NEW JOURNAL OF CHEMISTRY
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2019
·Vol. 43
·期 20
·7646-7652
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IF 3.069
Xiaolei Guo,Jin Zhang,Yanshuai Cui,Shengfu Chen,Haotian Sun,Qinghua Yang,Guanglong Ma,Longgang Wang,Jianxin Kang
The development of stable and biocompatible palladium nanoparticles (Pd NPs) catalysts has been drawing great interest. In this study, Pd NPs were prepared through a green method, where jujube polysaccharide (JP) was employed as both reducing and stabilizing agents for the first time. The JP stabilized palladium nanoparticles (Pdn-JP NPs) displayed small size, high stability, good biocompatibility and excellent catalytic efficiency. Pd50-JP NPs showed high stability up to two weeks in solutions of a wide pH range (4–9). Pd50-JP NPs showed negligible cytotoxicity against HeLa cells at a high concentration of up to 400 μg mL−1. Furthermore, Pdn-JP NPs showed excellent catalytic activity for reduction of 4-nitrophenol (4-NP) in the presence of sodium borohydride (NaBH4). The normalized rate constant (knor) and turnover frequency (TOF) of Pd50-JP NPs were as high as 38.4 s−1 mM−1 and 4455 h−1, respectively. The prepared Pdn-JP NPs will have various potential applications in bio-related catalysis in the future.
研究领域:
材料科学
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生物医学工程
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纳米技术
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DOI
高影响因子
SCIENTIA HORTICULTURAE
·
2019
·
IF 1.961
Yonghong Ge,Junhu Zhang,Canying Li,Wenjun Xue,Shiyu Zhang,Jingyi Lv
The purpose of this study was to evaluate the effects of trisodium phosphate (TSP) (0.5 g L −1 ) treatment on softening of harvested jujube fruit during storage at 20 ± 2 °C with a relative humidity of 50–55 %. The results showed that jujube fruit treated with TSP showed a higher firmness. The activity of pectin methylesteras, polygalacturonase, cellulase and β-glucosidase was also suppressed by TSP treatment. The results demonstrated that the content of water soluble pectin in jujube fruit treated with TSP was lower than in the control (dipped in distilled water) during storage. TSP treated fruits had higher pectin content than control fruits. The results of atomic force microscopy showed that water soluble pectin structure treated by TSP was denser compared with the control. Taken together, these results demonstrated that TSP could delay softening of jujube fruit by regulating cell wall-degrading enzymes activities and controlling the pectin substances.
研究领域:
食品科学
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植物生理学
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产品关联
DOI
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
·
2024
·
IF 6
Xiaolong Ji,Jin Chen,Ziran Li,Yan Meng,Xiaoqiong Li
Polysaccharides, a vital bioactive component of jujube ( Ziziphus jujuba Mill.), have shown considerable promise in enhancing studies on and the development of functional foods. In this paper, an in vitro digestive fermentation model was developed to explore the unique structural features, fermentation kinetics in feces, and effects on the gut microbiome and metabolic by-products of jujube polysaccharide (PZMP2). The results demonstrated that the digested PZMP2 was predominantly comprised of seven monosaccharides, with a relative molecular mass of 61.8 kDa. The overall concentration of total sugar, total reduction sugar and pH decreased while SCFAs increased significantly due to the utilization of PZMP2 after 48 h of fermentation. Furthermore, PZMP2 has been shown to stimulate the expansion of beneficial gut bacteria, particularly Firmicutes , Phascolarctobacterium , and Lachnoclostridium , while concurrently suppressing the growth of detrimental microbial species, such as Proteobacteria , Klebsiella , and Escherichia-Shigella . Bioinformatics analysis showed that PZMP2 could regulate host health through bile acid and amino acid metabolisms. In conclusion, PZMP2 functions as an intrinsic prebiotic factor that influences the equilibrium of intestinal microbiota and alters the profile of metabolic byproducts, and hence exerts a significant influence on the intestinal microbial environment.
