Article
Agronomy
Vikas Chandra Gupta, Meenu Singh, Shiv Prasad, Bhartendu Nath Mishra
Summary: During the chemical hydrolysis of rice straw, several inhibitors such as furfural, 5-hydroxymethylfurfural (HMF), and phenolics are generated, which are toxic to yeast cells and can negatively impact yeast growth, metabolism, and ethanol production efficiency. Optimization of process variables can help reduce inhibitor generation and improve the efficiency of ethanol fermentation. This study aimed to develop an optimized process for minimizing inhibitor release during rice straw hydrolysis.
Article
Environmental Sciences
Hongbin Yan, Qi Zhang, Yunpu Wang, Xian Cui, Yuhuan Liu, Zhigang Yu, Shuming Xu, Roger Ruan
Summary: Microalgal biofilm cultivation using rice straw as carrier is a promising method for efficient microalgae production. The biomass productivity of unsterilized rice straw biofilm exceeds that of suspended culture. This study demonstrates the potential of using rice straw effectively as a carrier for microalgal biofilm, offering a new possibility for rice straw recycling.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Agricultural Engineering
Sumit Dhali, Rahul Jain, Anushree Malik, Satyawati Sharma, Ramesh Raliya
Summary: Rice straw hydrolysate (RSH) prepared at room temperature was found to contain high levels of silica and other nutrients. Cultivating Navicula sp. in a 30% dilution of RSH resulted in the best growth performance. The optimized cultivation process yielded frustule, carbohydrates, lipids, and proteins, and increased the theoretical methane yield compared to raw rice straw. This study provides a sustainable solution for managing rice straw residue and recovering nanoporous silica.
BIORESOURCE TECHNOLOGY
(2022)
Article
Energy & Fuels
Yogita Lugani, Jagdish Singh, Balwinder Singh Sooch
Summary: The study focuses on exploring the potential of a newly isolated bacterium, Pseudomonas putida BSX-46, for xylose reductase (XR) synthesis by tailoring its nutritional and cultural requirements. A simple media and a pretreatment process for rice straw were developed to enhance XR production. The research demonstrated that using waste rice straw hydrolysate at bioreactor level could significantly increase XR production compared to flask level.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Biotechnology & Applied Microbiology
L. Yin, M. X. Chen, T. H. Zeng, X. M. Liu, F. Zhu, R. Q. Huang
Summary: The study focused on using acid-treated rice straw hydrolysate as a carbon source for producing spores of Bacillus coagulans. The results demonstrated that this hydrolysate significantly increased spore yield. Significant medium components were identified and optimized through Plackett-Burman design and response surface methodology. The optimized medium showed potential for B. coagulans spore production.
LETTERS IN APPLIED MICROBIOLOGY
(2021)
Article
Energy & Fuels
Sumit Sharma, Shikha Singh, Saurabh Jyoti Sarma, Mohammad Danish
Summary: The first application of aerobic granulation technology for bioethanol production has been demonstrated. Using Saccharomyces cerevisiae aerobic granules, a reactor was created for ethanol production from rice straw hydrolysate (RSH). The yeast granules were developed within 4-6 days and found to produce ethanol (34.42 g/L) from pure glucose (80 g/L). A column filter was designed to remove toxic impurities from RSH, resulting in more effective ethanol production. This study demonstrates continuous bioethanol production for an extended period using yeast in the form of aerobic granules, which has the potential to improve bioethanol production efficiencies.
