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2008 Eduardo Blumwald (Determinants of Sugar and Acid)

Characterization of Determinants in Citrus Fruit Development and Identification of Key Processes Affecting Fruit Quality

Citrus fruit quality standards have been determined empirically, depending on species and on the particular growing regions. In general, the TSS (total soluble solids) to total acidity (TA) ratio determines whether citrus fruit can be marketed. The TSS/TA ratio in citrus fruits is dominated by two main components: (i) overall vacuolar juice cell acidity and the juice cell sugar content.