The oldest person in the world has died just weeks from her 115th birthday.

Brazilian woman, Maria Gomes Valentim, died of multiple organ failure, said Helerson Lima, a spokesman for the nursing home where she lived. Valentim would have turned 115 on July 9.

The oldest person in the world title now reverts to a woman in the United States.

An update on the Guinness World Records website said Valentim, "the first Brazilian super-centenarian to hold the title", died at the age of 114 years, 347 days.

Valentim was 48 days older than the person previously considered the world's oldest, Besse Cooper from Monroe, Georgia.

"With Maria's passing, the title of oldest living person reverts back to American Besse Cooper, age 114 years 299 days," the record book said.

Cooper’s son, Sid Cooper, said his mother was doing well at her Monroe retirement community.

"She's gained some weight, she's eating real good," he said. "Her memory is still really good. She remembers things from a long time ago and recognises people."

Guinness world Records verified that Valentim was born on 9 July 1896, in the city of Carangola in the south-eastern state of Minas Gerais, where she lived all her life.

Last month, Valentim, who was known as Grandma Quita, and whose father was 100 when he died, attributed her longevity to a healthy diet: eating a roll of bread every morning with coffee, fruit and the occasional milk with linseed.

Valentim's family told reporters she had a stubborn streak and always made a habit of minding her own business.

"She says she has lived long because she has always taken care of her own life – and not meddled in the lives of others," granddaughter Jane Ribeiro Moraes, 63, told a local newspaper in May.

Valentim married her husband, Joao, in 1913. He died in 1946. She is survived by four grandchildren, seven great-grandchildren and five great-great grandchildren. Her only son died aged 75 in the early 1990s.