Effects of Ohmic Heating on Microbial Counts and Denaturatiuon of Proteins in Milk
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- SUN Huixian
- Graduate School of Agricultural Science, Hokkaido University
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- KAWAMURA Shuso
- Graduate School of Agricultural Science, Hokkaido University
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- HIMOTO Jun-ichi
- Department of Foods Distribution, Rakuno Gakuen University
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- ITOH Kazuhiko
- Graduate School of Agricultural Science, Hokkaido University
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- WADA Tatsuhiko
- Graduate School of Agricultural Science, Hokkaido University
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- KIMURA Toshinori
- Graduate School of Agricultural Science, Hokkaido University
書誌事項
- タイトル別名
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- Effects of Ohmic Heating on Microbial Counts and Denaturation of Proteins in Milk
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The aim of this study was to compare the inactivation effects of ohmic heating (internal heating by electric current) and conventional heating (external heating by hot water) on viable aerobes and Streptococcus thermophilus 2646 in milk under identical temperature history conditions. The effects of the two treatments on quality of milk were also compared by assessing degrees of protein denaturation in raw and sterilized milk (raw milk being sterilized by ohmic heating or conventional heating). It was found that microbial counts and calculated decimal reduction time (D value) resulting from ohmic heating were significantly lower than those resulting from conventional heating. There was no difference in degrees of protein denaturation during the two treatments. The results suggested that ohmic heating had not only a thermallethal effect, but also a nonthermal-lethal effect on microorganisms, due to the electric current. Based on the results, we propose that ohmic heating can be effectively used to pasteurize milk with no additional protein deterioration.
収録刊行物
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- Food Science and Technology Research
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Food Science and Technology Research 14 (2), 117-123, 2008
公益社団法人 日本食品科学工学会
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詳細情報 詳細情報について
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- CRID
- 1390282679433413760
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- NII論文ID
- 10021184839
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- NII書誌ID
- AA11320122
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- ISSN
- 18813984
- 13446606
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- HANDLE
- 2115/33890
- 10659/1774
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- IRDB
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可