FOOD HYDROCOLLOIDS
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2023
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IF 10.7
Saisai Feng,Liping Liu,Huanyang Li,Yan Guo,Yanxiong Huo,Xiaojiang Wu,Liangliang Zhang,Jianguo Xu
Chitosan (CS)-based functional films have been widely used in food packaging and preservation. In this work, we incorporated the sesamol and flaxseed soluble dietary fiber into chitosan solution to make blend films and investigated their mechanical and physicochemical properties, their antioxidant and antibacterial activities as well as their application in pork preservation. The physicochemical properties including optical properties, water solubility (WS), swelling degree (SD), water vapor transmission rate, and mechanical properties were measured. Meanwhile, the effects of flaxseed soluble dietary fiber (fSDF) and sesamol (Sol) on the microstructure of the blend film were further explored using scanning electron microscopy (SEM), fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and thermogravimetric analysis. Thereafter, the antioxidant and antibacterial capabilities of CS-based films were evaluated. Moreover, the quality changes, myoglobin, and lipid oxidation during the storage period of fresh pork wrapped with CS-based films were monitored. The results showed that the incorporation of fSDF significantly changed the relatively regular and dense interaction network of CS film itself, which resulted in an improved elongation at break and UV resistance, reduced tensile strength, water resistance, and barrier functions. The addition of sesamol filled up the gaps caused by fSDF and had a smoother and denser structure. Therefore, CS/fSDF/Sol had a better barrier function and water resistance. Besides, sesamol addition significantly increased the antioxidant and antibacterial capabilities. Especially, compared with sesamol-incorporated CS films, sesamol-blended CS/fSDF films exhibited greater antioxidant and antibacterial activities. Finally, when three films (CS, CS/fSDF, CS/fSDF/Sol 1.2 ) were used in the preservation of fresh pork, the CS/fSDF/Sol 1.2 exhibited the best performance with the least changes in the appearance, odor, pH values, lipid and myoglobin oxidation levels, and the bacterial contamination. However, the water loss during storage did not improve significantly in pork even coated with CS/fSDF/Sol 1.2 . In conclusion, we suggest the co-addition of fSDF and sesamol into chitosan films to enhance their functionality in preservation.
研究领域:
食品科学
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生物化学
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产品关联
DOI
高影响因子
POLYMER DEGRADATION AND STABILITY
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2025
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IF 7.4
Weichen Sheng,Min Zhong,Han Zhang,Kan Zhang
Biomass derivatives are a promising class of precursors for developing natural sustainable polymers. However, biobased polymers generally possess flammable characteristic and poor thermal stability, which seriously restrain their further applications. Herein, two biobased diamines (PDFA and CPDFA) were successfully synthesized using furfurylamine and benzaldehyde/cyanobenzaldehyde as starting materials. In addition, two novel bio-bisbenzoxazine monomers, S-cpdfa and S-pdfa, were obtained via the Mannich condensation reaction from paraformaldehyde, sesamol and PDFA/CPDFA. The chemical structures of both biobased bisbenzoxazines have been confirmed by FT-IR, 1 H NMR, 13 C NMR, and 2D HMQC spectroscopies as well as high-resolution mass spectrometry (HR-MS). Moreover, the polymerization behaviors of bisbenzoxazine monomers were investigated by DSC and in situ FT-IR analyses. It is noteworthy that fully polymerized biobased thermosetting resins exhibit high thermal stability with T d10 of 373.8 °C and Y c of 63.2 % for poly(S-pdfa), and T d10 of 395.4 °C and Y c of 65.7 % for poly(S-cpdfa), respectively. Notably, poly(S-cpdfa) exhibited very low flammability and self-extinguishing performance as indicated by HRC of 13.1 J·g⁻¹·K⁻¹ and THR of 2.8 kJ·g⁻¹. This work presents a straightforward and environmentally conscious methodology to access phosphorus- and halogen-free thermosets with intrinsically flame retardancy using natural renewable resources.
