Combined postharvest UV-C and 1-methylcyclopropene (1-MCP) treatment, followed by storage continuously in low level of ethylene atmosphere improves the quality of Tahitian limes
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The green Tahitian limes (Citrus latifolia) were exposed to 7.2 kJ m−2 UV-C and 0.5 μL L−1 1-methylcyclopropene (1-MCP) treatments both separately and in combination. After treatment, fruit were stored in ethylene free (i.e. air containing < 0.005 μL L−1) or 0.1 μL L−1 ethylene at 20 °C and 100% RH. The results showed that UV-C treatment delayed skin degreening and reduced endogenous ethylene production compared to untreated control fruit, however these effects reduced over the storage time. As expected, 1-MCP inhibited ethylene production, reduced calyx abscission and retained peel greenness during the storage. Both of the combination treatments, 1-MCP + UV-C and UV-C + 1-MCP reduced endogenous ethylene production and delayed skin yellowing. In all treatments, UV-C and 1-MCP resulted in lower fruit respiration rates than untreated control fruit, however this effect diminished during 7 and 14 days storage for fruits stored in air and 0.1 μL L−1 ethylene atmosphere, respectively. There was no difference in weight loss, SSC, TA and SSC/TA ratio between the treatments and storage conditions. The results suggest that a pre-storage UV-C treatment, followed by storage at low level of ethylene improves the quality of limes, with the additional improvement when combined with 1-MCP treatment prior or after UV-C irradiation.
KeywordsCitrus latifolia Quality Ethylene Respiration Colour Calyx abscission
This work was supported by the University of Newcastle, Australian Research Council Training Centre for Food and Beverage Supply Chain Optimisation (IC140100032) and NSW Department of Primary Industries. We acknowledge to Agrofresh Solution Inc. for providing 1-MCP for this study.
- Buchert AM, Civello PM, Martinez GA (2011) Effect of hot air, UV-C, white light and modified atmosphere treatments on expression of chlorophyll degrading genes in postharvest broccoli (Brassica oleracea L.) florets. Sci Hortic 127:214–219. https://doi.org/10.1016/j.scienta.2010.11.001 CrossRefGoogle Scholar
- Burns JK (2016) Lime. In: Gross NC, CWang CY, Salveit M (eds) The commercial storage of fruits, vegetables, and florist and nursery stocks. USDA, ARS, Washington, DC, pp 390–391Google Scholar
- D’hallewin G, Schirra M, Manueddu E, Piga A, Ben-Yehoshua S (1999) Scoparone and scopoletin accumulation and ultraviolet-C induced resistance to postharvest decay in oranges as influenced by harvest date. J Am Soc Hortic Sci 124:702–707Google Scholar
- Kaewsuksaeng S, Urano Y, Aiamla-or S, Shigyo M, Yamauchi N (2011) Effect of UV-B irradiation on chlorophyll-degrading enzyme activities and postharvest quality in stored lime (Citrus latifolia Tan.) fruit. Postharvest Biol Technol 61:124–130. https://doi.org/10.1016/j.postharvbio.2011.02.014 CrossRefGoogle Scholar
- Kaewsuksaeng S, Tatmala N, Srilaong V, Pongprasert N (2015) Postharvest heat treatment delays chlorophyll degradation and maintains quality in Thai lime (Citrus aurantifolia Swingle cv. Paan) fruit. Postharvest Biol Technol 100:1–7. https://doi.org/10.1016/j.postharvbio.2014.09.020 CrossRefGoogle Scholar
- Kahlau S, Bock R (2008) Plastid transcriptomics and translatomics of tomato fruit development and chloroplast-to-chromoplast differentiation: chromoplast gene expression largely serves the production of a single protein. Plant Cell 20:856–874. https://doi.org/10.1105/tpc.107.055202 CrossRefGoogle Scholar
- Pristijono P (2007) Use of nitric oxide to extend the postharvest life of fresh-cut and intact fruits and vegetables. (PhD)The University of Newcastle, Australia, 223ppGoogle Scholar
- Reid SM (2002) Ethylene in postharvest technology (Oakland, CA: postharvest technology of horticultural crops, regents of the University of California, Division of Agricultural and Natural Resources)Google Scholar
- Wang J, You Y, Chen W, Xu Q, Wang J, Liu Y, Song L, Wu J (2015) Optimal hypobaric treatment delays ripening of honey peach fruit via increasing endogenous energy status and enhancing antioxidant defence systems during storage. Postharvest Biol Technol 101:1–9. https://doi.org/10.1016/j.postharvbio.2014.11.004 CrossRefGoogle Scholar