A combination of TiO2–UV photocatalysis and high hydrostatic pressure to inactivate Bacillus cereus in freshly squeezed Angelica keiskei juice

LWT ◽  
2014 ◽  
Vol 55 (1) ◽  
pp. 104-109 ◽  
Author(s):  
Changhoon Chai ◽  
Jooyoung Lee ◽  
Younjung Lee ◽  
Sangyoul Na ◽  
Jiyong Park
Keyword(s):  
Hydrostatic Pressure ◽  
Bacillus Cereus ◽  
High Hydrostatic Pressure ◽  
Angelica Keiskei

Response of Bacillus cereus spores to high hydrostatic pressure and moderate heat

LWT ◽  
2008 ◽  
Vol 41 (10) ◽  
pp. 2104-2112 ◽  
Author(s):  
Xing-Rong Ju ◽  
Yu-Long Gao ◽  
Ming-Lan Yao ◽  
Yi Qian
Keyword(s):  
Hydrostatic Pressure ◽  
Bacillus Cereus ◽  
High Hydrostatic Pressure

scholarly journals High Hydrostatic Pressure Treatment Ensures the Microbiologi-Cal Safety of Human Milk Including Bacillus cereus and Preser-Vation of Bioactive Proteins Including Lipase and Immuno-Proteins: A Narrative Review

Foods ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1327
Author(s):  
Claude Billeaud
Keyword(s):  
Hydrostatic Pressure ◽  
Breast Milk ◽  
Human Milk ◽  
Bacillus Cereus ◽  
High Hydrostatic Pressure ◽  
High Temperature Short Time ◽  
C 30 ◽  
Human Milk Bank ◽  
Short Time ◽  
Better Than

Breast milk is the nutritional reference for the child and especially for the preterm infant. Breast milk is better than donated breast milk (DHM), but if breast milk is not available, DHM is distributed by the Human Milk Bank (HMB). Raw Human Milk is better than HMB milk, but it may contain dangerous germs, so it is usually milk pasteurized by a Holder treatment (62.5 °C 30 min). However, Holder does not destroy all germs, and in particular, in 7% to 14%, the spores of Bacillus cereus are found, and it also destroys the microbiota, lipase BSSL and immune proteins. Another technique, High-Temperature Short Time (HTST 72 °C, 5–15 s), has been tried, which is imperfect, does not destroy Bacillus cereus, but degrades the lipase and partially the immune proteins. Therefore, techniques that do not treat by temperature have been proposed. For more than 25 years, high hydrostatic pressure has been tried with pressures from 100 to 800 MPa. Pressures above 400 MPa can alter the immune proteins without destroying the Bacillus cereus. We propose a High Hydrostatic Pressure (HHP) with four pressure cycles ranging from 50–150 MPa to promote Bacillus cereus germination and a 350 MPa Pressure that destroys 106 Bacillus cereus and retains 80–100% of lipase, lysozyme, lactoferrin and 64% of IgAs. Other HHP techniques are being tested. We propose a literature review of these techniques.

scholarly journals Impact of Sorbic Acid on Germinant Receptor-Dependent and -Independent Germination Pathways inBacillus cereus

2011 ◽  
Vol 77 (7) ◽  
pp. 2552-2554 ◽  
Author(s):  
C. C. J. van Melis ◽  
M. N. Nierop Groot ◽  
T. Abee
Keyword(s):  
Signal Transduction ◽  
Amino Acid ◽  
Hydrostatic Pressure ◽  
Bacillus Cereus ◽  
High Hydrostatic Pressure ◽  
Sorbic Acid ◽  
Dipicolinic Acid ◽  
Acid Exposure

ABSTRACTAmino acid- and inosine-induced germination ofBacillus cereusATCC 14579 spores was reversibly inhibited in the presence of 3 mM undissociated sorbic acid. Exposure to high hydrostatic pressure, Ca-dipicolinic acid (DPA), and bryostatin, an activator of PrkC kinase, negated this inhibition, pointing to specific blockage of signal transduction in germinant receptor-mediated germination.

