Comparative Study of Sensory Attributes of Leafy Green Vegetables Grown Under Organic and Conventional Management


Kripa Dhakal, Ramasamy Ravi, Dilip Nandwani


Abstract


This study was carried out to compare the sensory qualities of leafy green vegetables (collard, kale, lettuce and swiss chard) grown under organic and conventional production systems. Four leafy greens were produced on an organically and conventionally managed research farm of Tennessee State University, Nashville, TN in Spring 2019 and 2020. Crops in a conventional field were grown in the open field, whereas in organic field crops were grown in the open and under three different row covers (agribon cloth, insect net and plastic). Row covers in organic systems were used to protect crops from insect damage. Plant samples were collected from all the treatments and evaluated for sensory qualities including color, texture, taste, odor and flavor following two approaches i.e., instrumental and via consumer panel perception. Consumer panel perception results showed minor differences in the sensory qualities between organic and inorganically produced leafy greens. Instrumental methods showed no differences in color parameters of kale, lettuce and swiss chard grown under organic and conventional production systems. In collard, the lightness (L*), b* (yellow-blue axis), brightness (Y) and chroma (C) values were higher in conventional, while hue angle was higher in organic (open). There were no differences in instrumental textural values of organically and conventionally grown leafy greens. Among row covers, the textural value of collard and kale was higher in open relative to row covers. The content of main quality contributors 1-Hexanol was higher in conventionally grown collard compared to organic (open). Aldehyde compound was higher in organically grown kale and trans-hex-2-enyl-acetate (Ester) compound was higher in conventionally grown kale. Monoterpenes were higher in organic lettuce and ketones were higher in conventionally grown lettuce. Overall, there were not many differences in the sensory qualities of leafy greens grown under organic and conventional production systems. Further comparative studies between organic and conventional systems on sensory qualities of leafy greens are needed.

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References


Brennan CS, Kuri V, Relationship between sensory attributes, hidden attributes and price in influencing consumer perception of organic foods. Proceedings of the UK Organic Research 2002 Conference; 2002: Organic Centre Wales, Institute of Rural Studies, University of Wales. p.65-68.

Lo M, Matthews D, Results of routine testing of organic food for agro-chemical residues. Proceedings of the UK organic research 2002 Conference; 2002: Organic Centre Wales, Institute of Rural Studies, University of Wales. p. 61-64.

Zhao X, Chambers IV E, Matta Z, Loughin TM, Carey EE, Consumer sensory analysis of organically and conventionally grown vegetables. Journal of food science. 2007;72(2):S87-S91.

Yiridoe EK, Bonti-Ankomah S, Martin RC, Comparison of consumer perceptions and preference toward organic versus conventionally produced foods: A review and update of the literature. Renewable agriculture and food systems. 2005;20(4):193-205.

Wier M, Jensen KOD, Andersen LM, Millock K, The character of demand in mature organic food markets: Great Britain and Denmark compared. Food Policy. 2008;33(5):406-21.

Schutz HG, Lorenz OA, Consumer preferences for vegetables grown under “commercial” and “organic” conditions. Journal of Food Science. 1976;41(1):70-3.

Talavera‐Bianchi M, Chambers IV E, Carey EE, Chambers DH, Effect of organic production and fertilizer variables on the sensory properties of pac choi (Brassica rapa var. Mei Qing Choi) and tomato (Solanum lycopersicum var. Bush Celebrity). Journal of the Science of Food and Agriculture. 2010;90(6):981-8.

Basker D, Comparison of taste quality between organically and conventionally grown fruits and vegetables. American Journal of Alternative Agriculture. 1992;7(3):129-36.

Bourn D, Prescott J, A comparison of the nutritional value, sensory qualities, and food safety of organically and conventionally produced foods. Critical reviews in food science and nutrition. 2002;42(1):1-34.

Abbott JA, Textural quality assessment for fresh fruits and vegetables. Quality of fresh and processed foods. 2004:265-79.

Løkke MM, Seefeldt HF, Edelenbos M, Freshness and sensory quality of packaged wild rocket. Postharvest Biology and Technology. 2012;73:99-106.

