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UV-C treatments enhance antioxidant activity, retain quality and microbial safety of fresh-cut paprika in MA storage

  • In-Lee Choi
  • Tae Jong Yoo
  • Ho-Min Kang
Research Report Postharvest Technology

Abstract

Fresh-cut paprika was treated with 245 nm UV-C irradiations of 7, 15, and 28 kJ·m-2, packaged using a laser ablation breathable film with permeability of 20,000 mL O2·m-2·day-1·atm-1, and was stored in general distribution temperature at 8°C. The paprikas were evaluated antioxidant activity and internal quality, reducing microbial populations, modifying composition of CO2, O2 and ethylene content in packages. Fresh-cut paprika irradiated with 15 kJ·m-2 UV-C has shown the lowest fresh weight loss and highest overall quality during MA storage. The gas composition (CO2 and O2 concentrations) of UV-C 15 kJ·m-2 treatment showed the closest conditions to CA conditions of paprika. All UV-C treatments presented higher ethylene concentration in package as compared to those of the control as well as NaOCl treatment, because the ethylene content was elevated in response to abiotic stress, possibly by the treatment of UV-C in paprika. After 7 days of storage at 8°C, the antioxidant activity (DPPH activity), total phenolic compound and vitamin C contents of fresh-cut paprika were maintained highest by UV-C 15 kJ·m-2 treatments, followed by 7 kJ·m-2 and 28 kJ·m-2. The microbial population was reduced by UV-C treatment on the 7 days of MA storage, with the fungal incidence rate lowest in 15 kJ·m-2 and 28 kJ·m-2 UV-C treatment and total bacterial numbers showed the lowest in UV-C 15 kJ·m-2 treatment representing lower than 6.0 log CFU·g-1 which was the reference limit for microbial contamination. These results suggest that the application of UV-C 15 kJ·m-2 on fresh-cut paprika represents the most favorable results of gas composition in package, antioxidant capacity (e.g., vitamin C contents) and sterilization of fungi and bacteria during MA storage, and extending the shelf life.

Additional key words

DPPH activity ethylene fungal incidence rate gas composition total bacterial number total phenolic compound vitamin C 

