Acid and low temperature treatments on Salmonella Enteritidis inoculated in pork and its subsequent survival in simulated gastric fluid

ABSTRACT: The objective of this study was to evaluate the acid resistance of Salmonella enterica serovar Enteritidis (S. Enteritidis) in stored pork and in simulated gastric fluid (SGF). A culture of S. Enteritidis was subjected to acid treatment prior to inoculation into pork, stored under refrigeration at frozen temperatures and exposed to SGF. The S. Enteritidis CCS3 and ATCC 13076 strains previously subjected to acid treatment (at pH 4.0-5.0) were inoculated in pork and stored at 4°C and -18°C. Storage at 4ºC did not affect the populations of both S. Enteritidis strains. After 84 days at -18°C, the mean population of both CCS3 and ATCC strains were reduced by 0.8 and 1.5 log cycles, respectively. Prior acid treatment did not enhance the survival of both strains at low temperatures. After acid treatment and low temperature storage, S. Enteritidis ATCC 13076 lost culturability after being exposed to SGF for 10 minutes. In contrast, S. Enteritidis CCS3 was tolerant until three hours of SGF exposure. S. Enteritidis CCS3 submitted to pH 4.0 was more tolerant to SGF exposure than when submitted to pH 4.5, 5.0 and without acid treatment. Therefore, this study indicates that exposure to an acidic and cold environment during processing enhanced the ability of S. Enteritidis to survive in the gastric environment of the human stomach, possibly increasing the risk of a Salmonella infection after consumption of pork.

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Viability of Najawa carp (Cyprinus carpio L.) sperm at 4°C temperature storage

E3S Web of Conferences ◽

10.1051/e3sconf/202014701015 ◽

2020 ◽

Vol 147 ◽

pp. 01015

Author(s):

Dimas Fendy Pradana ◽

Ignatius Hardaningsih ◽

Dini Wahyu Kartika Sari

Keyword(s):

Low Temperature ◽

Cyprinus Carpio ◽

Sperm Viability ◽

Low Temperature Storage ◽

Progressive Motility ◽

C Storage ◽

Randomized Design ◽

Significant Difference ◽

Carp Cyprinus Carpio ◽

Temperature Storage

The objectives of this study were to evaluate the sperm viability of Najawa carp (Cyprinus carpio L.) in cryopreservation pre-conditions at 4°C. The design used in this study was Complete Randomized Design with 4 treatments, BSS as a control, 10% DMSO, 0,2 M Sucrose, and 5% DMSO + 0,1 M Sucrose; each consist of three replications. The parameters observed were progressive motility of fresh sperm, diluted sperm before low temperature storage, and 2 hours; 3 hours; 4 hours; 5 hours; one day; one week; a month after 4°C storage. The data were analyzed by ANOVA. The data showed that there was no significant difference between treatment (P>0.05). The best viability was 40.56% of sperm motility which survive for one week, it was achieved by 5% DMSO + 0,1 M Sucrose.

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Browning and quality management of pear fruit by salicylic acid treatment during low temperature storage

Journal of the Science of Food and Agriculture ◽

10.1002/jsfa.10692 ◽

2020 ◽

Author(s):

Trina Adhikary ◽

Parmpal S Gill ◽

Sukhjit K Jawandha ◽

Rachana D Bhardwaj ◽

Rahul K Anurag

Keyword(s):

Salicylic Acid ◽

Quality Management ◽

Low Temperature ◽

Acid Treatment ◽

Pear Fruit ◽

Salicylic Acid Treatment ◽

Low Temperature Storage ◽

Temperature Storage

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Impact of Emulsifiers Addition on the Retrogradation of Rice Gels during Low-Temperature Storage

Journal of Food Quality ◽

10.1155/2017/4247132 ◽

2017 ◽

Vol 2017 ◽

pp. 1-7

Author(s):

Zhe Yang ◽

Xue Han ◽

Huiying Wu ◽

Lijuan Zhang ◽

Lanwei Zhang ◽

...

