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Title: | Effect of pretreatments on extending the shelf life of minimally processed “Ela Batu” (Solanum surattense) |
Authors: | Dharmabandu, P.T.S. de Silva, D.S.M. Wimalasena, S. Wijesinghe, W.A.J.P. Sarananda, S. |
Keywords: | Solunum surattense minimal processing pre-treatments calcium chloride shelf life |
Issue Date: | 2007 |
Publisher: | Tropical Agricultural Research and Extension |
Citation: | Dharmabandu, P.T.S., De Silva, D.S.M., Wimalasena, S., Wijesinghe,W.A.J.P. and Sarananda, S. 2007. Effect of pretreatments on extending the shelf life of minimal processed elabatu (Solanum surrantensis). Tropical Agricultural Research and Extension, 10: 61-66. |
Abstract: | Due to the cumbersome nature of the cleaning process and high time consumption for the preparation, most Sri Lankan housewives are reluctant to prepare Solunum surattense (Sinh. Elabatu) as a vegetable for their diet. If S. surattense is available in „ready to cook‟ form it would become a popular vegetable among Sri Lankan housewives. Studies were carried out to identify the best conditions for minimal processing of S. surattense. As pre-treatments 2% (w/v) calcium chloride solution, 0.6% (w/v) turmeric solution, 1% (w/v) vinegar solution, 2% (w/v) calcium chloride + 0.6% (w/v) turmeric solution and 2% (w/v) calcium chloride +1% (w/v) vinegar solution were used. Low density polyethylene (LDPE) pouches (gauge 150) were used to pack pre-treated samples and stored them at 8ºC. In all the pre-treated samples stored at 8ºC, Salmonella and E. coli were absent and coliform counts were at acceptable levels. Sensory evaluation of cooked pre-treated samples showed that the sample pre-treated with 2% (w/v) calcium chloride was the best. In addition to shelf life, colour, and degree of browning of the treatments were also acceptable. Treating S. surattense cut fruits with 2% (w/v) calcium chlo-ride solution before packing in LDPE pouches and storing in 8ºC found to be the best method for extending shelf-life of the fruit. The product could be kept for seven days. |
URI: | http://repository.kln.ac.lk/handle/123456789/10091 |
Appears in Collections: | Chemistry |
Files in This Item:
File | Description | Size | Format | |
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Effect of Pre-treatments.pdf | 157.53 kB | Adobe PDF | View/Open |
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