Food Chemistry-X
·
2025
·
IF 8.2
Hui Xu,Jiameng Wang,Huijun Sun,Yixuan Xu,Zhongyun Zhao,Zongjun Wu,Mingming Zheng,Yibin Zhou,Yiqun Du,Zhenyu Yu
This study investigates the effects of soluble dietary fiber from large-leaf yellow tea (TSDF) on the physicochemical properties, in vitro digestibility, and 3D printing performance of buckwheat starch (BS). The results show that TSDF effectively inhibits short-term retrogradation of BS, reduces its crystallinity and short-range order, and does not form V -type complexes with BS. As the TSDF content increases, peak viscosity decreases, gelation temperature increases, and gelation enthalpy decreases from 13.93 J/g to 12.31 J/g. Additionally, TSDF reduces the digestibility of BS and promotes an increase in pore size and thickening of pore walls in the colloidal structure. A moderate amount of TSDF (0.3 %) improves the 3D printing accuracy of BS. This study provides new insights for dietary fiber-modified starch and its application in low glycemic index and 3D printed foods.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Food & Function
·
2025
·
IF 5.4
Yina Huang,Yao He,Yunjie Cai,Yubin Cheng,Xunmei Shi,Jingyu He,Kesheng Wu,Hua Wei
Black tea is commonly used for tea beverage production and has been shown to be an effective natural ingredient to prevent experimentally induced colitis. However, there is limited evidence to show whether black teas of different origins demonstrate similar anti-inflammatory capacity in colitic mice. In this study, mice were daily administered with black tea extracts of lapsang, keemun or dianhong for 1 week prior to receiving 4% dextran sulfate sodium for inducing colitis. Both the lapsang and keemun extracts exhibited better anti-inflammatory effects than dianhong extract, as evidenced by the former two tea extracts that enhanced intestinal barrier functions (up-regulation of MUC2 and ZO-1 and increased population of goblet cells), and decreased colonic and serum pro-inflammatory cytokines. We deduced that GC might be a key contributor to the anti-colitis effects of black tea, potentially through synergistic interactions with other components at an optimal ratio to enhance anti-inflammatory efficacy. Fecal microbiome analysis showed that gut microbiome was differentially modulated by lapsang and keemun extracts. Their anti-colitic effects were dependent on gut microbiome as shown by the loss of such protection in DSS mice treated with broad-spectrum antibiotics (ABX) for significant microbiome alterations. Mechanistically, colonic transcriptomic analysis showed the differential impact of lapsang and keemun extracts on colitis via modulating gene expressions of IL-17 pathway and glutamatergic synapse, respectively. Further qPCR and immunohistochemistry assays verified aforementioned pathway modulation. Together, our study provided a roadmap for understanding the effects of different black tea types on colitis and for providing potential directions on nutritional modulation of colitis.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2022
·
IF 5.304
Honglin Qin,Yuan Tao,Ruiting Niu,Bingyan Han,Lizhen Qiao
In this work, magnetic flower-like and fluorine-doped nickel oxide composites Fe 3 O 4 @SiO 2 @F/NiO were prepared and applied for the magnetic solid-phase extraction (MSPE) of five imidazole fungicides. The obtained materials were characterized by scanning electron microscopy, X-ray diffraction, energy-dispersive X-ray photoelectron spectroscopy and Brunauer-Emmett-Teller analysis to verify the successful synthesis. The effect of some experimental parameters on the extraction efficiency were explored to optimize the MSPE conditions, including the adsorbent dosage, ultrasonic time, salt concentration, sample solution pH, elution solvent type and volume. Then, method validation was performed under the optimal conditions in combination with high-performance liquid chromatography-ultraviolet detection. The determination coefficients ranged from 0.9956 to 0.9991, and the limits of detection and limits of quantification for the imidazole fungicides were 0.1–3 μg·L −1 and 0.3–10 μg·L −1 , respectively. Moreover, the intra-day and inter-day precisions were evaluated in three different concentrations with relative standard deviations in the range of 1.34 %-13.31 % and 4.96 %-13.92 %. At last, the proposed MSPE method was used to enrich and determine imidazole fungicides in tap water, milk and green tea samples, and the spiked recoveries were in the range of 77.93 %-119.38 %, demonstrating the potential of the method in the determination of imidazole fungicides from real samples.
