JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART B-PESTICIDES FOOD CONTAMINANTS AND AGRICULTURAL WASTES
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2022
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IF 2.506
Linlin Wang,Qiang Hu,Yanmin Huang,Qipeng Xiong,Yong Chen,Chunfang Gan,Yuanfei Zhang,Guoqin Cui,Jianguo Cui
The controlled release formulations (CRFs) are considered an effective way to solve damage to the environment caused by traditional pesticide formulations. To change the defects of traditional neonicotinoid formulations that dissolve quickly in soil, three types of thiamethoxam (TM) CRFs microspheres with content of 20% TM were prepared using microcrystalline wax (MK) as the matrix, laurate acid tapioca starch ester (MSK) and stearyl dehydroabietic acid ester (MDK) as the regulators of ingredient release. The release behavior of CRFs microspheres in water and soil showed that the microspheres had superior stability and different TM sustained-release periods, and TM release of the microspheres in soil was faster than that in water. The release rate is TM/MDK > TM/MSK > TM/MK. In water, the release of thiamethoxam technical was finished after 38 hours. However, for TM/MK, the release rate was 94% after 240 hours, and the release time was extended by 6 times. Meanwhile, TM/MDK has a particular pH-responsive release. Research shows that using microcrystalline wax as the matrix, by adding MSK or MDK to adjust the release of ingredients, pesticide CRFs microspheres with different release periods can be prepared to achieve the purpose of controlling the release of pesticides.
研究领域:
农药科学
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环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2021
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IF 10.588
Shuai Wang,Wei Shi,Zhichu Huang,Nihong Zhou,Yanling Xie,Yu Tang,Fuliang Hu,Guangxu Liu,Huoqing Zheng
Biodegradation of plastic polymers by plastic-eating insects such as the greater wax moth ( Galleria mellonella ) might be promising for reducing plastic pollution, but direct in vivo evidence along with the related metabolic pathways and role of gut microbiota require further investigation. In this study, we investigated the in vivo degradation process, underlying potential metabolic pathways, and involvement of the gut microbiota in polystyrene (PS) biodegradation via enforcing injection of G. mellonella larvae (Tianjin, China) with PS microbeads (0.5 mg/larva; M n : 540 and M w : 550) and general-purpose PS powders (2.5 mg/larva; M n : 95,600 and M w : 217,000). The results indicated that the PS microplastics were depolymerized and completely digested independent of gut microbiota in G. mellonella although the metabolism could be enhanced by gut microbiota. Based on comparative metabolomic and liquid chromatography analyses, we proposed two potential metabolic pathways of PS in the intestine of G. mellonella larvae: the styrene oxide–phenylacetaldehyde and 4-methylphenol–4-hydroxybenzaldehyde–4-hydroxybenzoate pathways. These results suggest that the enzymes of G. mellonella are responsible for the efficient biodegradation of PS. Further study is needed to identify these enzymes and investigate the underlying catalytic mechanisms.