Article
Green & Sustainable Science & Technology
Raksha Nagpal, Nishi Kant Bhardwaj, Om Prakash Mishra, Ritu Mahajan
Summary: This study demonstrates the potential of crude xylano-pectinolytic enzymes in bio-pulping of rice straw to reduce environmental pollution and improve paper quality. The integration of bio-pulping strategy before chemical pulping enhances pulp yield, brightness, and physical strength properties, while reducing alkali dose and pollution. Using crude enzymes produced by a bacterial isolate, this environmentally sustainable approach can lead to cleaner pulping of rice straw.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Biotechnology & Applied Microbiology
Keerthi Sasikumar, Silvin Hannibal, Volker F. Wendisch, K. Madhavan Nampoothiri
Summary: This study successfully utilized biomass-derived sugars to produce non-proteinogenic amino acid 5-amino valeric acid and the diamine putrescine using engineered Corynebacterium glutamicum. A combination of glucose and xylose in synthetic medium showed improved product yields, and alkali-treated enzyme-hydrolyzed rice straw was demonstrated as an effective raw material for fermentation.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Green & Sustainable Science & Technology
Bo Pang, Tong Zhou, Xue-Fei Cao, Bao-Cheng Zhao, Zhuohua Sun, Xi Liu, Yue-Ying Chen, Tong-Qi Yuan
Summary: This study proposes a viable strategy to combine rice straw and waste bamboo particles into bio-composites using green adhesives, which can replace traditional wood-particle boards and help economize on wood resources. The obtained bio-composites have good mechanical strength and water resistance, and can contribute to carbon sequestration from agro-industrial lignocellulose wastes.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Environmental
Xiao-Xing Li, Shi-Peng Wang, Zhao-Yong Sun, Song-Tao Wang, Wen-Liang Shuai, Cai-Hong Shen, Yue-Qin Tang
Summary: The study compared the performance of rice straw composting using urea and protein hydrolysate from leather waste as nitrogen sources. Results showed that protein hydrolysate addition led to faster temperature increase rate, higher degradation efficiency, and greater germination indices. Bacterial community composition was strongly correlated with physicochemical properties, and protein hydrolysate accelerated the succession rate of the microbial community.
Article
Biochemistry & Molecular Biology
Changsomba Chang, Pratima Gupta
Summary: This paper addresses the issues of waste-to-value generation and management by demonstrating the in situ depolymerization of lignin extracted from waste rice straw using the microbial electro-Fenton process in a microbial peroxide-producing cell (MPPC), which also synchronously treats wastewater. The results show that this method efficiently depolymerizes lignin, produces valuable compounds, and effectively treats wastewater.
Article
Agricultural Engineering
Yuanhang Ai, Shengqiu Feng, Youmei Wang, Jun Lu, Mengdan Sun, Huizhen Hu, Zhen Hu, Ran Zhang, Peng Liu, Hao Peng, Yanting Wang, Limin Cao, Tao Xia, Liangcai Peng
Summary: This study successfully improved lignocellulosic substrates and increased bioethanol yields in transgenic rice through the selection of specific genes and green-style pretreatments. The results show a novel strategy for high bioethanol production by integrating genetically-improved lignocellulosic substrates with optimal one-pot-process technology in bioenergy crops.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Chemistry, Physical
Do-Hyung Kim, In-Seung Jo, Beom-Jung Kang, Byung-Don Lee, Sunil Kumar, Sang-Hyoun Kim, Jeong-Jun Yoon
Summary: This study investigated the properties of hydrolysates obtained from acid and alkali hydrolysis for bio-hydrogen production. Results showed that 1.0% H2SO4 hydrolysate had the highest hydrogen production efficiency, while hydrogen production and metabolite distribution depended on the sugars and by-product composition in the hydrolysate.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Snunkhaem Echaroj, Nattadon Pannucharoenwong, Hwai Chyuan Ong, Phadungsak Rattanadecho
Summary: The research investigated the parameters for supercritical ethanol liquefaction of rice straw over sulfated graphene oxide. Results showed that reaction temperature, sulfuric acid concentration, and catalyst amount significantly affected the production and quality of biofuel, with a decrease in biofuel production when sulfuric acid concentration exceeded 6M.
Article
Agricultural Engineering
Liqin Wang, Xue Wang, Yangyang Song, Lihua Sun, Xiaomeng Chen, Junqiu Wu, Caihong Song, Yue Zhao
Summary: This study confirmed the role of inhibitors addition, ATP and MA, in nitrogen availability during rice straw composting. The results showed that inhibitors addition slowed down ammonium and nitrate nitrogen mineralization rates and improved the retention of organic nitrogen components. The addition of inhibitors also altered bacterial community structure and enhanced conversion between nitrogen components, leading to improved compost quality.
