Article
Chemistry, Applied
Sara Arana-Pena, Nathalia S. Rios, Diego Carballares, Luciana R. B. Goncalves, Roberto Fernandez-Lafuente
Summary: CALB and CRL showed similar properties under different immobilization conditions, while RML displayed significant changes. The effects of immobilization conditions on substrate activity and stability vary greatly, requiring careful selection based on specific circumstances.
Article
Chemistry, Physical
Klaudia Karkeszova, Maria Mastihubova, Vladimir Mastihuba
Summary: The study demonstrates that kojic acid esters can be produced by various enzymes with different regioselectivity, with pig pancreatic lipase showing distinct stereo selectivity in the reaction.
Article
Biotechnology & Applied Microbiology
Yuzhen Cai, Qiaoyan Bai, Lifang Yang, Lianghua Tang, Min Su
Summary: This study investigates the effect of the C-terminal loop domain of Penicillium expansum lipase (PEL) on its regioselectivity and activity using homologous substitution and site-directed saturation mutagenesis. The mutants exhibited obvious sn-1,3 regioselectivity and significant changes in the substrate binding pocket. Additionally, changes in hydrophobicity affected the lipase activity.
BIOCHEMICAL ENGINEERING JOURNAL
(2022)
Article
Biochemistry & Molecular Biology
Ismail Hasnaoui, Ahlem Dab, Sondes Mechri, Houssam Abouloifa, Ennouamane Saalaoui, Bassem Jaouadi, Alexandre Noiriel, Abdeslam Asehraou, Abdelkarim Abousalham
Summary: A novel extracellular lipase P22 from Penicillium crustosum Thom was isolated and characterized. The specific activities of P22 lipase were found to be 5000 and 10,000 U/mg on olive oil and trioctanoin emulsions, respectively. It exhibited clear regioselectivity toward the sn-1 position of surface-coated triglycerides and showed high activity and stability in the presence of water-immiscible organic solvents, surfactants, and oxidizing agents. It also showed compatibility with commercial laundry detergents and effectively removed oil stains.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Review
Chemistry, Multidisciplinary
Max Lubberink, William Finnigan, Sabine L. Flitsch
Summary: Amide bonds are commonly formed in the pharmaceutical industry and there is a growing interest in biocatalytic methods for their synthesis. The use of low water systems and ATP-dependent enzymes have shown promise in driving amide bond formation. A publicly available database, RetroBioCat, has been compiled to provide literature on these methods.
Article
Biotechnology & Applied Microbiology
Hemi Cumming, Susan N. Marshall
Summary: The study focused on the synthesis of glyceryl caffeate esters and their effectiveness in protecting soybean oil from oxidation, revealing that the esterification reaction in propylene carbonate solvent could be performed without the need for molecular sieves, with excellent product performance. Different chain lengths of glyceryl caffeate esters showed comparable antioxidant effectiveness in soybean oil, with compounds containing a single fatty ester being slightly more effective than those containing two fatty esters.
JOURNAL OF BIOTECHNOLOGY
(2021)
Article
Food Science & Technology
Jihyun Hwang, Jiae Aum, Seong Jae Lee, Jeong Min Mun, Seung Wook Kim, Min-Yu Chung, In-Hwan Kim, Byung Hee Kim
Summary: This study aimed to investigate the regiospecificity of immobilized CALB in the solvent-free interesterification of triacylglycerol with fatty acid ethyl esters. The results showed that immobilized CALB exhibited distinct sn-1,3 regiospecificity.
FOOD SCIENCE AND BIOTECHNOLOGY
(2023)
Article
Chemistry, Organic
Dominik Koszelewski, Anna Brodzka, Arleta Madej, Damian Trzepizur, Ryszard Ostaszewski
Summary: Geminal diacetates are effective acyl donors for enzymatic acylation, showing high reactivity and regioselectivity. They can be used to synthesize various acetates with high yields and enantiomeric excesses.
JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Josu Lopez-Fernandez, Maria Dolors Benaiges, Xavier Sebastian, Jose Maria Bueno, Francisco Valero
Summary: Enzymatic synthesis of short-chain esters using covalently immobilised Rhizopus oryzae lipase was investigated. The best yield of isoamyl butyrate (ca. 100%) was obtained in cyclohexane as the reaction solvent. Optimum initial acid concentration and acid:alcohol mole ratio were determined to maximize the production of isoamyl butyrate with reused enzyme. The biocatalyst and reaction conditions proposed in this study could be used for industrial production of isoamyl esters.