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Literature Cited

  1. Abe, N., T. Murata, and A. Hirota. 1998. Novel 1,1-diphenyl-2-picrylhydrazylradical scavengers, bisorbicillin and demethyltrichodimerol, from a fungus. Biosci. Biotechnol. Biochem. 62:661–662.CrossRefGoogle Scholar
  2. Allende, A. and F. Artés. 2003. Combined ultraviolet-C and modified atmosphere packaging treatments for reducing microbial growth of fresh processed lettuce. LWT-Food Sci. Technol. 36:779–786.CrossRefGoogle Scholar
  3. Choi, I.L., T.J. Yoo, I.S. Kim, Y.B. Lee, and H.M. Kang. 2011. Effect of non-perforated breathable films on the quality and shelf life of paprika during MA storage in simulated long distance export condition. J. Bio-Environ. Cont. 20:150–155.Google Scholar
  4. Choi, I.L., Y.B. Lee, I.S. Kim, J.P. Baek, and H.M. Kang. 2013. Effect of several treatments on chilling injury of paprika fruits during low temperature storage. Prot. Hortic. Plant Fact. 22:427–431.CrossRefGoogle Scholar
  5. Choi, S.J. 2011. Enhancement of skin color by postharvest UV irradiation in ‘Fuyu’ persimmon fruits. Kor. J. Hort. Sci. Technol. 29:441–446.Google Scholar
  6. Cristescu, S.M., D. De Martinis, S.te Lintel Hekkert, D.H. Parker, and F.J.M. Harren. 2002. Ethylene production by Botrytis cinerea in vitro and in tomatoes. Appl. Environ. Microbiol. 68:5342–5350.PubMedCentralPubMedCrossRefGoogle Scholar
  7. Cuvi, M.J.A., A.R. Vicente, A. Concellón, and A.R. Chaves. 2011. Changes in red pepper antioxidants as affected by UV-C treatments and storage at chilling temperatures. LWT-Food Sci. Technol. 44:1666–1671.CrossRefGoogle Scholar
  8. Das, B.K. and J.G. Kim. 2010. Combined effect of heat treatment and washing solutions on the quality and microbial reduction of fresh-cut paprika. Hort. Environ. Biotechnol. 51:257–261.Google Scholar
  9. Erkan, M., S.Y. Wang, and C.Y. Wang. 2008. Effect of UV treatment on antioxidant capacity, antioxidant enzyme activity and decay in strawberry fruit. Postharvest Biol. Technol. 48:163–171.CrossRefGoogle Scholar
  10. González-Aguilar, G.A., J.F. Ayala-Zavala, S. Ruiz-Cruz, E. Acedo-Félix, and M.E. Díaz-Cinco. 2004. Effect of temperature and modified atmosphere packaging on overall quality of fresh-cut bell peppers. LWT-Food Sci. Technol. 37:817–826.CrossRefGoogle Scholar
  11. González-Aguilar, G.A., R. Zavaleta-Gatica, and M.E. Tiznado-Hernández. 2007. Improving postharvest quality of mango ‘Haden’ by UV-C treatment. Postharvest Biol. Technol. 45:108–116.CrossRefGoogle Scholar
  12. Howard, L.R., S.T. Talcott, C.H. Brenes, and B. Villalon. 2000. Changes in phytochemical and antioxidant activity of selected pepper cultivars (Capsicum species) as influenced by maturity. J. Agric. Food Chem. 48:1713–1720.PubMedCrossRefGoogle Scholar
  13. Kader, A.A. 2002. Postharvest technology of horticultural crops. 3rd ed. University of California, Division of Agriculture and Natural Resources. USA.Google Scholar
  14. Kang, H.M. and M.E. Saltveit. 2003. Wound-induced increases in phenolic content of fresh-cut lettuce is reduced by a short immersion in aqueous hypertonic solutions. Postharvest Biol. Technol. 29:271–277.CrossRefGoogle Scholar
  15. Kays, S.J. and R.E. Paull. 2004. Postharvest biology. Exon Press, Athens, GA, USA.Google Scholar
  16. Kim, H.S., J.Y. Jung, H.K. Kim, K.M. Ku, J.K. Suh, Y. Park, and Y.H. Kang. 2011. Influences of meteorological conditions of harvest time on water-soluble vitamin contents and quality attributes of oriental melon. J. Bio-Environ. Cont. 20:290–296.Google Scholar
  17. Kim, M.S., M.H. Kim, M.Y. Kim, C.W. Son, S.K. Lim, and M.R. Kim. 2009. Microbiological hazard analysis of commercial side dishes purchased from traditional markets and supermarkets in Daejeon. Kor. J. Food Cookery Sci. 25:84–89.Google Scholar
  18. López-Rubira, V., A. Conesa, A. Allende, and F. Artés. 2005. Shelf life and overall quality of minimally processed pomegranate arils modified atmosphere packaged and treated with UV-C. Postharvest Biol. Technol. 37:174–185.CrossRefGoogle Scholar
  19. Ministry of Agriculture, Food and Rural Affairs (MAFRA). 2013. Greenhouse status for the vegetable grown in facilities and the vegetable productions in 2012. MAFRA, Sejong, Korea. p. 104.Google Scholar
  20. Nimitkeatkai, H. and J.G. Kim. 2009. Washing efficiency of acidic electrolyzed water on microbial reduction and quality of ‘Fuji’ Apples. Kor. J. Hort. Sci. Technol. 27:250–255.Google Scholar
  21. Promyou, S. and S. Supapvanich. 2012. Effect of ultraviolet-C (UV-C) illumination on postharvest quality and bioactive compounds in yellow bell pepper fruit (Capsicum annuum L.) during storage. Afr. J. Agric. Res. 7:4084–4096.Google Scholar
  22. Rodoni, L.M., A. Concellón, A.R. Chaves, and A.R. Vicente. 2012. Use of UV-C treatments to maintain quality and extend the shelf life of green fresh-cut bell pepper (Capsicum annuum L.). J. Food Sci. 77:632–639.CrossRefGoogle Scholar
  23. Shama, G. 2007. Process challenges in applying low doses of ultraviolet light to fresh produce for eliciting beneficial hermetic responses. Postharvest Biol. Technol. 44:1–8.CrossRefGoogle Scholar
  24. Stevens, C., J. Liu, V.A. Khan, J.Y. Lu, M.K. Kabwe, C.L. Wilson, E.C.K. lgwegbe, E. Chalutz, and S. Dorby. 2004. The effects of low-dose ultraviolet light-C treatment on polygalacturonase activity, delay ripening and Rhizopus soft rot development of tomatoes. Crop Prot. 23:551–554.CrossRefGoogle Scholar
  25. Tiecher, A., L.A. de Paula, F.C. Chaves, and C.V. Rombaldi. 2013. UV-C effect on ethylene, polyamines and the regulation of tomato fruit ripening. Postharvest Biol. Technol. 86:230–239.CrossRefGoogle Scholar
  26. Vicente, A.R., C. Pineda, L. Lemoine, P.M. Civello, G.A. Martinez, and A.R. Chaves. 2005. UV-C treatments reduce decay, retain quality and alleviate chilling injury in pepper. Postharvest Biol. Technol. 35:69–78.CrossRefGoogle Scholar
  27. Yoo, T.J., H.J. Jung, I.L. Choi, I.S. Kim, and H.M. Kang. 2010. A comparison of postharvest physiology and storability of paprika fresh-cut made from disordered and normal fruits. J. Bio-Environ. Cont.19:49–54.Google Scholar

Copyright information

© Korean Society for Horticultural Science and Springer-Verlag GmbH 2015

Authors and Affiliations

  1. 1.Department of HorticultureKangwon National UniversityChuncheonKorea

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