BIORESOURCE TECHNOLOGY
(2022)
Article
Plant Sciences
Aswathy Udayan, Ashutosh Kumar Pandey, Ranjna Sirohi, Nidhin Sreekumar, Byoung-In Sang, Sung Jun Sim, Sang Hyoun Kim, Ashok Pandey
Summary: In the current global scenario, the world is facing challenges due to population growth, industrialization, and urbanization. This has led to an increased demand for nutrients and renewable energy sources. Microalgae are considered a promising candidate for high-value metabolites and alternative energy sources. However, current cultivation systems for microalgae do not offer feasibility in terms of technology, economics, energy, and environmental sustainability.
PHYTOCHEMISTRY REVIEWS
(2023)
Article
Plant Sciences
Anil Kumar Patel, Akash Pralhad Vadrale, Reeta Rani Singhania, Philippe Michaud, Ashok Pandey, Shu-Jen Chen, Chiu-Wen Chen, Cheng-Di Dong
Summary: In recent years, algal polysaccharides have been extensively studied for pharmaceutical, nutraceutical, and biomedical applications due to their promising bioactive properties. They are also increasingly being used in industrial and dietary sectors. The marine algae contain a variety of polysaccharides that have a significant impact on the global economy. In the pharmaceutical and biomedicine industries, alginates, fucoidans, ulvans, carrageenans, and chitin are becoming increasingly important.
PHYTOCHEMISTRY REVIEWS
(2023)
Review
Environmental Sciences
Yuwen Zhou, Manish Kumar, Surendra Sarsaiya, Ranjna Sirohi, Sanjeev Kumar Awasthi, Raveendran Sindhu, Parameswaran Binod, Ashok Pandey, Nanthi S. Bolan, Zengqiang Zhang, Lal Singh, Sunil Kumar, Mukesh Kumar Awasthi
Summary: The increasing presence of micro-nano plastics (MNPs) in the natural ecosystem poses a global threat to the environment and living organisms. Microbial remediation is considered a greener technology to address this issue, with the key being to understand the pathways used by microbes to utilize plastic fragments as a carbon source. Various remediation technologies, such as enzymatic, advanced molecular, and bio-membrane technologies, are being deployed to foster the bioremediation of MNPs, with a focus on their pros and cons and prospects for future research.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Energy & Fuels
Meera Christopher, AthiraRaj Sreeja-Raju, Prajeesh Kooloth-Valappil, Digambar Vitthal Gokhale, Rajeev K. Sukumaran
Summary: This study compared the transporters and extracellular proteins of Penicillium janthinellum PJ-1366 and Trichoderma reesei RUT-C30, and found that PJ-1366 has a larger and more diverse repertoire of cellulase-related proteins. Additionally, PJ-1366 encodes more proteins involved in carbohydrate metabolism, potentially enabling it to act on a wider range of substrates. The study also identified structural differences in some untranslated protein response effectors in PJ-1366, which may facilitate unique modes of cellulase regulation.
BIOENERGY RESEARCH
(2023)
Review
Environmental Sciences
Luong N. Nguyen, Minh T. Vu, Hang P. Vu, Md. Abu Hasan Johir, Leen Labeeuw, Peter J. Ralph, T. M. I. Mahlia, Ashok Pandey, Ranjna Sirohi, Long D. Nghiem
Summary: This paper reviews the current state of microalgal culture development for carbon capture and utilization (CCU) and highlights its potential contribution to addressing climate change challenges. Innovative system designs are crucial to achieve large-scale CO2 capture by microalgae, and downstream processes of microalgal culture are important for the overall success of microalgae-based CCU.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Environmental Sciences
Reshmy Rajasekharan, Arun Karthika Bahuleyan, Aravind Madhavan, Eapen Philip, Raveendran Sindhu, Parameswaran Binod, Mukesh Kumar Awasthi, Ashok Pandey
Summary: This study investigates the utilization of jackfruit peel as a source for natural and fully biodegradable nanocellulose, which is used in the production of bioplastics with Azadirachta indica extracts and polyethylene glycol for antibacterial properties. The findings reveal that the developed bioplastics have favorable physicochemical properties and biodegradability, and they exhibit strong antibacterial activity against food spoilage bacteria and prevent biofilm formation. These bioplastics can be considered as suitable substitutes for food packaging materials and wound dressings.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Plant Sciences
Anh Tuan Hoang, Ranjna Sirohi, Ashok Pandey, Sandro Nizetic, Su Shiung Lam, Wei-Hsin Chen, Rafael Luque, Sabu Thomas, Muslum Arici, Van Viet Pham
Summary: This paper presents recent advances and potential advantages of microalgae in biofuel production, as well as their role in the energy and environmental sectors. The challenges related to cultivation, harvesting techniques, and downstream processes are discussed, along with promising solutions for industrial-scale production. Additionally, the paper analyzes the role of microalgae in the circular economy.
