Mentha oil futures for May fell by Rs 23.90, or 2.50%, to Rs 931.50 per kg, with a business volume of 778 lots.
At the Multi Commodity Exchange (MCX), the June contract drifted by Rs 18.80, or 1.98%, to Rs 929.10 per kg in 133 lots.
Prices lost trade as speculators indulged in profit-booking driven by subdued domestic demand.
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Less industrial demand for the commodity also influenced the prices.