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Ohmic Heating for Milk Pasteurization : Effect of Electric Current on Nonthermal Injury to Streptococcus thermophilus

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Title: Ohmic Heating for Milk Pasteurization : Effect of Electric Current on Nonthermal Injury to Streptococcus thermophilus
Authors: Sun, Huixian Browse this author
Kawamura, Shuso Browse this author →KAKEN DB
Himoto, Jun-ichi Browse this author
Wada, Tatsuhiko Browse this author
Keywords: milk
ohmic heating
electric current
nonthermal injur
Issue Date: 2006
Publisher: American Society of Agricultural and Biological Engineers (ASABE)
Journal Title: ASABE meeting paper
Start Page: No. 066025
Publisher DOI: 10.13031/2013.21471
Abstract: Abstract: Experiments on milk pasteurization were conducted with cells of Streptococcus thermophilus 21072 to confirm the lethal effect of electric current using combination treatment (sublethal ohmic and conventional heating treatment) and control treatment (conventional heating treatment only). Bacteria counts and calculated decimal reduction times (D value) of combination treatment indicated that combination treatment had significantly higher lethality than that of control treatment under the condition of the same temperature histories (p<0.05). However, no pasteurizing effect of the electric current on bacteria cells was observed during the sublethal ohmic treatment. The results suggested that sublethal ohmic treatment decreased the heat resistance of bacteria probably due to nonthermal injury of bacteria caused by the electric current.
Description: Written for presentation at the 2006 ASABE Annual International Meeting Sponsored by ASABE
Rights: Technical presentations are not subject to the formal peer review process by ASABE editorial committees; therefore, they are not to be presented as refereed publications. Citation of this work should state that it is from an ASABE meeting paper. EXAMPLE: Author's Last Name, Initials. 2006. Title of Presentation. ASABE Paper No. 06xxxx. St. Joseph, Mich.: ASABE.
Type: article
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 川村 周三

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