Herein, the ultrasound-assisted extraction conditions affecting the yield of EUPS (Eucommia ulmoides polysaccharide) were analyzed using a Box-Behnken response surface design. The alleviation effect of EUPS on diquat-induced oxidative stress in mice was also studied. A maximum EUPS yield of 2.60% was obtained under the following optimized conditions: an extraction temperature of 63 °C, extraction time of 1 h, and ratio of liquid to raw materials of 22:1. EUPS exhibited strong 1,1-diphenyl-2-picryl-hydrazyl (DPPH) radical-scavenging ability (87.05%), 2′-Azinobis-(3-ethylbenzthiazoline-6-sulphonate) (ABTS) radical-scavenging ability (101.17%), and hydroxyl radical-scavenging ability (62.92%). The administration of EUPS increased the activities of superoxide dismutase, catalase, and glutathione peroxidase and decreased malondialdehyde levels in the livers of mice exposed to diquat. EUPS may inhibit the downregulation of NAD(P)H:quinoneoxidoreductase 1 and heme oxygenase 1 mRNA expression in the livers of diquat-administered mice through the Nrf2-Keap1 signaling pathway. Moreover, the abundance of Firmicutes and Ligilactobacillus was enhanced, whereas that of Helicobacter decreased in the gut of the remaining groups of mice compared with that of the diquat-treated mice. Therefore, EUPS exhibited an antioxidant effect and improved oxidative stress and intestinal flora abundance in mice.

This paper offers an exhaustive review of various pivotal aspects of forage whole-plant maize silage. It commences with an exploration of the foundational elements of planting, including the growing environment, variety selection, planting techniques, management practices, and harvesting considerations. The paper assesses the nutritional value of maize silage, its effects on animal health, and its current applications in livestock farming. Additionally, it elucidates the principles of fermentation, pathogen control, and the impact of fermentation technology on silage quality. The paper also discusses utilization strategies and technological advancements. A historical perspective is provided, alongside an analysis of current challenges, opportunities, and the global market positioning of maize silage. Furthermore, the paper delves into future prospects by addressing sustainable development strategies, adaptation to climate change, and ethical and economic controversies. The primary aim is to serve as a comprehensive reference for further research, production practices, and industrial chain development in the domain of forage whole-plant maize silage.

Food allergy represents a prevalent immunological disorder, with current clinical management primarily emphasizing allergen avoidance and emergency pharmacological intervention. Eucommia ulmoides polysaccharides, the principal bioactive constituents of the traditional Chinese medicinal plant Eucommia ulmoides, have demonstrated anti-inflammatory and antioxidant properties; however, their specific effects on food allergies remain inadequately characterized. A total of thirty-six female BALB/c mice were randomly allocated into three groups (n = 12 per group): the control group (CON group, receiving saline treatment), the allergic model group (OVA group, subjected to ovalbumin sensitization), and the intervention group (OVA+PS group, undergoing OVA sensitization followed by Eucommia ulmoides polysaccharides administration via gavage). The anti-allergic efficacy of Eucommia ulmoides polysaccharides was comprehensively evaluated through clinical allergy symptom scoring, histological and pathological tissue analysis, real-time fluorescence quantitative PCR (qRT-PCR) for the assessment of key gene expression, and 16S rDNA sequencing. The findings indicated the following: (1) The allergy scores in the OVA+PS group were significantly lower than those in the OVA group (p < 0.01). Following OVA stimulation, the rectal temperature of mice in the OVA group decreased sharply, whereas the temperature decline in the OVA+PS group was more gradual compared to the model group. (2) The liver, kidney, spleen, and intestinal tissues of mice in the OVA+PS group exhibited normal morphology, consistent with the CON group, which suggests that Eucommia ulmoides polysaccharides effectively mitigates the local inflammatory response induced by food allergy. (3) The expression of NICD in the spleen of mice in the OVA+PS group was significantly higher than in the OVA group (p < 0.05), while the expression of the Hes1 gene was significantly elevated in the OVA group compared to both the CON and OVA+PS groups (p < 0.05). In the OVA group, the expression level of Gata-3 was significantly elevated compared to both the CON group and the OVA+PS group (p < 0.05). Similarly, the expression of STAT5 in the OVA group was markedly higher than in the other groups (p < 0.05). (4) Eucommia ulmoides polysaccharides were found to modulate the intestinal microbiota composition in allergic mice, notably increasing the expression abundance of Enterobacter, Oscillibacter, and Butyricicoccus, while decreasing the expression abundance of Clostridium sensu stricto 1 and Turicibacter. (5) There was a correlation between alterations in the intestinal microbiota of mice and the expression of key genes. Specifically, the relative abundance of Blautia was negatively correlated with the expression of NICD and Gata-3 genes (p < 0.05), and the relative abundance of the Lachnospiraceae_FCS020_group was negatively correlated with the expression of the Hes1 gene (p < 0.05). In conclusion, Eucommia ulmoides polysaccharides demonstrate potential in alleviating allergic symptoms, providing a scientific foundation for the development of novel natural anti-allergic functional foods.