研究领域:
食品科学
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微生物学
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营养学
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产品关联
DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES
·
2018
·
IF 2.441
Yao Li,Sheng Guo,Tingting Hua,Yanyan Wang,Dandan Wei,Ming Zhao,Shulan Su,Jin-ao Duan
The fruit of Ziziphus jujuba ( Jujubae Fructus ) has been used as food and crude drug for thousands of years. Although several chemical and biological studies have revealed triterpenic acid as the main bioactive constituent of Jujubae Fructus responsible for immune-regulatory activity, only few pharmacokinetic studies have been conducted. To comprehend the kinetics of triterpenic acids and promote their curative application, a sensitive and efficient ultra-performance liquid chromatography coupled with mass spectrometry method (UPLC-MS/MS) was established. UPLC-MS/MS was applied for the simultaneous determination of ceanothic acid, epiceanothic acid, pomonic acid, alphitolic acid, maslinic acid , betulinic acid , and betulonic acid in normal and immunosuppressed rat plasma samples. After sample preparation, chromatographic separation was performed on an Acquity UPLC BEH C 18 column (2.1 × 100 mm, 1.7 μm) with acetonitrile : methanol (1:1, v/v) and 0.5% ammonium acetate in water as mobile phase . The established method was validated and found to be specific, accurate, and precise for the seven triterpenic acids, and was successfully applied for the pharmacokinetic study of rat plasma samples. The results showed that the pharmacokinetic parameters (C max , T max , AUC 0–t , AUC 0–∞, and CLz/F) in the plasma samples of immunosuppressed rats were significantly different from those in normal rats, and might provide an insight for the clinical usage of triterpenic acids from Jujubae Fructus .
研究领域:
药理学
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分析化学
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中药学
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DOI
PubMed
高影响因子
BRAIN RESEARCH BULLETIN
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2025
·
IF 3.7
Zhen Zhang,Xinyue Che,Tingyu Feng,Juntao Zou,Guangpei Chen,Wenping Guo,Chunmei Ma,Haozhe Yuan,Jingying Chen,Xiaowu Xu
Objective Jujuboside A (JB-A) is the major component of Semen Ziziphi Spinosae (SZS), a traditional Chinese herbal medicine used to treat sleep with clinical efficacy. This is the first study to investigate the effects of JB-A on mitochondrial structure and function in the prefrontal cortex of the insomnia model mice. Methods Young adult C57BL/6 mice were induced to develop insomnia by P-chlorophenylalanine. After 14 d of JB-A treatment via gavage, anxiety level was assessed using the open field and elevated plus maze tests. Next, the mitochondrial metabolic activity and morphological changes in the prefrontal cortex of each group of mice, as well as their effects on mitochondrial membrane potential, oxidative phosphorylation levels, and cytochrome c (Cyt c) content in neurons were measured. Results In our mouse model, JB-A ameliorated anxiety-like behaviors; up-regulated the membrane potential (Δψm) and had a therapeutic effect on the metabolic activity and damaged microscopic structure of mitochondria in the prefrontal cortex; effectively improved mitochondrial function by increasing the expression of Cyt c oxidase I and IV proteins, ATPase activity, and ATP content; and reduced the accumulation of Cyt c in the neuronal cytoplasm while inhibiting mitochondrial permeability transition pore (mPTP) opening. Conclusions JB-A can improve insomnia by restoring mitochondrial intracellular oxidative phosphorylation, regulating mPTP to maintain mitochondrial homeostasis, and alleviating structural damage, providing a scientific basis for finding new targets for insomnia treatment.
研究领域:
神经科学
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药理学
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传统中医研究
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产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2021
·
IF 7.46
Guannan Liu,Dehao Kong,Jiayin Han,Ri Zhou,Yuan Gao,Zepei Wu,Lianjing Zhao,Chenguang Wang,Lijun Wang,Geyu Lu
Full-color luminescent carbon dots (CDs) possess enormous feasible applications in fluorescence sensing. However, the modulation of luminescent emission requires proper synthesis strategies with distinctive precursors to regulate the surface chemistry of the CDs. In this work, the full-color CDs were prepared with the same reactants by adjusting the reaction solvent to cover the entire spectral range. The factors that determined their luminescence caused by solvents were discussed. We found that CDs had a rapid sensing ability to Fe 3+ with a wide detection range and high accuracy. Moreover, the discriminant model of jujube species depending on internal Fe 3+ content was established successfully using principal component analysis and Bayesian discriminant analysis. This study provides a novel perspective for the preparation of full-color CDs by the same reactants and provides strong application potential in the identification of jujube species by a fluorescent sensor.
