The hidden pathogens and history of the world's most common sap

The hidden pathogens and history of the world's most common sap
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In short: Beyond its role as a refreshing summer beverage or a precursor to rum, sugarcane juice carries a complex legacy. From 9th-century inscriptions to modern street stalls, this liquid has shaped global economies—and occasionally posed significant health risks through microscopic contaminants.

Sugarcane juice is extracted by crushing peeled stalks in mills or pressing machines, which can be human-powered, gasoline-driven, or electric. While it serves as a popular refreshing drink across Southeast Asia, the Indian subcontinent, North Africa, and South America, its history is deeply rooted in trade and industrial refinement. In Indonesia, records date back to a 9th-century inscription describing 'Nalaka Rasa.' However, large-scale profitability only arrived later; for example, it took until the 1790s for businessmen in New Orleans to successfully refine the juice into granulated sugar after earlier attempts by Jesuit priests failed due to high costs.

The beverage is culturally distinct across regions. In Egypt, it is known as 'asab,' often mixed with lemon and fermented; in Madagascar, it is fermented into an inexpensive alcoholic drink called 'betsa-betsa.' In Pakistan, the government officially declared sugarcane juice the national drink in 2019. Despite its popularity, the raw juice can be a vector for disease. It has been linked to leptospirosis and Chagas disease (via the pathogen Trypanosoma cruzi) in Brazil, as well as mycotoxins like aflatoxin B1 in Egypt.

Modern regulation also shapes how we perceive the drink. In the United States, the FDA prohibits the term 'evaporated cane juice' on food labels because it misleads consumers into thinking the sweetener is similar to fruit or vegetable juices. Instead, manufacturers are encouraged to use more accurate terms like 'cane sugar.' This highlights a tension between the beverage's natural origin and its industrial application as a primary precursor for products like rum.

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