VETERINARY RESEARCH COMMUNICATIONS
·
2024
·
IF 1.8
Zhang Wanjun,Tang Yutong,Fan Ruiqi,Zhang Fude,Li Yongchen,Zang Jianjun,Yang Wenjun,Wang Zongyi,Yuan Xiaoyan,Yang Yuan,Chen Yiqiang
Pesticide residues may enter the human body through the food chain when livestock and poultry consume pesticide-contaminated feed. Therefore, monitoring and limiting pesticide residues in animal feed and animal-origin foods is necessary. Carbendazim is one of the most frequently detected pesticides in food and feed and has various toxic effects on non-target animals. This study investigated the effects of varying concentrations of carbendazim contamination in feed on broiler chicken growth performance, serum biochemical indicators, histopathology, and carbendazim residues in broiler muscles and livers. The results demonstrated that contamination of 5–100 mg/kg carbendazim in feed did not affect broiler growth performance or health. Carbendazim contamination in feed at 200–800 mg/kg slightly reduced growth performance. Broiler kidneys showed minor histopathological alterations after 400 mg/kg carbendazim exposure. Furthermore, when the carbendazim content in feed was less than 25 mg/kg, the residual carbendazim in the muscles and livers of broilers did not exceed the maximum residue level set by the European Union and China. Based on the above findings, carbendazim residues in the feed of less than 25 mg/kg can be considered safe for chicken products.
研究领域:
动物科学
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毒理学
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食品安全
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产品关联
DOI
PubMed
高影响因子
ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES
·
2015
·
IF 0.541
N. N. Jiang,T. Xing,P. Wang,C. Xie,X. L. Xu
Effects of water-misting sprays with forced ventilation after transport during summer on meat quality, stress parameters, glycolytic potential and microstructures of muscle in broilers were investigated. A total of 105 mixed-sex Arbor Acres broilers were divided into three treatment groups: i) 45-min transport without rest (T group), ii) 45-min transport with 1-h rest (TR group), iii) 45-min transport with 15-min water-misting sprays with forced ventilation and 45-min rest (TWFR group). The results showed the TWFR group significantly increased (p<0.05) initial muscle pH (pH i ) and ultimate pH (pH u ) and significantly reduced L* (p<0.05), drip loss, cook loss, creatine kinase, lactate dehydrogenase activity, plasma glucose content, lactate and glycolytic potential when compared with other groups. Microstructure of the muscle from TWFR group broilers under light microscopy showed smaller intercellular spaces among muscle fibers and bundles compared with T group. In conclusion this study indicated water-misting sprays with forced ventilation after transport could relieve the stress caused by transport under high temperature, which was favorable for the broilers’ welfare. Furthermore, water-misting sprays with forced ventilation after transport slowed down the postmortem glycolysis rate and inhibited the occurrence of PSE-like meat in broilers. Although rest after transport could also improve the meat quality, the effect was not as significant as water-misting sprays with forced ventilation after transport.
研究领域:
畜牧学
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动物福利
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食品科学
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DOI
PubMed
高影响因子
JOURNAL OF CHROMATOGRAPHIC SCIENCE
·
2021
·Vol. 59
·期 5
·405-411
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IF 1.618
Decheng Suo,Xia Fan,Shulin Wei,Yang Li
A simple and sensitive method was proposed for choline, carnitine, acetylcarnitine (ACa) and acetylcholine (ACh) separation in feed, blood and urine of animals by using ion chromatography (IC) and detection by tandem mass spectrometry (MS/MS). Analytes were extracted using a mixture of acetonitrile and water, purified by C18 solid-phase extraction columns, separated via IC with an IonPac SCS-1 column and detected by an MS/MS detector by using isotopic internal standards for quantification. The effects of different chromatographic parameters on the separation were also investigated. Under optimal conditions, the recovery was >90%, with the relative standard deviations of <15%. The proposed method was highly reliable for the simultaneous determination of choline, carnitine, ACa and ACh in feed, blood and urine.
