Article
Biochemistry & Molecular Biology
Nishal M. Egodawaththa, Amy L. Knight, Jingxuan Ma, D. Andrew Knight, Eric Guisbert, Nasri Nesnas
Summary: Silver nanoparticles conjugated with organic ligands have been successfully synthesized and demonstrated significant antimicrobial activity and antibacterial capabilities against E. coli. The synthesis of functionalized silver nanoparticles is critical for the further development of silver-nanoconjugated antibacterial agents.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Multidisciplinary
Qui Quach, Tarek M. Abdel-Fattah
Summary: In this study, an effective method of enhancing the antibacterial property of graphene oxide was developed by growing nanosilica on its surface. Functionalized silver nanoparticles were also added to create a composite material with antimicrobial effects.
Article
Biology
Wajheeba Khan, Naeem Khan, Nargis Jamila, Rehana Masood, Aaliya Minhaz, Farhat Amin, Amir Atlas, Umar Nishan
Summary: This study successfully synthesized silver nanoparticles using aqueous extracts of Rhus javanica, Rumex hastatus, and Callistemon viminalis. The structural and size analysis of the synthesized nanoparticles was confirmed using spectroscopic techniques and microscopy. The synthesized silver nanoparticles showed potential free radical scavenging, antibacterial, and catalytic properties, suggesting their promising role in drug development and remediation of industrial effluents.
SAUDI JOURNAL OF BIOLOGICAL SCIENCES
(2022)
Article
Chemistry, Physical
Zhibao Zheng, Weizhen Liang, Renzhi Lin, Zhe Hu, Yichao Wang, Hongsheng Lu, Wenwu Zhong, Shijie Shen, Yin Pan
Summary: Exploring new antibacterial materials is crucial for preventing bacterial transmission and safeguarding human health. In this study, ZnO/In2O3-Ag nanofibers were prepared by electrospinning and subsequent sintering, resulting in uniformly dispersed silver nanoparticles with high purity and diameters ranging from 90 to 110 nm. The nanofibers exhibited bactericidal effects on both Staphylococcus aureus and Escherichia coli, with a particularly strong inhibitory effect on E. coli.
Article
Biotechnology & Applied Microbiology
Siqi Bao, Shuanghui Sun, Lin Li, Lei Xu
Summary: In this study, Ag-TiO2/ZIF-8 material with good environmental friendliness and biological antibacterial activity was prepared by solvothermal method. The structure and morphology of the synthesized material were characterized, and it was found that 20 wt.% Ag-TiO2/ZIF-8 had the best bacteriostatic effect on Escherichia coli and Bacillus subtilis under dark and UV conditions. The excellent antibacterial activity of Ag-TiO2/ZIF-8 is attributed to the synergistic effect of Ag-TiO2 and ZIF-8 under UV light.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Chemistry, Analytical
Congling Yang, Rui Jian, Ke Huang, Qilin Wang, Bo Feng
Summary: A method was developed for speciation analysis and accurate detection of silver ions and silver nanoparticles at trace levels. The results indicate that silver nanoparticles anchored on polydopamine/titania nanotubes play a crucial role in bactericidal action, while released silver ions synergistically enhance the antibacterial activity.
MICROCHEMICAL JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
Manaal Sheerin Khan, S. Ranjani, S. Hemalatha
Summary: Green nanotechnology has been utilized to synthesize silver nanoparticles from red algae K. alvarezii, which have low toxicity and cost-effectiveness. The bioactive molecules extracted from K. alvarezii were used as potential reducing agents, successfully controlling bacterial growth with the synthesized nanoparticles.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Paper & Wood
Nguyen Thi Thuy Linh, Tran Chau Diep, Tran Tuong Vy, Nguyen Minh Dat, Dinh Ngoc Trinh, Doan Ba Thinh, Nguyen Duc Viet, Nguyen Duy Hai, Le Minh Huong, Ninh Thi Tinh, Mai Thanh Phong, Nguyen Huu Hieu
Summary: In this study, a cotton fabric with immobilized silver nanoparticles on reduced graphene oxide (Ag/rGO/cotton) was successfully prepared using dip-coating and supplemented with vitamin C as a reducing agent. The modified cotton exhibited uniform distribution of silver nanoparticles on graphene oxide sheets, as well as high antibacterial activity and effective hydrophobicity.
