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Effect of Precooling and Storage Temperatures on the Post-harvest Management of the Fruits in 'Maehyang' and 'Soogyeong' Strawberries for Export  

Park, Ji-Eun (Institute of Agriculture and Life Sciences, Gyeongsang National University)
Hwang, Seung-Jae (Institute of Agriculture and Life Sciences, Gyeongsang National University)
Publication Information
Journal of Bio-Environment Control / v.19, no.4, 2010 , pp. 366-371 More about this Journal
Abstract
A study was conducted to examine the effect of precooling (2, 4, or $8^{\circ}C$) and storage (4, 8, or $10^{\circ}C$) temperatures on the storage life of 'Maehyang' and 'Soogyeong' strawberries for export. Fruits at a 70% ripe stage were harvested from a commercial greenhouse in Jinju on March 16, 2010. Fruits were precooled by a forced draft cooling for 3 hours, transported for about 30 minutes to a lab., and then stored. For precooling, small precoolers set in the farm were used. During storage, fruits were examined for their changes in weight, hardness, color (hunter value), soluble solid content, incidence of gray mold (Botrytis cinerea), and marketability at a two days interval from March 16 to March 30. In both cultivars, hardness, sugar content, and hunter value were higher in 'Soogyeong' than 'Maehyang'. The greatest hardness and soluble solid content were obtained after storage at $4^{\circ}C$ in both cultivars. As the ripening stage progressed, hardness and soluble solid content decreased. Also, fresh weight decreased during storage at all temperatures. Gray mold was the greatest at $10^{\circ}C$ storage temperature. The results indicate that effectiveness for keeping the freshness was best achieved by precooling at $2^{\circ}C$ and storage at $4^{\circ}C$ in both cultivars.
Keywords
gray mold; hardness; hunter value; storage temperature;
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