
One subtle consequence of HLB disease is a decline in the natural sugar content, known as Brix, which measures the percentage of soluble solids (mostly sugars) in juice. In the 1960s, when FDA first set quality standards for orange juice through what is called a standard of identity, essentially a legal recipe that defines what a product must contain to be sold under a certain name, Florida oranges were high in sugar, averaging about 11.8° Brix. The 1963 standard of identity for pasteurized orange juice (POJ) required at least 10.5% soluble solids in the finished juice. For decades this was not a problem, as Florida was the dominant orange juice supplier and typically met that benchmark. But since 2010, average Brix levels have steadily fallen as HLB infection spread, and hurricanes battered groves. By the 2022–23 season, the average Florida orange tested around 9.7° Brix, below the current legal minimum for pasteurized OJ. In short, changing growing conditions have made it increasingly difficult to meet the minimum requirements under the old rules.
In recent years, meeting the 10.5° Brix standard has often required U.S. processors to blend in imported high-sugar juice or concentrate from countries like Brazil and Mexico. While this keeps products legally compliant, it reduces the share of U.S.-grown fruit in the final product, further shrinking the market presence of domestic oranges at a time when production is already at historic lows. This reliance on foreign inputs not only raises costs for processors but also accelerates the shift in supply and market share toward foreign competitors, making the U.S. more dependent on imports and less competitive globally.
Lowering the Brix standard would reduce the need for these high-Brix imports, helping to slow the widening orange juice trade deficit and retain more value within the domestic supply chain. For some processors, particularly grower-owned cooperatives, avoiding the expense of imported concentrate could mean the difference between operating at a loss or remaining viable to preserve jobs and processing capacity in rural areas.
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