A food policy research group is predicting substantial increases in food prices, arguing that a combination of factors will lead to rising food prices "for the foreseeable future."

The International Food Policy Research Institute said a major secular trend -- falling food prices prompted by high-yield grains and technological advancement, among other factors -- is set to end.

IFPRI Director Joachim Braun said climate risk and climate change, rising demand for food in emerging markets, and trade barriers will contribute to higher food prices in the decades ahead. For example, global warming is expected to decrease global agricultural production by 16% by 2020, while China and India and other rapidly-developing markets increase demand for meat and dairy products, increasing the price of those goods, as well as grain.

Procter & Gamble Co. (NYSE: PG) currently owns dozens of brands, many of which are household names. From Pampers to Pringles, Crest to Cover Girl, the consumer-products giant has a foothold in many industries, and its 2005 purchase of Gillette merely added to this list. (For a summary of the company's current product lines, click here.)

Now, there is some speculation on Wall Street as to whether Procter & Gamble will sell off some of its brands in an effort to streamline operations and return cash back to company shareholders. While it is pure conjecture at this point -- company officials have not said publicly that they are considering spinning off any brands -- Lehman Brothers analyst Lauren Lieberman told The New York Times that she suspects "there has been an active dialogue within P&G about if, when, and what pieces of its portfolio should be pruned via sale or spin."

Ms. Lieberman ran the numbers, and it appears as though the most likely brands for sale consideration are Duracell, Braun, Folgers (and other coffee), and Pringles (along with other snack lines). The company's pet-food business (which includes the Iams brand) could also be put on the auction block.

Duracell could fetch as much as $4.1 billion (in after-tax proceeds) at auction, while Braun could attract up to $1.5 billion. The snacks and coffee units are both valued around $4.1 billion, while the pet-food business could be sold for $2 billion, Ms. Lieberman said.

Beth Gaston Moon is an analyst at Schaeffer's Investment Research.