PHYTOCHEMISTRY REVIEWS
(2023)
Review
Plant Sciences
Sabeela Beevi Ummalyma, Ranjna Sirohi, Aswathy Udayan, Pooja Yadav, Abhay Raj, Sang Jun Sim, Ashok Pandey
Summary: Microalgae are cell factories that can be used to produce renewable energy, food, feed, pharmaceuticals, and nutraceuticals. The challenges of mass cultivation and biomass recovery limit the industrial application of microalgae. Cultivating microalgae in wastewater has been encouraged for sustainable bioeconomy. Wastewater from the food industry provides a less-toxic growth medium for low-cost microalgal biomass production. Microalgae are potential biocatalysts for wastewater bioremediation and offer a universal alternative for resource recovery from wastewater.
PHYTOCHEMISTRY REVIEWS
(2023)
Article
Biochemical Research Methods
Selim Ashoor, Kiran Kumar Mallapureddy, Rajeev K. Sukumaran
Summary: Sequential pretreatment using different NaOH and H2SO4 concentrations was evaluated for efficient hydrolysis of rice straw. The biomass pretreated with sequential H2SO4 and NaOH achieved higher sugar yield compared to sequential NaOH and H2SO4 pretreatment. Increasing NaOH concentration improved the sugar yields in both pretreatment methods.
PREPARATIVE BIOCHEMISTRY & BIOTECHNOLOGY
(2023)
Article
Engineering, Environmental
Wei-Hsin Chen, Anh Tuan Hoang, Sandro Nizetic, Ashok Pandey, Chin Kui Cheng, Rafael Luque, Hwai Chyuan Ong, Sabu Thomas, Xuan Phuong Nguyen
Summary: Wastewater treatment can help reduce water shortages and recover energy and nutrients. Adsorption-based wastewater purification is a desirable method for removing heavy metals, even at low concentrations. Biochar has received significant attention for controlling water contamination due to its numerous advantages and tunable properties. Studying the link between biochar and resource rehabilitation, as well as its application in wastewater treatment, is crucial.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Environmental Sciences
Rekha Unni, R. Reshmy, M. S. Latha, Eapen Philip, Raveendran Sindhu, Parameswaran Binod, Ashok Pandey, Mukesh Kumar Awasthi
Summary: Nanocellulose fibers are widely used in various applications due to their sustainability and better performance compared to traditional petrochemical-based plastics. This study aims to improve the mechanical and thermal properties of cellulose nanofibers through chemical crosslinking, and the effects of different factors on the fiber properties are investigated.
Review
Environmental Sciences
Vivek Kumar Gaur, Ranjna Sirohi, Mohd Ishfaq Bhat, Krishna Gautam, Poonam Sharma, Janmejai Kumar Srivastava, Ashok Pandey
Summary: The recent studies have shown that micro/nano plastics and antimicrobial resistance genes have harmful effects on the environment and human health. However, there is a lack of research on the interactions between these two factors and their combined influence. The interaction of microplastics has led to the formation of new plastics such as plastiglomerates, pyroplastics, and anthropoquinas. Additionally, the occurrence of microplastics has been found to contribute to the emergence of antimicrobial resistance genes and other pollutants such as polyaromatic hydrocarbons and pesticides. The excessive use of antibiotics following the Covid outbreak has further exacerbated the detrimental effects on human health. This study highlights the relationship between microplastics and antibiotic resistance generation, evaluates the factors of uncontrolled antibiotic use and negligent plastic consumption, and provides future research prospects to accurately assess the serious environmental occurrence of these pollutants.
