Career
She experimented with foods native to the Philippines and formulated food products like calamansi nip, a desiccated and powdered form of calamansi that could be used to make calamansi juice, banana ketchup, and a powdered preparation of soybeans called Soyalac, a "magic food" preparation which helped save the lives of thousands of Filipinos, Americans, and other nationals who were held prisoner in different Japanese concentration camps during World World War World War II With her knowledge of local food properties, Orosa also made contributions in the culinary realm and taught proper preservation methods for native dishes such as adobo, dinuguan, kilawin and escabeche. Born on November 29, 1893 in Taal, Batangas and died on February 13, 1945, Maria Orosa was the fourth child among eight of Simplicio Orosa y Agoncillo and Juliana Ylagan. In commemoration, a street in Ermita, Manila (where the Philippine Court of Appeals is located), as well as a building in the Bureau of Plants and Industry has been named after her.
As part of celebrations marking the 65th anniversary of the Institute of Science and Technology, she was one of the 19 scientists conferred an award.
On November 29, 1983, the National Historical Institute installed a marker in her honor at the Bureau of Plant Industry in San Andres, Manila. In commemoration of her centennial anniversary, a postage stamp was issued by the Philippine Postal Corporation.
