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http://dx.doi.org/10.14578/jkfs.2018.107.1.71

Effect of Sulfur Dioxide (SO2) Pad on the Quality of Dried Persimmons and Dried Persimmons Slices during Storage at Room Temperature  

Oh, Sung-Il (Division of Special-purpose Trees, National Institute of Forest Science)
Lee, Sugwang (Division of Special-purpose Trees, National Institute of Forest Science)
Park, Hyowon (Division of Special-purpose Trees, National Institute of Forest Science)
Kim, Chul-Woo (Division of Special-purpose Trees, National Institute of Forest Science)
Lee, Uk (Division of Special-purpose Trees, National Institute of Forest Science)
Publication Information
Journal of Korean Society of Forest Science / v.107, no.1, 2018 , pp. 71-80 More about this Journal
Abstract
The effect of $SO_2$ treated pads (Sodium metabisulphate 0, 0.5, 1.0, 2.0 g/kg) on the quality of dried persimmons and dried persimmons slices were investigated. The $SO_2$ treated pads did not affect to weight, moisture loss rate, and soluble solid contents of dried persimmons and dried persimmons slices. The color change (${\Delta}E$) of dried persimmons and dried persimmons slices after storage for 8 weeks were the highest (value=6.0, 6.2) in control, whereas that was the lowest (value=4.8, 4.7) under $SO_2$ pad 2.0 g/kg condition, respectively. When we measured the browning degree of dried persimmons, they showed O.D. 0.65, 0.57, 0.29, and 0.18 in serial dilution treated pads with $SO_2$ pad 0, 0.5, 1.0, and 2.0 g/kg. The browning degree data from aforementioned dried persimmons after 8 weeks was similar to that from dried persimmons slices. The decay rate of dried persimmons and dried persimmons slices after storage for 8 weeks were the highest (value=33.3%, 36.7%) in control, whereas that was the lowest (value=3.3%, 6.7%) under $SO_2$ pad 2.0 g/kg condition, respectively. The concentration of residual $SO_2$ in dried persimmons and dried persimmons slices were detected within a safe range of 15.3~30.0 ppm. Therefore, the shelf-life of dried persimmons and dried persimmons slices were lengthened in $SO_2$ treated pads (especially in $SO_2$ pad 2.0 g/kg) for inhibiting of browning and decay.
Keywords
Diospyros kaki; browning; decay; storage; sulphur dioxide; quality;
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Times Cited By KSCI : 6  (Citation Analysis)
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