Article
Chemistry, Multidisciplinary
Hoang Anh Tuan, Ashok Pandey, Chen Wei-Hsin, Shams Forruque Ahmed, Sandro Nizetic, Kim Hoong Ng, Zafar Said, Duong Xuan Quang, Umit Agbulut, Hady Hadiyanto, Nguyen Xuan Phuong
Summary: Hydrogen energy is considered an attractive alternative to fossil fuels due to its environmental friendliness. Photocatalysis-derived hydrogen from water splitting is believed to be the optimal solution for meeting long-term sustainability and increased energy demands. Metal and carbon-supported photocatalysts show great potential for solar-driven hydrogen production from water. This review discusses the important aspects of different photocatalytic genres and provides new directions for more advanced performance.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Energy & Fuels
Anh Tuan Le, Ashok Pandey, Ranjan Sirohi, Prabhakar Sharma, Wei-Hsin Chen, Nguyen Dang Khoa Pham, Viet Dung Tran, Xuan Phuong Nguyen, Anh Tuan Hoang
Summary: Biochar has applications in energy and environmental fields. To predict its characteristics, a hybrid technique combining machine learning algorithms and game theory-based SHAP analysis was developed. The BRT-based model showed the best prediction performance and SHAP analysis revealed temperature as the main factor affecting the predictions. This hybrid technique provides valuable insights for improving control and application of biochar.
Article
Biology
Neha Kumari, Abha Pandey, Amit Gupta, Sonal Mishra, Rajeshwar P. Sinha
Summary: The investigation revealed that scytonemin, a photoprotective compound found in cyanobacteria, helps these organisms survive and thrive in extreme environments by counteracting the harmful effects of solar radiation. This compound is considered a key ingredient for the development of novel drugs and natural sun protection products.
Article
Chemistry, Multidisciplinary
Xuemei Liu, Chaonan Cui, Shuoshuo Wei, Jinyu Han, Xinli Zhu, Qingfeng Ge, Hua Wang
Summary: This study presents a new strategy for designing efficient photocatalysts that can convert CO2 into hydrocarbons by utilizing synergistic catalytic sites. The findings provide a solution for the selective photocatalytic reduction of CO2 to CH4.
Article
Chemistry, Multidisciplinary
Chengxian Hu, Dan Wang, Lu Wang, Ying Fu, Zhengyin Du
Summary: A novel one-pot, three-component reaction conducted under electrochemical conditions was studied. The reaction involved 2-aminothiophenols, aldehydes, and malononitrile, using TBABF4 as an electrolyte and CuI as a catalyst. The proposed reaction mechanism suggested that CuI served as an electron relay. This method offers simplified operation, high atom economy, and mild reaction conditions.
Article
Chemistry, Multidisciplinary
Zhi Yang, Yu Chen, Linxi Wan, Yuxiao Li, Dan Chen, Jianlin Tao, Pei Tang, Fen-Er Chen
Summary: A highly enantioselective method for the complete hydrogenation of pyrimidinium salts using Ir/(S,S)-f-Binaphane complex as the catalyst was developed. This method provides easy access to fully saturated chiral hexahydropyrimidines, which are prevalent in many bioactive molecules. The reactions exhibit high yields and enantioselectivities under mild reaction conditions without additives. Successful application of this methodology in a continuous flow fashion further extends its practical utility.
Article
Chemistry, Multidisciplinary
Tina Jeoh, Jennifer Danger Nill, Wujun Zhao, Sankar Raju Narayanasamy, Liang Chen, Hoi-Ying N. Holman
Summary: In this study, the enzymatic hydrolysis of cellulose was investigated using real-time infrared spectromicroscopy. The spatial heterogeneity of cellulose was found to impact the hydrolysis kinetics. Hydration affected cellulose ordering, and Cel7A preferentially removed less extensively hydrogen bonded cellulose.
