INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
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2022
·Vol. 57
·期 4
·2435-2446
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IF 3.612
Man-Tong Zhao,Zhong-Yuan Liu,Guan-Hua Zhao,De-Yang Li,Guang-Hua Xia,Fa-Wen Yin,Da-Yong Zhou
Summary The antioxidant capacity of gallic acid (GA) and its fatty alkyl esters such as butyl gallate, octyl gallate (OG), lauryl gallate and hexadecyl gallate in freeze-dried oyster was investigated. During ambient storage, the significant increase of peroxide value and thiobarbituric acid value together with the decline for docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) contents indicated the occurrence of lipid autoxidation in freeze-dried oysters. Meanwhile, the oxidative degradation of glycerol phosphocholine (GPC), glycerol phosphoethanolamine (GPE) and triacylglycerols (TAG) molecular species carrying DHA or EPA in oyster ranked as: TAG > GPE > GPC. GA and its alkyl esters could effectively be prevented dried oyster lipid from oxidation. Among them, OG stood out as the most effective individual. This work implied that the chain lengths of GA alkyl esters affect their antioxidant ability for dried oysters, which provides the information for selecting eligible antioxidants to enhance the oxidative stability of freeze-dried seafood.
研究领域:
食品科学
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生物化学
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DOI
高影响因子
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
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2024
·
IF 3.2
Xiaoyan Zhao,Cheng Fang
Hybrid surfactants of long carbon chain hydrophobic nonionic emulsifier N-390 and conventional anionic emulsifier CO-436 were utilized in this study to enable successful emulsion polymerization of super-hydrophobic monomer stearyl methacrylate (SMA) together with butyl acrylate (BA), acrylic acid (AA), and 2-hydroxyethyl acrylate (HEA). The influences of SMA on the resulting latex and film properties were thoroughly investigated. Both FTIR and 1 H NMR were used to confirm the successful participation of SMA in the emulsion polymerization. The results indicated that with introduction of SMA, the roughness of the latex film increases, while the light transmission decreases. It was also found that with the addition of SMA, contact angle of the latex PSA film increased from 115.1° to 127.2°, while water absorption decreased from 5.76 to 2.89 wt%. DSC curves demonstrated that SMA has participated more in the homopolymerization reaction than in the copolymerization reaction. TGA results showed that the initial decomposition temperature (T 5% ) of the latex film was increased from 302.8 to 332.7 °C with the increase of SMA dosage from 0 to 20 wt%. Finally, adhesion properties results indicated that loop tack and 180° peel force of the PSA films were decreased from 11.51 to 1.88 N/25 mm and 6.36 to 3.44 N/25 mm, respectively, while shear strength was increased from 732 to 2865 min.
研究领域:
材料科学
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高分子化学
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DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2024
·
IF 5.3
Ying Wang,Rui Dong,Hanwen Wang,Lin Ma,Mingjin Fan
The present work designs a series of cycloalkyl ester oils and reports a comparative study on their physicochemical and tribological properties, phytotoxicity, and biodegradability. From the perspective of molecular structure, the factors affecting their physicochemical, tribological properties, phytotoxicity, and biodegradability were discussed, including steric hindrance, group polarity, and so on. The results demonstrated that cycloalkyl ester oils had better thermal stability and viscosity-temperature property than the reference oils. Additionally, their friction-reducing and anti-wear performances were superior to the reference samples. Unexpectedly, the cycloalkyl ester oils were found to have higher phytotoxicity to the experimental plants (wheat and Pak Choi ) due to the introduction of the cycloalkyl group, which enhanced the lipophilicity of corresponding oils and then strengthened the damaging of the oils to plant cell. On the other hand, some of cycloalkyl ester oils were proved to be more biodegradable than the reference samples. By and large, developing green lubricants by replacing aromatic rings is not entirely successful. Lubricants’ biodegradability can be improved with this replacement, but their phytotoxicity cannot be reduced. Howsoever, the present work provides a specific benchmark for the subsequent development of environment - friendly, high-performance synthetic ester lubricants.
