Journal of the American Oil Chemists Society最新文献

{"title":"Determination of Crystalline Fraction and Specific Surface Area During Fat Crystallization Using In Situ Synchrotron X-Ray Scattering","authors":"Laura Bayés-García,&nbsp;Lu Zhang,&nbsp;Teresa Calvet,&nbsp;Cristián Huck-Iriart","doi":"10.1002/aocs.70114","DOIUrl":"https://doi.org/10.1002/aocs.70114","url":null,"abstract":"<div>\u0000 \u0000 <p>A methodology based on Small-Angle X-ray Scattering (SAXS) and Wide-Angle X-ray Scattering (WAXS) for analyzing liquid–solid phase transitions in fat systems is presented. Unlike traditional approaches that focus on Bragg peak indexing and polymorphism, this work emphasizes the determination of Crystalline Fraction and the analysis of specific surface area during phase transitions. A comparative study was conducted on two distinct complex lipid systems: cocoa butter and a high melting fraction of olive oil. Through this comparative analysis, we explore the nuances of crystallization and melting behaviors, providing insights into their structural evolution and the role of interfacial surface during these processes. These findings highlight the utility of SAXS/WAXS in understanding the complex dynamics of fat crystallization and melting, offering valuable perspectives for both academic research and industrial applications.</p>\u0000 </div>","PeriodicalId":17182,"journal":{"name":"Journal of the American Oil Chemists Society","volume":"103 9","pages":"1019-1029"},"PeriodicalIF":2.4,"publicationDate":"2026-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148871939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pracaxi Oil as a Potential Inhibitor of Fat Bloom","authors":"Victoria Marques Gropelli,&nbsp;Priscila Dayane De Freitas Santos,&nbsp;Thayná Torres Da Silva,&nbsp;Ana Paula Badan Ribeiro,&nbsp;Rosiane Lopes Cunha","doi":"10.1002/aocs.70106","DOIUrl":"https://doi.org/10.1002/aocs.70106","url":null,"abstract":"<p>Fat bloom is one of the major technological challenges faced by the chocolate industry, caused by the polymorphic transition from β2(V) to β1(VI) crystals in cocoa butter (CB). One strategy to slow down this polymorphic transition is the addition of lipids rich in very long chain fatty acids (VLCFA), such as behenic acid. In this context, Amazonian pracaxi oil (PO), a natural source rich in this fatty acid, has shown potential as an anti-bloom agent. This study aimed to evaluate the effect of PO on delaying the formation of the β1(VI) polymorph in CB. The physicochemical characteristics of raw materials (CB and PO) were initially analyzed. Subsequently, CB and PO blends (up to 30% w/w PO) were prepared and characterized in terms of thermal properties and solid fat content. Two blends (90CB:10PO and 70CB:30PO) were selected for evaluation of crystalline stability for 90 days, under two storage conditions: constant temperature (20°C) and cycling (20°C from days 0 to 7, alternating between 20°C and 32°C from days 7 to 19, and 20°C from days 19 to 90). The results indicated that the addition of PO may have the function of delaying the crystalline transition of the β1(VI) polymorph, especially under constant temperature storage. The 90CB:10PO blend maintained the thermal and structural properties of CB but exhibited a less pronounced anti-bloom effect compared to the 70CB:30PO blend. These results suggest that PO is a promising natural alternative to delay fat bloom in chocolates, contributing to technological, healthy and sustainable innovations in the food industry.</p>","PeriodicalId":17182,"journal":{"name":"Journal of the American Oil Chemists Society","volume":"103 9","pages":"1005-1017"},"PeriodicalIF":2.4,"publicationDate":"2026-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aocs.70106","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148872130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Activated Halloysites as Alternative Adsorbents for Crude Cottonseed Oil Bleaching","authors":"Elif Yucetepe,&nbsp;Emin Yilmaz,&nbsp;Buket Aydeniz-Guneser","doi":"10.1002/aocs.70121","DOIUrl":"https://doi.org/10.1002/aocs.70121","url":null,"abstract":"<div>\u0000 \u0000 <p>This study aimed to modify and characterize natural halloysite using six activation methods and to evaluate their