✓ 已验证
产品关联
DOI
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
·
2023
·
IF 6
Xiao-Hua Zhang,Ren-Jun Liu,Jing-Jing Zheng,Xiang-Dong Qing,Kai-Long Yang,Ya-Qian Zhang,Le-Yuan Pan,Jin-Fang Nie
This study aimed to authenticate the production season of Xinyang Maojian green tea, and screen and identify its characteristic components through non-targeted metabonomics methods based on two-dimensional fingerprints combined with chemometric analysis. Firstly, two-dimensional fingerprints of spring and autumn teas were obtained through HPLC-DAD analysis to form a three-dimensional array (retention time × absorption wavelength × sample). Subsequently, the multiple co-elution peaks and spectral profiles in two-dimensional HPLC-DAD fingerprints were resolved by using alternating trilinear decomposition assisted multivariate curve resolution (ATLD-MCR) algorithm. We obtained the relative concentration matrix C (24 × 122), which was further used to distinguish the production season of Xinyang Maojian green tea through chemometric pattern recognition analysis. The evaluation results of both orthogonal partial least squares-discriminant analysis (OPLS-DA) and partial least squares-discriminant analysis (PLS-DA) models were better than those of PCA models, and could effectively distinguish the production season of Xinyang Maojian green teas. Moreover, 5 variables were selected through VIP method to build new UV-scaling and Par-scaling OPLS-DA models. In conclusion, the following characteristic components were identified in accordance with the analytical standards and published data: gallocatechin (GC), theobromine (THB), epigallocatechin gallate (EGCG), gallocatechin gallate (GCG), and epicatechin gallate (ECG).
✓ 已验证
产品关联
DOI
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
·
2023
·
IF 6
Huijun Wang,Jianxun Li,Chaoyang Zhang,Baoshan Sun,Yawen Zhou,Yanyan Zhou,Haiyu Zhao
Plucking position and harvest time influence the metabolites of vine tea which are closely related to the taste quality and antioxidant activity. In this study, 75 vine tea samples produced by three plucking positions and harvested in five months were analyzed by untargeted metabolomics, and in vitro and in vivo antioxidant activities of different vine teas were evaluated. 37 compounds were tentatively identified through various methods. Compared with the high-concentration results, VIP scores of the major components in the low-concentration model were much higher and were filtered as characteristic markers. Chemometrics analysis showed that plucking position had a stronger influence on vine tea quality than harvest time. 16 identified metabolites, including flavonoids, organic acids and catechins, were found to be responsible for the recognition of the plucking position. Vine tea infusion made of young green leaves exhibited higher scavenge radical activity in vitro , and tender tip leaves exhibited higher antioxidant activities in vivo zebrafish, which may be due to the presence of a higher concentration of flavonoids in their phytochemical profile. This research is anticipated to provide useful enlightenment for the effective utilization of vine tea resources.
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 10
·4693-4699
·
IF 3.925
Ziwei Ju,Heng Qian,Nianyou Pan,Yuting Huang,Qinqin Xu,Chen Yan,Wenfeng Zhou
In this study, a novel enhanced dispersive liquid–liquid microextraction method was developed for the determination of four pyrethroid insecticides (deltamethrin, etofenprox, bifenthrin and fenpropathrin) in tea infusions, based on solidified floating organic solvents containing [P4,4,4,12][PF6] generated in situ and a hydrophobic mixture of 1-chlorododecane and 1-dodecanol. Both the hydrophobic mixture and [P4,4,4,12][PF6] were used as extractants in this method. Several key factors, such as the solvent mixture dosage, the molar ratio of [P4,4,4,12]Br to KPF6, the reaction temperature and the added salt concentration, that affected the recovery were optimized. According to the results of spiked recovery experiments under optimized conditions, the recoveries of all four pyrethroid pesticides ranged from 81.2% to 103.7%, with relative standard deviation (RSD) values ranging from 2.2% to 5.1%. The limit of detection (LOD) values for deltamethrin, etofenprox, bifenthrin and fenpropathrin were 0.39 μg L−1, 0.47 μg L−1, 0.42 μg L−1 and 0.68 μg L−1, respectively. This method fully utilizes the advantageous characteristics of ionic liquids (ILs) and adds the extractant mixture simultaneously to the IL, making the whole experimental process environmentally friendly, efficient, simple and fast. Overall, this is an effective method for the detection of pyrethroid pesticide residues in tea infusions.
✓ 已验证
产品关联
DOI
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
·
2022
·
IF 6.056
Jirui Kun,Qing Meng,Chia-Cheng Wei,Guanhua Xie,Jingna Yan,Chi-Tang Ho,Huarong Tong
Cup aroma refers to the volatiles emitted from an empty cup after tea infusion. In this study, gas chromatography–olfactometry (GC–O) and the odor activity value (OAV) approach were employed to investigate the composition of fermented soybean-like cup aroma from raw Pu-erh tea. Further, the aroma recombination and omission tests were performed, and the results demonstrated that 2-methylbutyric acid, acetic acid, 4-methyl-3-penten-2-one, ethyl isobutyrate, nonanoic acid, and phenylacetic acid exhibited relatively high aroma intensities (AI) and OAVs among the 12 odor-active compounds that were detected in the fermented soybean-like cup aroma. The aroma recombination, which was performed employing the 12 odorants with AI ≥1 successfully mimicked the overall aroma profile of the fermented soybean-like cup aroma. The omission test revealed that 2-methylbutyric acid contributed significantly to the fermented soybean-like cup aroma. And the enantiomeric ratio (ER) of the ( S )- to ( R )-forms of 2-methylbutyric acid was 67:33.
