PepsiCo Inc
cut its full-year earnings growth target on Thursday, citing higher commodity costs, a difficult economy and investments in emerging markets.

The results come a day after rival Coca-Cola Co surprised the market with sales volume increases in all of its segments.

The maker of Pepsi-Cola and Frito Lay snacks saw its shares fall 1.3 percent in premarket trading, despite posting fourth-quarter sales and earnings that beat Wall Street estimates.

PepsiCo Chief Financial Officer Hugh Johnston said the company expects commodity costs to rise 8 percent to 9.5 percent this year, but that PepsiCo will be careful not to raise prices too much to alienate consumers.

Morningstar analyst Phil Gorham noted that the company took on more exposure to commodity costs when it bought its two largest bottlers last year.

With the costs of sweeteners at multi-year highs, margin pressures are likely to remain until consumers become willing and able to bear the burden of rising costs, Gorham said in a research note.

PepsiCo said it now expects full-year earnings to grow 7 percent to 8 percent. In October it said it expected growth of 11 to 12 percent, compared with a prior forecast of 11 to 13 percent.

In the fourth quarter, PepsiCo's net income fell 5 percent to $1.37 billion, or 85 cents per share, from $1.43 billion, or 90 cents per share, a year earlier.

Excluding items, earnings were $1.05 per share, topping analysts' average estimate of $1.04 per share, according to Thomson Reuters I/B/E/S.

Its sales jumped 37 percent to $18.16 billion, helped by the acquisition last year of its two largest bottlers. Analysts were expecting revenue of $17.6 billion.

Fourth-quarter volume rose 2 percent for the Americas Foods business and 14 percent in the Americas Beverages business. Including PepsiCo's international businesses, total volume rose 3 percent in snacks and 12 percent in beverages.

Excluding added volume the company took on as part of its bottler acquisition, North American volume rose 1 percent, trailing the 3 percent growth seen by Coca-Cola, which gained market share.

PepsiCo shares fell 86 cents to $63.56 in premarket trading, from Wednesday's close of $64.42 on the New York Stock Exchange. Coca-Cola shares dipped 1 cent to $63.14

(Reporting by Martinne Geller, editing by Maureen Bavdek, Dave Zimmerman)