Neurodegenerative diseases (NDDs) are mainly induced by oxidative stress which produces excessive reactive oxygen species (ROS). Quercetin (QU) is a potent antioxidant with some effects on NDDs. This study prepared and characterized a novel glucose-modified QU liposome (QU–Glu–Lip), aiming not only to overcome QU’s poor water solubility and bioavailability but also to deliver more QU to brain tissue to enhance its neuroprotective effect. QU–Glu–Lip possessed encapsulation efficiency (EE) of 89.9%, homogenous particle sizes (116–124 nm), small PDI value (<0.3), zeta value −1.363 ± 0.437 mV, proper pH and salt stability, and proper cytotoxicity. The glucose-modified liposome penetrated the blood–brain barrier (BBB) mediated via the glucose transporter 1 (GLUT1) and was taken by neuronal cells more efficiently than liposome without glucose, according to bEnd.3 and PC12 cell tests. QU–Glu–Lip attenuated H₂O₂-induced oxidative damage to PC12 with higher cell viability (88.42%) and lower intracellular ROS compared to that of QU. QU–Glu–Lip had higher brain target ability and delivered more QU to neuronal cells, effectively exerting the antioxidative neuroprotection effect. There is potential for the QU–Glu–Lip application for more effective treatment of NDDs.

Penthorum chinense Pursh (Penthoraceae) is a traditional herb used in Miao medical systems that is also processed into foods (e.g., tea products) in China. Different processing methods significantly affect the volatile compounds, phenolic constituents, and biological activities. This study aimed to produce P. chinense green tea leaves (GTL), black tea leaves (BTL), and untreated leaves (UL) to investigate differences in their flavor substances, functional components, antioxidant activity, alcohol dehydrogenase (ADH) activity, and acetaldehyde dehydrogenase (ALDH) activity. The results showed that 63, 56, and 56 volatile compounds were detected in UL, GTL, and BTL, respectively, of which 43 volatile compounds were identified as differential metabolites among them. The total phenolic content (97.13–179.34 mg GAE/g DW), flavonoid content (40.07–71.93 mg RE/g DW), and proanthocyanidin content (54.13–65.91 mg CE/g DW) exhibited similar trends, decreasing in the order of UL > BTL > GTL. Fourteen phenolic compounds were determined, of which gallic acid, (−)-epicatechin, and pinocembrin 7-O-glucoside showed a sharp decrease in content from UL to BTL, while the content of pinocembrin 7-O-(3″-O-galloy-4″, 6″-hexahydroxydiphenoyl)-glucoside and pinocembrin significantly increased. GTL showed better DPPH/ABTS^·+ scavenging ability and ferric-reducing ability than UL. The ADH and ALDH activities decreased in the order of GTL > UL > BTL. Therefore, tea products made with P. chinense leaves contained an abundance of functional compounds and showed satisfactory antioxidant and hepatoprotective activities, which are recommended for daily consumption.

While numerous bioactive polysaccharides have been identified from mushrooms, their mechanisms of action, particularly through the induction of oxidative stress in tumor cells, remain underexplored. This study isolates a novel polysaccharide, LSPS2, derived from Laetiporus sulphureus, followed by the elucidation of its distinctive structural features and specific antitumor activity in A549 lung carcinoma cells. LSPS2 was composed primarily of glucose (88.1%) and minor amounts of mannose (8.0%) and galactose (3.9%). Methylation and one-dimensional/two-dimensional nuclear magnetic resonance (1D/2D NMR) analysis results indicated that LSPS2 was composed of (1→3)-linked-D-β-glucopyran residues and (1→4)-linked-D-α-glucopyran residues as the main chain. The side chains were connected to O-6 and O-3 of glucopyranose (Glcp) residues with terminal Glcp. It differs from previous reports on L. sulphureus polysaccharides. Functionally, LSPS2 markedly suppressed A549 cell viability in a manner that depended on both exposure duration and concentration. LSPS2 upregulated malondialdehyde (MDA) and downregulated reduced glutathione (GSH), demonstrating that LSPS2 induces oxidative stress in A549 cells. The results of superoxide dismutase (SOD) activity assays further indicated that LSPS2 downregulates SOD activity, which may be the mechanism by which LSPS2 induces oxidative stress and, consequently, apoptosis in A549 cells. This targeted downregulation of a key antioxidant enzyme highlights a potential pathway for polysaccharide-induced tumor cell death. Our findings not only identify LSPS2 as a structurally distinct biopolymer but also elucidate its mode of action, underscoring its prospective application in tumor therapy and functional foods, warranting further investigation.

