Oil was mixed in Asian trade tuesday with sentiment weighed down by a slump in Chinese stocks, analysts said.

New York’s main contract, light sweet crude for February delivery, dropped 58 cents to USD 90.96 a barrel and Brent North Sea crude for March delivery was up 17 cents at USD 97.60.

“The Shanghai Exchange slumped three per cent, which prompted profit-taking in oil,” said Ong Yi Ling, investment analyst for Phillip Futures in Singapore.

Shanghai’s Composite Index closed Monday down 3.03 percent, or 84.68 points, at 2,706.66 amid growing expectations that Beijing will roll out tougher measures to crack down on inflation.

Optimism about the global economic recovery and interest from bullish investors have pushed crude prices to trade close to USD 100 a barrel in recent sessions.

The rise in global oil prices has also been attributed to a harsh winter hitting Europe and parts of North America, as well as growth in China and other developing nations.

The OPEC oil cartel, which pumps 40 per cent of world crude, revised upwards its 2011 world demand growth estimate on Monday, given the pace of global economic recovery and cold winter weather in the northern hemisphere.

The Organisation of the Petroleum Exporting Countries said it was pencilling in world oil demand growth of 1.23 million barrels per day (bpd) or 1.43 percent to 87.32 million bpd for this year, compared with 1.37 per cent previously.

“The magnitude and the speed of the world economic recovery will have a remarkable impact on world oil demand this year,” OPEC said in its latest monthly bulletin.