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学者姓名：傅红
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Abstract ：
食品中的有机酸等内源性物质会干扰其中痕量残留物的检测，为消除此影响，以N-β-(氨乙基)-γ-氨丙基三甲氧基硅烷(KH792)为氨基化试剂，直接修饰酸化后的Fe_3O_4得到磁性吸附材料。经响应面试验优化得到KH792对酸化Fe_3O_4的最佳修饰条件为温度82.5℃、pH=4.9,KH792添加量1.8 mL，在最佳条件下，KH792直接修饰的酸化Fe_3O_4对没食子酸吸附量为22.8 mg/g，比市售Fe_3O_4提高了188%，且具备快速固液分离的能力、良好的稳定性及分散性。通过BET、Zeta电位、FTIR和XPS对直接修饰的产物性能进行了表征，结果表明，KH792与Fe_3O_4表面羟基通过Fe-O-Si键结合，酸化提高了Fe_3O_4表面羟基含量，因此也增强了KH792对Fe_3O_4的修饰效果，本文制备的磁性产物可用于净化复杂样品基质中的有机酸。
Keyword ：
N-β-(氨乙基)-γ-氨丙基三甲氧基硅烷 N-β-(氨乙基)-γ-氨丙基三甲氧基硅烷 修饰机制 修饰机制 直接修饰法 直接修饰法 磁性吸附材料 磁性吸附材料 酸化Fe_3O_4 酸化Fe_3O_4
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| GB/T 7714 | 周书威 , 傅红 , 杨方 . 伯仲胺基团修饰Fe_3O_4磁性材料的制备和性能表征 [J]. | 复合材料学报 , 2024 , 41 (04) : 1977-1986 . |
| MLA | 周书威 等. "伯仲胺基团修饰Fe_3O_4磁性材料的制备和性能表征" . | 复合材料学报 41 . 04 (2024) : 1977-1986 . |
| APA | 周书威 , 傅红 , 杨方 . 伯仲胺基团修饰Fe_3O_4磁性材料的制备和性能表征 . | 复合材料学报 , 2024 , 41 (04) , 1977-1986 . |
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Abstract ：
Endogenous substances, such as organic acids in food, can interfere with the detection of trace residues. To eliminate this effect, the magnetic adsorbent material was obtained by directly modifying acidified Fe3O4 with Nβ-(aminoethyl)-γ-aminopropyltrimethoxysilane (KH792) as an amination reagent. The optimal modification condition of KH792 for acidified Fe3O4 was optimized by response surface methodology, which was 82.5℃, pH=4.9, and KH792 addition of 1.8 mL. Under these optimal conditions, the acidified Fe3O4 directly modified by KH792 has an adsorption capacity of 22.8 mg/g and shows a 188% increase in the adsorption capacity of the gallic acid compared to commercially available Fe3O4. Additionally, the modified Fe3O4 exhibits excellent performances of rapid solid-liquid separation, good stability, and dispersibility. The properties of the directly modified products were characterized by BET, Zeta potential, FTIR, and XPS. The results show that KH792 bonds on Fe3O4 surface hydroxyl group's by Fe− O− Si bonding, and acidification improves the number of hydroxyl groups on Fe3O4 surface, thus improving the KH792 modification for Fe3O4. The magnetic products prepared in this work can be used for the purification of organic acids in complex sample matrices. © 2024 Beijing University of Aeronautics and Astronautics (BUAA). All rights reserved.