This study explores an innovative approach based on deep eutectic solvent (DES)-synergistic ultrasonic-assisted extraction (UAE) of anthocyanins from blueberry pomace (BP). Choline chloride–lactic acid (ChCl-LA, 1:2) was identified as the most efficient DES and provided the highest anthocyanin recovery. The optimal conditions for ChCl-LA-synergistic UAE (ChCl-LA-UAE) were obtained as follows: ultrasonic power of 270 W, extraction time of 30 min, liquid-to-solid ratio of 35:1, and water content in ChCl-LA of 40%, achieving a total anthocyanin content (TAC) of 3.5168 mg/g, with R² = 0.9860. This value was significantly higher than those obtained with 70% ethanol (3.1962 mg/g) and pure water (1.9137 mg/g). SEM images revealed that ChCl-LA-UAE disrupted the surface structure of the samples, thereby promoting anthocyanin release. COSMO-RS simulations confirmed that ChCl-LA significantly enhanced the interaction between the solvent and the representative anthocyanin (cyanidin-3-O-glucoside, C3G), resulting in higher extraction efficiency. In vitro antioxidant assays further demonstrated that the synergistic system exhibited stronger antioxidant activity. Overall, ultrasonic-synergistic DES extraction could be an eco-friendly method for recovering high-value compounds from blueberry and its byproducts.

Blueberry anthocyanins (BAs) exhibit strong antioxidant and lipid-regulating activities; however, their chemical instability and low oral bioavailability limit their practical application. In this study, two plant-based bilayer nanocarriers were developed using soybean lecithin as the lipid core and gum arabic (GA) or carrageenan (CGN) as the shell polysaccharide. The optimized systems achieved encapsulation efficiencies of 79.7% and 81.9%, respectively. Structural analyses showed that anthocyanins were stably incorporated into the carriers through multiple non-covalent interactions and transformed from a crystalline to an amorphous state. The two shell polysaccharides exhibited distinct conformation-dependent protective behaviors: GA provided better thermal protection, whereas CGN showed superior resistance to light, metal ions, ascorbic acid, and simulated intestinal digestion. After INFOGEST digestion, anthocyanin retention in the intestinal phase was 47% and 51% for the GA- and CGN-coated systems, respectively, and antioxidant activity was better preserved than in the free anthocyanin group. In an oleic-acid-induced HepG2 lipid accumulation model, the CGN carrier showed good biocompatibility and significantly enhanced the lipid-lowering effect of anthocyanins, with the most pronounced reduction in intracellular triglycerides. These results indicate that the CGN carrier has considerable potential for maintaining anthocyanin stability, modulating digestive behavior, and enhancing biological efficacy, and provide a reference for the design of plant-based delivery systems for bioactive ingredients.

The rising prevalence of neurodevelopmental, emotional, and behavioral disorders in children has prompted interest in dietary strategies that target neuroinflammation, oxidative stress, and gut dysbiosis. Blueberries (Vaccinium spp.) contain substantial amounts of anthocyanins and other neuroactive polyphenols that may confer neuroprotective effects. We summarize the literature published between 2016 and 2025 to examine how the bioactives in blueberries affect symptoms relevant to children with diagnosed neurodevelopmental or emotional–behavioral disorders, including ADHD, mood problems, and cognitive difficulties. Mechanistically, anthocyanins appear to modulate gut microbial composition, modulate neuroinflammation and alleviate oxidative stress via the Nrf2 pathway, and support synaptic plasticity and neurogenesis. Clinical trials, although limited in number and sample size, have reported modest improvements in mood and verbal memory in typically developing children and adolescents, with some gains in attention and executive function. However, direct trials in children with diagnosed neurodevelopmental or emotional–behavioral conditions remain scarce. There are substantial hurdles to translating these findings. Anthocyanins have poor physicochemical stability and low bioavailability, and routine food processing degrades their activity. Emerging solutions such as green extraction from agricultural by-products, colon-targeted microencapsulation, and zero-waste engineering could address these limitations. Rigorous randomized controlled trials in children with diagnosed neurodevelopmental or emotional–behavioral disorders are essential, as are advances in food engineering. Both are needed to move blueberry-based interventions from the laboratory to application.