Inactivation of Bacillus cereus Spores by High Hydrostatic Pressure at Different Temperatures

2003 ◽  
Vol 66 (4) ◽  
pp. 599-603 ◽  
Author(s):  
SANGSUK OH ◽  
MYOUNG-JOO MOON
Keyword(s):  
High Pressure ◽  
Hydrostatic Pressure ◽  
Bacillus Cereus ◽  
High Hydrostatic Pressure ◽  
Sporulation Medium ◽  
Medium Ph ◽  
Effect Of Ph ◽  
High Hydrostatic Pressure Processing ◽  
Suspension Medium ◽  
Different Temperatures

The effect of pH on the initiation of germination and on the inactivation of Bacillus cereus (KCTC 1012) spores during high hydrostatic pressure processing (HPP) with pressures of 0.1 to 600 MPa at different temperatures was investigated. Two different high-pressure treatments were adopted to evaluate the effect of pH on the inactivation of B. cereus on sporulation medium and in suspension medium. Inactivation of B. cereus spores with HPP treatment was affected more by sporulation medium pH than by suspension medium pH. B. cereus spores obtained through sporulation at pH 6.0 showed more resistance to inactivation by HPP at 20, 40, and 60°C than did those obtained through sporulation at pHs of 7.0 and 8.0. Constituents of B. cereus spores obtained through sporulation at pH 6.0 may undergo electrochemical charge changes comparable to those for spores obtained through sporulation at pH 7.0. The initiation of B. cereus spore germination was more sensitive to pressure around 300 MPa at 20°C. Increasing processing temperatures during HPP enhanced the effect of sporulation medium pH (i.e., environmental pH) on the inactivation of B. cereus spores.

Effect of Olive Powder and High Hydrostatic Pressure on the Inactivation of Bacillus cereus Spores in a Reference Medium

2011 ◽  
Vol 8 (6) ◽  
pp. 681-685 ◽  
Author(s):  
Aurora Marco ◽  
Carmen Ferrer ◽  
Lina Maria Velasco ◽  
Dolores Rodrigo ◽  
Begoña Muguerza ◽  
...  
Keyword(s):  
Hydrostatic Pressure ◽  
Bacillus Cereus ◽  
High Hydrostatic Pressure ◽  
Reference Medium

scholarly journals Inactivation of Spores of Bacillus cereus in Cheese by High Hydrostatic Pressure with the Addition of Nisin or Lysozyme

2003 ◽  
Vol 86 (10) ◽  
pp. 3075-3081 ◽  
Author(s):  
Tomás J. López-Pedemonte ◽  
Artur X. Roig-Sagués ◽  
Antonio J. Trujillo ◽  
Marta Capellas ◽  
Buenaventura Guamis
Keyword(s):  
Hydrostatic Pressure ◽  
Bacillus Cereus ◽  
High Hydrostatic Pressure

Survival of mouse blastocysts after low-temperature preservation under high pressure

2004 ◽  
Vol 52 (4) ◽  
pp. 479-487 ◽  
Author(s):  
Cs. Pribenszky ◽  
M. Molnár ◽  
S. Cseh ◽  
L. Solti
Keyword(s):  
Phase Transition ◽  
Hydrostatic Pressure ◽  
Low Temperature ◽  
High Hydrostatic Pressure ◽  
Room Temperature ◽  
Freezing Point ◽  
Significant Loss ◽  
Embryo Cryopreservation ◽  
Subzero Temperatures ◽  
Survival Capacity

Cryoinjuries are almost inevitable during the freezing of embryos. The present study examines the possibility of using high hydrostatic pressure to reduce substantially the freezing point of the embryo-holding solution, in order to preserve embryos at subzero temperatures, thus avoiding all the disadvantages of freezing. The pressure of 210 MPa lowers the phase transition temperature of water to -21°C. According to the results of this study, embryos can survive in high hydrostatic pressure environment at room temperature; the time embryos spend under pressure without significant loss in their survival could be lengthened by gradual decompression. Pressurisation at 0°C significantly reduced the survival capacity of the embryos; gradual decompression had no beneficial effect on survival at that stage. Based on the findings, the use of the phenomena is not applicable in this form, since pressure and low temperature together proved to be lethal to the embryos in these experiments. The application of hydrostatic pressure in embryo cryopreservation requires more detailed research, although the experience gained in this study can be applied usefully in different circumstances.

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