Effects of High-voltage Electrostatic Field (HVEF) and Ice-temperature on the Quality Changes of Lotus Root during Storage
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Abstract:
Effects of high-voltage electrostatic field(HVEF) and ice-temperature on browning and quality of lotus root (Nelumbo nucifera Gaertn) were investigated. The results showed that treatment with HVEF and storage at ice-temperature significantly inhibited the browning process of lotus root during storage. After stored for 28 d, the brown index was 7 (A410×10) and the decay index was 15% , significantly lower than those of control, and the products could maintain higher firmness (3 kgf/cm2) and soluble solids content (4%). In addition, after a 28-day storage, the respiratory intensity, ethanol content and total bacterial count were 50 mg/kg?H, 18 nmol/g and 5 CFU/g, respectively, which were significantly lower than those of the control. The results proved that the treatment could significantly inhibit the respiration rate, ethanol accumulation, microorganism growth and decay incidence.
