FOOD CHEMISTRY
·
2023
·
IF 8.8
Hua Xu,Yandan Wang,Yiren Zhang,Qiaoming Lou,Xiupeng Guan,Jun Jin,Qingzhe Jin,Xingguo Wang
Cephalotaxus fortunei , a potential underutilized oil resource, contains various active ingredients that exert positive effects on human health. In the present study, characteristics of C. fortunei kernel oil and its digestion properties were systematically investigated. Results indicated that C. fortunei kernels contained high oil content (64.59%), of which over 90% was triacylglycerols (TAGs). The kernel oil was rich in oleic acid (C18:1n-9, 42.88%), linoleic acid (C18:2n-6, 31.05%), and sciadonic acid (C20:3n-6, 10.78%). The kernel oil also contained some beneficial fat-soluble nutrients, such as tocopherols (143 mg/kg) and phytosterols (1474 mg/kg). Thirty-five kinds of TAGs were identified, among which O-O-L (17.96%), O-O-O (12.12%), L-L-O (11.79%), O-L-Et (8.59%), and O-O-Et (8.76%) were the most abundant. In vitro digestion experiments showed that after 120 min of small intestine digestion, the maximum FFAs release level of the kernel oil was 75.02%, which was lower than that of soybean oil (89.63%).
研究领域:
植物学
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食品科学
·
营养学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Omega
·
2021
·
IF 3.512
Chenghong Hu,Jia Ai,Lin Ma,Ping Wen,Mingjin Fan,Feng Zhou,Weimin Liu
The work reports on the physicochemical and tribological properties of gallate ester oils prepared from fully renewable resources, such as gallic acid and fatty acids. The ester structures were identified by proton nuclear magnetic resonance spectroscopy (1H NMR), carbon nuclear magnetic resonance spectroscopy (13C NMR) and high-resolution mass spectra (HRMS) data. The density at 20 °C (d20), kinematic viscosity (KV), viscosity index (VI), pour point (PP), flash point (FP), thermal and oxidative stabilities, friction-reducing and antiwear properties of gallate ester oils were evaluated. The tribological properties of gallate ester oils as lubricants for steel, copper, and aluminum tribo-pairs can be compared with those of the commercially available lubricating oil tris(2-ethylhexyl) trimellitate (Phe–3Ci8), but their viscosity-temperature characteristics, thermal and oxidative stabilities are better than those of Phe–3Ci8. More importantly, they have much higher biodegradabilities than Phe–3Ci8. The study of the lubrication mechanism shows that the physical and/or chemical adsorption film formed by gallate ester molecules between friction pairs is the key factor for them to obtain friction-reducing and antiwear properties.
研究领域:
化学工程
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材料科学
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环境科学
✓ 已验证
DOI
PubMed
高影响因子
Food Packaging and Shelf Life
·
2022
·
IF 8.749
Ren-jie Luo,Qin-bao Lin,Lei Zhu,Jian-wei Yan,Zhong Li
The extraction experiment of PAAs is carried out by using different solvents to seek out the best extraction one among methylene chloride , n-hexane, ethyl acetate and methanol. Migration test of PAAs from different polymer flexible packaging composite materials under both conditions of 40 ℃/10d and 70 ℃/2 h in neutral and oil simulants are conducted. An effective HPLC method in ESI+ mode is proposed to separate and screen 25 kinds of PAAs listed in SN/T 2893–2011. The extraction test clearly confirms the existence of PAAs in both polyurethane ink and UV-ink which are supposed to be yielded from dye intermediate and azo auxiliary . The comparison study of migration under 70 ℃/2 h for the corona and non-corona surfaces of the above-mentioned two kinds of films reveals that corona treatment improves the printing capacity and thus motivates the migration of PAAs, but has no effect on the final migration quantity.
研究领域:
食品安全
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL LUBRICATION AND TRIBOLOGY
·
2025
·
IF 1.8
Lin Ma,Chenghong Hu,Zhenlin Lv,Xi He,Rui Dong,Mingjin Fan
Purpose This study aims to develop synthetic ester lubricating oil using renewable sinapic acid as raw material, to explore the structural design and selection of raw materials for green, high-performance synthetic ester oils. Design/methodology/approach A series of the sinapate ester oils were synthesized through esterification and alkoxylation reactions using renewable source sinapic acid as the raw material. The molecular structures of the oils were characterized by nuclear magnetic resonance spectroscopy, Fourier transform infrared spectroscopy spectroscopy and elemental analysis. The oils were evaluated for safety, viscosity-temperature properties, thermal and oxidative stability, as well as friction reducing and anti-wear characteristics. Findings Compared to commercial base oil tris (2-ethylhexyl) trimellitate (Phe-3Ci8), the bio-lubricant exhibits superior antifriction and anti-wear properties. Notably, the JCi8-C12 sample performed exceptionally well, reducing the friction coefficient by 11.42% and wear volume (WV) by 54.44% in steel/steel tribo-pairs. In steel/aluminum tribo-pairs, the friction coefficient decreased by 27.48%, while WV was reduced by 85.81%. Mechanistic studies reveal that the introduction of short-chain methoxy groups and stable conjugated systems (aromatic rings and double bonds) inhibit oxidation and decomposition at elevated temperatures. The p-p stacking effect enables lubricant molecules to arrange stably on friction surfaces, forming a durable lubricating film. Originality/value The utilization of biomass resources to develop green synthetic lubricating oil with excellent performance not only enhances the added value of waste from agricultural processing but also offers significant benefits in terms of both economic and environmental sustainability.
