Maja MIKULIC PETKOVSEK, Robert VEBERIC, Natasa SINK, Nina KACJAN MARSIC

Chemical composition and morphometric traits and yield of carrots grown in organic and integrated farming systems

Changes in chemical composition and quality traits of carrot roots (Daucus carota L.) grown in organic (ORG) andintegrated (INT) farming systems were investigated during two successive years. Three carrot cultivars (Fanal, Rodelika,and Rolanka) were included. Determinations of sugars, organic acids, α- and β-carotene, and vitamin C were performedwith an HPLC system, and a liquid chromatography-mass spectrometry (LC-MS) system was used for the identificationand quantification of phenolics. A higher yield of carrot in the ORG system was observed (42–44 t ha–1) as comparedwith the INT system (37–40 t ha–1). The impact of farming system on morphometric traits was cultivar-specific. Thecomposition of sugars and carotenes was determined using compositional data analysis. The relative amount of sucroseagainst the combined amount of fructose and glucose was higher for roots from the ORG system compared to the INTsystem and for roots of Rodelika compared to Fanal. Roots from ORG farming contained 1.6-fold higher content of malicacid in Fanal and Rolanka and 2.4-fold in Rodelika compared to the INT system. Organic farming increased the content ofvitamin C by 5% in roots of Rodelika, 15% in roots of Rolanka, and 22% in roots of Fanal compared to the INT farming.Changes in carotenes content in carrot roots were cultivar-specific with significantly higher α- and β-carotene contents inRodelika and Rolanka compared to Fanal. Farming system influenced the ratio of β-car/α-car, which was higher for rootsgathered from the INT system (1.9) compared to ORG system (1.7), but the differences were not significant. Phenolicacids detected in the study differed significantly in relation to cultivar as revealed by lower concentrations in the roots ofRodelika and Fanal compared with higher levels in the roots of Rolanka.