研究领域:
化学
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食品科学
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传感技术
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产品关联
DOI
高影响因子
Processes
·
2019
·Vol. 7
·期 9
·585
·
IF 1.963
Azhari Siddeeg,Muhammad Faisal Manzoor,Muhammad Haseeb Ahmad,Nazir Ahmad,Zahoor Ahmed,Muhammad Kashif Iqbal Khan,Abid Aslam Maan,Xin-An Zeng,Al-Farga Ammar
The current study was aimed to observe the influence of pulsed electric field (PEF) on the extraction of bioactive components; antioxidant activity and physicochemical properties of date palm fruit extract (DPFE) as compared to the extract untreated by PEF. The fruit was treated with PEF (frequency: 10 Hz, time: 100 µs, pulses number: 30, electric field strength (EFS): 1, 2, and 3 kV/cm. The results show that PEF has a positive impact on the total content of carotenoids, anthocyanins, flavonoids, and phenolics by increasing the EFS. DPFE treated with PEF exhibit a strong antioxidant activity as compared to untreated extract, while electrical conductivity, pH values, and titratable acidity were not affected by PEF. The results indicate a notable increase in the volatile components in DPFE treated with PEF at 3 kV/cm. Thus, PEF treatment can assist the ethanolic extraction of DPFE to improve the bioactivity and antioxidative activity. These findings suggest that PEF can be a more suitable technique to enhance solvent extraction on a commercial basis.Keywords:dates;PEF;bioactive compounds;antioxidant activity;ethanolic extraction
研究领域:
食品科学
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植物化学
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DOI
高影响因子
FOOD RESEARCH INTERNATIONAL
·
2025
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IF 8
Guohe Chen,Wanling Xiao,Zhichao Lin,Mengzhen Xia,Yajie Xue,Jing Zhang,Sudu Bao,Junye Zhu,He Xie,Jianan Huang,Zhonghua Liu,Chao Wang
Abstact The jujube-like aroma is widely regarded as a noble aroma of Pu-erh tea (PET), but the key odor-active compounds remain unclear. Thus, the molecular sensory science approaches were used to decode the key odor-active compounds of PET with jujube-like aroma. Sixty-eight volatiles were identified in both PETs and jujube sample. Among them, 19 odor-active compounds were identified by relative odor activity value (ROAV) and Pearson correlation analysis. Aroma recombination experiment successfully reproduced the characteristic jujube-like aroma of PET. Omission experiments identified 17 aroma compounds have significant contributions ( p < 0.05), with 9 key odor-active compounds including 1-octen-3-ol, hexanal, etc. ( p < 0.001). This study elucidates the key odor-active compounds of jujube-like aroma in PET, to provide a theoretical reference for the targeting process regulation of the product.
研究领域:
食品科学
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植物学
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产品关联
DOI
PubMed
高影响因子
Journal of Food Measurement and Characterization
·
2017
·Vol. 12
·期 2
·967-973
·
IF 0.536
Liu Yong,Wei Shoulian,Wu Min,Yang Shuqiu
Ultrasonic and response surface methodology were used to extract phenolic compounds from date pits and optimize extraction parameters including ultrasonic time, solid to liquid ratio and ethanol concentration. A mathematical model of the three parameters for a high extraction yield was established. The results showed that all the extraction parameters and the interaction between solid to liquid ratio and ethanol concentration significantly affected the extraction yield. The optimized extraction parameters were ultrasonic time of 42 min, solid to liquid ratio of 1:46 g/mL, and ethanol concentration of 60%, under which the extraction yield was 8.26%. In vitro antioxidant activity and components of the phenolic compounds was investigated by the antioxidant tests and HPLC, respectively. The antioxidant assays of DPPH and ABTS free radicals, reducing power and total antioxidant capacity suggested that the phenolic compounds from date pits had a high antioxidant activity, and the HPLC analyses revealed that the extracts were mainly composed of seven phenolics.
