A US consumer has filed a lawsuit against PepsiCo in the US over the firm's Tropicana orange juice claims, according to reports.

California-based Angelena Lewis, has alleged that PepsiCo markets the orange juice brand as being '100% pure and natural' when she claims it is not, Reuters reported earlier this week. Lewis said that the company knows consumers "want and demand natural products", and therefore deceives them in its advertising and packaging.

She added that PepsiCo adds aromas and flavours to the juice that “change its essential nature" and give it a longer shelf-life.

"While Tropicana claims that 'making Tropicana orange juice is truly an art' it is far more a science," the complaint noted, according to Reuters. "The resulting product does not taste like fresh squeezed orange juice."

Tropicana's website says Pure Premium has 16 fresh-picked oranges squeezed into each 59oz container.

PepsiCo could not be immediately reached for confirmation or comment on the lawsuit.