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Occurrence and migration of synthetic phenolic antioxidants in food packaging materials: Effects of plastic types and storage temperature.
Sci Total Environ
January 2025
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China; School of Environment and Health, Jianghan University, Wuhan 430056, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China.
Synthetic phenolic antioxidants (SPAs) are widely used in food packaging materials to extend product shelf life. Not much attention has been paid to high molecular weight SPAs (HMW SPAs) so far, despite their potential health risks. In this study, we first analyzed the concentrations of ten HMW SPAs in food plastic packaging materials (including 6 plastic categories, n = 116).
View Article and Find Full Text PDFChanges in volatile, key odorants and bioactive properties of pomegranate juice during processing into concentrate.
Food Chem
January 2025
Department of Food Engineering, Faculty of Engineering, Cukurova University, 01330 Adana, Türkiye. Electronic address:
Key odorants of juices of pomegranate fruits of Hicaz variety obtained from different juice production stages (fresh: FrPJ, pasteurized: PPJ, filtered: FiPJ, and concentrated: CPJ) were examined. Processing significantly impacted the volatile compounds. The FrPJ and PPJ samples had higher concentrations of aroma compounds than the FiPJ and CPJ samples.
View Article and Find Full Text PDFActivation of locus coeruleus noradrenergic neurons rapidly drives homeostatic sleep pressure.
Sci Adv
January 2025
Department of Neuroscience, Helen Wills Neuroscience Institute, Howard Hughes Medical Institute, University of California, Berkeley, Berkeley, CA 94720, USA.
Homeostatic sleep regulation is essential for optimizing the amount and timing of sleep for its revitalizing function, but the mechanism underlying sleep homeostasis remains poorly understood. Here, we show that optogenetic activation of locus coeruleus (LC) noradrenergic neurons immediately increased sleep propensity following a transient wakefulness, contrasting with many other arousal-promoting neurons whose activation induces sustained wakefulness. Fiber photometry showed that repeated optogenetic or sensory stimulation caused a rapid reduction of calcium activity in LC neurons and steep declines in noradrenaline/norepinephrine (NE) release in both the LC and medial prefrontal cortex (mPFC).
View Article and Find Full Text PDFSphingolipid long chain bases as mediators of cell death in olive fruit abscission.
Physiol Plant
January 2025
Laboratory of Plant Physiology, Universidad de Extremadura, Badajoz, Spain.
Plant sphingolipids are lipophilic membrane components essential for different cellular functions but they also act as signaling molecules in various aspects of plant development. However, the interaction between plant sphingolipids and abscission remains largely uncharacterized. Here, the possible role of sphingolipids in regulating fruit abscission was examined in the abscission zone (AZ) of olive fruit.
View Article and Find Full Text PDFEffects of Intrauterine Isoproterenol Administration on Ovarian Follicular Development in Cows.
Vet Med Sci
January 2025
Department of Biochemistry, Faculty of Veterinary Medicine, Erzurum, Turkey.
Background: Isoproterenol (ISO) is a nonselective beta-adrenergic receptor agonist known for its vasodilatory effects. This experiment aims to investigate whether intrauterine ISO administration could alter vascular indices and follicular development in postpartum Holstein cows.
Objectives: The objectives are to evaluate the effects of intrauterine ISO administration on vascular changes and its impact on follicular development compared to placebo groups.
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