Keyword ：
Amines Amines Magnetite Magnetite Organic acids Organic acids Silicon Silicon Silicon compounds Silicon compounds
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| GB/T 7714 | Zhou, Shuwei , Fu, Hong , Yang, Fang . Preparation and performance characterization of primary secondary amine-modified Fe3O4 magnetic materials [J]. | Acta Materiae Compositae Sinica , 2024 , 41 (4) : 1977-1986 . |
| MLA | Zhou, Shuwei 等. "Preparation and performance characterization of primary secondary amine-modified Fe3O4 magnetic materials" . | Acta Materiae Compositae Sinica 41 . 4 (2024) : 1977-1986 . |
| APA | Zhou, Shuwei , Fu, Hong , Yang, Fang . Preparation and performance characterization of primary secondary amine-modified Fe3O4 magnetic materials . | Acta Materiae Compositae Sinica , 2024 , 41 (4) , 1977-1986 . |
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Pigments and organic acids are among the most common impurities in complex sample matrices. Their presence in the samples often interferes with the detection of trace analytes. This study aimed to design and develop magnetic materials (GCB/Fe3O4-PSA) for the efficient purification of organic acids and pigment impurities in sample matrices. We employed the acid modification method to enhance the modification of magnetic Fe3O4 by the primary secondary amine adsorption group (PSA), effectively boosting its adsorption performance. This modification technique not only retains the inherent adsorption characteristics of Fe3O4 but also avoids the irreversible damage to Fe3O4′s own adsorption by traditional grafting methods. Subsequently, Fe3O4-PSA and graphitized carbon black (GCB) were combined through a simple physical assembly method to prepare GCB/Fe3O4-PSA, which was used for the purification of pigments and organic acids in complex matrices. During the purification process, GCB/Fe3O4-PSA can be rapidly magnetically separated. After six reuses, the adsorption performance remains above 80 %, fully demonstrating the rapid purification ability and reusability potential of GCB/Fe3O4-PSA. Compared with unmodified Fe3O4, GCB/Fe3O4-PSA significantly enhanced the purification effect of complex matrices. Its adsorption capacities for chlorophyll and ascorbic acid increased by 276.9 % and 263.9 % respectively. After combining with the GCB/Fe3O4-PSA purification material, cathinones in complex matrix samples (tea, apples, carrots) were determined using UPLC-MS/MS. The recoveries in spiked samples ranged from 96.35 % to 104.17 %, with the RSDs < 3.02 %. Simultaneously, characterization methods such as SEM, FTIR, XRD, VSM, XPS, and BET were used to study the surface structure and chemical composition of GCB/Fe3O4-PSA. The above results highlight the outstanding performance of GCB/Fe3O4-PSA in the efficient purification of organic acids and pigments in complex matrices and also show its considerable application potential in the pretreatment of complex matrix samples. © 2024 Elsevier B.V.
Keyword ：
Cleansing Cleansing Complex matrices Complex matrices Graphitized carbon black Graphitized carbon black Magnetic material Magnetic material Primary secondary amine Primary secondary amine
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| GB/T 7714 | Zhou, S. , Wu, Q. , Wang, Q. et al. Assembly of primary secondary amine over magnetic graphitized carbon black material for selective cleansing of sample matrices [J]. | Microchemical Journal , 2024 , 205 . |
| MLA | Zhou, S. et al. "Assembly of primary secondary amine over magnetic graphitized carbon black material for selective cleansing of sample matrices" . | Microchemical Journal 205 (2024) . |
| APA | Zhou, S. , Wu, Q. , Wang, Q. , Fu, H. , Yang, F. . Assembly of primary secondary amine over magnetic graphitized carbon black material for selective cleansing of sample matrices . | Microchemical Journal , 2024 , 205 . |
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食品中的农药残留问题备受关注,然而食品基质复杂、农药种类多且含量甚微,通过样品前处理技术对食品基质进行提取与净化非常必要.在样品前处理过程中,吸附剂材料发挥着重要作用.近年来,磁性碳材料(mCBMs)因净化效果好、分离速度快、易回收等优势,在食品中农药残留分析领域受到广泛关注.该文介绍了磁性石墨烯、磁性碳纳米管、磁性石墨化碳黑的制备及其功能化方法——进行官能团、高分子聚合物和功能材料的修饰,简要概述了mCBMs在食品农残检测中的应用、存在的问题与未来发展的方向,以期为拓展mCBMs在农残检测中的应用提供参考.