performance in the bleaching of neutralized crude cottonseed oil (NCO), in comparison with a commercial bleaching earth (CBE). Among the modified samples, acid-activated halloysite (HS-AA) exhibited the highest specific surface area (114.01 m²/g), while surface and pore properties varied significantly depending on the activation method. Scanning electron microscopy revealed notable alterations in tubular morphology, whereas X-ray diffraction patterns indicated peak broadening, suggesting partial loss of interlayer water. Fourier-transform infrared spectroscopy showed higher crystallinity and reduced impurity levels in HS-AA and control (HS-CN) samples. The treated oils were evaluated in terms of oil loss, color parameters, bleaching efficiency, peroxide value, UV-specific absorbance, and free fatty acidity. The results demonstrated that thermally activated (HS-TA), acid-activated (HS-AA), and oxalic acid-activated (HS-OA) halloysites exhibited promising adsorption performance. Phytosterol and tocopherol analyses indicated minimal nutrient losses in oils treated with HS-TA and CBE. Overall, HS-TA is proposed as a simple, cost-effective, and efficient adsorbent for oil bleaching. Further optimization of activation conditions is recommended to enhance its performance.</p>\u0000 </div>","PeriodicalId":17182,"journal":{"name":"Journal of the American Oil Chemists Society","volume":"103 9","pages":"1109-1118"},"PeriodicalIF":2.4,"publicationDate":"2026-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148871967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermal Oxidation of Cyclopropene Fatty Acids: Kinetics and Reaction Mechanism Based on Degradation Products","authors":"Lijun Li,&nbsp;Shen Huang,&nbsp;Wei Liu","doi":"10.1002/aocs.70113","DOIUrl":"https://doi.org/10.1002/aocs.70113","url":null,"abstract":"<div>\u0000 \u0000 <p>Cyclopropene fatty acids (CPE-FAs), predominantly consisting of sterculic acid and malvalic acid, are a class of naturally occurring fatty acids featuring a cyclopropene moiety. They have been proven to induce physiological disorders in various animal species. In this study, kapok seed oil—characterized by high CPE-FAs content and ready accessibility—was selected as substrate to systematically investigate the regularities and kinetic characteristics of CPE-FAs thermal oxidative degradation during heat treatment at 150°C–250°C. The results showed that the conversion of CPE-FAs exhibited a strong dependence on temperature. A particularly sharp increase in the degradation rate of malvalic acid was observed at 210°C, where 91.8% degradation was achieved in merely 30 min of heating. Furthermore, headspace solid-phase microextraction coupled with gas chromatography–tandem mass spectrometry (HS–SPME–GC–MS), ultra-high performance liquid chromatography–quadrupole orbitrap mass spectrometry (UHPLC-Q-Orbitrap MS), and nuclear magnetic resonance (NMR) were employed to analyze and identify volatile and nonvolatile substances generated from the heat treatment of methyl cyclopropenoate standards. Based on the inferred product structures, a thermal oxidative degradation pathway for CPE-FAs was proposed: the process initiates with a ring-opening of the cyclopropene moiety, followed by further oxidation to yield distinct secondary oxidative products. This study provides a theoretical basis for understanding the thermal conversion mechanisms and pathways of CPE-FAs in edible oils.</p>\u0000 </div>","PeriodicalId":17182,"journal":{"name":"Journal of the American Oil Chemists Society","volume":"103 9","pages":"1047-1055"},"PeriodicalIF":2.4,"publicationDate":"2026-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148872009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enzymatic Hydrolysis of Monomethyl Azelate to Prepare High-Purity Azelaic Acid: Optimization, Process Evaluation and Kinetic Study","authors":"Xiaojiang Liang,&nbsp;Yuan Zhang,&nbsp;Xuelei Ye,&nbsp;Haotian Fei,&nbsp;Tianshuo Chen,&nbsp;Wenhao Li,&nbsp;Yong Nie","doi":"10.1002/aocs.70118","DOIUrl":"https://doi.org/10.1002/aocs.70118","url":null,"abstract":"<div>\u0000 \u0000 <p>Azelaic acid is a vital oleochemical product widely used in the pharmaceutical, cosmetics, and new energy materials industries. In this work, the