POST HARVEST STUDIES IN LEMONGRASS VARIETIES (Cymbopogon flexuosus Nees)
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Date
2003
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UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, DHARWAD
Abstract
"An Investigation was carried out to study the effect of various harvest treatments on
lemongrass varieties prior to distillation on the oil yield, oil content and citral content of essential oil
at the Department of Medicinal and Aromatic plants, Kittur Rani Channamma College of Horticulture,
Arabhavi, during 2002-03.
Chopping of lemongrass to different lengths significantly increased the oil yield and oil content,/|
mong the different chopping lengths, the highest recovery of the oil and the oil content (1.22%)
was obtained in 3 cm chopping length. However, these treatments did not affect the citral content
of oil significantly.
Among the various periods of storage of lemongrass^storing of the lemongrass for a period of
72 hours resulted in highest oil yield and oil content (1.37%). However, these treatments did not
affect the citral content of oil significantly.
Dipping of lemongrass in different concentration of sodium chloride solutions (0.5% to 2%)
for 24 hours did not show any significant influence on the oil yield, oil content as well as citral
content.
irrespective of varieties, there was significant difference between the treated grass and untreated
control with respect to oil yield and oil content. Among the varieties, the highest mean oil
yield and oil content (1.03%) was recorded in variety krishna. However, the citral content of oil was
unaffected by either varieties or treatments.
From the present investigation, it is concluded that the treatment consisting of dipping of
grass in 2.0 per cent sodium chloride solution for 24 hours, followed by storage of grass for 72
hours and then chopping of grass to length of 3 cm before distillation can be adopted for better oil
recovery as well as quality."
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No. of references 36