研究领域:
环境科学
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微生物学
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生物化学
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产品关联
DOI
PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
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2023
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IF 6.6
Shaochan Duan,Jianying Hu,Jingxian Cui,Xiaonan Wu,Yan Chen,Tao Ma,Hongyu Wang
Elimination of oxygen inhibition is still a challenge in the preparation of copolymers for steel bridge deck coatings industry by redox free radical polymerization (RFRP) technique in air and at room temperature. Herein, solvent-free paraffin wax composite alicyclic polyurethane acrylate (PW/APUA) coatings cured in air and at room temperature were developed by RFRP technique, and the efficacy and mechanism of oxygen inhibition elimination by paraffin wax during curing was investigated. The results of tensile, contact angle (CA) and water absorption (WA) tests showed that compared with pure APUA coating, the PW/APUA coatings exhibited superior mechanical properties and water resistance at room temperature, with tensile strength , elongation at break and CA up to 25.1 MPa, 204.23 % and 112.5°, respectively, and WA down to 0.008 %. Thermogravimetric analysis (TGA) suggested that the thermal initial decomposition of the coating increased from 180 °C to 200 °C after incorporation of paraffin wax. Differential scanning calorimetry (DSC) and dynamic mechanical thermal analysis (DMTA) indicated that two glass transition temperatures of PW/APUA coating with 0.3 % paraffin wax were −88.4 °C and 92.6 °C, respectively. Moreover, microstructural characterization of PW/APUA coatings revealed that paraffin wax eliminated oxygen inhibition by forming a dense barrier layer on the air contact surface of the APUA coating. Furthermore, the paraffin wax molecules co-crystallized with the non-polar groups of acrylates, but did not form new chemical bonds. This study provides a distinct and general strategy for eliminating oxygen inhibition of RFRP technology in air.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Yueyue Yang,Liangyun Xu,Qi Zhang,Yihui Wang,Aiquan Jiao,Zhengyu Jin
In this study, a novel pea protein (PP)-based bigel was developed, featuring a high internal phase emulsion. The impact of gelling agent concentration on the gel properties and freeze-thaw stability of the bigel was investigated. The bigel was comprised of two distinct gel phases: an aqueous-phase gel with a covalent network formed by PP and transglutaminase (TGase), and an oil-phase gel with a crystal network structure of rice bran wax (RBW). Microstructural analysis revealed a bi-continuous network structure in the bigel, with network density increasing as TGase and RBW concentrations rose. Rheological analysis showed that storage modulus (G′), apparent viscosity, and structural recovery of the bigel increased with higher TGase and RBW concentrations. Temperature scanning experiments confirmed that the bigel maintained its elastic solid behavior even at elevated temperatures. Optimal sensory properties and low coefficient of friction were achieved at 0.4 % TGase and 7 % RBW concentrations. Additionally, the bigel exhibited notable freeze-thaw stability at TGase and RBW concentrations exceeding 0.2 % and 5 %, respectively. These findings highlight the excellent gelation properties and stability of the PP-RBW-based bigel, suggesting its potential as a fat substitute in the food industry.
研究领域:
食品科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SCIENTIA HORTICULTURAE
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2018
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IF 1.76
Huiyun Chen,Zhengxuan Sun,Huqing Yang
Indian jujube is perishable and has a relatively short shelf-life at room temperature. The effects of carnauba wax (CW) and CW containing glycerol monolaurate (CW-GML) coating on physico-chemical and qualitative attributes of jujube fruit are investigated during storage at 20 °C for 12 days. Compared to the control, both CW and CW-GML coatings reduce jujube weight loss, respiration rate, and ethylene production, maintain lower activities of polygalacturonase, pectin methylesterase and cellulase and delay the flesh softening. The two coatings also delay the change of skin color and ensure higher content of chlorophyll and ascorbic acid. However, the CW-GML coating most significantly inhibite the decay of jujube fruit and retains better sensory quality. After 12 d of storage at 20 °C, the decay index is only 44.3% of the control fruit, and 65.6% of the CW-coated jujube. These results confirm that CW-GML coating could be an effective means to contribute to the shelf-life extension and quality maintenance of jujube fruit stored at 20 °C.
