Maria Gomes Valentim attributes her longevity to eating a daily roll of bread for breakfast along with fruit though she indulges in the occasional nip of wine.
Guinness said that Valentim, aged 114 years and 313 days, is 48 days older than the world's former oldest human, Besse Cooper from Monroe, Georgia.
Cooper now holds the title of the oldest living North American.
Guinness verified that Valentim was born on July 9, 1896, in Carangola in the southeastern state of Minas Gerais, where she has always lived.
Known as "Grandma Quita," Valentim's family says she has a stubborn streak and has always made a habit of minding her own business. They also say her own father lived to be 100.
"She says she has lived long because she has always taken care of her own life and not the life of others," granddaughter Jane Ribeiro Moraes, 63, told a local newspaper.
Moraes added that Valentim has a great affection for feijoada, Brazil's national dish, a hearty bean stew with various cuts of salted pork meat and chicken empada pastries "with a lot of hot sauce."
Craig Glenday, editor in chief of Guinness World Records, said Valentim represents an unprecedented feat for Brazil.
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