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Storage of Sugarbeet Roots in Controlled Atmospheres to Conserve Sucrose¹

Storage of sugarbeet (Beta vulgaris L.) root in controlled atmospheres showed no consistent effect of oxygen and carbon dioxide on raffinose, reducing sugar, or amino acid content in the varieties studied. Controlled atmosphere (CA) storage reduced the tendency of one variety to accumulate reducing sugars, but showed no consistent improvement in the other varieties tested

Carbon dioxide concentrations up to 10% had no beneficial effect on sucrose conservation or impurity accumulation. Although decreasing the oxygen content to 3 to 5% significantly reduced storage losses of sucrose in these experiments, large-scale studies will be required to determine if CA storage has any practical advantage over low-temperature storage in air.

Key Words: Raffinose • Reducing sugars • Amino acids • Sucrose

² Plant Physiologist, ARS, USDA, Crops Research Laboratory U.M.C. 63, Utah State University, Logan, Utah 84322.

Received for publication May 17, 1973.