研究领域:
食品科学
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植物化学
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产品关联
DOI
高影响因子
Journal of Cleaner Production
·
2019
·
IF 6.395
Yan Chen,Han Ding,Junkai Gao,Xi Tang,Yi Liu,Mouyuan Yang
A novel and efficient strategy was developed for increasing the thermal conductivity of shape-stable phase change materials (ss-PCMs) using in situ reduction of copper ions , and this strategy used carbon-based adsorbents to adsorb and reduce Cu 2+ to form copper microspheres (CMSs) on the surface of the adsorbents, which were then used as the matrix of polyethylene glycol (PEG). Jujube pit biochar (JPB), which was prepared from forestry and agricultural residues of jujube pit by a simple pyrolysis method, was used as the carbon-based adsorbent. The study results demonstrated that the thermal conductivity of jujube pit biochar-based ss-PCMs of PEG/CMS-JPB was 0.630 W/m K, which is a 125% increase over the value of PEG (0.280 W/m K), and PEG/CMS-JPB possessed a favourable phase change enthalpy of 108.2 J/g. Additionally, according to the thermogravimetric analysis (TGA), Fourier transform infrared (FT-IR), and X-ray diffraction (XRD) results, PEG/CMS-JPB possessed excellent thermal stability and had good chemical compatibility between PEG and the carrier. Therefore, the jujube pit biochar that was prepared using agricultural waste could be used as a favourable carrier in the preparation of ss-PCMs, and more importantly, this paper provides a new general approach for improving the thermal conductivity of ss-PCMs.
研究领域:
材料科学
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能源工程
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产品关联
DOI
高影响因子
EUROPEAN JOURNAL OF LIPID SCIENCE AND TECHNOLOGY
·
2023
·Vol. 125
·期 9
·2300009
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IF 2.7
Zhiming Liu,Ying Zheng,Bowen Yue,Yali Luo,Zhaoxin Cao,Jingyi Su,Xinyu Wang,Yan Zhang,Yifei Zhang,Bingxue Wang,Xiaoliang Cheng,Zhiyong Zhou,Xuemei Ge
Jujube peel pigment (JP), an ideal natural water-soluble pigment extracted from jujube peel, mainly consists of flavonoids and possesses a wide range of physiological activities. In this study, JP-loaded multivesicular liposomes (JP-MVL) were prepared using the double emulsification method. JP-MVL was characterized, and its encapsulation efficiency was determined using the UV-Vis method. Furthermore, the release behavior and antioxidant capacity of JP-MVL were evaluated in vitro. The results displayed in the structure of JP-MVL were spherical with internal vesicles; the average particle size of JP-MVL was 5.63 μm, and the zeta potential was −69.50 mV. Analysis of the release results indicated that the best-fitting models in PBS (Phosphate buffered saline pH 7.4) and 0.9% NaCl were the Higuchi and first-order kinetic models, respectively. The cytotoxicity of JP-MVL at the appropriate concentrations was negligible and had a good protective effect against UVB-induced photodamage.
研究领域:
药剂学
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生物化学
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皮肤科学
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产品关联
DOI
高影响因子
JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE
·
2018
·Vol. 56
·期 2
·754-762
·
IF 1.797
Siddeeg Azhari,Zeng Xin-An,Ammar Al-Farga,Han Zhong
The target of this research was to determine sugar profile, volatile compounds, minerals content and antioxidant properties of the Sukkari date flesh as methanolic and ethanolic extracts. Sukkari date showed sugar 78.32% (dry weight), while fibre, crude protein, ash and crude fat were 3.15, 3.01, 2.30 and 0.56, respectively. Glucose (51.80%), fructose (47.50%), while small amount sucrose, fucose and galacturonic acid were also detected. Potassium, calcium and magnesium were observed to be the predominant. Twenty-two components were identified; 5-Hydroxymethylfurfural was present in the highest amount (27.25%), followed by 4H-Pyran-4-one,2,3-dihydro-3,5-dihydroxy-6-methyl (9.45%). Total phenolic and flavonoid content of methanolic extract were 62.50 mg GAE/100 g and 3.20 mg CE/100 g, respectively, against 60.25 mg GAE/100 g and 2.90 mg CE/100 g respectively, for ethanolic extracts. Three assays including DPPH, reducing power and ABTS radical scavenging activities showed a good antioxidant activity of date palm extract. Sukkari date was observed to have good nutritional and antioxidant characteristics and can be utilize as potential nutrition.
研究领域:
食品科学
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植物化学
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营养学
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）