Keyword(s):

Low Temperature ◽

Water Content ◽

Rice Flour ◽

The Other ◽

Low Temperature Storage ◽

C Storage ◽

Sodium Stearoyl Lactylate ◽

Gelatinization Properties ◽

Starch Retrogradation ◽

Temperature Storage

Rice and its products are widely consumed in Asian countries; however, starch retrogradation decreases the quality and shortens the shelf-life of rice foods particularly at low temperature. In this study sucrose ester (SE), glycerol monostearate (GMS), and sodium stearoyl lactylate (SSL) were added to rice flour and corresponding rice gels. Then, gelatinization properties, retrogradation characteristics, texture, and water content of these rice gels were investigated at 4°C and −20°C storage, respectively. The results demonstrated that the rice gels with 0.2% GMS had the lowest retrogradation index (ΔHr/ΔHg) (11.84%) and hardness (1359 g) at 4°C for a 10 d period, which was significantly lower in comparison to control and the other two emulsifiers (P<0.05). Adhesiveness and water content were increased compared to the other samples. Furthermore, the retrogradation of rice gels stored at 4°C was comparatively rapid compared to gels stored at −20°C. Gel samples stored at −20°C were still acceptable for more than 15 days. Thus it was revealed that GMS has the potential to retard starch retrogradation and produce high-quality rice products in preservation.

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RESPIRATION OF AZALEA FLOWER BUDS TREATED WITH LOW-TEMPERATURE STORAGE OR GIBBERELLIC ACID

Canadian Journal of Botany ◽

10.1139/b63-136 ◽

1963 ◽

Vol 41 (11) ◽

pp. 1547-1551 ◽

Cited By ~ 2

Author(s):

D. J. Ballantyne

Keyword(s):

Low Temperature ◽

Oxygen Uptake ◽

Gibberellic Acid ◽

Cold Storage ◽

Storage Period ◽

Flower Buds ◽

Low Temperature Storage ◽

C Storage ◽

Posttreatment Period ◽

Temperature Storage

The oxygen uptake of flower buds from Van der Cruyssen azaleas was measured while and after plants were treated with 45 days of 2 °C storage or with 7-weekly sprays of 500 p.p.m. gibberellic acid (GA). Respiration of the flower buds decreased during the cold-storage period. In contrast, respiration of the buds from both GA and cold storage treated plants was greater than that of control plants for the 2- to S-week posttreatment period. This increase reached a peak at the 3-week point.

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Hydration of Cuphea seeds containing crystallised triacylglycerols

Functional Plant Biology ◽

10.1071/fp06291 ◽

2007 ◽

Vol 34 (4) ◽

pp. 360 ◽

Cited By ~ 1

Author(s):

Gayle M. Volk ◽

Jennifer Crane ◽

Ann M. Caspersen ◽

David Kovach ◽

Candice Gardner ◽

...

Keyword(s):

Low Temperature ◽

Lipid Body ◽

Storage Conditions ◽

Protein Bodies ◽

Intermediate Type ◽

Low Temperature Storage ◽

C Storage ◽

Visual Damage ◽

Intermediate Storage ◽

Temperature Storage

Seeds that exhibit intermediate storage behaviour seem to die under conventional –18°C storage conditions. Cuphea wrightii A. Gray, C. laminuligera Koehne, C. carthagenensis (Jacq.) J.F. Macbr. and C. aequipetala Cav are considered sensitive to low temperature storage. The seeds of these species have triacylglycerols (TAG) that are crystalline at –18°C and melt when the seeds are warmed to >35°C. In contrast, seeds of tolerant species, C. lanceolata W.T. Aiton and C. hookeriana Walp., have TAG that crystallise at temperatures below –18°C and are fluid at 22°C. Cuphea seeds imbided while TAG are crystalline fail to germinate and exhibit visual damage. However, germination proceeded normally when dry seeds were warmed adequately to melt any crystalline TAG before imbibition. Reduced germination and cellular disruption including loss of lipid body compartmentation and fragmented protein bodies develop in seeds with crystalline TAG equilibrated to >0.1 g H2O g–1 DW. This damage cannot be reversed, even when seeds are dried before the damage can be visually detected. Results from this work reveal that the seeds of some species with intermediate type physiologies can be successfully placed into conventional –18 and –80°C storage facilities.

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USS 9% NICKEL STEEL

Alloy Digest ◽

10.31399/asm.ad.sa0166 ◽

1964 ◽

Vol 13 (8) ◽

Keyword(s):

United States ◽

Fracture Toughness ◽

Low Temperature ◽

Physical Properties ◽

Tensile Properties ◽

Nickel Steel ◽

Low Temperature Storage ◽

United States Steel Corporation ◽

Steel Corporation ◽

Temperature Storage

Abstract USS 9% Nickel Steel was specifically developed for low-temperature storage vessels operating down to minus 320 F. It is recommended for cryogenic service. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. Filing Code: SA-166. Producer or source: United States Steel Corporation.

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