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Alasalvar C, Al-Farsi M, Quantick PC, Shahidi F, Wiktorowicz R (2005). Effect of chill storage and modified atmosphere packaging (MAP) on antioxidant activity, anthocyanins, carotenoids, phenolics and sensory quality of ready-to-eat shredded orange and purple carrots. Food Chem 89: 69-76.
Bavec M, Turinek M., Grobelnik-Mlakar S, Slatnar A, Bavec F (2010). Influence of Industrial and alternative farming systems on contents of sugars, organic acids, total phenolic content, and the antioxidant activity of red beet (Beta vulgaris L. spp. vulgaris Rote Kugel). J Agr Food Chem 58: 11825-11831.
Bourn D, Prescott J (2002). A comparison of the nutritional value, sensory qualities, and food safety of organically and conventionally produced foods. Crit Rev Food Sci Nutr 42: 1-34.
Brandt K, Molgaard JP (2001). Organic agriculture: does it enhance or reduce the nutritional value of plant foods? J Sci Food Agric 81: 924-931.
Chugahuja JK, Holden JM, Forman MR, Mangels AR, Beecher GR, Lanza E (1993). The development and application of a carotenoid database for fruits, vegetables, and selected multicomponent foods. J Am Diet Assoc 93: 318-323.
Dimitri C, Oberholtzer L (2009). Meeting market demand in the organic sector: handler-supplier relationships in the face of tight supply. Renew Agr Food Syst 24: 137-145.
Dorais M, Alsanius BW (2016). Recent advances in organic horticulture technology and management. Sci Hortic 208: 1-2.
Eur-Lex (2007). Council Regulation (EC) No 834/2007 of 28 June 2007 on Organic Production and Labelling of Organic Products and Repealing Regulation (EEC) No 2092/91. Brussels, Belgium: Eur-Lex.
Eur-Lex (2014). Opinion of the European Economic and Social Committee on ‘Integrated Production in the European Union’ (Own-Initiative Opinion). Brussels, Belgium: Eur-Lex.
Gajewski M, Szymczak P, Bajer M (2009). The accumulation of chemical compounds in storage roots by carrots of different cultivars during vegetation period. Acta Sci Pol-Hortorum Cultus 8: 69-78.
Goncalves EM, Pinheiro J, Abreu M, Brandao TRS, Silva CLM (2010). Carrot (Daucus carota L.) peroxidase inactivation, phenolic content and physical changes kinetics due to blanching. J Food Eng 97: 574-581.
Gutser R, Ebertseder T, Weber A, Schraml M, Schmidthalter U (2005). Short-term and residual availability of nitrogen after long-term application of organic fertilizer on arable land. J Plant Nutr Soil Sci 168: 439-446.
Karkleliene R, Radzevicius A, Dambrauskiene E, Surviliene E, Bobinas C, Duchovskiene L, Kavaliauskaite D, Bundiniene O (2012). Root yield, quality and disease resistance of organically grown carrot (Daucus sativus Rohl.) hybrids and cultivars. Zemdirbyste 99: 393-398.
Krook J, Vreugdenhil D, van der Plas LHW (2000). Uptake and phosphorylation of glucose and fructose in Daucus carota cell suspensions are differently regulated. Plant Physiol Biochem 38: 603-612.
Mader P, Fliessbach A, Dubois D, Gunst L, Fried P, Niggli U (2002). Soil fertility and biodiversity in organic farming. Science 296: 1694-1697.
Maggio A, De Pascale S, Paradiso R, Barbieri G (2013). Quality and nutritional value of vegetables from organic and conventional farming. Sci Hortic 164: 532-539.
Mikulic-Petkovsek M, Schmitzer V, Slatnar A, Stampar F, Veberic R (2012). Composition of sugars, organic acids, and total phenolics in 25 wild or cultivated berry species. J Food Sci 77: C1064-C1070.
Mikulic-Petkovsek M, Stampar F, Veberic R (2007). Parameters of inner quality of the apple scab resistant and susceptible apple cultivars (Malus domestica Borkh.). Sci Hortic 114: 37-44.
Mizrahi A, Knekt P, Montonen J, Laaksonen MA, Heliovaara M, Jarvinen R (2009). Plant foods and the risk of cerebrovascular diseases: a potential protection of fruit consumption. Br J Nutr 102: 1075-1083.
Nicolle C, Simon G, Rock E, Amouroux P, Remesy C (2004). Genetic variability influences carotenoid, vitamin, phenolic, and mineral content in white, yellow, purple, orange, and darkorange carrot cultivars. J Am Soc Hortic Sci 129: 523-529.
Orsini F, Maggio A, Rouphael Y, De Pascale S (2016). “Physiological quality” of organic grown vegetables. Sci Hortic 208: 131-139.
Paoletti F, Raffo A, Kristensen HL, Thorup-Kristensen K, Seljasen R, Torp T, Busscher N, Ploeger A, Kahl J (2012). Multi-method comparison of carrot quality from a conventional and three organic cropping systems with increasing levels of nutrient recycling. J Sci Food Agric 92: 2855-2869.
Pawlowsky-Glahn V, Buccianti A (2011). Compositional Data Analysis: Theory and Applications. Oxford, UK: Blackwell Science.
Phatak SC (1992). An integrated sustainable vegetable production system. HortScience 27: 738-741.
Ponisio LC, M’Gonigle LK, Mace KC, Palomino J, de Valpine P, Kremen C (2015). Diversification practices reduce organic to conventional yield gap. Proc R Soc 282: 1396.
RDC Team (2011). R: A Language and Environment for Statistical Computing. Vienna, Austria: R Foundation for Statistical Computing.
Reganold JP, Wachter JM (2016). Organic agriculture in the twentyfirst century. Nat Plant 2: 15221.
Reinsaat (2016). Gemüse-, Kräuter- und Blumensaatgut aus biologisch-dynamischem und organisch-biologischem Anbau. St. Leonhard am Hornerwald, Austria: Reinsaat.
Rodriguez-Amaya DB (2010). Quantitative analysis, in vitro assessment of bioavailability and antioxidant activity of food carotenoids-A review. J Food Compos Anal 23: 726-740.
Röhlig RM, Engel K (2010). Influence of the system (conventional versus organic farming) on metabolite profiles of maize (Zea mays) kernels. J Agric Food Chem 58: 3022-3030.
Rosen CJ, Allan DL (2007). Exploring the benefits of organic nutrient sources for crop production and soil quality. HortTechnology 17: 422-430.
Rosenfeld HJ (1998). Maturity and development of the carrot root (Daucus carota L.). Gartenbauwissenschaft 63: 87-94.
Singh DP, Beloy J, McInerney JK, Day L (2012). Impact of boron, calcium and genetic factors on vitamin C, carotenoids, phenolic acids, anthocyanins and antioxidant capacity of carrots (Daucus carota L.). Food Chem 132: 1161-1170.
Smolen S, Sady W (2009). The effect of various nitrogen fertilization and foliar nutrition regimes on the concentrations of sugars, carotenoids and phenolic compounds in carrot (Daucus carota L.). Sci Hortic 120: 315-324.
Soltoft M, Nielsen J, Lauren KH, Husted S, Halekoh U, Knuthsen P (2010). Effects of organic and conventional growth systems on the content of flavonoids in onions and phenolic acids in carrots and potatoes. J Agric Food Chem 58: 10323-10329.
Stange C, Fuentes P, Handford M, Pizarro L (2008). Daucus carota L. as a novel model to evaluate the effect of light on carotenogenic gene expression. Biol Res 41: 289-301.
Suojala T (2000). Variation in sugar content and composition of carrot storage roots at harvest and during storage. Sci Hortic 85: 1-19.
Taylor M, Ramsay G (2005). Carotenoid biosynthesis in plant storage organs: recent advances and prospects for improving plant food quality. Physiol Plant 124: 143-151.
Wang GL, Sun S, Xing GM, Wu XJ, Wang F, Xiong AS (2015). Morphological characteristics, anatomical structure, and gene expression: novel insights into cytokinin accumulation during carrot growth and development. PLoS One 10: e0134166.
Wang SY, Chen C, Sciarappa A, Wang CA, Camp MJ (2008). Fruit quality, antioxidant capacity, and flavonoid content of organically and conventionally grown blueberries. J Agric Food Chem 56: 5788-5794.
Wright KP, Kader AA (1997). Effect of controlled-atmosphere storage on the quality and carotenoid content of sliced persimmons and peaches. Postharvest Biol Technol 10: 89-97.
Zhang DL, Hamauzu Y (2004). Phenolic compounds and their antioxidant properties in different tissues of carrots (Daucus carota L.). J Food Agric Environ 2: 95-100.