Article
Chemistry, Applied
Xi Cao, Yayu Pan, Miao Qiao, Yongjun Yuan
Summary: In this study, it was found that Candida cylindracea lipase (CCL) has a strong ability to discriminate against erucic acid, which can reduce its content in rapeseed oil. The free fatty acids obtained from rapeseed oil can be used as raw materials for the synthesis of human milk fat substitutes through acidolysis catalyzed by Novozym 40086. The synthesized human milk fat substitute is similar to human milk fat.
Article
Biochemistry & Molecular Biology
Priscila M. Paiva Souza, Diego Carballares, Nerea Lopez-Carrobles, Luciana R. B. Goncalves, Fernando Lopez-Gallego, Sueli Rodrigues, Roberto Fernandez-Lafuente
Summary: The study immobilized lipase on agarose and treated the enzyme with different blocking agents. It was found that enzyme specificity changed significantly during inactivation, influenced by immobilization and inactivation conditions.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Chemistry, Multidisciplinary
Zhenjie Yu, Zhufan Zou, Ran Wang, Guangyi Li, Aiqin Wang, Yu Cong, Tao Zhang, Ning Li
Summary: Cyclopentadiene (CPD) and methylcyclopentadiene (MCPD) can be produced from xylose or extracted hemicellulose as the feedstock through a two-step bio-route. First, cyclopentanone (CPO) is obtained by selective hydrogenolysis of xylose or extracted hemicellulose over a Ru/C catalyst in an acid-free toluene/NaCl aqueous solution biphasic system. Then, CPO is converted to CPD or MCPD via cascade reactions over zinc molybdate catalysts.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Biochemistry & Molecular Biology
Fei-Fei Geng, Zhe Jiang, Yong-Hu Chen, Ning Li, Xue-Zheng Li
Summary: A chemical investigation of Angelica acutiloba identified 26 compounds, including 11 coumarins, 11 phthalides, one sterol, two polyacetylenes, and one bisbenzopyran. Several of these compounds were isolated for the first time from specific sources.
BIOCHEMICAL SYSTEMATICS AND ECOLOGY
(2023)
Article
Agricultural Engineering
Ning Yang, Xueru Sheng, Liting Ti, Haiyuan Jia, Qingwei Ping, Ning Li
Summary: This paper investigates the ball-milling process for biodiesel production using Kraft lignin activated carbon stabilized K2CO3. The biodiesel yield increased to 66% within 5 minutes and reached 100% within 25 minutes under optimal ball-milling conditions. Additionally, the power demand of the ball-milling method was found to be lower than the traditional thermocatalytic method. Therefore, the ball-milling method is an effective and economical process for biodiesel production.
BIORESOURCE TECHNOLOGY
(2023)
Article
Chemistry, Physical
Guang-Hui Lu, Min-Hua Zong, Ning Li
Summary: This study demonstrates the combination of electro-, photo-, and biocatalysis for the selective valorization of biomass-derived furfural into various C4 chemicals. The cascade reactions of electrochemical oxidations and photo-oxygenation synthesize maleic acid with a high yield. Sequential photoelectrooxidation and biocatalytic hydration are used to produce enantiopure chemicals. Additionally, a two-step synthesis of fumaric acid and its derivatives is performed using different catalysts. This chemobiocatalysis approach provides a powerful tool for the valorization of platform chemicals.
Article
Engineering, Aerospace
Xibin Cao, Ning Li, Shi Qiu, Chaoyong Li
Summary: This paper proposes a scheduling method based on grids coding for searching and tracking time-sensitive targets in a region. It assesses the observation problem and constructs a grids coding model for observation resources and tasks. A dynamic updating process of probability is established, taking into account the movement of the time-sensitive target, and a dynamic prediction model of target position is founded, considering the unpredictability of the time-sensitive target model. Ultimately, a mega-constellation searching technique is developed with the enhancement of information entropy of covering grids as the objective function.