研究领域:
分析化学
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动物营养学
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生物化学
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DOI
PubMed
高影响因子
Catalysts
·
2018
·Vol. 8
·期 5
·200
·
IF 3.465
Shiying Han,Yunfei Liu,Jiang Li,Rui Li,Fulong Yuan,Yujun Zhu
A series of Pd-Ni bimetallic catalysts supported on SBA-15 (0.2%Pd-x%Ni/SBA-15, x = 0.4, 0.7, and 1.2) were prepared through the impregnation method combined with the NaBH4reduction method. X-ray diffraction (XRD), N2adsorption-desorption, X-ray photoemission spectroscopy (XPS) and transmission electron microscope (TEM) were used to characterize the prepared catalysts. All the synthesized catalysts were evaluated for the liquid-phase hydrogenation of cinnamaldehyde (CAL). The addition of Ni obviously enhanced the CAL conversion and selectivity of C=C hydrogenation to hydrocinnamaldehyde (HALD) over the 0.2%Pd-x%Ni/SBA-15 catalysts. Meanwhile, 0.2%Pd-1.2%Ni/SBA-15 showed the best performance with 96.3% conversion and 87.8% selectivity toward HALD. This improvement was attributed to the synergistic effect between the Pd and Ni nanoparticles, enhancing the dispersion of Pd metal particles and increasing the content of surface Pd0species. In addition, the influences of a few reaction factors including H2pressure, reaction temperature, and reaction time were studied over 0.2%Pd-1.2%Ni/SBA-15.Keywords:selective hydrogenation;cinnamaldehyde;hydrocinnamaldehyde;synergistic effect;Pd-Ni/SBA-15
研究领域:
催化化学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
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2022
·Vol. 57
·期 5
·3168-3182
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IF 4.682
Tian Fuping,Zhang Mengjie,Zhang Xinchi,Chen Xiao,Wang Jinliang,Zhang Yifu,Meng Changgong,Liang Changhai
Hydrogenation of cinnamaldehyde (CAL) to cinnamyl alcohol (COL) or hydrocinnamaldehyde (HCAL) with high selectivity has important industrial value. Previous studies have shown that nickel-based catalysts are highly active and favor the selectivity to HCAL. However, Ni in metallic state is so active that most of nickel-based catalysts need to be pre-reduced before use. In this paper, a stable Ni–C catalyst was prepared by simple pyrolysis of Ni-BTC and systematically characterized. The results showed that metallic Ni nanoparticles were uniformly dispersed and encapsulated in the carbon layer, which protects the metallic Ni from oxidation. Therefore, the Ni–C catalyst can be directly used in CAL hydrogenation without pre-reduction. The catalyst Ni-C-600 achieved 92.5% selectivity to HCAL at 96.2% conversion of CAL at 120 °C under 2 MPa H 2 for 6 h with a poor reusability in isopropanol (IPA), while the catalytic performance and reusability were evidently enhanced (HCAL selectivity ~ 94%, CAL conversion ~ 99% in five consecutive runs for 4 h) in a solvent containing water and IPA. This study provides a facile and low-cost method to prepare effective Ni-based catalysts displaying excellent catalytic activity with high HCAL selectivity and stable reusability in CAL hydrogenation. Graphical abstract
研究领域:
催化化学
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材料科学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2022
·
IF 7.139
Qianqian Zhang,Yifan Sun,Wei Li,Jinli Zhang,Yan Fu
Selective hydrogenation of α, β-unsaturated aldehydes has always been a hot research topic owing to favorable thermodynamics in C C hydrogenation. In this work, a series of Pd/SnO 2 nanocatalysts were facilely synthesized under mild conditions, via the reduction of Na 2 PdCl 4 by dimethylaminoborane. Under galvanostatic electrolysis at 3.33 mA cm −2 for 8 h, the selective conversion of cinnamaldehyde (CAL) was achieved over Pd/SnO 2 -coated carbon fiber in neutral phosphate buffer, giving the cinnamyl alcohol (COL) selectivity of 78.85% at the conversion of 84.88%. The Pd/SnO 2 nanocatalysts outperform commercial Pd/C catalysts, showing high COL selectivity and faradaic efficiency. The cathodic reduction potential of CAL over Pd 4·3 /SnO 2 occurs at −0.92 V. The SnO 2 support is beneficial to promote the C O adsorption of CAL and lower the HER activity of Pd nanocatalysts, thereby contributing to superior activity of Pd 4·3 /SnO 2 for selective hydrogenation of CAL.
