Effect of ethanol adaption on the inactivation of Acetobacter sp. by pulsed electric fields

Niu, Debao; Wang, Lang‐Hong; Zeng, Xin‐An; Wen, Qing‐Hui; Brennan, Charles S.; Tang, Zhong‐Sheng; Wang, Man-Sheng

doi:10.1016/j.ifset.2018.11.009

Cited by 47 publications

(22 citation statements)

References 34 publications

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“…Among the mechanisms of pulsed electric field (PEF) extraction, the most popular and widely accepted are an electrical breakdown and the cell membranes' electroporation (Wang, Wang, et al., ; Zhang et al., ). The cells of the plants, animals, or microorganisms are susceptible to high‐voltage electric field (EF) pulses provisionally (Niu et al., ), which can induce the weakening of the lipid bilayer and the proteins of cell membranes (Zhang, Han, Zeng, & Wang, ). Furthermore, after being exposed to high PEF, plasma membranes become permeable to small molecules that induce swelling in the cell and finally separate the cell membrane (Wang, Zeng, Brennan, Brennan, & Han, ).…”

Section: Introductionmentioning

confidence: 99%

Effect of Pulsed Electric Field Pretreatment of Date Palm Fruits on Free Amino Acids, Bioactive Components, and Physicochemical Characteristics of the Alcoholic Beverage

Siddeeg

Zeng

Rahaman

et al. 2019

Journal of Food Science

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This research is aimed to observe the impact of pulsed electric field (PEF) application on the free amino acids, physicochemical characteristics, and bioactive components of alcoholic beverages processed from date palm fruits. The fruits were treated by PEF (frequency: 10 Hz, treatment time: 100 µs, pulses number: 40 µs for electric field: 1.38, 2.02, and 2.92 kV/cm, respectively). A significant increase (P < 0.05) in the total free amino acids and phenolic and flavonoid contents (2.92 > 2.02 > 1.38 kV/cm) was observed. There was a minor significant difference among the treated samples in the total soluble solid, alcohol, and total sugar contents, while there were no significant changes in the other parameters, including the color attributes. Practical Application This study observed whether PEF treatment has a positive impact on the processing of alcoholic beverages of date palm fruits. PEF was found to improve the bioactive components and nutritional value of alcoholic beverages processed from date palm fruits. This finding suggests that PEF can be a better technique to enhance the quality characteristics of date palm fruit alcoholic beverages.

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Section: Introductionmentioning

confidence: 99%

Effect of Pulsed Electric Field Pretreatment of Date Palm Fruits on Free Amino Acids, Bioactive Components, and Physicochemical Characteristics of the Alcoholic Beverage

Siddeeg

Zeng

Rahaman

et al. 2019

Journal of Food Science

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show abstract

Section: Introductionmentioning

confidence: 99%

“…Pulsed Electric Fields (PEF) technology is an emerging and promising non-thermal technique (Hong et al, 2016;Tian et al, 2018;Niu et al, 2019). It can quickly inactivate micro-organisms during the processing of foods and avoid additional food quality losses Niu et al, 2019). Currently, for the sake of increasing the lethality of PEF treatment, PEF has been combined with other treatment techniques, such as temperature, pH and antimicrobial utilisation (Chueca et al, 2015;Wang et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…The underlying mechanism of inactivation of microorganisms by PEF treatment is related to structural or functional damage of the membrane (Liu et al, 2017;Yun et al, 2017). Under external stress, cytomembrane acts as a major target for damaging and plays a significant role in separating cells from environment (Liu et al, 2017;Phan et al, 2017;Niu et al, 2019). The generation of pores of cytomembrane may be induced under sufficiently high electric fields (Liu et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…The generation of pores of cytomembrane may be induced under sufficiently high electric fields (Liu et al, 2015). Irreversible pores of cytomembrane can be caused by drastic electric field strength and lead to cell death (Saldaña et al, 2014;Niu et al, 2019). Despite the fact that a large number of studies on the electroporation of cytomembrane have been reported (Saldaña et al, 2014;Liu et al, 2017), the mechanism of PEF treatment to inactivation micro-organism is still not fully understood.…”

Section: Introductionmentioning

confidence: 99%

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Membrane fatty acids composition and fluidity modification in Salmonella Typhimurium by culture temperature and resistance under pulsed electric fields

Wang¹,

Yun

Zeng

et al. 2019

Int J of Food Sci Tech

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Summary Effects of various growth temperatures on cell membrane fatty acid composition of Salmonella Typhimurium (S. Typhimurium) and the resistance to Pulsed Electric Fields (PEF) treatments, as well as PEF combining with mild‐thermal (35, 45, 55 °C) treatments were investigated. Results indicated that the PEF resistance of S. Typhimurium at stationary phase was varied markedly at different growth temperatures. S. Typhimurium grown at 45 °C exhibited greater PEF resistance than cells grown at a lower temperature. Alteration of membrane fatty acid composition decreased in the unsaturated to saturated fatty acids ratio (UFA/SFA) and increased in cyclopropane fatty acids (CFA) proportion as growth temperature increased. It was found that the PEF resistance of S. Typhimurium at stationary phase was in a membrane fluidity dependent manner. Thermal combined PEF treatment improved the PEF lethality which indicated that the PEF resistance of S. Typhimurium was greatly affected by the fluidity of cytomembrane.

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Sensitivity of the C–H Stretching Band in Raman Spectra to Phospholipid Order

Zaytseva,

Okotrub,

Surovtsev

2024

J Raman Spectroscopy

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Phospholipid bilayers, which are a major component of cellular membranes and some drug delivery vehicles, can be in different states of order depending on the conformations of the hydrocarbon tails and their mutual arrangement. The important task of experimental characterization of phospholipid order is often addressed using Raman spectra of the C–H stretching bands. Such characterization uses some empirical relationships for apparent maxima in the spectra, although the origin of the sensitivity of the C–H band to phospholipid order and its model description remain unclear. Surely, a correct description of the sensitivity of the C–H band to phospholipid order is critical for its proper application. Here, we provide a description of the ordering sensitivity of the C–H stretching band using a polarized Raman experiment with hydrated aligned multibilayers of a saturated phospholipid. By this way, Raman contributions from symmetric and antisymmetric vibrations of CH2 were obtained in a model‐free manner. Experiments in a wide temperature range and the use of isotopic isolation helped us to consider separately the effects of conformational and lateral order of chains. The conformational sensitivity of the spectrum of antisymmetric vibrations was confirmed by DFT modeling. The outcomes of the study allowed us to provide recommendations for the use of the Raman spectrum of the C–H stretching band to characterize the conformational and lateral order of phospholipid‐containing materials.

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Effect of ethanol adaption on the inactivation of Acetobacter sp. by pulsed electric fields

Cited by 47 publications

References 34 publications

Effect of Pulsed Electric Field Pretreatment of Date Palm Fruits on Free Amino Acids, Bioactive Components, and Physicochemical Characteristics of the Alcoholic Beverage

Effect of Pulsed Electric Field Pretreatment of Date Palm Fruits on Free Amino Acids, Bioactive Components, and Physicochemical Characteristics of the Alcoholic Beverage

Membrane fatty acids composition and fluidity modification in Salmonella Typhimurium by culture temperature and resistance under pulsed electric fields

Sensitivity of the C–H Stretching Band in Raman Spectra to Phospholipid Order

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