AEROSPACE SCIENCE AND TECHNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Xingfan Gong, Jiacheng Xu, Tiantian Zhang, Yan Sun, Shiyu Fang, Ning Li, Jiali Zhu, Zuliang Wu, Jing Li, Erhao Gao, Wei Wang, Shuiliang Yao
Summary: Cu-doped manganese oxide (Cu-Mn2O4) prepared using aerosol decomposition showed excellent CO oxidation performance. The 0.5Cu-Mn2O4 catalyst with a hollow sphere morphology and high Mn3+, Cu+, and Oads ratios exhibited the best CO oxidation activity, with low T-50 and T-90 values. DRIFTS-MS analysis revealed that terminal-type oxygen (M=O) and bridge-type oxygen (M-O-M) on 0.5Cu-Mn2O4 were reactive at low temperatures and water had limited inhibitory effects on CO oxidation.
Article
Construction & Building Technology
Ning Li, Zuquan Jin, Kai Shen, Guangcheng Long, Yong Yu, Qiang Fu, Chuansheng Xiong, Bo Pang, Xiaoying Zhang
Summary: Three strategies, including rubber particles, steel fibers, and asphalt-coated coarse aggregate, were introduced to enhance the impact resistance of self-compacting concrete after freeze-thaw cycles. The impact compression properties of the modified concrete were evaluated using a split Hopkinson pressure bar. Modifying materials showed a significant strain rate effect on the dynamic properties of the concrete. The addition of modifying materials resulted in a lower decrease in the fineness modulus of residue and an improved impact toughness index, indicating reduced damage caused by freeze-thaw cycles and enhanced impact resistance.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Engineering, Marine
Yuchang Zhi, Jiemin Zhan, Renfang Huang, Yiwei Wang, Ning Li
Summary: This paper investigates the dynamic behavior of ventilated supercavities considering the effect of the free surface through numerical simulations. The presence of the free surface affects the length and diameter of the ventilated cavity, as well as the vertical velocity distribution between the free surface and the cavity. Two typical gas leakage mechanisms, namely the twin-vortex tube leakage mode and the re-entrant jet leakage mode, were observed at different immersion depths. The internal flow field of the ventilated supercavity can be classified into three regions: the internal boundary layer, the ventilation influence region, and the reverse flow region. The ventilated supercavity is influenced by both the free surface effect and the gravity effect as the distance between the free surface and the cavity decreases.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Environmental
Xuezhong Nie, Huixiang Li, Xiaoqiang Zhang, Ning Li, Zongchao Conrad Zhang
Summary: Copper on rutile TiO2 (TiO2-R) catalyst shows high activity, selectivity, and stability in the hydrogenation of nitroarenes to produce arylamines. Cu2O nanoparticles are essential for H2 dissociation, while dispersed single CuI ion sites serve as crucial steps for H migration and nitroarene adsorption/hydrogenation.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Medicinal
Heng Zhang, Xiao Guo, Di Zhou, Jiatong Wen, Yingzhan Tang, Jian Wang, Yang Liu, Gang Chen, Ning Li
Summary: In this study, a visible-light-induced intermolecular [2 + 2] photocycloaddition reaction was used to synthesize 20 derivatives of (perpendicular to)-millpuline A for bioactivity evaluation. The protective effects of (+/-)-millpuline A and compound B13a against NNK-induced lung cell injury were revealed. The target of (+/-)-millpuline A was determined to be SRC protein, and its inhibitory effect on SRC activity was demonstrated through a transcriptional mechanism. These findings provide valuable insights for the further development of flavonoids and understanding the bioactivity and mechanism of (+/-)-millpuline A.
Article
Materials Science, Composites
Ning Li, Saeed Ahmed Khan, Kun Yang, Kai Zhuo, Yixia Zhang, Hulin Zhang
Summary: A thermogalvanic organohydrogel electrolyte (OHE) was developed with Sn2+/Sn4+ as a redox couple and NaCl as an additional electrolyte, enabling interactions between visually impaired people, normal people, and auxiliary devices. The OHE exhibits favorable mechanical and thermoelectric performances, with a high Seebeck coefficient of -1.62 mV/K. It can withstand harsh environments with its anti-freezing, non-drying properties and wide working temperature range (-20 to 60 degrees C), and was successfully integrated into a self-powered Braille transmission interface for real-time Braille transmission and readout.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Computer Science, Artificial Intelligence
Wenling Li, Ning Li, Jianen Yan, Zhaoxin Zhang, Ping Yu, Gang Long
Summary: This paper proposes two watermarking algorithms for relational databases based on numeric and non-numeric data, which can effectively protect the copyright of the database with high security and strong robustness.