enzymatic hydrolysis of monomethyl azelate was proposed to prepare azelaic acid, utilizing immobilized lipase FM-NE04 as catalyst. The effects of stirring rate, enzyme dosage, mass ratio of ester to water, and reaction temperature on the conversion of monomethyl azelate were investigated and optimized. The results indicated a 99.5% conversion of monomethyl azelate under the optimal conditions, which included a stirring rate of 500 r·min⁻¹, an immobilized lipase dosage of 15 wt%, a mass ratio of ester to water of 3:250, and a reaction temperature of 60°C. Moreover, the process was evaluated, including the reusability of FM-NE04 and water, as well as the quality of the azelaic product. The results demonstrated that both FM-NE04 and water could be recycled, maintaining a conversion of monomethyl azelate above 99.5% for up to five cycles under optimal conditions. After recrystallization, the purity of azelaic acid reached 99.9%, meeting the industrial Type I standard. Additionally, a macroscopic kinetic model for the enzyme-catalyzed hydrolysis of monomethyl azelate was established, and the kinetic parameters for the process were estimated. Overall, these findings offer an efficient and environmentally friendly method to produce high-purity azelaic acid.</p>\u0000 </div>","PeriodicalId":17182,"journal":{"name":"Journal of the American Oil Chemists Society","volume":"103 9","pages":"1057-1066"},"PeriodicalIF":2.4,"publicationDate":"2026-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148872142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prilezhaev Reaction of Vegetable Oil for Bio-Based Polyol Production: A Review","authors":"Intan Suhada Azmi,&nbsp;Mohd Zulkipli Ab Kadir,&nbsp;Mohd Jumain Jalil","doi":"10.1002/aocs.70117","DOIUrl":"https://doi.org/10.1002/aocs.70117","url":null,"abstract":"<div>\u0000 \u0000 <p>This review paper examines the Prilezhaev reaction, commonly known as the epoxidation of vegetable oils, which are renewable resources with promising industrial applications. The epoxidation process involves reacting unsaturated fatty acids with peroxy acids to form epoxide groups, serving as essential intermediates for further chemical transformations. Specifically, this paper provides an overview of various epoxidation techniques and the subsequent production of bio-polyols, highlighting current advancements, challenges, and alignment with green chemistry principles. Furthermore, the article evaluates ring-opening reactions of epoxidized vegetable oils using diverse reagents. These reactions yield polyols, which are the key intermediates required for synthesizing polyurethanes and other polymers. Ultimately, transforming vegetable oils into functionalized bio-based products via epoxidation and ring-opening reactions offers broad industrial applications in fields such as bioplastics, lubricants, and coatings.</p>\u0000 </div>","PeriodicalId":17182,"journal":{"name":"Journal of the American Oil Chemists Society","volume":"103 9","pages":"1031-1046"},"PeriodicalIF":2.4,"publicationDate":"2026-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148871938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Degradation Mechanisms, Encapsulation-Based Stabilization, and Analytical Detection of Vitamin A","authors":"Latheesha Abeywardana,&nbsp;Thambaramala V. Gamage,&nbsp;Tanoj K. Singh,&nbsp;Shuaifei Zhao,&nbsp;Amy Logan,&nbsp;Lingxue Kong","doi":"10.1002/aocs.70119","DOIUrl":"https://doi.org/10.1002/aocs.70119","url":null,"abstract":"<p>Vitamin A is an important lipid-soluble micronutrient essential for vision, immune function, and overall growth and development. However, vitamin A is unstable and susceptible to environmental factors because of its conjugated structure and inherent chemical reactivity. This often leads to oxidative deterioration and significant losses in nutritional value during food processing, storage, and cooking. This review integrates degradation kinetics, matrix-dependent stability, and emerging encapsulation strategies, with a specific focus on how processing and cooking conditions influence vitamin A retention and bioavailability in real food systems. This review outlines the structural basis for vitamin A instability, explores its degradation mechanisms, including