DALTON TRANSACTIONS
·
2023
·Vol. 52
·期 36
·12958-12967
·
IF 4
Jiejun Pan,Guang Xu,Sixue Ren,Tingjie Xu,Dongrui Li,Mengxin Liu,Xinan Shi,Daocheng Pan
Rare earth-doped metal oxide thin films exhibit remarkable potential for application in anti-counterfeiting, owing to their exceptional fluorescent properties. However, the existing fabrication techniques for these rare earth-doped luminescent thin films are predominantly complex and necessitate high-temperature conditions. In light of this issue, we present a low-temperature method for in situ fabrication of luminescent Ca1−xMoO4:Eux3+ and Sr1−xMoO4:Tbx3+ nanocrystal thin films by a solution deposition process. The developed method has the advantages of simple operation, rapid and low-temperature synthesis. The optimal chemical compositions of molybdate-based luminescent films are Ca0.90MoO4:Eu0.103+ and Sr0.90MoO4:Tb0.103+. Moreover, we evaluate the practical feasibility of luminescent nanoparticle films in the field of anti-counterfeiting by combining the unique fluorescent properties of rare earth ions and designing customized fluorescent patterns.
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2023
·
IF 6.1
Xinmiao Wang,Qian Wang,Dong Cai,Xu Guo,Peiyong Tong,Fawen Yin,Xiaoyang Liu,Dayong Zhou
Phenolipids such as hydroxytyrosol-SCFA acyl esters (HTy-SEs) and tyrosol-SCFA acyl esters (TYr-SEs) with various alkyl chains lengths (C1–C4) and different isomers (branched-chain and straight-chain) were successfully synthesized. All esters were hydrolyzed by pancreatic lipase to produce polyphenols (HTy and TYr) and SCFAs (iso-butyric acid, acetic acid, propionic acid, and n-butyric acid). Moreover, HTy-SEs (and TYr-SEs) could also be hydrolyzed to free HTy (and TYr) and SCFAs by gut microbiota and Lactobacillus from mice feces. Especially, the hydrolysis rates showed positive correlation with the carbon skeleton length, and the hydrolysis degree (DH) of ester with a branched-chain fatty acid was weaker than that of ester with a straight-chain fatty acid. Besides, the DH values of TYr -SEs were significantly higher than those of HTy-SEs. Therefore, through regulating the structures of polyphenols, carbon skeleton lengths, and isomers, controlled-release of polyphenols and SCFAs from phenolipids will be easily achieved.
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FOOD RESEARCH INTERNATIONAL
·
2023
·
IF 8.1
Chun Lu,Zixuan Zhao,Guobao Huang,Jia Liu,Fayin Ye,Jia Chen,Jian Ming,Guohua Zhao,Lin Lei
Studies have shown that the structure, composition, and bioavailability of compounds in whole grains are affected by processing and the role of cells walls. In this study, the effects of different processing methods on highland barley, one of the mostly widely produced whole grains worldwide, were investigated. The processing methods applied were flaking-boiling (HB flake), sand-roasting (Puffed HB), and sand-roasting-milling (Tsamba). Results showed Puffed HB and Tsamba had higher levels of damaged starch content, starch short-range molecular order, and relative crystallinity than HB flake. The half-time of gastric emptying ( t 1/2 ) was the slowest for Tsamba (132.3 min) compared to HB flake (122.5 min) and Puffed HB (84.0 min), indicating the slowest gastric emptying rate, which could be attributed to its high viscosity of gastric digesta. After in vitro gastroduodenal digestion, Puffed HB exhibited the lowest starch digestibility and the least amount of β -glucan due to its less damaged cellular structure. Furthermore, Puffed HB resulted in a 21% and 18% higher in vitro production of total short-chain fatty acids than Tsamba and HB flake, respectively. Besides, undigested starch of Puffed HB after in vitro gastroduodenal digestion delayed in vitro fecal fermentation of β -glucan. Our study provided insight into the potential mechanisms of how cell wall integrity affected the gastric emptying, in vitro starch digestibility, and in vitro fecal fermentation of highland barley foods.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2023
