At the Multi Commodity Exchange, mentha oil for delivery in December month declined by Rs 3.30, or 0.32 per cent, to Rs 1,022.90 per kg in business turnover of 43 lots.
Similarly, the oil for delivery in January 2017 contracts shed 20 paise, or 0.02 per cent to Rs 1,038 per kg in 112 lots.
Analysts said offloading of positions by participants owing to slackened demand from consuming industries in spot market against ample stocks, mainly kept mentha oil prices lower at futures trade.