Influence of rotational speed on the statistical variability of heat penetratio...

• Author(s): Smout, C. ; Ávila, I. ; Van Loey, A.M.L. ; Hendrickx, M.E.G. ; Silva, C.
• Date: 2000
• Persistent ID: http://hdl.handle.net/10400.14/6928
• Origin: Veritati - Repositório Institucional da Universidade Católica Portuguesa
• Subject(s): Heat penetration; Non-uniformity; Lethality; Retort; Rotation
• Document Type: Article
• Language: English

Description

In a case study on white beans, the e ect of rotation on the statistical variability of heat penetration parameters and on the nonuniformity of lethality in industrial-scale retort processing was investigated. In addition, the in¯uence of process time on the nonuniformity of lethality was evaluated. No clear relation between the non-uniformity of the heating parameters and the rotational speed was observed. Rotation seemed to in¯uence process lethality variability throughout the retort by its e ect on non-uniformity in heating characteristics and in retort temperature. Absolute non-uniformity (i.e. standard deviation) increased with increasing holding time, whereas relative non-uniformity (i.e. coe cient of variation) decreased as holding time increases