As an active ingredient in Eucommia leaf, aucubin (AU) is natural and safe, and studies have shown that aucubin (AU) demonstrates great potential in its anti-inflammatory, antioxidant, neuroprotective, and anti-osteoporotic properties. However, AU has been less studied in colitis. In this experiment, we used DSS-induced mice to establish a colitis model to investigate the ability of AU to alleviate colitis. The results show that, in animal experiments, AU increased body weight, reduced disease activity index (DAI) scores and organ indices, restored colon morphology, and increased superoxide dismutase (SOD), glutathione peroxidase (GSH-PX), and catalase (CAT) levels in mouse serum and colon. It also reduced malondialdehyde (MDA) levels, decreased the relative mRNA expression levels of inflammatory factors IL-1β, TNF-α, IL-18, MyD88, and NF-κB, and increased the relative mRNA expression levels of intestinal barrier-related genes OCLN, CLDN1, CLDN2, ZO-2, and MUC1. AU also upregulated the abundance of bacterial groups such as Bacteroidota, Firmicutes, and Verrucomicrobiota, and downregulated the abundance of bacterial groups such as Proteobacteria and Deferribacterota, thereby regulating the intestinal microbiota. In cell experiments, AU increased the relative mRNA expression levels of intestinal barrier-related genes MUC2, ZO-1, OCLN, and CLDN1, reduced the relative expression levels of inflammatory factors IL-1β and TNF-α, and increased the relative expression level of the anti-inflammatory factor IL-10. Additionally, AU significantly reduced the relative expression levels of IL-1β, IL-1R, MyD88, TAK1, IKKα, and RelA. This study provides a theoretical and technical basis for the large-scale preparation of aucubin and the alleviation of inflammatory bowel disease.

Deoxynivalenol (DON), a mycotoxin produced by Fusarium species, severely contaminates grains and feed, posing a continuous threat to human and livestock health. In this study, the DON-degrading enzyme (DDE) gene from Devosia sp. JA3 was heterologously expressed in Escherichia coli. Enzyme kinetics revealed that DDE exhibited optimal activity at 37 °C and pH 7.0, with a Km of 0.32 mM and a Vmax of 563.3 nmol/(min·mg). Under optimized conditions, DDE efficiently oxidized DON to 3-keto-DON, achieving a degradation rate of 82.51% within 12 h. Further investigation in C57BL/6J mice showed that oral administration of 2 mg/kg DON significantly reduced antioxidant capacity, caused liver damage, impaired intestinal barrier function, induced intestinal inflammation and apoptosis, and disrupted the gut microbiota. DDE treatment effectively alleviated these DON-induced effects by restoring antioxidant capacity, ameliorating liver injury, downregulating pro-inflammatory and apoptotic genes, upregulating barrier-related genes, and restoring the gut microbiota balance, thereby protecting intestinal health. These findings demonstrate DDE’s excellent DON-degrading capacity and biosafety, providing new technical evidence for DON detoxification applications.

The study aimed to investigate the effects of different levels of added sucrose on the fermentation quality and microbial community of kudzu (Pueraria lobata) silage. The three sucrose supplementation levels utilized were 0, 0.5, and 1.0%, and kudzu was silaged for 15, 30, and 60 days. Sucrose supplementation significantly decreased the pH levels, acid detergent fiber, ammonia nitrogen content, and relative abundance of Pantoea in the silages (p < 0.05). The addition of 1% sucrose to kudzu silage at 60 days had the lowest acid detergent fiber content, the highest crude protein, and the highest relative feed value. Additionally, the sucrose-supplemented silage had a lower pH than that of the control group at each time point. The dominant genera in all groups were Klebsiella, Enterobacteriaceae, Lactobacillus, and Weissella, and the relative abundance of Enterobacteriaceae was lower in the 1% sucrose-supplemented group than in the control group. These results showed that sucrose addition could improve the quality of kudzu silage and increase its beneficial microbial community.