Flame retardant modification of waterborne polyurethane fabric coating agent with high hydrostatic pressure resistance

2016 ◽  
Vol 97 ◽  
pp. 91-98 ◽  
Author(s):  
Jingjing Feng ◽  
Zhen Ge ◽  
Chunpeng Chai ◽  
Shengpeng Wang ◽  
Dehai Yu ◽  
...  
2019 ◽  
Vol 78 ◽  
pp. 171-178 ◽  
Author(s):  
Elisa Gayán ◽  
Nele Rutten ◽  
Jan Van Impe ◽  
Chris W. Michiels ◽  
Abram Aertsen

2013 ◽  
Vol 166 (1) ◽  
pp. 65-71 ◽  
Author(s):  
Dietrich Vanlint ◽  
Brecht J.Y. Pype ◽  
Nele Rutten ◽  
Kristof G.A. Vanoirbeek ◽  
Chris W. Michiels ◽  
...  

2003 ◽  
Vol 69 (10) ◽  
pp. 6307-6310 ◽  
Author(s):  
Noriyuki Igura ◽  
Yuya Kamimura ◽  
M. Shahidul Islam ◽  
Mitsuya Shimoda ◽  
Isao Hayakawa

ABSTRACT Among Bacillus subtilis IFO13722 spores sporulated at 30, 37, and 44°C, those sporulated at 30°C had the highest resistance to treatments with high hydrostatic pressure (100 to 300 MPa, 55°C, 30 min). Pressure resistance increased after demineralization of the spores and decreased after remineralization of the spores with Ca2+ or Mg2+, whereas the resistance did not change when spores were remineralized with Mn2+ or K+, suggesting that former two divalent ions were involved in the activation of cortex-lytic enzymes during germination.


2012 ◽  
Vol 75 (10) ◽  
pp. 1873-1877 ◽  
Author(s):  
LI WANG ◽  
JIAN PAN ◽  
HUIMING XIE ◽  
YI YANG ◽  
DIANFEI ZHOU ◽  
...  

The inactivation of the selected vegetative bacteria Escherichia coli, Listeria innocua, and Lactobacillus plantarum by high hydrostatic pressure (HHP) in physiological saline (PS) and in four fruit juices with pHs ranging from 3.4 to 6.3, with or without dissolved CO2, was investigated. The inactivation effect of HHP on the bacteria was greatly enhanced by dissolved CO2. Effective inactivation (>7 log) was achieved at 250 MPa for E. coli and 350 MPa for L. innocua and L. plantarum in the presence of 0.2 M CO2 at room temperature for 15 min in PS, with additional inactivation of more than 4 log for all three bacteria species compared with the results with HHP treatment alone. The combined inactivation by HHP and CO2 in tomato juice of pH 4.2 and carrot juice of pH 6.3 showed minor differences compared with that in PS. By comparison, the combined effect in orange juice of pH 3.8 was considerably promoted, while the HHP inactivation was enhanced only to a limited extent. In another orange juice with a pH of 3.4, all three strains lost their pressure resistance. HHP alone completely inactivated E. coli at relatively mild pressures of 200 MPa and L. innocua and L. plantarum at 300 MPa. Observations of the survival of the bacteria in treated juices also showed that the combined treatment caused more sublethal injury, which increased further inactivation at a relatively mild pH of 4.2 during storage. The results indicated that the combined treatment of HHP with dissolved CO2 may provide an effective method for the preservation of low- or medium-acid fruit and vegetable juices at relatively low pressures. HHP alone inactivated bacteria effectively in high-acid fruit juice.


2012 ◽  
Vol 1 (3) ◽  
pp. 101 ◽  
Author(s):  
Xuemei Li ◽  
Dong Zhao ◽  
Anjun Chen ◽  
Tiantian Lin ◽  
Biao Pu

<p>In this study, <em>Pickled Cowpea</em>, a typical lactic acid fermented vegetable in Sichuan, China, was used as samples to study both species and inactivation of baroduric bacteria isolated by HHP treatment under different pressure levels and different pressure holding time. 16S rDNA gene sequence, amplified using genomic DNA of 4 baroduric bacteria from <em>Pickled Cowpea</em> as templates, were sequenced and then were identified based on the sequence similarity and homology analysis, as <em>B. licheniformis</em>, <em>B</em>. <em>subtilis, B</em>. <em>sonorensis and B</em>. <em>pumilus</em>. The pressure resistance of the 4 strains are compared under pressure from 300 to 500 MPa with holding time from 3 to 25 min. <em>B</em>. <em>pumilus </em>which has higher pressure resistance can be selected as indicator bacteria for applying HHP treatment to <em>Pickle </em>production.</p>


2001 ◽  
Vol 67 (10) ◽  
pp. 4901-4907 ◽  
Author(s):  
Marianne Robey ◽  
Amparo Benito ◽  
Roger H. Hutson ◽  
Cristina Pascual ◽  
Simon F. Park ◽  
...  

ABSTRACT Several natural isolates of Escherichia coliO157:H7 have previously been shown to exhibit stationary-phase-dependent variation in their resistance to inactivation by high hydrostatic pressure. In this report we demonstrate that loss of the stationary-phase-inducible sigma factor RpoS resulted in decreased resistance to pressure inE. coli O157:H7 and in a commensal strain. Furthermore, variation in the RpoS activity of the natural isolates of O157:H7 correlated with the pressure resistance of those strains. Heterogeneity was noted in the rpoS alleles of the natural isolates that may explain the differences in RpoS activity. These results are consistent with a role for rpoS in mediating resistance to high hydrostatic pressure in E. coliO157:H7.


2020 ◽  
Vol 62 ◽  
pp. 287-297
Author(s):  
Elisa Gayán ◽  
Bram Van den Bergh ◽  
Jan Michiels ◽  
Chris W. Michiels ◽  
Abram Aertsen

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