Keyword ：
修饰 修饰 农药残留 农药残留 制备 制备 检测分析 检测分析 磁性碳材料 磁性碳材料 食品 食品
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| GB/T 7714 | 周书威 , 傅红 , 杨方 . 磁性碳材料的制备及其在食品农药残留检测中的应用 [J]. | 分析测试学报 , 2023 , 42 (2) : 241-250 . |
| MLA | 周书威 et al. "磁性碳材料的制备及其在食品农药残留检测中的应用" . | 分析测试学报 42 . 2 (2023) : 241-250 . |
| APA | 周书威 , 傅红 , 杨方 . 磁性碳材料的制备及其在食品农药残留检测中的应用 . | 分析测试学报 , 2023 , 42 (2) , 241-250 . |
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研究乙基纤维素（EC）的玻璃化温度（Tg）和熔融温度（Tm）以及冷却方式对其制备凝胶化油脂的力学特性和氧化特性的影响，阐明氢键形成效应与EC凝胶化油脂氧化速率的相关性。结果表明，在EC（黏度40～50 mPa·s）的Tg(135℃)和Tm(187℃)下制备的凝胶化油脂均具有类固体行为。与Tg相比，Tm制备样品的储能模量和硬度等质构特性较高，25℃贮藏30d后的顶空耗氧量为0.71%。偏光显微镜和扫描电镜观察到Tm制备样品中EC能更好地溶解于油相，其油滴孔隙直径为Tg样品的38.56%，凝胶网络结构更加致密。傅里叶红外光谱显示：在Tg和Tm下制备的EC凝胶化油脂的羟基伸缩振动峰分别为3 472.48,3 468.48 cm-1，氢键效应增强。当EC添加量从4%增到10%时，顶空耗氧量随之下降，10%EC添加量的缓慢冷却样品的顶空耗氧量仅为快速冷却的64.67%，其羟基伸缩振动峰从快速冷却的3 499.74 cm-1红移至3 471.78 cm-1，氢键效应增强。上述结果表明，EC凝胶化油脂制备过程中氢键效应的增强导致液晶网络结构更加致密，降低了油脂的氧化速率。
Keyword ：
乙基纤维素 乙基纤维素 凝胶化油脂 凝胶化油脂 氢键 氢键 熔融温度 熔融温度 玻璃化温度 玻璃化温度
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| GB/T 7714 | 戴美娜 , 罗晶 , 林荣发 et al. 成型温度对乙基纤维素凝胶化油脂结构和氧化特性的影响 [J]. | 中国食品学报 , 2023 , 23 (07) : 80-87 . |
| MLA | 戴美娜 et al. "成型温度对乙基纤维素凝胶化油脂结构和氧化特性的影响" . | 中国食品学报 23 . 07 (2023) : 80-87 . |
| APA | 戴美娜 , 罗晶 , 林荣发 , 刘祖文 , 傅红 . 成型温度对乙基纤维素凝胶化油脂结构和氧化特性的影响 . | 中国食品学报 , 2023 , 23 (07) , 80-87 . |
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The issue of pesticide residues in food is of great concern．The extraction and purification of food matrices by sample pretreatment techniques are necessary for the complex matrixes of food products containing many types of pesticides and very small amounts．In the sample pretreatment pro⁃ cess， sorbent materials play an important role． In recent years，magnetic carbon materials （mCBMs） have received much attention in the field of pesticide residue analysis in food due to their good purification effect，rapid separation and easy recovery．In this paper，the preparation of mag⁃ netic graphene，magnetic carbon nanotubes，magnetic graphitized carbon black and their modifica⁃ tion with functional groups， polymer and functional materials are introduced． The application and the problems and future prospects of mCBMs in the detection of pesticide residues in food are out⁃ lined．It is anticipated to provide a reference for expanding the application of mCBMs in the detection of pesticide residues. © 2023, China Association for Instrumental Analysis. All rights reserved.
Keyword ：
detection and analysis detection and analysis food food magnetic carbon materials magnetic carbon materials modified modified pesticide residues pesticide residues preparation preparation
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| GB/T 7714 | Zhou, S.-W. , Fu, H. , Yang, F. . Preparation of Magnetic Carbon Materials and Their Application in the Detection of Pesticide Residues in Food [J]. | Journal of Instrumental Analysis , 2023 , 42 (2) : 241-250 . |
| MLA | Zhou, S.-W. et al. "Preparation of Magnetic Carbon Materials and Their Application in the Detection of Pesticide Residues in Food" . | Journal of Instrumental Analysis 42 . 2 (2023) : 241-250 . |
| APA | Zhou, S.-W. , Fu, H. , Yang, F. . Preparation of Magnetic Carbon Materials and Their Application in the Detection of Pesticide Residues in Food . | Journal of Instrumental Analysis , 2023 , 42 (2) , 241-250 . |
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The glass temperature (Tg) and melting temperature (Tm) of ethyl cellulose (EC) and cooling methods of oleogels which effected on the mechanical properties and oxidation characteristics of the gel were studied. Meanwhile, the relationship between hydrogen bonding and oxidative stability of EC oleogels were described. The results showed that the oleogels prepared at the glass temperature (135°C) and melting temperature (187°C) of EC (EC with viscosity of 40-50 mPa • s) all had solid—like behavior. Compared with (Tg), the storage modulus and texture properties of samples prepared at Tm were higher. After stored at 25 °C for 30 days, the headspace oxygen consumption of the Tm sample was 0.71%. Polarization microscope and scanning electron microscope showed that EC could be better dissolved in the oil phase when oleogels prepared at (Tg), and the gel network structure was more compact. The pore diameter of the oil droplets was 38.56% of the (Tg) Fourier transform infrared spectroscopy showed that the hydroxyl stretching vibration peaks of EC oleogels prepared at (Tg) and Tm shifted from 3 472.48 cm-1 to 3 468.48 cm-1, which implied the hydrogen bond effect was enhanced. With the addition of EC from 4% to 10%, the headspace oxygen consumption decreased with the increase of the addition of EC. Compared with the fast cooling sample of 10%EC, the headspace oxygen consumption of the slow cooling sample was only 64.67% of it, and the hydroxyl stretching vibration peak shifted from 3 499.74 cm-1 to 3 471.78 cm-1 which showed the hydrogen bond effect was enhanced. The results showed that the enhancement of the hydrogen bonding during the preparation of EC oleogels formed a denser liquid crystal network structure and reduced the oxidation rate of the oleogels. © 2023 Chinese Institute of Food Science and Technology. All rights reserved.
