Technical and technological effects of changing texture properties of sugar beet – observations from recent campaigns and investigations

Recently, sugar beet processing at Südzucker factories has been increasingly challenged by unusual textural properties of fresh and stored beet, significantly impacting processability. These changes have led to pressing inefficiencies, sieve damage, blockages in cossette discharge chutes, and disruptions in pulp drying. Unproven but plausible links between altered beet texture and high-temperature drying difficulties – resulting in increased fire incidents – have also been noted. Investigations conducted by Südzucker, the ESST Scientific Committee, and the Institute for Sugar Beet Research confirm that beet variety, growth conditions, and storage environments influence textural changes. Case studies from multiple campaigns highlight that prolonged storage under warm conditions alters beet texture, increasing plasticity and reducing elasticity, which in turn affects pulp pressability and drainage. Excessive heat exposure has been linked to structural transformations in beet cells, leading to inefficient sugar extraction and increased sugar losses in molasses. The findings also indicate a possible correlation between prolonged high-temperature exposure, cell wall modifications, and mechanical properties of beet pulp. Further research is required to better understand the causes of these textural changes and their impact on processing. Given that such phenomena continue to arise unpredictably, modern analytical methods should be applied to reassess the relationships between beet texture, agronomic factors, and industrial processing efficiency.