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IF 5.2
Wenxiang Xie,Zhenyu Zhang,Xin Chen,Shiqiang Yu,Chunjing Shi,Hongxiu Zhou,Wei Wen
For obtaining a sub-nanometer surface, the material removal rate (MRR) is usually very low. It is challenging to achieve sub-nanometer surface with high MRR. To overcome this challenge, in this work, different cations are considered to improve the MRR during CMP for silicon (Si) wafer. When the concentration of NH 4 + ions is 125 mmol/L, the MRR of Si wafer reaches 1687 Å/min, increasing 107.8 % compared with the controlled group. It is noted that nanometer silica abrasives remain at a good monodisperse state in CMP. The surface roughness Sa after CMP on a Si wafer is 0.744 nm under a measurement area of 868 × 868 µm 2 . COF data and X-ray photoelectron spectroscopy indicate that NH 4 + ions reduce the electrostatic repulsion between silica nanoparticles and Si, whilst accelerating chemical reactions between Si and developed slurry. This work suggests a novel approach to fabricating sub-nanometer surface of Si wafer with high MRR, which is beneficial for the potential use in semiconductor and microelectronics industries.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2021
·
IF 6.953
Can Song,Feihong Huang,Linyu Liu,Quan Zhou,Dan Zhang,Qi Fang,Hui Lei,Hong Niu
Pectins have proven to be advantageous for human health as they regulate beneficial microbial communities and enhance immunity. The fruit of Clausena lansium (Lour.) Skeels (Wampee), also referred to as “treasure in fruit”, is rich in pectin polysaccharides . In this study, a homogalacturonan-type pectin (CCP2) with a molecular weight of 8.9 × 10 4 Da and degree of esterification of 42.86% was isolated from Wampee fruit. The gut microbiota regulation and phagocytosis-enhancing properties of CCP2 were examined in vivo and in vitro, respectively. Oral administration of CCP2 dramatically decreased the abundance of Bacteroidetes and increased the abundance of Firmicutes in intestinal bacteria in mice. The content of short-chain fatty acids in the feces also significantly improved. Moreover, CCP2 exhibited excellent phagocytosis-enhancing activities on RAW 264.7 macrophages. These results suggested that CCP2 could be a potential gut microbiota regulator and phagocytosis-enhancer, which could be used in food products to promote health through beneficial manipulation of gut microbiota.
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Food Chemistry-X
·
2021
·
IF 5.182
Si-Yuan Lu,Yang Liu,Shijie Tang,Wancong Zhang,Qiuyong Yu,Changqi Shi,Kit-Leong Cheong
Gracilaria lemaneiformis polysaccharide (GLP) has varieties of antioxidation, however, the therapeutic effects of GLP on ulcerative colitis (UC) and the potential mechanisms involved are still incomplete. In the study, the analysis of the ζ-potential, thermal, and morphology properties demonstrated that GLP was a negatively charged polymer, and had great thermostability and irregular network. Moreover, the GLP treatment has the effects of reducing the severity of colitis caused by dextran sulfate sodium by alleviating the colon damage of mice, and increasing the amount of short-chain fatty acids in the intestines, alleviating histopathological inflammation. The sequencing results and α-diversity analysis showed that GLP could improve biodiversity, restore the abundance of Bacteroidetes, and decrease the proportion of Firmicutes. The level of CCL-25 and CCR-9 were inhibited, CD40 and TGF-β1 were increased. In summary, GLP has potentiality to be utilized as a hopeful functional food to the UC patients.