研究领域:
化学工程
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催化科学
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产品关联
DOI
高影响因子
RSC Advances
·
2018
·Vol. 8
·期 31
·17595-17605
·
IF 2.936
Jing He,Guanghong Zhou,Yun Bai,Chao Wang,Shuran Zhu,Xinglian Xu,Chunbao Li
We investigated the effects of different pork preparation methods (cooked pork, emulsion-type sausage, dry cured pork, and stewed pork) on protein structures and in vitro digestion. Compared with raw meat, processed meats contained lower levels of free sulfhydryl groups (P < 0.05). Sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) showed different protein profiles for pork products treated without or with 5% βME, which indicated different extents of disulfide bond formation. Emulsion-type sausage showed significantly higher α-helix content and lower β-sheet, β-turn, and random coil contents than cooked pork (P < 0.05). Correspondingly, emulsion-type sausage and dry-cured pork had the highest values of surface hydrophobicity (P < 0.05). Proteome data showed that the long salting and drying times used for dry-cured pork as well as long-term high-temperature cooking of stewed pork might alter the accessibility of digestive proteolytic enzymes to the protein cleavage sites.
研究领域:
食品科学
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蛋白质化学
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营养学
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产品关联
DOI
PubMed
高影响因子
Food Bioscience
·
2024
·
IF 4.8
Lijuan Chen,Jingtao Pang,Yilin Li,Na Gan,Qingling Wang,Di Wu
Cinnamic acid (CA) and cinnamaldehyde (CMA) are essential components of the spice cinnamon, a commonly used food oxidizer and preservative. In this work, the binding mechanism and structural information of CA/CMA to bovine haemoglobin (BHb) were investigated through multi-spectroscopic and molecular simulation experiments focusing on assessing the effect of phytochemicals in spices on BHb. Fluorescence and isothermal titration calorimetry experiments showed that CA possessed a binding constant of 10 5 L/mol and an electrostatic interaction with BHb resulting in the formation of stable complexes compared to CMA-BHb. Spectroscopic results (UV–Vis, CD and synchrotron fluorescence experiments) demonstrated that the addition of CA/CMA differently altered or affected the polarity of the BHb microenvironment, slightly perturbing the secondary structure of BHb. Thermodynamic analyses and molecular docking data were analyzed to confirm the dominance of van der Waals and hydrogen bonding forces in the energy contribution of the CMA-BHb system, and molecular dynamics simulations demonstrated that CA/CMA was relatively stable in the hydrophobic pocket of the protein (BHb). These findings will provide a basis for applying phytochemicals in spices in meat processing.
研究领域:
生物化学
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食品科学
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分子生物学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Rongrong Li,Wubing Yao,Yanxian Jin,Wenping Jia,Xiaoying Chen,Jingjing Chen,Jianli Zheng,Yuan Hu,Deman Han,Jia Zhao
Hydrocinnamaldehyde (HCAL) is a crucial intermediate in the manufacture of perfumes and pharmaceuticals, but highly selective hydrogenation of cinnamaldehyde (CALD) to hydrocinnamaldehyde with a good conversion rate is a challenging. We report that the incorporation of Ag into Pd-based catalysts promotes their catalytic activity and HCAL selectivity (HCAL selectivity of 98.6% with >99.9% CALD conversion for Pd-0.3Ag/MCM-41) for CALD hydrogenation compared to those of catalysts with no Ag, e.g., HCAL selectivity of 84.5% for Pd/MCM-41and 77.3% for Pd/AC (activated carbon). The Pd-0.3Ag/MCM-41 catalyst shows an outstanding stability during five cycles of use. The excellent performance of the Pd-0.3Ag/MCM-41 catalyst in CALD hydrogenation is due to the ultra-small size of the Pd nanoparticles (Pd-Ag alloy, a geometric and electronic modification of Pd).
