Solar drying of West Indian ginger (Zingiber officinale Roscoe) rhizome using a wire basket dryer

D.A. Balladin, I.Chang Yen, D.R. McGaw and O. Headley

Renewable Energy, 1996, vol. 7, issue 4, 409-418

Abstract: A wire basket dryer (1.8 m × 0.9 × 0.2 m) was used to dry sliced (0.15 cm) West Indian ginger (Zingiber officinale Roscoe) rhizome to an acceptable moisture content of 10.2% (dry weight basis) over a 3 day period. The optimum charge size was 14.97 kg, with a packing density of 462.04 kg m−3 and a specific drying rate of 0.446 h−1. The quantities (determined by high-pressure liquid chromatography) of the main pungent principles (gingerol and shogaol) extracted from fresh, non-steam-distilled solar-dried and steam-distilled solar-dried ginger rhizomes showed increases of 0.068, 0.46 and 0.67 g [per 100 g (dry weight basis)], respectively, with a decrease in the oleoresin quality (reflected in pungency profile) of the same order.

Date: 1996
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:7:y:1996:i:4:p:409-418

DOI: 10.1016/0960-1481(95)00137-9

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