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SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2021
·
IF 7.267
Yuxiang Wang,Yue Liu,Junye Tong,Xinan Shi,Lijian Huang,Zhenyu Xiao,Gang Wang,Daocheng Pan
Metal oxide charge transport layers (CTLs) are significant components for fabricating high-performance thin film solar cells. Generally, sol-gel methods have been widely used to deposit high-quality metal oxide CTLs, but they usually suffer from the choices of solvents, ligands and metal precursors . Here we report a general and facile ionic liquid ( n -butylammonium butyrate) approach to prepare V2O5, MoO3, WO3, NiO, ZnO and SnO2 thin films, which exhibits strong dissolving ability and good film-forming property. The thermal volatilization of ionic liquid is mild, which provides a slow and stable decomposition process of metal compounds and favors the formation of smooth and compact CTLs. All thin films are highly transparent in the visual range from the optical transmittance spectra and suitable to be CTLs in photovoltaic devices . Encouragingly, we have received the efficiencies of 15.06% and 13.38% based on the area of 0.09 and 1.21 cm 2 (NiO as the hole transport layer), and 19.13% and 16.71% based on the area of 0.09 and 1.21 cm 2 (SnO2 as the electron transport layer), which are obviously higher than those of devices prepared by traditional sol-gel methods.
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Aquaculture Reports
·
2021
·
IF 3.216
Yuan-Yuan Yao,Rui Xia,Ya-Lin Yang,Chen-Chen Gao,Feng-Li Zhang,Qiang Hao,Chao Ran,Zhen Zhang,Zhi-Gang Zhou
The growth performance of cultured aquatic animals is directly related to the economic benefit of the aquaculture industry. Quenching enzyme AiiO-AIO6 could degrade quorum sensing signal molecules N-acylhomoserine lactone (AHL), in this work, the effects of this AiiO-AIO6 on the growth of zebrafish was studied, the control group and AiiO-AIO6 additive group were set up with 120 fish in each group, and the feeding experiment was carried out for three weeks. The following results were obtained by observation of intestinal structure and morphology, quantitative PCR, gut microbes sequencing analysis and transfer, etc. The results showed that the final weight, weight gain rate and specific growth rate were significantly increased and feed conversion ratio and feeding rate of AiiO-AIO6 treated group were significantly decreased. Intestinal digestive enzyme assay showed that there was no significant difference in amylase, lipase and protease activities between the AiiO-AIO6 and control group. Hematoxylin and eosin (H&E) staining of intestinal morphology showed that the height of villus, the number of goblet cells and the height of columnar epithelial cells were significantly increased in the AiiO-AIO6 group. In addition, the relative expression levels of intestinal nutrient transporters Pept1a , GLUT2 and FATP1-a were also significantly increased. The analysis of intestinal microbiota structure and short-chain fatty acids showed that the addition of AiiO-AIO6 could change intestinal microbiota structure and increase the contents of acetic acid and isovalerate. The expression of growth-related genes in intestine, liver and muscle of two groups showed that growth hormone GH , GH receptor GHra , insulin-like growth factor IGF-I and myogenic factor Myf5 of AiiO-AIO6 group were significantly up-regulated. Results in the germ-free zebrafish model showed that the expression of growth-related genes was not directly regulated by AiiO-AIO6, but was mediated by the action of active intestinal microbiota. Overall, our data reflected that AiiO-AIO6 can promote the growth performance of zebrafish, and AiiO-AIO6 is a potential functional additive to make aquaculture efficient and high-yielding.
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2021
·
IF 5.279
Chu Wan,Kaizhang Wu,Xingyu Lu,Fang Fang,Yaqian Li,Yumin Zhao,Shubo Li,Jie Gao
This study aimed to find the best in vitro fermentation method by integrative analysis of the gut microbiota and metabolome. We selected five different media: brain heart infusion broth, Luria–Bertani broth, Mueller–Hinton broth, anaerobe basal broth, and anaerobic medium base (AMB). After in vitro fermentation, the gut microbiota and metabolites were analyzed at different culture times. The results showed that different culture media have different effects on the bacterial community structure and metabolites. The integrative analysis of gut microbiota and metabolism also proved that AMB medium is effective in keeping a stable bacterial community structure and producing less metabolites and short-chain fatty acids by simulating the nutrient-poor microenvironment in the human gut during in vitro fermentation. Thus, culturing with AMB medium for 48 h is the most suitable in vitro model for human gut microbiota fermentation, which provides an alternative approach for diet and health research.