研究领域:
食品科学
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植物生理学
✓ 已验证
DOI
高影响因子
Sustainable Materials and Technologies
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2025
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IF 9.2
Xueying Yan,Xinyu Lin,Yanhui Huang,Yingjie Hong,Zhi Liu,Zongling Zhang,Liyan Liu,Jun Tian,Feicui Qi,Luyi Huang,Changhua Fang
Bamboo scrimber (BS) as an engineering material has been widely used in outdoor areas, in order to improve the protective properties of bamboo scrimber, this study prepared a new composite coating. Wood wax oil (WO) and Zeolitic Imidazolate Framework-8 (ZIF-8) nanoparticles were prepared separately, and ZIF-8 nanoparticles were modified with low surface energy perfluorooctyltriethoxysilane (POTS). ZIF-8/POTS nanoparticles were constructed on the surface of bamboo scrimber to form ZIF-8/POTS/WO/BS composite coatings via the mediating effect of wood wax oil. The composite coatings were superhydrophobic, with a water contact angle of 161.4°. After aging tests, the contact angle of the composite coatings decreased by only 6.51 %, indicating that they remained superhydrophobic. Compared with uncoated substrates, after anti-mildew and preservative treatment tests, the bamboo scrimber coated with ZIF-8/POTS/WO/BS showed an improvement in its discoloration level from grade 4 to grade 1 and an infection level improvement from grade 3 to grade 0. The composite coatings had a nanoscale surface roughness with a surface energy of 2.94 mJ/m 2 . The coatings also exhibited self-cleaning performance, with a dust removal efficiency of 90.91 %. The air layer created on the surface of the composite coating made it difficult for water and microorganisms to directly contact the surface of the coatings. Furthermore, The Zn 2+ ions and 2-methylimidazole released by ZIF-8 disrupted the ionic balance in the surrounding environment, achieving a dual synergistic antifungal effect, which inhibited microbial growth and reproduction on the surface of the coatings, thus providing greater outdoor protection. This work pioneered the use of MOFs and wood wax oil to construct superhydrophobic, self-cleaning, and weather-resistant composite coatings on bamboo scrimber. This coating may enable bamboo scrimber to be used in outdoor building structures, highway guardrails, and bridge components, especially in harsh and wet outdoor environments.
研究领域:
材料科学
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表面工程
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纳米复合材料
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木材保护
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环境功能材料
✓ 已验证
产品关联
DOI
高影响因子
FOOD HYDROCOLLOIDS
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2026
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IF 13.8
Liu Yang,Zhihong Wang,Qiqi Huang,Yingle Chen,Song Wang,Lei Zeng
This study investigated the design of bigel co-delivery systems employing gelatin hydrogel and oleogels with lacquer wax (LW), beeswax (BW) or mixed wax (MW) as an oleogelator. The typical T 2 relaxation signals in low-field NMR analysis and microscopic observations indicated that the bigels transitioned from O/H to H/O structure as the hydrogel/oleogel ratio decreased from 8:2 to 6:4, and utilizing MW could obtain bicontinuous structure at a hydrogel/oleogel ratio of 7:3 under our experimental conditions. Polarized microscopic images and XRD analysis revealed that BW-based bigels formed larger needle-like lipid crystals with a β′ form, whereas LW induced smaller β crystals and MW promoted the formation of both β and α polymorphs with intermediate size. This led to the greater elastic modulus (3518-463600 Pa) and hardness (237-1347 gf) of BW-based bigels compare to those containing LW (elastic modulus: 2255-256600 Pa; hardness: 172-317 gf). FTIR analysis indicated no chemical interactions between the gelatin hydrogel and different oleogels. All the bigels presented textural attributes and standardized dysphagia test results (level 6: soft & bite-sized) satisfying the requirement of dysphagia-friendly foods. In vitro digestion assays demonstrated that lower hydrogel/oleogel ratio and the use of BW contributed to reduced release rates of EGCG and Cur. However, when the hydrogel/oleogel ratio was fixed at 7:3, the use of MW resulted in the lowest release rates of EGCG (40.87% ± 0.48%) and Cur (15.15% ± 1.78%) due to the bicontinuous microstructure. These findings provide broader ideas for developing functional foods to accommodate the needs of dysphagia patients.