✓ 已验证
产品关联
DOI
高影响因子
Food and Bioprocess Technology
·
2022
·Vol. 15
·期 12
·2683-2696
·
IF 5.581
Liu Jingbo,Cheng Dongkun,Zhang Deju,Han Lu,Gan Yiming,Zhang Ting,Yu Yiding
This study aimed to develop and characterize the chitosan-edible coating solution (CS-NH-TC) incorporated with ε-polylysine hydrochloride, tea polyphenols, nisin, and ascorbic acid and then investigate their effect on physicochemical, antibacterial, and sensory properties of marinated eggs stored at 4 °C for 24 days; marinated eggs without coating were set as control. The CS-NH-TC edible coating solution exhibited the lowest particle size (582.6 ± 16.6 nm) and polydispersity index (0.49) and highest zeta potential (30.96) among the coatings. The FT-IR spectra showed that TP, VC, nisin, and ε-PLH were successfully encapsulated in the CS edible coating solution. The moisture content and water-holding capacity of the marinated eggs coated with CS-NH-TC remained stable up to 20 days. Marinated eggs coated with CS-NH-TC edible coating solution exhibited lower total viable counts of microorganisms and more stable color and pH values compared to the control during the entire storage time. Furthermore, the texture and sensory evaluation results demonstrated that marinated eggs coated with CS-NH-TC edible coating solution had low degradation rate and improved overall acceptability scores. This study confirmed that CS-NH-TC edible coating solution was a promising coating for improving the quality and shelf life of marinated egg products and may have a broad application prospect in the preservation of other food products.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
2021
·Vol. 19
·期 1
·1-20
·
IF 10.435
Xu Shibo,Chang Linna,Hu Yanan,Zhao Xingjun,Huang Shuocheng,Chen Zhenhua,Ren Xiuli,Mei Xifan
Background Healing of MRSA (methicillin-resistant Staphylococcus aureus) infected deep burn wounds (MIDBW) in diabetic patients remains an obstacle but is a cutting-edge research problem in clinical science. Surgical debridement and continuous antibiotic use remain the primary clinical treatment for MIDBW. However, suboptimal pharmacokinetics and high doses of antibiotics often cause serious side effects such as fatal complications of drug-resistant bacterial infections. MRSA, which causes wound infection, is currently a bacterium of concern in diabetic wound healing. In more severe cases, it can even lead to amputation of the patient's limb. The development of bioactive nanomaterials that can promote infected wound healing is significant.Results The present work proposed a strategy of using EGCG (Epigallocatechin gallate) modified black phosphorus quantum dots (BPQDs) as therapeutic nanoplatforms for MIDBW to achieve the synergistic functions of NIR (near-infrared)-response, ROS-generation, sterilization, and promoting wound healing. The electron spin resonance results revealed that EGCG-BPQDs@H had a more vital photocatalytic ability to produce singlet oxygen than BPQDs@H. The inhibition results indicated an effective bactericidal rate of 88.6% against MRSA. Molecular biology analysis demonstrated that EGCG-BPQDs significantly upregulated CD31 nearly fourfold and basic fibroblast growth factor (bFGF) nearly twofold, which were beneficial for promoting the proliferation of vascular endothelial cells and skin epidermal cells. Under NIR irradiation, EGCG-BPQDs hydrogel (EGCG-BPQDs@H) treated MIDBW area could rapidly raise temperature up to 55 °C for sterilization. The MIBDW closure rate of rats after 21 days of treatment was 92.4%, much better than that of 61.1% of the control group. The engineered EGCG-BPQDs@H were found to promote MIDBW healing by triggering the PI3K/AKT and ERK1/2 signaling pathways, which could enhance cell proliferation and differentiation. In addition, intravenous circulation experiment showed good biocompatibility of EGCG-BPQDs@H. No significant damage to major organs was observed in rats.Conclusion sThe obtained results demonstrated that EGCG-BPQDs@H achieved the synergistic functions of photocatalytic property, photothermal effects and promoted wound healing, and are promising multifunctional nanoplatforms for MIDBW healing in diabetics.Graphical Abstract
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2021
·
IF 5.279
Yinyin Liao,Haibo Tan,Guotai Jian,Xiaochen Zhou,Luqiong Huo,Yongxia Jia,Lanting Zeng,Ziyin Yang
