Argon gas plasma to decontaminate and extend shelf life of milk

Sri B. Ponraj, Julie A. Sharp, Jagat R. Kanwar, Andrew J. Sinclair, Ladge Kviz, Kevin R. Nicholas, Xiujuan J. Dai

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Treatment of milk with argon gas plasma was investigated for its ability to kill bacteria and increase shelf life and compared with commercially pasteurized milk. The discharge was generated by a nanosecond pulse generator using the needle point-to-plate electrode. The total bacterial count of 6.8 log CFU/mL in raw milk was reduced to 1.9 log CFU/mL after 2 min of plasma treatment and 2.2 log CFU/mL after 30 min of pasteurization. The plasma treated milk stored at 4 °C showed no significant changes in the bacterial count for 6 weeks while the bacterial counts in pasteurized milk were significantly increased from 2.2 to 4.2 log CFU/mL after 2 weeks. These results demonstrated plasma treatment as an alternative way to decontaminate and increase shelf life of milk.

Original languageEnglish
Article number1600242
Number of pages8
JournalPlasma Processes and Polymers
Volume14
Issue number11
DOIs
Publication statusPublished - 1 Nov 2017

Keywords

  • argon plasma
  • bacteria
  • hydrogen peroxide
  • milk
  • shelf life

Cite this

Ponraj, Sri B. ; Sharp, Julie A. ; Kanwar, Jagat R. ; Sinclair, Andrew J. ; Kviz, Ladge ; Nicholas, Kevin R. ; Dai, Xiujuan J. / Argon gas plasma to decontaminate and extend shelf life of milk. In: Plasma Processes and Polymers. 2017 ; Vol. 14, No. 11.
@article{b267591c92874228ba53639ef5bf6ac8,
title = "Argon gas plasma to decontaminate and extend shelf life of milk",
abstract = "Treatment of milk with argon gas plasma was investigated for its ability to kill bacteria and increase shelf life and compared with commercially pasteurized milk. The discharge was generated by a nanosecond pulse generator using the needle point-to-plate electrode. The total bacterial count of 6.8 log CFU/mL in raw milk was reduced to 1.9 log CFU/mL after 2 min of plasma treatment and 2.2 log CFU/mL after 30 min of pasteurization. The plasma treated milk stored at 4 °C showed no significant changes in the bacterial count for 6 weeks while the bacterial counts in pasteurized milk were significantly increased from 2.2 to 4.2 log CFU/mL after 2 weeks. These results demonstrated plasma treatment as an alternative way to decontaminate and increase shelf life of milk.",
keywords = "argon plasma, bacteria, hydrogen peroxide, milk, shelf life",
author = "Ponraj, {Sri B.} and Sharp, {Julie A.} and Kanwar, {Jagat R.} and Sinclair, {Andrew J.} and Ladge Kviz and Nicholas, {Kevin R.} and Dai, {Xiujuan J.}",
year = "2017",
month = "11",
day = "1",
doi = "10.1002/ppap.201600242",
language = "English",
volume = "14",
journal = "Plasma Processes and Polymers",
issn = "1612-8850",
publisher = "Wiley-VCH Verlag GmbH & Co. KGaA",
number = "11",

}

Argon gas plasma to decontaminate and extend shelf life of milk. / Ponraj, Sri B.; Sharp, Julie A.; Kanwar, Jagat R.; Sinclair, Andrew J.; Kviz, Ladge; Nicholas, Kevin R.; Dai, Xiujuan J.

In: Plasma Processes and Polymers, Vol. 14, No. 11, 1600242, 01.11.2017.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Argon gas plasma to decontaminate and extend shelf life of milk

AU - Ponraj, Sri B.

AU - Sharp, Julie A.

AU - Kanwar, Jagat R.

AU - Sinclair, Andrew J.

AU - Kviz, Ladge

AU - Nicholas, Kevin R.

AU - Dai, Xiujuan J.

PY - 2017/11/1

Y1 - 2017/11/1

N2 - Treatment of milk with argon gas plasma was investigated for its ability to kill bacteria and increase shelf life and compared with commercially pasteurized milk. The discharge was generated by a nanosecond pulse generator using the needle point-to-plate electrode. The total bacterial count of 6.8 log CFU/mL in raw milk was reduced to 1.9 log CFU/mL after 2 min of plasma treatment and 2.2 log CFU/mL after 30 min of pasteurization. The plasma treated milk stored at 4 °C showed no significant changes in the bacterial count for 6 weeks while the bacterial counts in pasteurized milk were significantly increased from 2.2 to 4.2 log CFU/mL after 2 weeks. These results demonstrated plasma treatment as an alternative way to decontaminate and increase shelf life of milk.

AB - Treatment of milk with argon gas plasma was investigated for its ability to kill bacteria and increase shelf life and compared with commercially pasteurized milk. The discharge was generated by a nanosecond pulse generator using the needle point-to-plate electrode. The total bacterial count of 6.8 log CFU/mL in raw milk was reduced to 1.9 log CFU/mL after 2 min of plasma treatment and 2.2 log CFU/mL after 30 min of pasteurization. The plasma treated milk stored at 4 °C showed no significant changes in the bacterial count for 6 weeks while the bacterial counts in pasteurized milk were significantly increased from 2.2 to 4.2 log CFU/mL after 2 weeks. These results demonstrated plasma treatment as an alternative way to decontaminate and increase shelf life of milk.

KW - argon plasma

KW - bacteria

KW - hydrogen peroxide

KW - milk

KW - shelf life

UR - http://www.scopus.com/inward/record.url?scp=85034104886&partnerID=8YFLogxK

U2 - 10.1002/ppap.201600242

DO - 10.1002/ppap.201600242

M3 - Article

VL - 14

JO - Plasma Processes and Polymers

JF - Plasma Processes and Polymers

SN - 1612-8850

IS - 11

M1 - 1600242

ER -