研究领域:
材料科学
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化学工程
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可再生资源利用
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2021
·
IF 7.514
Shujie Wang,Kefei Chen,Guoqin Liu
The present study investigated the influence of self-assembled structures on stability and in vitro bioaccessibility of astaxanthin by modifying the structures with different processing conditions. The self-assembled structures of GMS oleogels were changed to produce smaller crystals and more compact network at higher glycerol monostearate (GMS) concentration and lower cooling temperature, resulting in higher hardness, oil binding capacity, and viscoelastic properties of oleogels. In the stability test, the highest retention ratio of astaxanthin was observed in oleogels formed at 4 °C and 10% GMS, indicating that the denser network structures were more effective to prevent the degradation of astaxanthin. During in vitro digestion, the self-assembled structures of oleogels and the nature of GMS molecules affected the lipolysis and micellization, which in turn regulated the bioaccessibility of astaxanthin. Collectively, GMS oleogels were effective delivery materials for improving the stability and bioaccessibility of lipophilic bioactives.
研究领域:
食品科学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Lubrication Science
·
2022
·Vol. 34
·期 5
·347-355
·
IF 1.307
Yongliang Jin,Jian Li,Weimin Lee,Bingxue Cheng,Dan Jia,Jiesong Tu,Shengpeng Zhan,Tian Yang,Haitao Duan
This study aims to investigate a novel high-efficient antioxidant for synthetic ester oils. An ester-bridged antioxidant, phloroglucinol tris (3-[3,5-di-tert-butyl-4-hydroxyphenyl]) propionate (PTP), was successfully synthesised in high yield under relatively mild reaction conditions. Thermal stability and oxidation resistance of diisooctyl adipate (DOA) ester oil were determined and compared to the typical commercial phenol antioxidants, including its tribological properties. The results indicate that the prepared PTP antioxidant exhibits considerably higher thermal stability than commercial antioxidants, and it also improves the oxidation resistance of the synthetic ester oil more effectively. Moreover, the addition of PTP antioxidant enhanced the wear protection of DOA ester oil without deteriorating its lubricating performance. The ester-bridged antioxidant can be used as a multifunctional additive, which not only exerts excellent thermal stability and oxidation resistance, but can also act as an efficient anti-wear agent in synthetic ester oils.
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
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
·
生物学
✓ 已验证
产品关联
DOI
高影响因子
WEAR
·
2025
·
IF 6.1
Zhengquan Jiang,Jiahao Wu,Chuanwei Qiao,Laigui Yu,Jinglei Bi,Yadong Wang,Zhongzheng Yang,Shengmao Zhang,Yujuan Zhang,Weihua Li
Synthetic ester oils are crucial for high-precision equipment lubrication. Strongly polar ester oils competitively adsorb with conventional additives, hindering their effectiveness. This paper proposes the use of FeCoNi nanoparticles as the additive for diisooctyl sebacate (DIOS), a polar synthetic ester oil, attempting to overcome the issue of competitive adsorption faced by traditional additives in polar base oils. Specifically, oleylamine-modified FeCoNi (OA-FeCoNi) nanoparticles were prepared as the additive for DIOS base oil by in situ surface modification technique combined with polyol method, a one-pot liquid-phase chemical method. Friction and wear tests as well as adsorption experiments confirmed the strong adsorption capability of OA-FeCoNi nanoparticles on steel surfaces, demonstrating their effectiveness in enhancing lubrication performance. The present approach, hopefully, would shed light on the facile and well available design and fabrication of efficient anti-wear and friction-reducing agents for polar synthetic ester oils.
研究领域:
材料科学
·
机械工程
✓ 已验证
产品关联
DOI
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
·
2021
·
IF 4.952
Huan Tan,Liyang Han,Chen Yang
The type of oil used and the introduction of bioactive compounds could strongly influence the microstructure and physicochemical properties of Pickering emulsions, which have yet to be fully understood. Herein, oil-in-water (O/W) Pickering emulsions were stabilized by autofluorescent gelatin nanoparticles with either corn oil or medium chain triglyceride (MCT) oil as references for commonly studied edible oils . The microstructure of the emulsions with changes in nanoparticle concentration, oil fraction (Φ), and oil type was investigated with confocal laser scanning microscopy (CLSM). An increase in nanoparticle concentration resulted in an increased thickness of the adsorption layers and number of droplets. Increasing Φ helped to form compact gel-like emulsions and improve the oxidation stability of the emulsions. The high oil-water interfacial tension and surface-active long-chain fatty acids of corn oil caused sparse packing droplet interfaces. Hence, corn oil emulsions were generally less stable than MCT oil emulsions, which was further demonstrated through studies of water holding capacity (WHC), long-term storage stability, and rheology. Furthermore, the incorporation of β-carotene had negative effects on the formation and stability of the emulsions, especially for corn oil emulsions. The findings in this work may have important implications for exploiting Pickering emulsion formulations in real food products.