Tea (Camellia sinensis) is the most popular nonalcoholic beverage worldwide. During cultivation, tea plants are susceptible to herbivores and pathogens, which can seriously affect tea yield and quality. A previous report showed that (Z)-3-hexenol is a potentially efficient defensive substance. However, the molecular mechanism mediating (Z)-3-hexenol signaling in tea plants and the resulting effects on plant defenses remain uncharacterized. To clarify the signaling mechanisms in which (Z)-3-hexenol and light are involved, the gene transcription and metabolite levels were assessed, respectively. This study demonstrated that tea plants rapidly and continuously release (Z)-3-hexen-1-ol in response to an insect infestation. (Z)-3-Hexen-1-ol absorbed by adjacent healthy plants would be converted into three insect defensive compounds: (Z)-3-hexenyl-glucoside, (Z)-3-hexenyl-primeveroside, and (Z)-3-hexenyl-vicianoside identified with laboratory-synthesized standards. Moreover, (Z)-3-hexen-1-ol also activates the synthesis of jasmonic acid to enhance the insect resistance of tea plants. Additionally, a continuous light treatment induces the accumulation of (Z)-3-hexenyl-glycosides. Hence, (Z)-3-hexenol serves as a light-regulated signaling molecule that activates the systemic defenses of adjacent plants. Our study reveals the molecular mechanisms by which biotic and abiotic factors synergistically regulate the signaling functions of herbivore-induced plant volatiles in plants, providing valuable information for future comprehensive analyses of the systemic defense mechanisms in plants.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2021
·Vol. 138
·期 43
·51261
·
IF 3.125
Nouman Ali Shah,Yue Ren,Ri-Tong Lan,Jia-Cheng Lv,Rizwan M. Gul,Peng-Fei Tan,Shishu Huang,Lin Tan,Jia-Zhuang Xu,Zhong-Ming Li
Highly crosslinked ultrahigh molecular weight polyethylene (UHMWPE) stabilized by vitamin E (VE) is widely applied in artificial joints as the bearings. Despite the approval, there is a discord that VE lowers the crosslinking efficiency, limiting its use at high concentration. In this work, we aim to obtain highly crosslinked and oxidation resistant UHMWPE through the conjunction of tea polyphenol and chemical crosslinking. We hypothesized that highly incorporated tea polyphenol with multiple reactive sites can ameliorate crosslinking efficiency of chemical crosslinked UHMWPE in comparison to VE. Epigallocatechin gallate (EGCG) as representative tea polyphenol was incorporated into UHMWPE at high concentration (2–8 wt%), followed by chemical crosslinking with 2 wt% organic peroxide. Unlike VE/UHMWPE blends as the control, chemical crosslinking achieved an increasing trend in crosslink density of EGCG/UHMWPE blends with increasing antioxidant concentration. High concentration of EGCG also enhanced the oxidation stability of UHMWPE. Intriguingly, EGCG endowed UHMWPE with an excellent antimicrobial property, which was inefficient in VE/UHMWPE. Cell viability was hardly affected by the high loaded antioxidant and peroxide. The chemically crosslinked UHMWPE blended with EGCG is proved to be a reasonable, cost effective and realistic alternative for use in artificial joints.
✓ 已验证
产品关联
DOI
高影响因子
Analytical Methods
·
2021
·Vol. 13
·期 9
·1154-1163
·
IF 2.896
Chang Yin,Qianfen Zhuang,Qin Xiao,Yong Wang,Jianhua Xie
A ratiometric electrochemical sensor for caffeic acid (CAE) detection was constructed using a glassy carbon electrode modified with poly(methylene blue) and flower-like nickel-based metal organic frameworks (PMB@Ni–TPA/GCE). The electrochemical behavior of CAE was investigated at the PMB@Ni–TPA/GCE, and was found to follow a two-electron, two-proton electrooxidation process. PMB was used as the internal reference probe, and Ni–TPA can enhance the electrochemical signals of both CAE and PMB. As the CAE concentration increases, the oxidation peak current of CAE is enhanced but that of PMB keeps almost unchanged. The oxidation peak current ratio between CAE and PMB recorded by differential pulse voltammetry changes linearly with CAE concentration over the range of 0.25–15.0 μM, with a detection limit of 0.2 μM. The proposed sensor was successfully employed to evaluate the total polyphenolic content as CAE equivalent in chrysanthemum tea, and the results were comparable with those given by the reference Folin–Ciocalteu spectrophotometry.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）