Fillion L, Kilcast D, Consumer perception of crispness and crunchiness in fruits and vegetables. Food quality and preference. 2002;13(1):23-9.

Szczesniak AS, The meaning of textural characteristics‐crispness. Journal of Texture Studies. 1988;19(1):51-9.

Barrett DM, Beaulieu JC, Shewfelt R, Color, flavor, texture, and nutritional quality of fresh-cut fruits and vegetables: desirable levels, instrumental and sensory measurement, and the effects of processing. Critical reviews in food science and nutrition. 2010;50(5):369-89.

Berna A, Metal oxide sensors for electronic noses and their application to food analysis. Sensors. 2010;10(4):3882-910.

Beghi R, Buratti S, Giovenzana V, Benedetti S, Guidetti R, Electronic nose and visible-near infrared spectroscopy in fruit and vegetable monitoring. Reviews in Analytical Chemistry. 2017;36(4).

Hatanaka A, The fresh green odor emitted by plants. Food Reviews International. 1996;12(3):303-50.

Belitz H-D, Grosch W, Schieberle P, Aroma compounds. Food chemistry: Springer; 2004. p. 342-408.

Lonchamp J, Barry-Ryan C, Devereux M, Identification of volatile quality markers of ready-to-use lettuce and cabbage. Food Research International. 2009;42(8):1077-86.

Fischer C, Scott T, Flavor compounds. Food fl flavors biology and chemistry. 1997:15e75.

Hodges DM, Toivonen PM, Quality of fresh-cut fruits and vegetables as affected by exposure to abiotic stress. Postharvest Biology and Technology. 2008;48(2):155-62.

Dhakal K, Nandwani D, Evaluation of row covers for yield performance of the leafy green vegetables in organic management system. Organic Agriculture. 2020;10:27-33.

Himelrick DG, Woods FM, Wilkins BS, Pitts JA, Use of floating row covers in annual hill plasticulture strawberries. Small Fruits Review. 2001;1(4):63-71.

Lee CA, Vickers ZM, Discrimination among astringent samples is affected by choice of palate cleanser. Food quality and preference. 2010;21(1):93-9.

Lappalainen R, Kearney J, Gibney M, A pan EU survey of consumer attitudes to food, nutrition and health: an overview. Food quality and Preference. 1998;9(6):467-78.

Verruma-Bernardi MR, Pimenta DM, Levrero GR, Forti VA, de Medeiros SD, Ceccato-Antonini SR, Yield and quality of curly kale grown using organic fertilizers. Horticultura Brasileira. 2021;39:112-21.

Crecente-Campo J, Nunes-Damaceno M, Romero-Rodríguez M, Vázquez-Odériz M, Color, anthocyanin pigment, ascorbic acid and total phenolic compound determination in organic versus conventional strawberries (Fragaria× ananassa Duch, cv Selva). Journal of Food Composition and Analysis. 2012;28(1):23-30.

Cortellino G, Gobbi S, Rizzolo A, Shelf life of fresh-cut lamb’s lettuce (Valerianella locusta L.) monitored by electronic nose and relationship with chlorophyll a fluorescence and mechanical-acoustic test. Postharvest biology and technology. 2018;136:178-86.

Szczesniak AS, Kahn EL, Texture contrasts and combinations: a valued consumer attribute. Journal of Texture Studies. 1984;15(3):285-301.

Vickers ZM, Pleasantness of food sounds. Journal of Food Science. 1983;48(3):783-6.

Toole G, Parker M, Smith A, Waldron K, Mechanical properties of lettuce. Journal of Materials Science. 2000;35(14):3553-9.

Riva M, Benedetti S, Mannino S, Shelf life of fresh cut vegetables as measured by an electronic nose. Preliminary study. Italian Journal of Food Science (Italy). 2001.

Gardner JW, Bartlett PN, A brief history of electronic noses. Sensors and Actuators B: Chemical. 1994;18(1-3):210-1.

