Plant Foods for Human Nutrition

, Volume 66, Issue 1, pp 48–57 | Cite as

Characterization of Industrial Onion Wastes (Allium cepa L.): Dietary Fibre and Bioactive Compounds

  • Vanesa BenítezEmail author
  • Esperanza Mollá
  • María A. Martín-Cabrejas
  • Yolanda Aguilera
  • Francisco J. López-Andréu
  • Katherine Cools
  • Leon A. Terry
  • Rosa M. Esteban


The food industry produces a large amount of onion wastes, making it necessary to search for possible ways for their utilization. One way could be to use these onion wastes as a natural source of high-value functional ingredients, since onion are rich in several groups of compounds, which have perceived benefits to human health. The objective of this work is to gain knowledge of any differences between the different onion wastes obtained from industry and non-commercial bulbs to use them as food ingredients rich in specific compounds. The results showed that brown skin and top–bottom could be potentially used as functional ingredient rich in dietary fibre, mainly in insoluble fraction, and in total phenolics and flavonoids, with high antioxidant activity. Moreover, brown skin showed a high concentration of quercetin aglycone and calcium, and top–bottom showed high concentration of minerals. Outer scales could be used as source of flavonols, with good antioxidant activity and content of dietary fibre. However, inner scales could be an interesting source of fructans and alk(en)yl cystein sulphoxides. In addition, discarded onions (cvs Recas and Figueres) could be used as a good source of dietary fibre, and cv Recas also as a source of phenolics compounds.


Alk(en)yl cystein sulphoxides Antioxidant activity Dietary fibre Flavonols Fructans Onion wastes 



alk(en)yl cystein sulphoxides


Dietary fibre


Dry matter


Degree of polymerization




Ferric reducing ability assay


Galic acid equivalents


Inductively coupled plasma mass spectrometry


Insoluble dietary fibre


(+)-S-methyl-L-cysteine sulphoxide


non-structural carbohydrates


(+)-S-propyl-L-cysteine sulphoxide


trans-(+)-S-1-propenyl-L-cysteine sulphoxide


Quercetin equivalents


Soluble dietary fibre


Total dietary fibre


Trifluoroacetic acid



This research was supported by funding from Ministerio de Ciencia y Tecnología (AGL2003-09138-C04-01). We thank CEBACAT (Asociación Catalana de Productores-Comercializadores de Cebolla, Spain) for supplying the raw materials, SIDI (Servicio Interdepartamental de Investigación) for the mineral content analysis. Vanesa Benítez would also like to thank Cranfield University for use of their facilities and Dr. Gemma Chope for her assistance.