IEEE TRANSACTIONS ON KNOWLEDGE AND DATA ENGINEERING
(2023)
Article
Computer Science, Information Systems
Bing Xia, Shengpu Li, Ning Li, Hong Li, Xuguang Tian
Summary: This study improves the Serre standard model and proposes a method to effectively identify the surface defects of solar panels. By combining pre-processing and binary image processing, the features of solar panels are obtained and classified using the improved model, achieving high accuracy in defect recognition.
Article
Engineering, Electrical & Electronic
Jiang Mai, Sha Guijun, Li Ning
Summary: This paper proposes an infrared and visible image fusion algorithm based on guided filter and dual-tree complex wavelet transform, which overcomes the limitations of traditional image fusion algorithms and improves target clarity, edge and texture details, and contrast. The visible and high-frequency infrared image components are enhanced using guided filter, based on the characteristics of infrared and visible images. Then, an algorithm based on saliency adaptive weighting rules is used to fuse low-frequency subband components, and a rule based on Laplace energy sum and gradient value vector is used to fuse high-frequency subbands at different scales and directions. Finally, the fused coefficients are inverted using dual-tree complex wavelet transform to obtain the final reconstructed image. Experimental results demonstrate the improved performance of the proposed algorithm in terms of objective evaluation indicators, with clear target features, background texture, edge details, and appropriate overall contrast.
LASER & OPTOELECTRONICS PROGRESS
(2023)
Review
Chemistry, Multidisciplinary
Xiaoyu Zhang, Ning Li, Guorui Wang, Chi Zhang, Yu Zhang, Fanglei Zeng, Hailong Liu, Gang Yi, Zhongwei Wang
Summary: Flexible human body electronic sensors with flexibility, extensibility, and responsiveness are highly desirable. Polysiloxane materials have become the preferred choice as a flexible matrix for their good affinity towards the human body.
Article
Agricultural Engineering
Yinping Xiang, Meiying Jia, Rui Xu, Jialu Xu, Lele He, Haihao Peng, Weimin Sun, Dongbo Wang, Weiping Xiong, Zhaohui Yang
Summary: This study investigated the impact of the non-antibiotic pharmaceutical carbamazepine on antibiotic resistance genes (ARGs) during anaerobic digestion. The results showed that carbamazepine induced the enrichment of ARGs and increased the abundance of bacteria carrying these genes. It also facilitated microbial aggregation and intercellular communication, leading to an increased frequency of ARGs transmission. Moreover, carbamazepine promoted the acquisition of ARGs by pathogens and elevated their overall abundance.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Weixin Zhao, Tianyi Hu, Hao Ma, Dan Li, Qingliang Zhao, Junqiu Jiang, Liangliang Wei
Summary: This review summarizes the effects and potential mechanisms of biochar on microbial behavior in AD systems. The addition of biochar has been found to promote microbial colonization, alleviate stress, provide nutrients, and enhance enzyme activity. Future research directions include targeted design of biochar, in-depth study of microbial mechanisms, and improved models.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Christina Karmann, Anna Magrova, Pavel Jenicek, Jan Bartacek, Vojtech Kouba
Summary: This review assesses nitrogen removal technologies in reject water treatment, highlighting the differences in environmental impacts and economic benefits. Partial nitritation-anammox shows potential for economic benefits and positive environmental outcomes when operated and controlled properly.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Wei-Hao Huang, Ying-Ju Chang, Duu-Jong Lee
Summary: This study modified pinecone biochar with layered double hydroxide (LDH) to enhance its adsorption capacity for heavy metal and phosphate ions. The LDH-biochar showed significantly improved adsorption capacities for Pb2+ and phosphate, and a slight increase for Cu2+ and Co2+. The LDH layer enhanced the adsorption through various mechanisms.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Chao Song, Fanfan Cai, Shuang Yang, Ligong Wang, Guangqing Liu, Chang Chen
Summary: This paper developed a machine learning model to predict the biochemical methane potential during anaerobic digestion. Model analysis identified lignin content, organic loading, and nitrogen content as key attributes for methane production prediction. For feedstocks with high cellulose content, early methane production is lower but can be improved by prolonging digestion time. Moreover, lignin content exceeding a certain value significantly inhibits methane production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sang Min Lee, Ju Young Lee, Ji-Sook Hahn, Seung-Ho Baek