研究领域:
材料科学
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环境科学
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生物学
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DOI
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Yufeng Shi,Yingying Li,Nan Wu,Yudan Wang,Lijia Liu,Yawen Liu,Xuan Yuan,Junqing Li
In weakly alkaline environments (such as the human intestinal tract), the effectiveness of conventional antimicrobials may be limited; therefore, a series of cationic tryptophan fatty alcohol esterifications were designed and synthesized, and these compounds were found to possess excellent broad-spectrum antimicrobial properties and good biosafety. Among the agents, tryptophan dodecyl ester (L-Trp-Z12) exhibited the highest antimicrobial efficacy, achieving minimal inhibitory concentrations of merely 0.30 μg/mL against Staphylococcus aureus and 0.60 μg/mL against Escherichia coli, and it caused 50% hemolysis at a concentration of 167 μg/mL. Moreover, based on these cationic antimicrobial agents, a pH-responsive controlled release microsphere was designed and fabricated using SA and T403 as critical constituents. The composition, morphology, controllable release properties, and in vitro antimicrobial properties of the microspheres were systematically investigated. Microsphere SA/T403-2, which features a distinct surface topology with grooves and folds, achieved an encapsulation efficiency of 91.38% and a drug loading capacity of 4.02%. Additionally, the cumulative release rate in the first 10 h was 62% at pH 7.4 (simulated intestinal fluid), which was twice as high as at pH 1.2 (simulated gastric fluid), indicating the microspheres’ pH-responsive behavior. The SA/T403-L-Trp-Z12 microspheres demonstrated excellent antibacterial effects against S. aureus. Therefore, the SA/T403-L-Trp-Z12 microspheres prepared in this study have promising applications in the field of drug carriers and antimicrobials for targeted drug delivery to the colon, providing valuable insights into the design of pH-responsive microspheres.
研究领域:
药剂学
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生物材料
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微生物学
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DOI
高影响因子
ACS Biomaterials Science & Engineering
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2024
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IF 5.4
Yuting Wang,Shengjie Xiao,Siyi Lv,Xiuzhi Wang,Rong Wei,Yu Ma
Dental resin composites (DRCs) are commonly used to restore teeth affected by dental caries or defects. These materials must possess excellent properties to withstand the complex oral environment. The objective of this study was to prepare and characterize Boron nitride nanosheets (BNN)/ dimethyl amino hexadecyl methacrylate (DMAHDM) composites (BNN/DMA), and to evaluate them as functional fillers to enhance the mechanical and antimicrobial properties of dental resins. The BNN/DMA composites were successfully prepared under the theoretical guidance of molecular dynamics (MD), and then the physicochemical and morphological characterization of the BNN/DMA composites were carried out by using various test methods, such as FT-IR, XRD, UV–vis spectroscopy, SEM, TEM, and AFM. It was doped into the dental flowable resin in a certain proportion, and the results showed that the flexural strength (FS), elastic modulus (EM), compressive strength (CS), and microhardness (MH) of the modified resin composites were increased by 53.29, 47.8, 97.59, and 37.1%, respectively, with the addition of 0.8 wt % of BNN/DMA composite fillers. It has a good inhibition effect on Streptococcus mutans, with an inhibition rate as high as 90.43%. Furthermore, this effect persists even after one month of aging. In conclusion, the modification of flowable resins with low-concentration BNN/DMA composites favorably integrates the mechanical properties and long-term antimicrobial activity of dental resins. At the same time, they have good biocompatibility and do not affect the aesthetics. The BNN/DMA composite modified flowable resin has the potential to become a new type of antimicrobial dental restorative material.
研究领域:
牙科材料学
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纳米材料科学
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生物医学工程
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DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2017
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IF 4.798
Jun-fei Long,Qian Tang,Zhen Lv,Chun-rong Zhu,Xiang-kai Fu,Cheng-bin Gong
This study aims to achieve dual-color properties for pyridinium-salt-based electrochromic materials. A novel series of 4′-(4-alkyl ester)-4,2′:6′,4″-terpyridinium derivatives were designed and synthesized through the introduction of an ester group onto the benzene ring of 2,4-di(4-pyridyl)-4-benzylpyridinium derivatives. Dual-electrochromic devices based on these compounds were fabricated. Multiple shades of green and yellowish green colors were obtained by changing the type of carboxylic acids and the nitrogen substituents. The type of carboxylic acids and the nitrogen substituents significantly influenced their electrochromic properties. 4′-(4-Alkyl ester)-4,2′:6′,4″-terpyridinium derivatives show good electrochromic properties such as high coloration efficiency, reasonable contrast, satisfactory optical memories, and redox stability. The dual-electrochromic materials are promising candidates for applications in electrochromic display systems.