研究领域:
食品科学
·
生物化学
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2016
·
IF 2.567
Changqing Miao,Donghai Yu,Lina Huang,Shengmao Zhang,Laigui Yu,Pingyu Zhang
1,3,5-Tris(phenylamino) benzene and a series of its substitution derivatives were synthesized. The structure of the as-synthesized products was confirmed by nuclear magnetic resonance spectroscopy and high resolution mass spectra. Moreover, the antioxidation behavior of 1,3,5-tris(phenylamino) benzene and its substitution derivatives as antioxidants in several ester oils was evaluated by a rotary oxygen bomb test and pressurized differential scanning calorimetry, while theoretical calculations were conducted to examine their antioxidation mechanism. It was found that 1,3,5-tris(phenylamino) benzene exhibits better antioxidation ability at elevated temperature (150 and 210 °C) than commonly used commercial antioxidant diphenylamine. In the meantime, the substitution groups exhibit significant effects on the antioxidation behavior of 1,3,5-tris(phenylamino) benzene and its derivatives. This is because the substituents result in changes in the molecular structure and electronic effect of the as-synthesized products, thereby causing s change in their antioxidation behavior.
研究领域:
有机化学
·
材料科学
·
物理化学
✓ 已验证
产品关联
DOI
高影响因子
POLYMER TESTING
·
2024
·
IF 5
Feipeng Wang,Jian Zhou,Linyang Dan,Yihua Qian,Shi Li,Issouf Fofana,Massimo Pompili,Jian Li
The oil-paper insulation system in eco-friendly fire-retardant transformers depends on hydrophilic natural ester insulating oil. Moisture within the system synergistically interacts with aging, worsening oil-paper insulation degradation and hastening overall system aging. Chemical vapor deposition was used to create parylene surface-modified insulating paper as a strategy to inhibit moisture-induced aging in natural ester oil-paper insulation. The effectiveness of the approach was identified by a comprehensive assessment of the physicochemical and electrical properties of the parylene surface-modified insulating paper. The findings from accelerated thermal aging at 130 °C for 90 days on the natural ester oil-paper insulation system reveal the outstanding lipophilic and hydrophobic properties while maintaining electrical characteristics of the parylene surface-modified insulating paper. After 90 days of aging, the parylene surface-modified insulating paper exhibited a 56.76 % higher degree of polymerization and a 19.36 % significantly lower moisture content than conventional cellulose insulating paper. In the natural ester oil-paper insulation system, the parylene surface-modified insulating paper led to a notable 63 % reduction in insulating oil acid value, a 60.50 % decrease in dielectric loss, and a substantial 20.35 % increase in AC breakdown voltage. Molecular-level investigations revealed the inhibitory mechanism of the parylene film, offering a promising solution to enhance the thermal stability and aging resistance of natural ester oil-paper insulation systems.
研究领域:
材料科学
·
电气工程
✓ 已验证
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2022
·
IF 6.633
Muhammad Fasehullah,Feipeng Wang,Sidra Jamil
Synthetic ester (SE) oil-based nanofluids (NFs) are indispensable for high voltage (HV) applications due to their impressive properties; for instance, high biodegradability, environmental friendliness, high dielectric strength and thermal stability. In this work, the solvothermal route is adopted to synthesise cadmium sulfide (CdS) nanomaterials of three different morphologies. CdS nanoparticles (NPs) possess a zinc blende (cubic) phase; however, CdS nanobelts (NBs) and CdS ultra-thin nanosheets (NSs) exhibit a wurtzite (hexagonal) phase. Thereafter, CdS nano-additives are dispersed in SE oil (MIDEL-7131) to investigate the influence of phase, morphology and bandgap of nano-additives on the AC breakdown characteristics of nanofluids. The resultant NFs exhibit significantly augmented AC breakdown strength because of expedited charge scavenging ability due to high bandgap and the formation of an electrical double layer (EDL). NPs based nanofluid (SE/NPs), NBs based nanofluid (SE/NBs), and NSs based nanofluid (SE/NSs) display their optimum doping concentration of 0.3 g/L, 0.3 g/L, and 0.2 g/L, respectively. Furthermore, the thermal stability of NFs of optimum doping concentration is investigated and compared with SE via TGA/DSC/DTG technique. The findings evince that the initial decomposition temperature is high and heat dissipation is low in NFs compared to SE, which indicates that the nanofluids are thermally stable both in air and nitrogen. Finally, the kinematic viscosity measurements of NFs of optimum doping concentration exhibit slightly lower viscosity than that of SE. Hence, CdS nano-additive is proved to be a magnificent potential aspirant which is highly efficient for insulating oil-based NFs development without any surfactant.
研究领域:
电气工程
·
材料科学
·
纳米技术
·
高压工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）