Oxfam International is reviewing its relationship with its ambassador Scarlett Johansson after she made a Superbowl TV ad for the Israeli company SodaStream International, which operates in the disputed West Bank.

Actor Johansson, who has been an ambassador for the charity since 2007, is set to star in a highly lucrative TV advert for SodaStream to be screened during the Superbowl on 2 February.

But Oxfam International has published a statement saying it believes that businesses operating in West Bank settlements perpetuate the ongoing poverty and denial of rights of the Palestinian communities that the charity works to support.

Oxfam said: “We have been engaged in dialogue with Scarlett Johansson and she has now expressed her position in a statement, including stressing her pride in her past work with Oxfam.

“Oxfam is now considering the implications of her new statement and what it means for Ms. Johansson’s role as an Oxfam global ambassador.”

Oxfam maintains that it is opposed to all trade from Israeli settlements because they are illegal under international law.

In a statement to the Huffington Post, Johansson said that she “never intended on being the face of any social or political movement, distinction, separation or stance as part of my affiliation with SodaStream”.

She added: “I believe in conscious consumerism and transparency and I trust that the consumer will make their own educated choice that is right for them. I stand behind the SodaStream product and am proud of the work that I have accomplished at Oxfam as an ambassador for over eight years.

“Even though it is a side-effect of representing SodaStream, I am happy that light is being shed on this issue in hope that a greater number of voices will contribute to the conversation of a peaceful two-state solution in the near future.”

SodaStream has said its West Bank factory employs 550 Palestinians who are afforded the same benefits as Israeli workers and that the factory is just one of 25 based round the world.