photo- and thermal-degradation pathways, and the effect of environment, such as pH, moisture, and matrix interactions. How food processing and cooking affect the bioavailability and release kinetics of vitamin A is evaluated, highlighting the impact of long-term storage on vitamin A stability and bioavailability. Moreover, recent stabilization strategies are explored, focusing on delivery systems that may enhance chemical stability, extend shelf life, and control the release and bioavailability of vitamin A upon consumption. The application depends on criteria such as oxygen barrier properties, thermal stability, scalability, and release kinetics, and the examples explored herein include lipid-based nanoparticles, which provide strong oxidative protection and improved bioavailability, and electrospun fibers, which offer enhanced light shielding and controlled release; however, they face scalability limitations. Current methods for analytical detection and quantification during its degradation are also discussed. This review reveals a trend toward rapid, high-throughput, and non-destructive analytical techniques, including the use of portable devices for in situ analysis of oil systems, FT-NIR spectroscopy with examples of rapid quantification in cereal matrices, and green HPLC approaches enabling the simultaneous detection of both fat- and water-soluble vitamins. Importantly, this review highlights the need for tailored delivery systems that account for the effect of processing and cooking on vitamin A stability, retention, and efficacy within complex food systems.</p>","PeriodicalId":17182,"journal":{"name":"Journal of the American Oil Chemists Society","volume":"103 9","pages":"1079-1097"},"PeriodicalIF":2.4,"publicationDate":"2026-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aocs.70119","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148871961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Partitioning of Phytochemicals During Oil Extraction From Idesia Fruits Using Supercritical Carbon Dioxide","authors":"Xiaobi Yang,&nbsp;Yong Zhu,&nbsp;Yusen Wu,&nbsp;Qifeng Wu,&nbsp;Daozhen Chen,&nbsp;Hui Yang,&nbsp;Likang Qin","doi":"10.1002/aocs.70112","DOIUrl":"https://doi.org/10.1002/aocs.70112","url":null,"abstract":"<div>\u0000 \u0000 <p>This study investigated the partitioning of phytochemicals during oil extraction from Idesia fruits using supercritical carbon dioxide. Idesia (<i>Idesia polycarpa</i> Maxim.) fruit powder was fractionated into oil and cake meal, both of which were subjected to phytochemical analysis. Additionally, the phytochemical profiles of the refined oils from the two processes were compared: supercritical carbon dioxide extraction (SCE)–derived Sichuan refined oil (SRO) and pressed refined oil (PRO). The results indicated that the majority of squalene partitioned into the oil fraction; α-tocopherol and β-tocopherol also tended to partition into the oil fraction, and the β-sitosterol accounted for more than 80% of total sterols. Conversely, large quantities of phenolic compounds (e.g., gallic acid, chlorogenic acid, and rutin) partitioned into the cake meal fraction, with proportions exceeding 98% for certain phenolics. Moreover, the SRO had higher concentrations of the phytochemicals present than PRO. Overall, this study elucidates the dynamic partitioning of phytochemicals in Idesia fruit during SCE, thereby providing a reference for evaluating Idesia oil quality.</p>\u0000 </div>","PeriodicalId":17182,"journal":{"name":"Journal of the American Oil Chemists Society","volume":"103 9","pages":"1067-1078"},"PeriodicalIF":2.4,"publicationDate":"2026-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148872117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sustainable Palm Oil Extraction and Trends in the Use of Green Technologies: State-of-the-Art and Future Directions","authors":"Constantino Lucas Queta,&nbsp;Alessandra Lopes de Oliveira,&nbsp;Aline Silva Mello Cesar","doi":"10.1002/aocs.70108","DOIUrl":"https://doi.org/10.1002/aocs.70108","url":null,"abstract":"<p>Palm oil, which is extracted from the mesocarp of the fruit of the <i>Elaeis guineensis</i> Jacq. palm tree, is the most widely produced vegetable oil in the world. The extraction of this substance typically