The impact of low-frequency alternating magnetic field thawing (LF-MFT) on the physicochemical and gelling properties of porcine myofibrillar proteins (MP) was studied. Results showed that compared to atmosphere thawing (AT), LF-MFT helped in inhibiting the oxidation and denaturation of protein during thawing, thereby maintaining a superior MP gel (P < 0.05). In particular, LF-MFT-4 (LF-MFT at 4 mT) could decrease the oxidation of MP, which might be due to having a higher content of total sulfhydryl and less carbonyl of MP than other thawing treatments. The denaturation of MP was reduced since LF-MFT-4 led to less aggregation and degradation than AT. The gelling properties were also retained, and a compact and homogeneous network structure was formed after LF-MFT-4, resulting in excellent water retention. These findings suggested that LF-MFT-4 improved the gelling properties of MP by inhibiting its oxidation and denaturation, demonstrating a potential application of LF-MFT in meat thawing.
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http://dx.doi.org/10.1016/j.foodchem.2023.137337 | DOI Listing |
Neurorehabil Neural Repair
December 2024
Department of Physical Medicine and Rehabilitation, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan.
Background: Although various repetitive transcranial magnetic stimulation (rTMS) and theta burst stimulation (TBS) protocols are used, their comparative effectiveness for treating poststroke hemineglect remains unassessed.
Objective: To investigate rTMS and TBS effects on clinical outcomes in poststroke hemineglect through a systematic review and network meta-analysis.
Methods: We searched PubMed, EMBASE, and Cochrane Library databases up to March 7, 2024, for trials on rTMS or TBS in poststroke hemineglect.
Brain Stimul
December 2024
Department of Neurophysiology and Pathophysiology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, Hamburg 20246, Germany; Hamburg Center of Neuroscience, University Medical Center Hamburg-Eppendorf, Martinistr. 52, Hamburg 20246, Germany.
Background: Previous research has shown that temporal prediction processes are associated with phase resets of low-frequency delta oscillations in a network of parietal, sensory and frontal areas during non-rhythmic sensory stimulation. Transcranial alternating current stimulation (tACS) modulates perceptually relevant brain oscillations in a frequency and phase-specific manner, allowing the assessment of their functional qualities in certain cognitive functions like temporal prediction.
Objective: We addressed the relation between oscillatory activity and temporal prediction by using tACS to manipulate brain activity in a sinusoidal manner.
Biotechnol Prog
December 2024
Department of Electrical and Computer Engineering, University of Manitoba, Winnipeg, Manitoba, Canada.
Bulk electrical impedance spectroscopy (bio-capacitance) probes, hold significant promise for real-time cell monitoring in bioprocesses. Focusing on Chinese hamster ovary (CHO) cells, we present a sensitivity analysis framework to assess the impact of cell and culture properties on the complex permittivity spectrum, ε, and its associated parameters, permittivity increment, Δε, critical frequency, f, and Cole-Cole parameter, α, measured by bio-capacitance probes. Our sensitivity analysis showed that Δε is highly sensitive to cell size and concentration, making it suitable for estimating biovolume during the exponential growth phase, whereas f provides information about cumulative changes in cell size, membrane permittivity, and cytoplasm conductivity during the transition to death phase.
View Article and Find Full Text PDFHeliyon
December 2024
Guangdong Institute of Intelligence Science and Technology, Hengqin, Zhuhai, 519031, Guangdong, China.
Introduction: Transcranial electrical stimulation (tES), including transcranial alternating current stimulation (tACS) and transcranial direct current stimulation (tDCS), is widely studied for its potential to modulate brain oscillations and connectivity, offering treatment options for neurological disorders like Alzheimer's, Parkinson's, and insomnia. In this study, we focus on investigating the efficacy of tACS and tDCS in entraining intrinsic cortical network oscillations through a computational model.
Materials And Methods: We developed a 2D computational cortical neuron model with 2000 neurons (1600 pyramidal and 400 inhibitory), based on the Izhikevich neuron model.
Food Chem
December 2024
School of Tourism and Cuisine, Yangzhou University, Yangzhou 225127, China.
Using quantitative proteomics, the study investigated the effects of low-frequency alternating magnetic field-assisted freezing (LF-MFF) on the oxidative status and structural integrity of porcine myofibrillar proteins (MPs). LF-MFF, especially at 3 mT (LF-MFF-3) and 4 mT (LF-MFF-4), significantly reduced MPs' oxidation compared to refrigerator freezing (RF) (P < 0.05).
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