New Delhi: Food inflation rose to 12.21 percent during the week ended October 22, with expensive vegetables, pulses, fruits and milk, putting more burden on the common man.

READ MORE: Rise in food inflation due to festivity, says Pranab

Food inflation, as measured by the Wholesale Price Index (WPI), stood at 11.43 percent in the previous week. The rate of price rise of food items stood at 13.55 percent in the corresponding week of the previous year.

As per data released by the government on Thursday, vegetables became 28.89 percent costlier on a year-on-year basis. Pulses grew costlier by 11.65 percent, fruits by 11.63 percent and milk by 11.73 percent.

Eggs, meat and fish also became 13.36 percent more expensive on an annual basis, while cereal prices were up 4.13 percent.

However, onions became 20.33 cheaper. Wheat prices were also down 1.54 percent year-on-year during the week under review.

Commenting on the latest food inflation numbers, Finance Minister Pranab Mukherjee said the rise in rate of price rise was a matter of "grave concern", but attributed this to the festive season, which led to an increase in demand.

"Inflation is still a matter of grave concern. This is also the affect of the festive season. November onward, the real trend for the remaining four months of the fiscal will be available," he told reporters here.

Fuel and power inflation stood at 14.50 percent during the week ended October 22, compared to 14.70 percent in the previous week.

The upsurge in food prices is likely to exert further pressure on the government and the Reserve Bank to tackle the situation expeditiously.

Headline inflation, which also factors in manufactured items, has been above the 9 percent-mark since December, 2010. It stood at 9.72 percent in September this year.