研究领域:
材料科学
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化学工程
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可持续发展
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产品关联
DOI
高影响因子
POLYMER DEGRADATION AND STABILITY
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2025
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IF 7.4
Weichen Sheng,Min Zhong,Yi Liu,Junhong Zhang,Tiancheng Zhao,Fuping Xie,Kan Zhang
Conventional benzoxazines are largely limited by the dependence on non-renewable resources, insufficient thermal stability, and poor flame retardance properties. This study presents two high-performance monofuran-diamine-type difunctional bio-benzoxazine monomers (MDOPH-fda and DMOPH-fda), whiche were synthesized by reacting 2,5-bis(aminomethyl)furan and paraformaldehyde with either sesamol or 3,4-dimethoxyphenol. The benzoxazine structure was validated using FT-IR, 1 H NMR, 13 C NMR, HMQC NMR, and HR-MS. The polymerization behavior of the monomers was monitored by DSC and in situ FT-IR. The results demonstrated that the polymerization temperatures of the two benzoxazine monomers were close. The thermal stability and thermomechanical properties of polymers derived from the two benzoxazines were evaluated by TGA and DMA). Due to the monofuran-diamine linking structure that leads to the formation of two oxazine rings, both poly(MDOPH-fda) and poly(DMOPH-fda) exhibit good thermal stability. Their respective Td₁₀ values are 374.8 °C and 330.4 °C, and their char yields at 800 °C are 63.5% and 52.8%, respectively. Due to the benzodioxole structure, poly(MDOPH-fda) exhibit superior thermal stability. Regarding thermomechanical properties, the storage modulus of poly(MDOPH-fda) is 3364.8 MPa, while that of poly(DMOPH-fda) is 3856.1 MPa. Their glass transition temperatures (Tg) are 260 °C and 272 °C, respectively. While these values are close, both are higher than those of commercial benzoxazine resins. Experiments using a Microscale Combustion Calorimeter (MCC) and a vertical combustion test (UL-94) confirmed that the sesamol-based benzoxazine resin, poly(MDOPH-fda), exhibits excellent flame retardance. Its heat release capacity (HRC) is 38.7 J·g -1 ·K -1 , and its total heat release (THR) is as low as 0.7 kJ·g -1 , reaching the UL-94 V0 level in the vertical combustion test. Analyses of the surface morphology and chemical composition of the residues after combustion using Scanning Electron Microscopy (SEM), X-ray Photoelectron Spectroscopy (XPS) and Raman Spectroscopy (LRS) show that poly(MDOPH-fda) is conducive to the formation of a dense graphitized carbon layer at high temperatures. This makies it a strong competitor in the field of high-performance flame-retardant resins.
研究领域:
高分子化学
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材料科学
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阻燃材料
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绿色化学
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热分析
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复合材料
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2026
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IF 8.7
Hesheng Wang,Yaqian Yang,Silong Jia,Jinchang Tong,Ziyu Jing,Yaxuan Cui,Xi Lv,Baoguo Ji,Shaoying Zhang,Youwei Yu
Sesamol-WPI interaction elucidated to construct stable WPI/Sesamol/PC nanoparticles. • WSP@NPs were developed by pH-driven electrostatic self-assembly. • Hydrogen bonding and electrostatic interactions formed between NPs and GC matrix • WSP@NPs improved the physicochemical and release performance of GC films. pH-driven electrostatic self-assembly was used to fabricate sesamol-loaded whey protein isolate/pectin (WPI) nanoparticles, which were incorporated into gelatin/chitosan (GC) films to improve their gas barrier and antioxidant properties for fruit preservation. The highest encapsulation efficiency (77.1%) was obtained at a WPI-to-sesamol ratio of 10:1. SEM, AFM, FTIR, XRD and TGA indicated enhanced intermolecular interactions after nanoparticle incorporation. Consequently, the nanocomposite films exhibited higher tensile strength (14.3 ± 1.86 MPa), improved UV-blocking performance (65.5% for UVA and 96.4% for UVB), as well as enhanced thermal stability and water resistance. The nanoparticle system effectively retarded sesamol release, resulting in elevated antioxidant activity (DPPH: 78.6 ± 2.4%; ABTS: 84.1 ± 1.4%). Application to fresh-cut apples and bananas demonstrated that GC + 10%NPs films significantly delayed quality deterioration by reducing color change, weight loss, enzymatic browning, and firmness loss. Overall, the biodegradable nanocomposite films show strong potential for sustainable active food packaging.
