dairy herds during the indoor season. J Dairy Res 78:287292 (2011).
  • 127
    Butler G, Collomb M, Rehberger B, Sanderson R, Eyre M and Leifert C, Conjugated linoleic acid isomer concentrations in milk from high- and low-input management dairy systems. J Sci Food Agric 89:697705 (2009).
  • 128
    Collomb M, Schmid A, Sieber R, Wechsler D and Ryhanen EL, Conjugated linoleic acids in milk fat: variation and physiological effects. Int Dairy J 16:13471361 (2006).
  • 129
    Wahle KWJ, Heys SD and Rotondo D, Conjugated linoleic acids: are they beneficial or detrimental to health? Prog Lipid Res 43:553587 (2004).
  • 130
    Lock AL and Bauman DE, Modifying milk fat composition of dairy cows to enhance fatty acids beneficial to human health. Lipids 39:11971206 (2004).
  • 131
    Khanal RC, Dhiman TR and Boman RL, Changes in fatty acid composition of milk from lactating dairy cows during transition to and from pasture. Livest Sci 114:164175 (2008).
  • 132
    Elgersma A, Tamminga S and Ellen G, Modifying milk composition through forage. Anim Feed Sci Technol 131:207225 (2006).
  • 133
    Popović-Vranješ A, Savić M, Pejanović R, Jovanović S and Krajinović G, The effect of organic milk production on certain milk quality parameters. Acta Vet Beograd 61:415421 (2011).
  • 134
    Bloksma J, Adriaansen-Tennekes R, Huber M, van de Vijver LPL, Baars T and de Wit J, Comparison of organic and conventional raw milk quality in the Netherlands. Biol Agric Hort 26:6983 (2008).
  • 135
    Precht D, Variation of trans fatty acids in milk fat. Z Ernahrungswiss 34:2729 (1995).
  • 136
    Dewhurst RJ, Shingfield KJ, Lee MRF and Scollan ND, Increasing the concentrations of beneficial polyunsaturated fatty acids in milk produced by dairy cows in high-forage systems. Anim Feed Sci Technol 131:168206 (2006).
  • 137
    Rogers KM, Stable isotopes as a tool to differentiate eggs laid by caged, barn, free range, and organic hens. J Agric Food Chem 57:42364242 (2009).
  • 138
    Samman S, Chow JWY, Foster MJ, Ahmad ZI, Phuyal JL and Petocz P, Fatty acid composition of edible oils derived from certified organic and conventional agricultural methods. Food Chem 109:670674 (2008).
  • 139
    Cherian G, Holsonbake TB and Goeger MP, Fatty acid composition and egg components of specialty eggs. Poultry Sci 81:3033 (2002).
  • 140
    Hidalgo A, Rossi M, Clerici F and Ratti S, A market study on the quality characteristics of eggs from different housing systems. Food Chem 106:10311038 (2008).
  • 141
    Tres A, O'Neil R and van Ruth SM, Fingerprinting of fatty acid composition for the verification of the identity of organic eggs. Lipid Technol 23:4042 (2011).
  • 142
    Krinsky NI and Johnson EJ, Carotenoid actions and their relation to health and disease. Mol Aspect Med 26:459516 (2005).
  • 143
    Mugnai C, Dal Bosco A and Castellini C, Effect of rearing system and season on the performance and egg characteristics of Ancona laying hens. Ital J Anim Sci 8:175188 (2009).
  • 144
    Regulation (EC) 1831/2003 of the European Parliament and of the Council of 22 September 2003 on additives for use in animal nutrition. [Online]. (2009). Available:
  • 145
    Na J-C, Song J-Y, Lee B-D, Lee S-J, Lee C-Y and An G-H, Effect of polarity on absorption and accumulation of carotenoids by laying hens. Anim Feed Sci Technol 117:305315 (2004).
  • 146
    Lambing K, Nutzung der ‘low-level-Luminescence’-Meßtechnik zur Untersuchung von Lebensmitteln. Dissertation, University of Kaiserslautern (1992).
  • 147
    Schlatterer J and Breithaupt DE, Xanthophylls in commercial egg yolks: quantification and identification by HPLC and LC–(APCI)MS using a C30 phase. J Agric Food Chem 54:22672273 (2006).
  • 148
    Van Ruth SM, Alewijn M, Rogers K, Newton-Smith E, Tena N, Bollen M, et al, Authentication of organic and conventional eggs by carotenoid profiling. Food Chem 129:12991305 (2011).
  • 149
    Van Ruth SM, Koot A, Brouwer E, Boivin N, Carcea M, Zerva C, et al, Eggspectation: organic egg authentication method challenged with produce from ten different countries. Qual Assur Saf Crops Foods (In Press).
  • 150
    Molkentin J, Meisel H, Lehmann I and Rehbein H, Identification of organically farmed Atlantic salmon by analysis of stable isotopes and fatty acids. Eur Food Res Technol 224:535543 (2007).
  • 151
    Xiccato G, Trocino A, Tulli F and Tibaldi E, Prediction of chemical composition and origin identification of European sea bass (Dicentrarchus labrax L.) by near infrared reflectance spectroscopy (NIRS). Food Chem 86:275281 (2004).
  • 152
    Majolini M, Trocino A, Xiccato G and Santulli A, Near infrared reflectance spectroscopy (NIRS) characterization of European sea bass (Dicentrarchus labrax) from different rearing systems. Ital J Anim Sci 8(Suppl. 2):860862 (2009).
  • 153
    Trocino A, Xiccato G, Majolini D, Tazzoli M, Bertotto D, Pascoli F, et al, Assessing the quality of organic and conventionally-farmed European sea bass (Dicentrarchus labrax). Food Chem 131:427433 (2012).