  1. 1.
    FAO Statistics (2008) Productions, crops. Retrieved February 15 from
  2. 2.
    Waldron KW (2001) Useful ingredients from onion waste. Food Sci Technol 15(2):38–41Google Scholar
  3. 3.
    Griffiths G, Trueman L, Crowther T, Thomas B, Smith B (2002) Onions-a global benefit to health. Phytother Res 16:603–615CrossRefGoogle Scholar
  4. 4.
    Abayomi LA, Terry LA (2009) Implications of spatial and temporal changes in concentration of pyruvate and glucose in onion (Allium cepa L.) bulbs during controlled atmosphere storage. J Sci Food Agric 89:683–687CrossRefGoogle Scholar
  5. 5.
    Downes K, Chope GA, Terry LA (2010) Postharvest application of ethylene and 1-methylcyclopropene either before or after curing affects onion (Allium cepa L.) bulb quality during long term cold storage. Postharvest Biol Technol 55:36–44CrossRefGoogle Scholar
  6. 6.
    Davis F, Terry LA, Chope GA, Faul CFJ (2007) Effect of extraction procedure on measured sugar concentrations in onion (Allium cepa L.) bulbs. J Agric Food Chem 55:4299–4306CrossRefGoogle Scholar
  7. 7.
    Jaime L, Martín-Cabrejas MA, Mollá E, López-Andréu FJ, Esteban RM (2001) Effect of storage on fructan and fructooligosaccharide of onion (Allium cepa L.). J Agric Food Chem 49:982–988CrossRefGoogle Scholar
  8. 8.
    Playne MJ, Bennett LE, Smithers GW (2003) Functional dairy foods and ingredients. Aust J Dairy Technol 58:242–264Google Scholar
  9. 9.
    Jaime L, Mollá E, Fernández A, Martín-Cabrejas MA, López-Andréu FJ, Esteban RM (2002) Structural carbohydrate differences and potencial source of dietary fiber of onion (Allium cepa L.) tissues. J Agric Food Chem 50:122–128CrossRefGoogle Scholar
  10. 10.
    Santas J, Carbó R, Gordon MH, Almajano MP (2008) Comparison of the antioxidant activity of two Spanish onion varieties. Food Chem 107:1210–1216CrossRefGoogle Scholar
  11. 11.
    Downes K, Chope GA, Terry LA (2009) Effect of curing at different temperatures on biochemical composition of onion (Allium cepa L.) skin from three freshly cured and cold stored UK-grown onion cultivars. Postharvest Biol Technol 54:80–86CrossRefGoogle Scholar
  12. 12.
    Roldán-Marín E, Sánchez-Moreno C, Lloría R, de Ancos B, Cano MP (2009) Onion high-pressure processing: Flavonol content and antioxidant activity. LWT Food Sci Technol 42:835–841CrossRefGoogle Scholar
  13. 13.
    Yao LH, Jiang YM, Shi J, Tomás-Barberán FA, Datta N, Singanusong R, Chen SS (2004) Flavonoids in food and their health benefits. Plant Foods Hum Nutr 59:113–122CrossRefGoogle Scholar
  14. 14.
    Randle WM, Lancaster JE, Shaw ML, Sutton KH, Hay RL, Bussard ML (1995) Quantifying onion flavour compounds responding to sulfur fertility-sulfur increases levels of alk(en)yl cysteine sulfoxides and biosynthetic intermediates. J Am Soc Hortic Sci 120(6):1075–1081Google Scholar
  15. 15.
    Mallor C, Thomas B (2008) Resource allocation and the origin of flavour precursors in onion bulbs. J Hortic Sci Biotechnol 83(2):191–198Google Scholar
  16. 16.
    Osmont KS, Arnt CR, Goldman IL (2003) Temporal aspects of onion-induced antiplatelet activity. Plant Foods Hum Nutr 58:27–40CrossRefGoogle Scholar
  17. 17.
    Rose P, Whiteman M, Moore PK, Zhu LZ (2005) Bioactive S-alk(en)yl cysteine sulfoxide metabolites in the genus Allium: The chemistry of potential therapeutic agents. Nat Prod Rep 22:351–368CrossRefGoogle Scholar
  18. 18.
    AOAC (1995) Methods of Analysis, 16th ed. Washington, DC: Association of Official Analytical ChemistsGoogle Scholar
  19. 19.
    Chope GA, Terry LA, White PJ (2006) Effect of controlled atmosphere storage on abscisic acid concentration and other biochemical attributes of onion bulbs. Postharvest Biol Technol 39:233–242CrossRefGoogle Scholar
  20. 20.
    Terry LA, Chope GA, Bordonaba JG (2007) Effect of water deficit irrigation and inoculation with Botrytis cinerea on strawberry (Fragaria x ananassa) fruit quality. J Agric Food Chem 55:10812–10819CrossRefGoogle Scholar
  21. 21.
    Sinclair PJ, Blakeney AB, Barlow EWR (1995) Relationships between bulb dry matter content, soluble solids concentration and non-structural carbohydrate composition in the onion (Allium cepa L.) bulbs. J Sci Food Agric 69:203–209CrossRefGoogle Scholar
  22. 22.
    Ariyama K, Aoyama Y, Mochizuki A, Homura Y, Kadokura M, Yasui A (2007) Determination of the geographic origin of onions between three main production areas in Japan and other countries by mineral composition. J Agric Food Chem 55(2):347–354CrossRefGoogle Scholar
  23. 23.