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Tao Chen,Peng Liu,Yu Ge,Xiaoting Lei,Zhenzong Fan,Xiaoyu Zhu,Yangping Wen,Hassan Karimi-Maleh,Xiaoqiang Wang
Sesamol is a momentous marker for evaluating the quality of sesame or sesame products. In this study, a new strategy for fabricating portable smartphone sensor based on violet phosphorene (VP)/two-dimensional transition metal borides (MBene) nanozyme modified with Au − Ag bimetallic nanoparticles (Au − AgNPs) on the surface of the screen-printed electrode, which is synthesized under the guidance of machine learning (ML) with eXtreme Gradient Boosting (XGBoost) algorithms, is described for intelligent sensing of sesamol in farmland and agricultural fields. A fluorine-free hydrothermal-assisted alkane etching strategy is used to prepare the fence-like MoAlB-MBene. Highly environmentally stable VP/MoAlB-MBene nanozyme decorated by Au − Ag bimetallic nanoparticles is obtained by ultrasonic-assisted liquid-phase exfoliation with XGBoost assistance. The ML models including artificial neural network, support vector machine and XGBoost for the synthesis of nanozyme are contrasted and discussed, and the XGBoost algorithm is found as the most accurate model for synthesizing nanozyme due to the highest value of correlation coefficient. The nanozyme-modified screen-printed carbon electrode coupled with the palm-sized smartphone-controlled wireless electrochemical device as a portable wireless intelligent sensing platform for the determination of sesamol in a wider linear range of 0.1 ∼ 1000 μmol/L with a lower limit of detection of 21 nmol/L, which enable the on-site determination of 10 varieties of sesame seeds. This work will provide a new reference for the one-step preparation of bimetallic nanoparticles decorated graphene-like nanozyme guided by ML for cost-effective, simple, fast detection of phytochemicals in agricultural products using a portable smartphone sensor.
研究领域:
食品科学
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材料科学
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人工智能
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分析化学
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产品关联
DOI
高影响因子
Frontiers in Pharmacology
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2022
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IF 5.988
Jie Du,Xiaodong Chen,Yongshun Zhao,Tingting Zhao,Dalong Wang,Zujia Chen,Changyuan Wang,Qiang Meng,Jialin Yao,Huijun Sun,Kexin Liu,Jingjing Wu
CYP46A1 is a brain-specific enzyme responsible for cholesterol homeostasis. Inhibition of CYP46A1 activity serves as a therapeutic target for excitatory neurotoxicity. Sesame is a common medicine and food resource; its component lignans possess various pharmacological activities. In this study, the inhibitory effects of sesame lignans on CYP46A1 activity were investigated. Inhibition kinetics analyses revealed that sesamin and sesamolin produce mixed partial competitive inhibition of CYP46A1, while sesamol produces non-competitive inhibition. Notably, molecular simulations revealed that the sesame lignans have excellent orientations within the active cavity of CYP46A1. Importantly, the sesame lignans had high permeability coefficients and low efflux ratios. Furthermore, sesamin significantly reduced the levels of 24S-hydroxycholesterol in rat plasma and brain tissues, and down-regulated the protein expressions of CYP46A1, NMDAR2A, NMDAR2B, and HMGCR. Collectively, sesame lignans exhibit significant inhibitory effects on CYP46A1 activity, highlighting their potential therapeutic role in treating excitatory neurotoxicity.
研究领域:
药理学
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神经科学
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生物化学
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分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
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2021
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IF 4.556
Liumin Huang,Jun Li,Yanlan Bi,Yanhui Xu,Yanmei Wang,Jian Wang,Dan Peng
A simple and fast normal-phase high performance liquid chromatography method for simultaneous detection of α-tocopherol, β-tocopherol, γ-tocopherol, δ-tocopherol, sesamin, sesamolin, sesamol, and asarinin in sesame oil (SO) was investigated. Conditions were a silica gel column as the separation unit, n -hexane and tetrahydrofuran (93:7, v/v) as the mobile phase, isocratic elution, a flow rate of 0.8 mL/min, column temperature of 30 °C, and florescence detector with excitation and emission wavelengths of 295 and 330 nm. SO samples were directly dissolved in n -hexane for HPLC analysis. Results showed that the method performed wide linear ranges and good linearity (0.27–100.0 μg/mL, R 2 > 0.9996), low limits of detection (0.09–0.16 μg/mL) and quantification (0.27–0.41 μg/mL), good precision and accuracy (biases of <2.83 % and relative standard deviations of <3.77 %), good separation performance [resolution factor (1.66–6.20), separation factor (1.11–3.94), retention factor (1.08–1.42), and height of theoretical plates (0.01–0.04 mm)], and satisfactory recoveries (87.3–109.8 % for SO and 96.5–106.9 % for lard). The method was successfully applied for the simultaneous determination of the eight analytes in eleven SO samples.
研究领域:
食品科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）