研究领域:
材料科学
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化学
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产品关联
DOI
高影响因子
Food Bioscience
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2025
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IF 5.9
Zhe Zhao,Guijie Chen,Danyang Li,Qi Zhang,Guoyuan Xiong,Chuanlai Du,Xiaoxiong Zeng,Chunxu Chen
The 3,5-dicaffeoylquinic acid (3,5-DiCQA), a key component of Chuzhou chrysanthemum, one of the “Four Major Edible Chrysanthemums” in China, has been shown to enrich beneficial gut bacteria and reduce lipid synthesis based on its hydroxycinnamic acid structures. However, its low lipophilicity limits bioactivity, necessitating the development of more stable derivatives. Therefore, this study synthesized and characterized a novel esterified derivative 3,5-DiCQA dodecyl ester (3,5-DiCQAD) with markedly enhanced lipophilicity and bioactivity. In high-fat diet (HFD)-induced male C57BL/6J mice, 3,5-DiCQAD showed remarkable metabolic regulatory effects, including improvements in glucose metabolism, lipid homeostasis, BA signaling, and thermogenesis. Furthermore, 3,5-DiCQAD effectively reshaped the gut microbiota, enriching beneficial bacteria such as Lactobacillus plantarum . Moreover, the strain L. plantarum ZZ 240321 was isolated, and its fermentation of 3,5-DiCQAD generated metabolites that modulated bile acid (BA) metabolism through the FXR/SHP/LRH-1 pathway, alleviating obesity-related symptoms in antibiotic-treated mice. This research provides a novel perspective for developing plant-derived polyphenols as anti-obesity treatments. It also broadens the understanding of DiCQA's probiotic potential in the gut microbiome, highlighting its promising role in managing metabolism-associated disorders.
研究领域:
营养学
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微生物学
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代谢生物学
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药理学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
·
2020
·Vol. 56
·期 6
·2938-2945
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IF 2.773
Ao Li,Man-Tong Zhao,Fa-Wen Yin,Min Zhang,Hui-Lin Liu,Da-Yong Zhou,Fereidoon Shahidi
Summary The antioxidant effects of gallic acid (GA) and its alkyl esters including methyl gallate, ethyl gallate, propyl gallate, butyl gallate (GA-C4), octyl gallate, lauryl gallate, hexadecyl gallate and octadecyl gallate in frying oil (soybean oil) and oyster during frying were investigated. Rancimat induction period (RIP) assay indicated GA and its alkyl esters effectively improved the oxidative stability of soybean oil according to the ‘polar paradox’; that is, the antioxidant effects of the polyphenols decreased in lipid system with the increasing of hydrophobicity. Results also indicated that GA and its alkyl esters all effectively retarded lipid oxidation in oyster tissue according to parameters including RIP, peroxide value and electron spin resonance assays. Moreover, the antioxidant efficiency in oyster increased with the alkyl chain length until GA-C4, and thereafter, the antioxidant effects decreased, similar to the ‘cut-off effect’. This study provides basic data for improving the oxidative stability of seafood during frying.
研究领域:
食品科学
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化学
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营养学
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DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 111
·91140-91146
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IF 3.84
Shuang-Shuang Zhang,Shao-Kui Cao,Su Wang,Qiao-Ling Zhao,Jian-Zhuang Chen,Kun Cui,Zhi Ma
Well-defined α-fluorinated alkyl ester, ω-carboxyl telechelic polystyrenes (PS) were synthesized via combining aminolysis of RAFT-polystyrene and thiol–ene “click” reaction simultaneously. The perfluoroalkyl end groups were –CF3, –(CF2)2–CF3 and –(CF2)7–CF3, respectively. Highly ordered porous films of such telechelic PS with an average pore size about 1.00 μm were fabricated via a static breath-figure process. With the content of fluorine on the surface of porous films increasing from 1.04 wt%, to 1.64 wt% and 2.97 wt%, respectively, the water contact angle (WCA) of such porous films increased from 112° to 116° and 121° ± 0.4°, respectively, indicating their hydrophobicity. Interestingly, microspheres with average diameters of ca. 0.30–0.65 μm can be fabricated via a static BF process using methanol instead of water as the vapor atmosphere in the glass vessel.
