Marketmen said acceleration in supplies amid slackness in demand on higher levels in spot markets, mainly attributed the fall in guargum prices at future markets.
Slow down in export demand too dampened the trading sentiments to some extent, they added.
At the National Commodity and Derivatives Exchange, guargum prices for second contract November month dropped by Rs 210, or 1.27 per cent, to Rs 16,350 per quintal, having an open interest of 5,407 lots.