Peng X, Yang J, Cui P, Chen F, Fu Y, Hu Y, Influence of allicin on quality and volatile compounds of fresh-cut stem lettuce during cold storage. LWT-Food Science and Technology. 2015;60(1):300-7.

Deza-Durand KM, Petersen MA, The effect of cutting direction on aroma compounds and respiration rate of fresh-cut iceberg lettuce (Lactuca sativa L.). Postharvest biology and technology. 2011;61(1):83-90.

Arey J, Winer AM, Atkinson R, Aschmann SM, Long WD, Morrison CL, The emission of (Z)-3-hexen-1-ol,(Z)-3-hexenylacetate and other oxygenated hydrocarbons from agricultural plant species. Atmospheric Environment Part A General Topics. 1991;25(5-6):1063-75.

Lopez-Galvez G, Peiser G, Nie X, Cantwell M, Quality changes in packaged salad products during storage. Zeitschrift für Lebensmitteluntersuchung und-Forschung A. 1997;205(1):64-72.

Copaciu F, Opriş O, Coman V, Ristoiu D, Niinemets Ü, Copolovici L, Diffuse water pollution by anthraquinone and azo dyes in environment importantly alters foliage volatiles, carotenoids and physiology in wheat (Triticum aestivum). Water, Air, & Soil Pollution. 2013;224(3):1-11.

Copolovici L, Kännaste A, Pazouki L, Niinemets Ü, Emissions of green leaf volatiles and terpenoids from Solanum lycopersicum are quantitatively related to the severity of cold and heat shock treatments. Journal of plant physiology. 2012;169(7):664-72.

Nielsen GS, Poll L, Determination of odour active aroma compounds in a mixed product of fresh cut iceberg lettuce, carrot and green bell pepper. Developments in Food Science. 43: Elsevier; 2006. p. 517-20.

He J, Verstappen F, Jiao A, Dicke M, Bouwmeester HJ, Kappers IF, Terpene synthases in cucumber (Cucumis sativus) and their contribution to herbivore‐induced volatile terpenoid emission. New Phytologist. 2021. https://doi.org/10.1111/nph.17814.

Mzoughi Z, Chahdoura H, Chakroun Y, Cámara M, Fernández-Ruiz V, Morales P, Wild edible Swiss chard leaves (Beta vulgaris L. var. cicla): Nutritional, phytochemical composition and biological activities. Food Research International. 2019;119:612-21.

Sparling E, Wilken K, McKenzie J, Marketing fresh produce in Colorado supermarkets. Report to Colorado Department of Agriculture and USDA Federate State Marketing Improvement Program, Fort Collins, Colorado, USA. 1992.

Jolly DA, Norris K, Marketing prospects for organic and pesticide-free produce. American Journal of Alternative Agriculture. 1991;6(4):174-9.

Tobin R, Moane S, Larkin T, Sensory evaluation of organic and conventional fruits and vegetables available to Irish consumers. International journal of food science & technology. 2013;48(1):157-62.

Gilsenan C, Burke R, Barry-Ryan C, O'Sullivan G, Pierce E, An Evaluation of the Sensory Properties of Irish Grown Organic and Conventional Carrots (Daucus carota L.) and mushrooms (Agaricus bisporus). 2008.

Estes EA, Herrera JE, Bender M, Organic produce sales within North Carolina: a survey of buyer opinions: Department of Agricultural and Resource Economics, North Carolina State University; 1994.

Woese K, Lange D, Boess C, Bögl KW, A comparison of organically and conventionally grown foods-results of a review of the relevant literature. Journal of the Science of Food and Agriculture. 1997;74(3):281-93.

Hornick SB, Factors affecting the nutritional quality of crops. American Journal of Alternative Agriculture. 1992;7(1-2):63-8.

Haglund Å, Johansson L, Berglund L, Dahlstedt L, Sensory evaluation of carrots from ecological and conventional growing systems. Food Quality and Preference. 1998;10(1):23-9.

Hanada T, The effect of mulching and row covers on vegetable production: ASPAC, Food & Fertilizer Technology; 1991.




DOI: https://doi.org/10.46676/ij-fanres.v2i3.52

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