✓ 已验证
产品关联
DOI
高影响因子
Food & Function
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2024
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IF 5.1
Zhaojuan Shi,Jun Wu,Xingting Wang,Tongqiao Nie,Qingmei Zeng,Chuanxun Yuan,Risheng Jin
Probiotics have considerable interest due to their inseparable link to human health. However, probiotic products are seriously challenged during processing, preservation, and intake. Food-grade probiotic delivery systems need to be further explored as an effective way to enhance cell viability. In this study, water-in-oil (W/O) Pickering emulsions were fabricated by adding candelilla wax (CLW) as a network stabilizer based on acylated EGCG derivatives in the crystalline form as a Pickering stabilizer. The effects of acylated EGCG derivatives’ concentration, CLW concentration, and oil phase volume fraction on the droplet size distribution, microstructure, and physical stability of Pickering emulsions were explored. The presence of CLW reduced the particle size and improved the physical stability of acylated EGCG-based emulsions, and the effect was more positive with increasing concentration. The protective effect of emulsions with different oil phase volume fractions on Lactobacillus plantarum during freeze-thaw cycles, storage, and gastrointestinal digestion was evaluated. The outer-phase physical barrier of W/O emulsions co-stabilized with acylated EGCG derivatives and CLW facilitated the sensitivity of probiotics to ice crystal growth, temperature changes, acidic environments, and digestive enzymes. The emulsions formulated with 40% oil phase volume fractions allowed Lactobacillus plantarum to survive up to 7.75 log CFU g−1 in the harsh gastrointestinal environment. The results offer promising strategies for applying W/O emulsion probiotic delivery systems in food processing, storage, and oral administration.
研究领域:
食品科学
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生物技术
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微生物学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
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2022
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IF 9.231
Hongtu Qiu,Kexin Qu,Jong-Bang Eun,Hua Zhang
Thermal oxidation of different multi-element oleogels (DMEOs) was assessed by measuring the peroxide, p-anisidine, and total antioxidant values. Moreover, a rapid discriminant model for determining oleogel oxidation was established using an electronic nose combined with cluster analysis (CA), principal component analysis (PCA), discriminant factor analysis (DFA), and linear discriminant analysis (LDA). The oxidation degree of the oleogels was sensitive to their gelation temperature. The oleogels prepared with ethyl cellulose showed the highest oxidation value compared with those prepared with β-sitosterol and lecithin, or carnauba wax. Loading resveratrol and adding surfactants can effectively reduce the oxidation of DMEOs. During the thermal oxidation, the DMEOs were sensitive to nitrogen oxides and methane species. The accuracy rates of the discriminant analyses by CA, PCA, DFA, and LDA were 95.00%, 97.25%, 96.25%, and 100%, respectively, which were consistent with that of the American Oil Chemists' Society Official Method.
研究领域:
食品科学
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分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Weihua Zou,Wenhui Wang,Xinze Liu,Naike Zou,Zhangheng Wang,Delin Sun
Thermochromic wood-based phase change material (TWPCM) is a temperature-responsive, smart material that actively manages thermal energy in response to ambient temperature fluctuations. The material has become a central focus in research on thermal energy storage and temperature sensing in recent years. A key research direction is the incorporation of delignified veneer impregnated with thermochromic phase change material (TPCM) into a multi-layered structure to enhance the thermal energy storage capacity of TWPCM. This study fabricated two thermochromic laminated veneer cellulose-based alizarin/stearic acid/nano‑silicon dioxide/hexagonal boron nitride composites encapsulated with xanthan gum and wood wax oil films, designated as TWPCM1-XW and TWPCM2-XW. Herein, a TPCM with superior latent heat value (215.9 J/g) was fabricated by compositing alizarin and stearic acid. TWPCM1-XW and TWPCM2-XW can obviously change color within a temperature range of 52–74 °C and revert to primary color at temperatures below 45 °C within 60 min, their latent heat values can reach 133.8 J/g and 163.4 J/g. Therefore, the resulting composites exhibit superior temperature-responsive and thermal-storing capabilities. Moreover, the materials demonstrate outstanding long-term applicability and stability in their capabilities. Additionally, the chemical structures of the synthesized materials were elucidated, and their thermochromic and thermal-storing mechanisms were explained for developing the smart material.
研究领域:
材料科学
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热能工程
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林业工程
✓ 已验证
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）