Commercial‐Scale Pulsed Electric Field Processing of Orange Juice

Effects of commercial-scale pulsed electric field (PEF) processing on the microbial stability, ascorbic acid, flavor compounds, color, Brix, pH, and sensory properties of orange juice were studied and compared with those of thermal processing. Freshly squeezed orange juice was thermally processed at 90 °C for 90 s or processed by PEF at 40 kV/cm for 97 ms. Both thermally processed and PEF-processed juices showed microbial shelf life at 4 °C for 196 d. PEF-processed juice retained more ascorbic acid, flavor, and color than thermally processed juice (P<0.05). Sensory evaluation of texture, flavor, and overall acceptability were ranked highest for control juice, followed by PEF-processed juice and then by thermally processed juice (P<0.01).

[1]  G. Sadler,et al.  Microbial, Enzymatic, and Chemical Changes During Storage of Fresh and Processed Orange Juice , 1992 .

[2]  T. Shellhammer,et al.  High-Pressure Processing of Orange Juice: Kinetics of Pectinmethylesterase Inactivation , 2001 .

[3]  G. Evrendilek,et al.  Microbial safety and shelf-life of apple juice and cider processed by bench and pilot scale PEF systems , 2000 .

[4]  Q. Zhang,et al.  An integrated PEF pilot plant for continuous nonthermal pasteurization of fresh orange juice , 1998 .

[5]  S. Nagy,et al.  An improved method to determine nonenzymic browning in citrus juices , 1988 .

[6]  E. M. Ahmed,et al.  Effect of selected oil and essence volatile components on flavor quality of pumpout orange juice , 1978 .

[7]  Dietrich Knorr,et al.  DEVELOPMENTS OF NONTHERMAL PROCESSES FOR FOOD PRESERVATION , 1992 .

[8]  T. Labuza,et al.  Time and Temperature Effect on Stability of Moroccan Processed Orange Juice during Storage , 1988 .

[9]  Javier Raso,et al.  Critical factors determining inactivation kinetics by pulsed electric field food processing , 2001 .

[10]  H W Yeom,et al.  Effects of pulsed electric fields on the quality of orange juice and comparison with heat pasteurization. , 2000, Journal of agricultural and food chemistry.

[11]  S. Mizrahi,et al.  SIMULATION OF ASCORBIC ACID STABILITY DURING HEAT PROCESSING AND CONCENTRATION OF GRAPEFRUIT JUICE , 1978 .

[12]  S Jeyamkondan,et al.  Pulsed electric field processing of foods: a review. , 1999, Journal of food protection.

[13]  Gustavo V. Barbosa-Cánovas,et al.  Inactivation of Mold Ascospores and Conidiospores Suspended in Fruit Juices by Pulsed Electric Fields , 1998 .

[14]  R. J. Braddock.  Handbook of Citrus By-Products and Processing Technology , 1999 .

[15]  D. B. Min,et al.  Optimization of Solid-Phase Microextraction Analysis for Headspace Flavor Compounds of Orange Juice , 1998 .

[16]  A. Yousef,et al.  Inactivation of Listeria monocytogenes in milk by pulsed electric field. , 1998, Journal of food protection.

[17]  J. Marcy,et al.  Factors Affecting Storage of Orange Concentrate , 1984 .