Pérez-Gregorio M.R., Regueiro J., González-Barreiro C., Rial-Otero R., Simal-Gándara J. (2011) Changes in antioxidant flavonoids during freeze-drying of red onions and subsequent storage. Food Control 22:1108-1113

Abbreviation: PEREZ-GREGORIO 2011_01

Food Processing

This publication was used to obtain 14 retention factor values.

Retention Factor Food Before Processing Food After Processing Content Before Processing Content After Processing Units
0.94 Red onion Red onion - Frozen 33.79 31.92 mg/100 g fresh weight
0.90 Red onion Red onion - Frozen 21.97 19.97 mg/100 g fresh weight
0.75 Red onion Red onion - Frozen 0.08 0.06 mg/100 g fresh weight
0.90 Red onion Red onion - Frozen 0.1 0.09 mg/100 g fresh weight
0.66 Red onion Red onion - Frozen 0.03 0.02 mg/100 g fresh weight
0.85 Red onion Red onion - Frozen 0.07 0.06 mg/100 g fresh weight
0.75 Red onion Red onion - Frozen 0.04 0.03 mg/100 g fresh weight
0.10 Red onion Red onion - Freeze-dried 33.79 42.91 mg/100 g fresh weight
0.11 Red onion Red onion - Freeze-dried 21.97 29.96 mg/100 g fresh weight
0.11 Red onion Red onion - Freeze-dried 0.08 0.11 mg/100 g fresh weight
0.06 Red onion Red onion - Freeze-dried 0.1 0.08 mg/100 g fresh weight
0.14 Red onion Red onion - Freeze-dried 0.03 0.05 mg/100 g fresh weight
0.12 Red onion Red onion - Freeze-dried 0.07 0.1 mg/100 g fresh weight
0.21 Red onion Red onion - Freeze-dried 0.04 0.1 mg/100 g fresh weight