Review
Polymer Science
Md. Amdadul Huq, Md. Ashrafudoulla, M. Mizanur Rahman, Sri Renukadevi Balusamy, Shahina Akter
Summary: Green synthesis of silver nanoparticles using biological resources is a convenient, economical, and environmentally friendly method. Plant extracts and microorganisms can act as reducing and capping agents in the synthesis of silver nanoparticles. These biosynthesized silver nanoparticles have potential applications in biomedical science, particularly as antibacterial agents.
Article
Green & Sustainable Science & Technology
Harshiny Muthukumar, Santosh Kumar Palanirajan, Manoj Kumar Shanmugam, Pugazhendhi Arivalagan, Sathyanarayana N. Gummadi
Summary: In this study, silver oxide nanoparticles (Ag2O-NPs) were synthesized using green amaranth leaf extract and studied for their degradation of caffeine, inactivation of E. coli, antibacterial and antioxidant activities. The nanoparticles showed higher bactericidal effects on Gram-negative bacteria and achieved significant photocatalytic inactivation of E. coli. The results suggest that Ag2O-NPs can be used in environmental applications such as inactivation of harmful bacteria and degradation of organic pollutants.
CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY
(2022)
Article
Biochemical Research Methods
Joshua M. Herzog, Volker Sick
Summary: Ultraviolet (UV)-excited visible fluorescence is an attractive option for low-cost, low-complexity, rapid imaging of bacterial and fungal samples for imaging diagnostics in the biomedical community. This study characterized two non-pathogenic bacteria samples and a wild-cultivated green bread mold fungus sample spectroscopically for diagnostic design. Results showed that fluorescence imaging is feasible for as few as 35 bacteria cells per pixel and that the fluorescence intensity per unit volume is similar for the three samples tested. A discussion and model of the mechanism of bacterial fluorescence in E. coli is provided.
JOURNAL OF FLUORESCENCE
(2023)
Article
Chemistry, Multidisciplinary
Xiuxia Yu, Junyu Li, Dashuai Mu, Hui Zhang, Qiaoxi Liu, Guanjun Chen
Summary: This study presents a novel biosynthesis method using secondary metabolites of Bacillus subtilis to synthesize silver nanoparticles, and evaluates their antibacterial activity, demonstrating promising antimicrobial effects.
GREEN CHEMISTRY LETTERS AND REVIEWS
(2021)
Article
Biochemistry & Molecular Biology
Sarabjot Kaur, Rajneesh Dadwal, Hemraj Nandanwar, Sanjeev Soni
Summary: This study investigates the limitations of triangular silver nanoplates (Delta AgNPs) in antibacterial activity and demonstrates the photothermal enhancement for Bacillus subtilis at high bacterial loads. The results show that photothermally activated Delta AgNPs can irreversibly damage the bacteria due to multiple targeting mechanisms, providing a potential antimicrobial agent for high bacterial loads. The study suggests the broad application of photothermal techniques for scenarios involving high cell density.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY
(2023)
Article
Environmental Sciences
Sabah M. Abdelbasir, Diaa A. Rayan, Mahmoud M. Ismail
Summary: This study investigated the recovery of copper and copper oxide as nanosized particles from waste printed circuit boards (WPCBs) using a hydrometallurgical process combining ammonia/ammonium chloride leaching and reduction with L-ascorbic acid. The results showed that 96.7% of copper could be recovered at a temperature of 35℃ for 2 hours with a concentration of 2 mol/L of ammonium chloride and ammonia. The synthesized particles exhibited spherical and distorted sphere morphology with average particle sizes of 460 nm and 50 nm for Cu and CuO nanoparticles, respectively. The Cu/CuO blend showed notable antibacterial, antifungal, and photocatalytic activities.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Chia-Hung Chen, Yen-Ping Peng, Ming-Hsun Lin, