Abstract
A mechanical palmyrah fruit pulp extractor was constructed which had square blades fitted at an angle to the vertical shaft through rods. The shaft was connected with a 0.75 horse power motor. A gear box was used to regulate the rpm. Using this extractor, the manual and mechanical extraction of pulp from palmyrah fruit were compared. The rate and cost (in Sri Lankan Rupees, SLR) for manual extraction of fuit pulp are 11.9 min fruit−1 and SLR 1.52 fruit−1 while for mechanical extraction the figures are 0.48 min fruit−1 and SLR 0.54 fruit−1 respectively, The amount of pulp extracted per fruit by manual and mechanical processes was 0.63 kg with 11–13% brix and 0.84 kg with 9–10% brix respectively. Eventhough there is a 2% difference in the brix content of the pulp obtained by the two processes, the soluble solids separated per fruit is the same (0.08 kg fruit−1) in both processes.
References
Mohanathas, S.: Paper on palmyrah Industry in Sri Lanka. Submitted at the workshop on palmyrah sponsored by FAO and PDB, Sri Lanka, 1983
Jeganathan, N.: Paper on palmyrah Industry in Sri Lanka. Submitted at the workshop on palmyrah sponsored by FAO and PDB, Sri Lanka, 1983
Pearson, D.: The chemical analysis of foods. 7th edition (1976), Edinburgh, Churchill, Livingstone, p. 186
Jeyaratnam, M.: The chemistry of palmyrah products. M.Phil. Thesis, Department of Chemistry, University of Jaffna, Sri Lanka, 1986
Cole, M. B.; Keenan, M. H. J.: A quantitative method for predicting shelf life of soft drinks using a model system. J. Ind. Microbiol 2, 59–62 (1987)
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Mahendran, S., Balasubramaniam, K. & Sivaganeshan, K. Mechanical extraction of palmyrah fruit pulp. Bioprocess Engineering 8, 301–302 (1993). https://doi.org/10.1007/BF00369845
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DOI: https://doi.org/10.1007/BF00369845