Keyword ：
ethyl cellulose ethyl cellulose glass transition temperature glass transition temperature hydrogen bond hydrogen bond melting temperature melting temperature oleogels oleogels
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| GB/T 7714 | Dai, M. , Luo, J. , Lin, R. et al. Effect of Molding Temperature on Structure and Oxidation Characteristics of Ethyl Cellulose Oleogels; [成型温度对乙基纤维素凝胶化油脂结构和氧化特性的影响] [J]. | Journal of Chinese Institute of Food Science and Technology , 2023 , 23 (7) : 80-87 . |
| MLA | Dai, M. et al. "Effect of Molding Temperature on Structure and Oxidation Characteristics of Ethyl Cellulose Oleogels; [成型温度对乙基纤维素凝胶化油脂结构和氧化特性的影响]" . | Journal of Chinese Institute of Food Science and Technology 23 . 7 (2023) : 80-87 . |
| APA | Dai, M. , Luo, J. , Lin, R. , Liu, Z. , Fu, H. . Effect of Molding Temperature on Structure and Oxidation Characteristics of Ethyl Cellulose Oleogels; [成型温度对乙基纤维素凝胶化油脂结构和氧化特性的影响] . | Journal of Chinese Institute of Food Science and Technology , 2023 , 23 (7) , 80-87 . |
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The separation of glyceride fish oil high in omega-3 polyunsaturated fatty acid (ω-3 PUFA) produced by multistage enzymatic transesterification was studied by multistep molecular distillation. Firstly, glycerides and by-products in the transesterification products were separated by primary molecular distillation. When the distillation pressure was 5 Pa, the distillation temperature was 140 ℃, the scraper speed was 240 r/min, and the feeding rate was 0.2 mL/min, the yield of the first-stage heavy phase was 47.13% and the content of ω-3 PUFA in it was 53.76%. Meanwhile, high-temperature gas chromatography (HTGC) and nuclear magnetic resonance hydrogen (1H-NMR) spectroscopy consistently showed that the heavy phase did not contain fish oil ethyl ester. Secondly, the ω-3 PUFA content of the light phase increased from 60.73% to 78.01% by molecular distillation at a distillation pressure of 5 Pa, a distillation temperature of 110 ℃, a scraper speed of 240 r/min, and a condensation temperature of 20 ℃. After conducting secondary enzymatic transesterification reaction and molecular distillation separation on the enriched first-stage light phase, the yield of the second-stage heavy phase was 78.01% and its ω-3 PUFA content was 51.38%. When the enrichment step was omitted, the content of ω-3 PUFA in the second-stage heavy phase was only 42.37%. Multistep molecular distillation combined with multistage enzymatic transesterification can be used to prepare glyceride-type fish oil products with different ω-3 PUFA contents, with maximal utilization of raw materials and by-products. © 2023 Chinese Chamber of Commerce. All rights reserved.