    Chope GA, Terry LA (2009) Use of canonical variate analysis to differentiate onion cultivars by mineral content as measured by ICP-AES. Food Chem 115:108–1113CrossRefGoogle Scholar
  24. 24.
    Bibak A, Behrens A, Strup S, Knudsen L, Gundersen V (1998) Concentrations of 63 major and trace elements in Danish agricultural crops measured by inductively coupled plasma mass spectrometry. 1. Onion (Allium cepa Hysam). J Agric Food Chem 46(8):3139–3145CrossRefGoogle Scholar
  25. 25.
    Klapec T, Mandic ML, Grgic J, Primorac LJ, Perl A, Krstanovic V (2004) Selenium in selected foods grown or purchased in eastern Croatia. Food Chem 85:445–452CrossRefGoogle Scholar
  26. 26.
    Grigelmo-Miguel N, Martin-Belloso O (1999) Comparison of dietary fibre from by-products of processing fruits and greens and from cereals. Lebensm Wiss Technol 32:503–508CrossRefGoogle Scholar
  27. 27.
    Chope GA, Terry LA, White PJ (2007) The effect of the transition between controlled atmosphere and regular atmosphere storage on bulbs of onion cultivars SS1, Carlos and Renate. Postharvest Biol Technol 44:228–239CrossRefGoogle Scholar
  28. 28.
    Jaime L, Martínez F, Martín-Cabrejas MA, Mollá E, López-Andréu FJ, Waldron KW, Esteban RM (2001) Study of total fructan and fructooligosaccharide content in different onion tissues. J Sci Food Agric 81:177–182CrossRefGoogle Scholar
  29. 29.
    Yoo KS, Pike LM (1998) Determination of flavor precursor compound S-alk(en)yl-L-cysteine sulfoxides by an HPLC method and their distribution in Allium species. Sci Hortic 75:1–10CrossRefGoogle Scholar
  30. 30.
    Bacon JR, Moates GK, Ng A, Rhodes MJC, Smith AC, Waldron KW (1999) Quantitative analysis of flavour precursors and pyruvate levels in different tissues and cultivars of onion (Allium cepa). Food Chem 64:257–261CrossRefGoogle Scholar
  31. 31.
    Randle WM (1997) Onion flavor chemistry and factors influencing flavor intensity. In: Risch SJ, Ho CT (eds), Spices: Flavor Chemistry and Antioxidant Properties. ACS Symposium Series 660, Washington DC: American Chemical Society, pp 41–52Google Scholar
  32. 32.
    Yang J, Meyers KJ, Van Der Heide J, Liu RH (2004) Varietal differences in phenolic content and antioxidant and antiproliferative activities of onions. J Agric Food Chem 52(22):6787–6793CrossRefGoogle Scholar
  33. 33.
    Patil BS, Pike LM (1995) Distribution of quercetin content in different rings of various coloured onion (Allium cepa L.) cultivars. J Hortic Sci 70:643–650Google Scholar
  34. 34.
    Prakash D, Singh BN, Upadhyay G (2007) Antioxidant and free radical scavenging activities of phenols from onion (Allium cepa). Food Chem 102:1389–1393CrossRefGoogle Scholar
  35. 35.
    Bonaccorsi P, Caristi C, Gargiulli C, Leuzzi U (2008) Flavonol glucosides in Allium species: A comparative study by means of HPLC–DAD–ESI-MS–MS. Food Chem 107:1668–1673Google Scholar
  36. 36.
    Caridi D, Trenerry VC, Rochfort S, Duong S, Laugher D, Jones R (2007) Profiling and quantifying quercetin glucosides in onion (Allium cepa L.) varieties using capillary zone electrophoresis and high performance liquid chromatography. Food Chem 105:691–699CrossRefGoogle Scholar
  37. 37.
    Rohn S, Buchner N, Driemel G, Rauser M, Kroh LW (2007) Thermal degradation of onion quercetin glucosides under roasting conditions. J Agric Food Chem 55(4):1568–1573CrossRefGoogle Scholar
  38. 38.
    Lombard K, Peffley E, Geoffriau E, Thompson L, Herring A (2005) Quercetin in onion (Allium cepa L.) after heat-treatment simulating home preparation. J Food Compos Anal 18:571–581CrossRefGoogle Scholar
  39. 39.
    Beesk N, Perner H, Schwarz D, George E, Kroh LW, Rohn S (2010) Distribution of quercetin-3, 4′-O-diglucoside, quercetin-4′-O-monoglucoside, and quercetin in different parts of the onion bulb (Allium cepa L.) influenced by genotype. Food Chem 122:566–571CrossRefGoogle Scholar
  40. 40.
    Nuutila AM, Puupponen-Pimiä R, Aarni M, Oksman-Caldentey KM (2003) Comparison of antioxidant activities of onion and garlic extracts by inhibition of lipid peroxidation and radical scavenging activity. Food Chem 81:485–493CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Vanesa Benítez
    • 1
    Email author
  • Esperanza Mollá
    • 1
  • María A. Martín-Cabrejas
    • 1
  • Yolanda Aguilera
    • 1
  • Francisco J. López-Andréu
    • 1
  • Katherine Cools
    • 2
  • Leon A. Terry
    • 2
  • Rosa M. Esteban
    • 1
  1. 1.Departamento de Química Agrícola, Facultad de Ciencias/Instituto de Ciencias de la Alimentación (CIAL)Campus de la Universidad Autónoma de MadridMadridSpain
  2. 2.Plant Science LaboratoryCranfield UniversityBedfordshireUK

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