Summary: This study successfully developed an efficient platform strain using Yarrowia lipolytica for the bioconversion of renewable resources into adipic acid, achieving a remarkable increase in production level.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sefkan Kendir, Matthias Franzreb
Summary: This study presents a novel approach using magnetic separation to efficiently harvest freshwater microalgae, Chlorella vulgaris. By combining pH-induced calcium phosphate precipitation with cheap natural magnetite microparticles, harvesting efficiencies up to 98% were achieved in the model medium.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Ishaq Kariim, Ji-Yeon Park, Wajahat Waheed Kazmi, Hulda Swai, In-Gu Lee, Thomas Kivevele
Summary: The impact of reaction temperature, residence time, and ethanol: acetone on the energy compositions and yield enhancement of biocrudes was investigated. The results showed that under appropriate conditions, biocrudes with high energy and low oxygen content can be obtained, indicating a high potential for utilization.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xiyue Zhang, Xiyao Li, Liang Zhang, Yongzhen Peng
Summary: Intermittent aeration is an innovative approach to enhance nitrogen removal in low carbon-to-nitrogen ratio municipal sewage, providing an efficient strategy for the continuous plug-flow AOA process.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xu Yang, Mahmoud Mazarji, Mengtong Li, Aohua Li, Ronghua Li, Zengqiang Zhang, Junting Pan
Summary: This study investigated the impact of magnetite on the nitrogen cycle of pig manure biostabilisation. The addition of magnetite increased N2O emissions and decreased NH3 emissions during composting. It also increased the total nitrogen content but should be considered for its significant increase in N2O emissions in engineering practice.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Ty Shitanaka, Haylee Fujioka, Muzammil Khan, Manpreet Kaur, Zhi-Yan Du, Samir Kumar Khanal
Summary: The market value of microalgae has exponentially increased in the past two decades, thanks to their applications in various industries. However, the supply of high-value microalgal bioproducts is limited due to several factors, and strategies are being explored to overcome these limitations and improve microalgae production, thus increasing the availability of algal-derived bioproducts in the market.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Martin Kerner, Thorsten Wolff, Torsten Brinkmann
Summary: The efficiency of using enriched CO2 from flue gas for large-scale production of green microalgae has been studied. The results show that the use of membrane devices and static mixers can effectively improve the CO2 recovery rate and maintain the suitable pH and temperature during cultivation, achieving a more economical and sustainable microalgae production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rui Ma, Ji Li, Rd Tyagi, Xiaolei Zhang
Summary: This review summarizes the microorganisms capable of using CO2 and CH4 to produce PHAs, illustrating the production process, factors influencing it, and discussing optimization techniques. It identifies the challenges and future prospects for developing economically viable PHAs production using GHGs as a carbon source.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Bing Wang, Peng Zhang, Xu Guo, Xu Bao, Junjie Tian, Guomin Li, Jian Zhang
Summary: The addition of zeolite in the co-composting of chicken manure and straw significantly reduced the emissions of ammonia and N2O, and increased the nitrate content. Zeolite also promoted the abundance of nitrification genes and inhibited the expression of denitrification genes.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rohit Dey, Franziska Ortiz Tena, Song Wang, Josef Martin Messmann, Christian Steinweg, Claudia Thomsen, Clemens Posten, Stefan Leu, Matthias S. Ullrich, Laurenz Thomsen
Summary: This study investigated the operation of a 1000L microalgae-based membrane photobioreactor system for continuous secondary wastewater treatment. The research focused on a green microalgae strain called Desmodesmus sp. The study aimed to understand key trends and optimization strategies by conducting experiments in both summer and winter seasons. The findings showed that maintaining low cell concentrations during periods of light inhibition was beneficial for nutrient uptake rates. Effective strategies for enhancing algae-based wastewater treatment included cell mass recycling and adjusting dilution rates based on light availability.
BIORESOURCE TECHNOLOGY
(2024)