Article
Chemistry, Multidisciplinary
Tiphaine Richard, Walid Abdallah, Xavier Trivelli, Mathieu Sauthier, Clement Dumont
Summary: An effective method of grafting functionalities onto lignin based on glycerol carbonate has been developed using an efficient nickel-catalysed telomerisation reaction. This method allows lignin to have new reactive functions and reduces the glass transition temperatures of modified lignins, thereby expanding the application range of lignin-based resins.
Article
Chemistry, Multidisciplinary
Jing Qi, Xiyan Wang, Gan Wang, Srinivas Reddy Dubbaka, Patrick ONeill, Hwee Ting Ang, Jie Wu
Summary: This study presents a green and environmentally friendly approach for the synthesis of imides using electrocatalytic oxidation with H2O as the oxygen source. The method eliminates the need for toxic or expensive oxidants and achieves high yields under mild reaction conditions. It shows broad substrate compatibility and potential for industrial applications.
Article
Chemistry, Multidisciplinary
Babasaheb Sopan Gore, Lin-Wei Pan, Jun-Hao Lin, Yi-Chi Luo, Jeh-Jeng Wang
Summary: Here, we report a visible light-promoted intramolecular radical cascade reaction for the construction of fluorenol and naphthalene-fused cyclopropyl carbaldehyde derivatives. This method offers mild reaction conditions, a broad substrate scope, excellent step efficiency, and scalability, without the need for external chemical oxidants. The novelty of this protocol was demonstrated by synthesizing chrysene analogs and performing late-stage functionalizations.
Article
Chemistry, Multidisciplinary
Juho Antti Sirvio, Idamaria Romakkaniemi, Juha Ahola, Svitlana Filonenko, Juha P. Heiskanen, Ari Ammala
Summary: This article discusses the method of using supramolecular interaction between an aromatic hydrogen bond donor and lignin to achieve rapid delignification of softwood at low temperatures.
Article
Chemistry, Multidisciplinary
Yunyan Meng, Chunxiang Pan, Na Liu, Hongjiang Li, Zixiu Liu, Yao Deng, Zixiang Wei, Jianbin Xu, Baomin Fan
Summary: A novel visible light-driven synthesis method for 2,3-diamines has been developed, which has mild conditions, avoids the use of metal reagents, and can synthesize diamines and diols in one pot.
Article
Chemistry, Multidisciplinary
Mingqing Huang, Haiyang Huang, Mengyao You, Xinxin Zhang, Longgen Sun, Chao Chen, Zhichao Mei, Ruchun Yang, Qiang Xiao
Summary: A direct air-oxidized strategy for the synthesis of benzo[b]phosphole oxides was developed in this study. Arylphosphine oxides were transformed into phosphinoyl radicals, which were further combined with various alkynes to achieve the desired products. DFT calculations revealed the mechanism of phosphinoyl radical formation.
Article
Chemistry, Multidisciplinary
Anwei Wang, Jiayin Huang, Chunsheng Zhao, Yu Fan, Junfeng Qian, Qun Chen, Mingyang He, Weiyou Zhou
Summary: This study demonstrates an innovative strategy for the aerobic oxidation of C(sp(3))-H bonds using gamma-valerolactone. By optimizing the reaction conditions and utilizing specific catalysts, efficient oxidation of C(sp(3))-H bonds is achieved with good chemoselectivity in certain cases.
Article
Chemistry, Multidisciplinary
Shun Li, Likai Tong, Zhijian Peng, Bo Zhang, Xiuli Fu
Summary: Sulfide compounds show promise as electrocatalysts for water splitting, but their performance is limited by factors such as limited active sites and hindered substance transport. This study successfully prepared a high-entropy sulfide (ZnCoMnFeAlMg)(9)S-8, which reduced grain size and increased specific surface area, enabling the realization of a dual-functional catalyst with multiple catalytic sites. High entropy also modulated the electronic properties of sulfides, reducing the potential energy barrier for hydrolysis. This research introduces a new approach for functionalizing high entropy nanomaterials and improves the performance of water splitting catalysts.
