However, palmolein strengthens on selective buying.
Elsewhere, non-edible oils held steady in thin trade.
Traders said reduced offtake by stockists due to fall in demand from retailers against adequate stocks, mainly led to the decline in groundnut and mustard oil prices.
In the national capital, groundnut mill delivery (Gujarat) oil fell by Rs 100 to Rs 8,900 per quintal.
Mustard expeller (Dadri) also eased by Rs 50 to Rs 7,750 per quintal.
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Following are today's quotations (in Rs per quintal):
Oilseeds: Mustard seed Rs 2,950-3,050 and Groundnut seed Rs 2,150-2,900. Vanaspati Ghee (15-litre tin) Rs 800-1,000.
Edible oils: Groundnut Mill Delivery (Gujarat) Rs 8,900, Groundnut Solvent Refined (per tin) Rs 1,700-1,800, Mustard expeller (Dadri) Rs 7,750, Mustard Pakki Ghani (per tin) Rs 1,250-1,295, Mustard Kachi Ghani (per tin) Rs 1,300-1,400, Sesame Mill delivery Rs 8,000, Soybean Refined Mill Delivery (Indore) Rs 6,600, Soybean Degum (Kandla) Rs 6,200, Crude Palm Oil (Ex-Kandla) Rs 4,750, Cottonseed Mill Delivery (Haryana) Rs 6,400, Palmolein (RBD) Rs 5,300, Palmolein (Kandla) Rs 5,350 and Coconut (per tin) Rs 2,050-2,100.