Keyword ：
Distillation Distillation Fish Fish Gas chromatography Gas chromatography Nuclear magnetic resonance Nuclear magnetic resonance Nuclear magnetic resonance spectroscopy Nuclear magnetic resonance spectroscopy Polyunsaturated fatty acids Polyunsaturated fatty acids Transesterification Transesterification
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| GB/T 7714 | Shen, Linjie , Lin, Rongfa , Zhang, Lianyue et al. Multistep Molecular Distillation for the Preparation of Glyceride-Type Fish Oil High in Omega-3 Polyunsaturated Fatty Acid by Enzymatic Transesterification [J]. | Food Science , 2023 , 44 (20) : 79-86 . |
| MLA | Shen, Linjie et al. "Multistep Molecular Distillation for the Preparation of Glyceride-Type Fish Oil High in Omega-3 Polyunsaturated Fatty Acid by Enzymatic Transesterification" . | Food Science 44 . 20 (2023) : 79-86 . |
| APA | Shen, Linjie , Lin, Rongfa , Zhang, Lianyue , Feng, Chuanzhi , Fu, Hong . Multistep Molecular Distillation for the Preparation of Glyceride-Type Fish Oil High in Omega-3 Polyunsaturated Fatty Acid by Enzymatic Transesterification . | Food Science , 2023 , 44 (20) , 79-86 . |
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研究采用分子蒸馏技术分步法处理多级酶促鱼油酯交换反应产物，获得高含量ω-3多不饱和脂肪酸（polyunsaturated fatty acid,PUFA）甘油酯。首先通过一级分子蒸馏分离鱼油酯交换产物中的甘油酯和副产物，当蒸馏压强5 Pa、蒸馏温度140℃、刮板转速240 r/min和进料速率0.2 mL/min时，得率为47.13%的一级重相ω-3 PUFA含量达到53.76%，高温气相色谱及核磁共振氢谱都证明一级重相不含乙酯型鱼油；其次，当蒸馏压强5 Pa、蒸馏温度110℃、刮板转速240 r/min和冷凝温度20℃时，分子蒸馏可以将一级轻相中的ω-3 PUFA含量从60.73%富集到78.01%，此一级轻相富集相参与二级酶促酯交换反应和分子蒸馏分离后，获得得率为46.23%并含有51.38%ω-3 PUFA的二级重相。若一级轻相直接参与二级酯交换反应和分离，其二级重相ω-3 PUFA含量仅为42.37%。采用多级酶促酯交换反应和多步分子蒸馏方法可以制备不同ω-3 PUFA含量等级的甘油酯型鱼油产品，并实现原料和副产物的最大化利用。
Keyword ：
ω-3多不饱和脂肪酸 ω-3多不饱和脂肪酸 分子蒸馏 分子蒸馏 甘油酯 甘油酯 酶促酯交换 酶促酯交换 鱼油 鱼油
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| GB/T 7714 | 沈琳洁 , 林荣发 , 张连岳 et al. 分子蒸馏技术分步法制备酶促酯交换反应的高含量ω-3PUFA鱼油甘油酯 [J]. | 食品科学 , 2023 , 44 (20) : 79-86 . |
| MLA | 沈琳洁 et al. "分子蒸馏技术分步法制备酶促酯交换反应的高含量ω-3PUFA鱼油甘油酯" . | 食品科学 44 . 20 (2023) : 79-86 . |
| APA | 沈琳洁 , 林荣发 , 张连岳 , 冯传志 , 傅红 . 分子蒸馏技术分步法制备酶促酯交换反应的高含量ω-3PUFA鱼油甘油酯 . | 食品科学 , 2023 , 44 (20) , 79-86 . |
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研究植物甾醇凝胶剂(β-谷甾醇与γ-谷维素质量比2∶3)对大豆油凝胶网络结构及氧化特性的影响。结果表明,在植物甾醇凝胶剂添加量为2%～10%(质量分数)时,6%及以上的凝胶化大豆油的G′始终大于G″,说明体系已形成稳定的类固体凝胶结构。偏振光显微镜显示,6%凝胶化大豆油在45℃贮藏10 d时,呈现规则且紧密的聚集态,其过氧化值为15.59mmol/kg,丙二醛含量为1.49 mg/kg,顶空耗氧量为24.19%,氧化稳定性最好。分别添加2%～10%的β-谷甾醇或γ-谷维素,顶空耗氧量显示β-谷甾醇起到抗氧化的作用,γ-谷维素起到促氧化作用。180℃下加热2.5 h,6%植物甾醇凝胶化油脂的顶空...
Keyword ：
凝胶化油脂 凝胶化油脂 凝胶结构 凝胶结构 植物甾醇 植物甾醇 热氧化 热氧化
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| GB/T 7714 | 林荣发 , 钟晓芳 , 戴美娜 et al. 植物甾醇对其凝胶化大豆油结构稳定性和热氧化特性的影响 [J]. | 中国食品学报 , 2022 , 22 (01) : 155-162 . |
| MLA | 林荣发 et al. "植物甾醇对其凝胶化大豆油结构稳定性和热氧化特性的影响" . | 中国食品学报 22 . 01 (2022) : 155-162 . |
| APA | 林荣发 , 钟晓芳 , 戴美娜 , 刘祖文 , 马穆彪 , 江洲 et al. 植物甾醇对其凝胶化大豆油结构稳定性和热氧化特性的影响 . | 中国食品学报 , 2022 , 22 (01) , 155-162 . |
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