Yulin Normal University

Although lychee peel extract (LPE) is rich in bioactive compounds, its potential for postharvest fruit preservation remains unexplored. We hypothesised that LPE would act synergistically with chitosan (CH) to delay mango ripening by simultaneously modulating cell wall integrity, pigment metabolism, and hormone signaling pathways. Here, we demonstrate that chitosan combined with lychee peel extract (CHL) delays mango ripening through a multi-targeted mechanism. Specifically, CHL outperformed chitosan alone by significantly suppressing peel yellowing, maintaining fruit firmness, and reducing decay over 12days of storage. Integrated transcriptomic and metabolomic analyses revealed that LPE reprogrammed ripening-associated pathways by (1) upregulating cell wall remodeling genes (CSLE1, XTH23) to stabilize pectin architecture, (2) retaining chlorophyll via suppressed CRTISO and PSY (carotenoid synthesis) and enhanced CHLP (chlorophyll biosynthesis), and (3) decoupling sugar-acid dynamics through γ-aminobutyric acid (GABA) and succinic acid accumulation. Notably, LPE attenuated ethylene-auxin- abscisic acid (ABA) crosstalk by downregulating ripening-specific transcription factors (ERF003, bZIPs) while activating stress-responsive WRKYs. These findings establish LPE as a sustainable alternative to synthetic preservatives, leveraging agricultural byproducts for eco-friendly fruit preservation.

Engineering bifunctional electrocatalysts featuring promoted adsorption for multiple intermediates and reactants via interface modulation strategies is critical for urea-assisted water splitting toward sustainable energy conversion. However, exploring efficient bifunctional electrocatalysts capable of driving both the hydrogen evolution reaction (HER) and urea oxidation reaction (UOR) at high current densities remains challenging. Herein, a self-supported bifunctional electrode is constructed on nickel foam, where the cooperative CoNi LDH is decorated with low-content Pt nanospheres (Pt-CoNi LDH/NF) for urea-assisted H 2 production. The strong metal-support interaction (SMSI) and multi-metal synergy collectively regulate the adsorption/desorption behavior of key reaction species, thereby lowering the energy barrier for the rate-determining step and improving overall catalytic efficiency. The optimized catalyst exhibits substantially reduced potentials of 1.32 V (UOR) and -30 mV (HER) to reach 10 mA cm -2 . A urea-assisted electrolytic cell merely requires 1.36 V to afford 10 mA cm -2 . Notably, in a practical anion-exchange membrane (AEM) electrolyzer configuration, the Pt-CoNi LDH/NF electrode maintains stable at 2 A cm -2 , while preserving high UOR/HER bifunctional activity. This study develops an integrated approach that couples urea-containing wastewater remediation with energy-efficient hydrogen production. The Pt-CoNi LDH/NF nanospheres catalyst fabricated via a corrosion-drop-anchoring approach shows superior activity and stability toward HER, UOR, and urea-assisted OWS. • The superhydrophilic/aerophobic nanostructure and interface engineering boost reaction kinetics. • Pt sites optimize H* adsorption for HER and Ni 2+ /Ni 3+ cycle for UOR, enabling bifunctional activity. • The assembled electrolyzer requires only 1.73 V to reach 1 A cm -2 .

This study aims to enhance the utilization value of corncob by efficiently extracting ferulic acid (FA) and <italic>p-</italic>coumaric acid (<italic>p</italic>CA) through environmentally sustainable methods. The research explores a novel approach that combines autohydrolysis pretreatment with the synergistic effects of xylanase SrXyn10AR and feruloyl esterase BpFae^T132C-D143C. By conducting comprehensive optimization through single-factor analysis and response surface methodology (RSM) experiments, the optimal processing conditions were established: corncob particles of 40–60 mesh size were subjected to autohydrolysis at 165 °C for 34 min with a solid-to-liquid ratio of 1:90.8, followed by enzymatic hydrolysis at 43 °C, 90 rpm, and pH 5.5 for 2.5 h, utilizing BpFae^T132C-D143C and SrXyn10AR enzymes at a concentration of 1.1 U/mL each. Under these refined conditions, the yield of FA and <italic>p</italic>CA soared to 63.42%, marking a 2.42-fold increase compared to pre-optimization levels. Furthermore, this process yielded xylooligosaccharides as a valuable co-product, with a yield of 303.31 mg/g. In conclusion, this study develops an efficient and environmentally friendly strategy for extracting phenolic acids from corncob. By leveraging autohydrolysis pretreatment combined with dual-enzyme hydrolysis technology, this approach can pave a new way for the value-added utilization of corncob resources.

This work focuses on the finite-time synchronization control (FTSC) for fractional-order chaotic systems (FOCSs) subject to uncertain dynamics, unknown parameters and input nonlinearities. In the control law design, the uncertain dynamics of the FOCSs are addressed by using fuzzy logic systems (FLSs), while the unknown control direction caused by unknown input nonlinearity is handled through applying the Nussbaum gain function (NGF) method. Parameter adaptive laws are derived to estimate the unknown parameters of the given FOCSs, the parameter vectors of the FLSs, and unknown bounded constants, respectively. By integrating these parameter-adaptive laws with the FT backstepping control framework and FO Lyapunov direct method, an adaptive fuzzy FTSC strategy is developed. This strategy ensures that the synchronization error (SE) can converge to a small neighborhood of zero (SNoZ) within a FT and all signals of the closed-loop system (CLS) remain ultimately bounded. In the end, three simulation cases are utilized to demonstrate the efficiency of the proposed control method.

The purpose of this paper is to investigate an abstract system, a combination of a nonlinear evolutionary differential inclusion and a first-order evolutionary variational-hemivariational inequality (EDVHVI, for short) in the framework of Banach spaces. The central idea of our present paper consists of four parts. Initially, we are concerned with the results on the existence of solutions and the properties which involve the boundedness and continuous dependence results of the solution set to an evolutionary variational-hemivariational inequality (EVHVI). Subsequently, the second goal further studies the existence of mild solutions to EDVHVI by employing the fixed point theorem. Next, the existence of pullback attractors for the multivalued processes driven by EDVHVI is investigated in a general setting. At the end, we give a specific application about a comprehensive dynamic system generated by partial differential inclusions with obstacle effect, which is shown to substantiate our theory towards the conclusions.