研究领域:
高分子化学
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材料科学
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纳米技术
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表面工程
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软物质物理
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DOI
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
·
2020
·
IF 4.006
Man-Tong Zhao,Zhong-Yuan Liu,Ao Li,Guan-Hua Zhao,Hong-Kai Xie,Da-Yong Zhou,Tong Wang
The antioxidant efficiency of gallic acid (GA) and its alkyl esters including methyl gallate (MG), ethyl gallate (EG), propyl gallate (PG), butyl gallate (BG), octyl gallate (OG), lauryl gallate (LG), hexadecyl gallate (HG), and octadecyl gallate (SG) in oyster tissue during hot-air drying process was investigated. Results indicated that GA and its alkyl esters all could effectively retard lipid oxidation in oyster tissue according to peroxide value (POV), thiobarbituric acid reactive substances (TBARS) and free radical intensity. The antioxidant effects increased with the alkyl chain length until OG, thereafter, it gradually decreased. The POV of the OG treated oysters post 10 h of drying was 66.26, 68.90, 77.86, 92.61, 89.45, 70.79, 68.96 and 62.70%, respectively, of those treated by GA, MG, EG, PG, BG, LG, HG and SG. The corresponding values for TBARS were 68.72, 76.59, 77.88, 84.32, 86.23, 68.31, 81.24, 77.36%, while 41.19, 58.62, 62.83, 64.49, 69.60, 61.44, 60.05 and 72.61% for free radical intensity. Pearson correlation analysis showed a positive correlation between the antioxidant effects and the concentrations of the polyphenol compounds in oyster tissue. This report will provide the basic data for selection of suitable antioxidants to improve the oxidation stability of seafood during thermal processing.
研究领域:
食品科学
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化学
·
农业科学
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DOI
高影响因子
INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
·
2022
·Vol. 57
·期 3
·1718-1728
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IF 3.612
Ying Luo,Ao Li,Miao Shen,Man-Man Yu,Zi-Xuan Wu,Xiao-Yang Liu,Fa-Wen Yin,Da-Yong Zhou
Summary The process of lipid oxidation in fresh and fried oysters during in vitro digestion and the relationship between the antioxidant ability of phenolic esters with different chain lengths were investigated through co-digestion of fresh and fried oysters with gallic acid (GA) and its alkyl esters. Lipid oxidation in fresh and fried oysters during simulated digestion in vitro was observed according to increased conjugated diene value, conjugated triene value, thiobarbituric acid reactive substances and fluorescence intensity of aldehydes. Lipid oxidation in oysters was inhibited by GA and its alkyl esters during in vitro digestion effectively. As the alkyl chain length increased, the antioxidant effect first increased and then decreased, and butyl gallate achieved the highest effect among the GA and its alkyl esters we studied, which suggests that the antioxidant efficiency of GA and its alkyl esters in the digestive system may follow the ‘cut-off’ effect.
研究领域:
食品科学
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营养学
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生物化学
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胃肠生理学
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产品关联
DOI
高影响因子
FOOD RESEARCH INTERNATIONAL
·
2021
·
IF 6.475
Yan Shen,Chao Guo,Ting Lu,Xu-Yang Ding,Man-Tong Zhao,Min Zhang,Hui-Lin Liu,Liang Song,Da-Yong Zhou
The most effective composite antioxidants for DHA algae oil were optimized by combining the selected gallic acid (GA) alkyl ester with other commonly used antioxidants. Results of Rancimat induction time, peroxide value, thiobarbituric acid-reactive substances, and free radical generation indicated that octyl gallate (OG) was the best one in DHA algae oil among GA alkyl esters with various chain lengths. Therefore, OG was used to combine other antioxidants (antioxidant of bamboo leaves, rosemary extract, tea polyphenols, tea polyphenol palmitate (TPP), ascorbyl palmitate, vitamin E, phytic acid and phospholipid) for further improving the oxidative stability of DHA algae oil. The combination of OG + TPP showed the best antioxidant effect among the composite antioxidants of two and three components. Through optimization of mixture ratio, the combination of 53.20 mg/kg OG + 360 mg/kg TPP demonstrated the best antioxidant capacity, which prolonged the shelf life of DHA algae oil by 4.24 folds.
研究领域:
食品科学
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化学
·
营养学
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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）