utilizes the conventional pressing method, a technique that is advantageous due to its low operating cost and simplified process. However, a significant drawback pertains to the substantial amount of oil retained within the fibers, amounting to approximately 1% of the total oil produced. Consequently, the fiber may contain approximately 5 to 6% of residual oil. A plethora of studies have demonstrated the efficacy of methodologies such as supercritical fluid extraction (SFE), pressurized liquid extraction (PLE), subcritical water extraction (SBW), and aqueous enzyme extraction (WEE). In addition, techniques including ultrasound-assisted extraction (UAE), microwave-assisted extraction (WAE), and deep eutectic solvent (DES) have been shown to be effective. This review critically examines the underlying principles, performance, and sustainability implications of these emerging extraction technologies. The review highlights the potential of these technologies to enhance oil recovery, reduce environmental impacts, and improve process efficiency when compared to conventional extraction methods. This study systematically analyzes current advances and existing limitations to identify key research gaps related to process scalability and tech-economic feasibility. In addition, the review delineates prospective research trajectories that are oriented toward process optimization, hybrid extraction methodologies, life cycle assessment, and industrial-scale implementation. These research trajectories are intended to contribute to the advancement of palm oil extraction methodologies that are more efficient and sustainable.</p>","PeriodicalId":17182,"journal":{"name":"Journal of the American Oil Chemists Society","volume":"103 9","pages":"987-1003"},"PeriodicalIF":2.4,"publicationDate":"2026-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aocs.70108","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148872129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Hardener on Properties of Biobased Epoxy Thermosets From Polymerization of Epoxidized Soybean Oil With Citric and Itaconic Acids","authors":"Bryan R. Moser,&nbsp;Kadisha M. Culpepper,&nbsp;Zengshe Liu","doi":"10.1002/aocs.70116","DOIUrl":"https://doi.org/10.1002/aocs.70116","url":null,"abstract":"<div>\u0000 \u0000 <p>The effect of hardener on crosslink density and other properties of biobased epoxy thermosets derived from epoxidized soybean oil was studied. Curing reactions were self-catalyzed by itaconic and citric acids at 70°C and 120°C for 5 h to produce cross-linked polymer networks. Conversion and gel content ranged from 75.4% to 94.2% and 93.2% to 95.6%, respectively, and were enhanced by higher reaction temperature and stoichiometric ratio of crosslinker to epoxide. Citrate-based polymers exhibited higher crosslink densities (<i>υ</i>_c; 242.9–338.5 mol/m³) than the corresponding itaconate-based polymers (32.8–54.1 mol/m³). Additionally, <i>υ</i>_c increased with cure temperature and molar ratio of carboxylic acid to epoxide. Storage modulus (<i>G</i>′) and glass transition temperature (<i>T</i>_g) closely mimicked the behavior of <i>υ</i>_c, with citrates, higher curing temperature, and a higher molar ratio of acid affording increased <i>T</i>_g and <i>G</i>′ versus itaconates, lower temperature, and lower amount of acid. The sub-ambient <i>T</i>_g (−17.1°C to 9.5°C) and low <i>G</i>′ (0.3–11.1 MPa) suggested elastomeric applications. Temperatures corresponding to 10% mass loss (<i>T</i>₁₀) and the rate of maximum degradation (DTG) ranged from 254.5°C to 356.2°C and 391.0°C to 404.0°C, respectively. Lastly, chemical degradation studies demonstrated nearly complete hydrolysis (&gt; 94%) under alkaline (&gt; 94%) and acidic (&gt; 92%) conditions, highlighting the potential of these materials as cleavable biobased epoxy networks for sustainable applications where high flexibility, low mechanical strength, and end-of-life degradability are advantageous.</p>\u0000 </div>","PeriodicalId":17182,"journal":{"name":"Journal of the American Oil Chemists Society","volume":"103 9","pages":"1099-1107"},"PeriodicalIF":2.4,"publicationDate":"2026-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148871877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}