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Luiz Pereira Barretto

Luiz Pereira Barretto, Brazilian farmer, physician, philosopher, sociologist and agronomist (Resende, Rio de Janeiro 11 January 1840 – São Paulo 11 January 1923)
Corresponded with many European wine experts and became renowned viticulturist
Developed Bourbon coffee variety

Discovered beneficial properties of guarana devising a processing method to produce guarana syrup and a recipe of guarana soda (1905). This recipe of soda guarana was improved by Pedro Baptista de Andrade and is marketed under the name Guarana Antarctica