… efforts to reduce carbon emissions. In early 2009, PepsiCo again announced it had partnered with the Carbon Trust to calculate the carbon footprint of its Tropicana-brand orange juice. … efforts to reduce carbon emissions. In early 2009, PepsiCo again announced it had partnered with the Carbon Trust to calculate the carbon footprint of its Tropicana-brand orange juice. … efforts to reduce carbon emissions. In early 2009, PepsiCo again announced it had partnered with the Carbon Trust to calculate the carbon footprint of its Tropicana-brand orange juice. …