NICEM Pyeongchang Branch Institute, Green Bio Science & Technology, Seoul National University1
Department of Plant Science, College of Life Sciences, Gangneung-Wonju National University2
Gangneung-si Agricultural Technology Center3
Division of Biotechnology, College of Life Sciences and Biotechnology, Korea University4
This study was conducted to investigate the effects of low temperature shipping condition and precooling treatments (forced air and room cooling) on everbearing strawberry through export simulation of ‘Goha’ and ‘Flamenco’ cultivars. After harvest, it took two days to prepare export procedure such as precooling, sorting, storage, transportation, quarantine and handling, and then everbearing strawberry was carried out shipping at room (20-25°C) or low (8°C) temperature conditions. In the case of shipping at room temperature, weight losses of both cultivars were increased up to 10% after 2 days where ‘Goha’ being 2% higher than that of ‘Flamenco’. In ‘Flamenco’ cultivar, shipping temperature and precooling treatment were not effective in firmness and soluble solids contents during transporting periods. However, in ‘Goha’ cultivar, room cooling treatment and low shipping temperature were effective in maintaining firmness until 4 days after shipping. Especially titratable acidity was affected by shipping temperature (P ≤ 0.001) and precooling treatments (P ≤ 0.05) in ‘Goha’ cultivar. Also shipping temperature under 8oC delayed coloring and decay incidence of both strawberry cultivars, and precooling treatments of both forced air and room cooling reduced frequency of decay. The shelf life of everbearing strawberry at low shipping temperature was extended more than 4 days compared with shipping at room temperature. Precooling treatment including forced air or room cooling will be useful for the two cultivars when they are transported at low temperature. In ‘Flamenco’ cultivar, the effect of forced air and room cooling was similar, whereas in ‘Goha’ room cooling was more effective.
1. Cornell Cooperative Extension (CCE). 2003. Strawberry, p. 54-64. In: Cornell guide to growing fruit at home. Cornell University Press, Ithaca, NY, USA http://www.gardening.cornell.edu/ fruit/homefruit/homefruit.pdf.
2. Eum, H.L. and S.K. Lee. 2007. The responses of Yukbo strawberry (Fragaria × ananassa Duch.) fruit to nitric oxide. Food Sci. Biotechnol. 16:123-126.
3. Food and Agriculture Organization of the United Nations (FAO). 2010. FAOSTAT. http://faostat.fao.org/site/567/DesktopDefault. aspx?PageID=567#ancor.
4. Hwang, D.K., H.L. Eum, Y.R. Yeoung, K.W. Park, and S.J. Hong. 2013. Characteristics of everbearing strawberry cultivars and the effect of precooling treatment to maintain quality of ‘Charlotte’ cultivar grown on highland in summer season. Kor. J. Hort. Sci. Technol. 31:282-288.
5. Jouquand, C. and C. Chandler. 2008. A sensory and chemical analysis of fresh strawberries over harvest dated and seasons reveals factors that affect eating quality. J. Amer. Soc. Hort. Sci. 133:859-867.
6. Li, C. and A.A. Kader. 1989. Residual effects of controlled atmospheres on postharvest physiology and quality of strawberries. J. Amer. Soc. Hort. Sci. 114:629-634.
7. Martinez-Romero, D., S. Castillo, and D. Valero. 2003. Forced-air cooling applied before fruit handling to prevent mechanical damage of plums (Prunus salicina Lindl.). Postharvest Biol. Technol. 28:135-142.
8. Nunes, M.C.N., J.K. Brecht, A.M.M.B. Morais, and S.A. Sargent. 1995a. Physical and chemical quality characteristics of strawberries after storage are reduced by a short delay to cooling. Postharvest Biol. Technol. 6:17-28.
9. Nunes, M.C.N., J.K. Brecht, S.A. Sargent, and A.M.M.B. Morais. 1995b. Effects of delays to cooling and wrapping on strawberry quality (cv. Sweet Charlie). Food Control 6:323-328.
10. Pérez, A.G., R. Olias, J.M. Olias, and C. Sanz. 1998. Strawberry quality as a function of the ‘high pressure fast cooling’ design. Food Chem. 62:161-168.
11. Wills, R.B.H., B. McGlasson, D. Graham, and D. Joyce. 1998. Physiology and biochemistry, p. 33-59. In: Postharvest. An introduction to the physiology and handling of fruit, vegetables, and ornamentals. 4th ed. University of New South Wales Press Ltd., Sydney, Australia.
12. Wills, R.B.H. and G.H. Kim. 1995. Effect of ethylene on postharvest life of strawberries. Postharvest Biol. Technol. 6:249-255.