研究领域:
化学工程
·
催化科学
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产品关联
DOI
高影响因子
CHIRALITY
·
2018
·Vol. 30
·期 11
·1173-1181
·
IF 1.833
Jidong Yang,Xuanping Tan,Yanmei Zhao
A novel and simple method for simultaneous determination of chiral carnitine (CA) enantiomers was proposed. In this work, the rhodamine B (RhB) could react with D-CA and L-CA, and new resonance Rayleigh scattering (RRS) peaks were generated. According to the polarization experiments, it could be testified that scattering peak of this system was composed of resonance fluorescence and scattering light. The RRS intensity of the RhB could be enhanced with the addition of D- or L-CA. However, The RRS signal with L-CA had greater degree increased. So a useful assay program for the selective and simultaneous determination of CA enantiomers was built via the RRS signal differences of the two CA enantiomers responding to RhB. The results showing a good linear relationship and high correlation coefficient were obtained, and the detection limit was calculated as 0.086 μg·mL −1 (D-CA) and 0.042 μg·mL −1 (CA). Here, new built RRS method with RhB as chiral probe could be applied to achieve selective analysis through this work. The applicability of the chiral recognition of CA enantiomers mixtures in samples had been demonstrated by its low cost, sensitivity, enantioselectivity, simplicity, and good availability of the materials.
研究领域:
分析化学
·
生物化学
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产品关联
DOI
PubMed
高影响因子
Agriculture-Basel
·
2022
·Vol. 12
·期 7
·988
·
IF 3.408
Yaojun Liu,Wenqiang Shen,Tao Liu,Rainer Mosenthin,Yinghui Bao,Peng Chen,Wenbo Hao,Lihong Zhao,Jianyun Zhang,Cheng Ji,Qiugang Ma
(1) Background: L-carnosine (β-alanyl-L-histidine), a natural dipeptide, exists at relatively high concentrations in skeletal muscles, and has been shown to protect cells from adverse conditions due to its antioxidant, anti-aging, anti-glycation, and buffering properties. Satellite cells (SCs), residing on the myofiber surface, are crucial for muscle post-growth and regeneration. However, the effects of L-carnosine on muscle development of pigs in vivo, on proliferation and growth of SCs in vitro, and the relationship between SCs and muscle development have not yet been investigated. (2) Methods: The objective of this study was to assess the effect of dietary L-carnosine on growth performance andlongissimus dorsimuscle development of pigs in vivo, and to elaborate its molecular mechanisms in vitro using L-carnosine-treated SCs. (3) Results: It was shown that L-carnosine supplementation (0.2 and 2 mM) increased (p< 0.05) SC proliferation and cell percentage in the synthesis (S) phase and decreased cell percentage in the resting (G0)/first gap (G1)/phase. Moreover, average daily gain (ADG) of pigs fed diets containing 0.1% of L-carnosine was higher (p< 0.05) than that of pigs fed diets without L-carnosine, and thelongissimus dorsimuscle weight of pigs assigned to the L-carnosine treatments was 7.95% higher compared to control pigs. Both in thelongissimus dorsimuscle and cultured SCs of pigs, the Akt/mTOR/S6K signaling pathway was activated (p< 0.05), suggesting that L-carnosine improved muscle growth and SC proliferation of pigs. (4) Conclusions: Considering the important role of SCs in post-natal muscle growth, there is evidence that L-carnosine may improve muscle growth of pigs through promoting SC proliferation via activating the Akt/mTOR/S6K signaling pathway.Keywords:L-carnosine;satellite cells;proliferation;mTOR signaling pathway;muscle growth
研究领域:
动物科学
·
分子生物学
·
营养学
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产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
Yan Wu,Yue Zhou,Hongchen Long,Xiangyu Chen,Yuanyuan Jiang,Lei Zhang,Tao Le
The study investigates a bimetallic organic framework (Zn/Eu-MOF) based fluorescent probe for visual detection of ofloxacin (OFL) in pork, beef and fish. The developed sensing probe recognizes OFL through internal filtration and cation-π interaction between OFL and Zn/Eu-MOF, resulting in a distinct color change from orange-red to light green. The content of OFL can be determined through RGB analysis by a mobile-phone. The developed sensing probe offers several advantages such as broad linear range (0.1 ∼ 80 μM), rapid response time (30 s), low detection line (0.44 μM). The effectiveness of the sensing probe can last for five rounds with good recovery. Moreover, the application of the sensing probe on pork, beef and fish samples are reliable, with recoveries ranging from 93.4 to 112.1%, and the relative standard deviations (RSD) within 1.17% to 2.06%. These results suggest that the developed sensing probe could have significant potential for practical on-site test in food.
研究领域:
食品科学
·
分析化学
·
生物传感
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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）