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Polymers
·
2021
·Vol. 13
·期 22
·3906
·
IF 4.329
Guozhe Deng,Li Xie,Shengjia Xu,Xuejun Kang,Jizheng Ma
Short-chain fatty acids (SCFAs) are among the active metabolites in biological process both in the intestinal tract and the bioconversion of organic wastes, which has resulted in various human diseases and environmental problems. In order to accurately detect SCFAs, we introduced a novel extraction sorbent. Electrospun polyacrylonitrile (PAN) nanofiber membrane was synthesized, then poly (3, 4-Ethylenedioxythiophene) (PEDOT) was deposited onto the surface of electrospun PAN nanofibers by in situ polymerization. The morphology of the composite PAN/PEDOT nanofiber was characterized by scanning electronic microscopy (SEM) and FTIR spectrum. PAN/PEDOT was used to isolate and concentrate the SCFAs in waste water and fecal samples before gas chromatography mass spectrometry (GC-MS) analysis. The analytical method was evaluated systematically, and low limits of detection (LODs) of 0.34–0.87 μg/L and good linearity (R2≥ 0.9953) were obtained. The method was applied successfully for the determination of SCFAs in waste water and fecal samples, with good recovery (87.5–104.6%) and satisfactory reproducibility (relative standard deviation: 6.5–14.1%). The results indicated that the proposed method can be used as a potential approach for the determination of SCFAs with high sensitivity in waste water and biological samples.Keywords:adsorbent;conducting polymer;electrospinning;polyacrylonitrile;solid phase extraction
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JOURNAL OF CHROMATOGRAPHY A
·
2021
·
IF 4.759
Zhibo Fu,Qiangqiang Jia,Hongyang Zhang,Lu Kang,Xuezhi Sun,Min Zhang,Yuerong Wang,Ping Hu
As metabolites of the gut microbiome, short-chain fatty acids (SCFAs) played an important role in the diagnosis of the metabolic diseases. Because of the high polarity, high volatility and complex matrix of biological samples, the highly sensitive, selective and accurate method to determine SCFAs remains a major challenge. Herein, a new method for simultaneous quantification of eleven SCFAs by derivatization combined with solid phase microextraction (SPME) and gas chromatography tandem mass spectrometry (GC–MS/MS) was developed. Isobutyl chloroformate coupled with isobutanol was used as the reaction reagent to derivatize SCFAs. The method validation data showed a satisfactory linearity with the linear regression coefficients (R) ranging from 0.9964 to 0.9996. The limit of detection (LOD) of all SCFAs ranges from 0.01 ng·mL −1 to 0.72 ng·mL −1 and the limit of quantification (LOQ) ranges from 0.04 ng·mL −1 to 2.41 ng·mL −1 . The intra-day and inter-day precision (RSDs) ranged from 0.65% to 8.92% and 1.62% to 15.61%, respectively. The recovery ranged from 88.10% to 108.71%. Finally, the developed method was successfully used to determine SCFAs in mice fecal sample, and ten of the SCFAs were found in feces of mice, including formic acid.
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ENVIRONMENTAL RESEARCH
·
2021
·
IF 6.498
Xiang-Yu Li,Yue Feng,Jian-Lu Duan,Li-Juan Feng,Qian Wang,Jing-Ya Ma,Wen-Zong Liu,Xian-Zheng Yuan
The performance of anaerobic digestion is significantly governed by the concentration of volatile fatty acids (VFAs). Though the titration and near-infrared spectroscopy have been used to measure the VFAs in the digester , there is still lack of the establishment of on-line monitoring of VFAs in practical application. An effective quantification method based on mid-infrared (MIR) spectroscopy was developed, and used to measure the concentrations of VFAs in the anaerobic bioreactor nondestructively in parallel. The wavelet denoising (WD) spectra were used as the spectral preprocessing option. Compared with other pretreatment methods, the established calibration model built by WD spectra showed satisfactory results. Further, the model was verified using high performance liquid chromatography (HPLC), and predictions were made using real reactor effluent samples. Based on this theoretical work, a set of equipment for the in-situ online monitoring of VFAs was designed, which has high feasibility and effectively solves the problems with the current VFAs online monitoring process. These results provide a new solution for on-line monitoring of the anaerobic digestion, and have great potential for practical application.
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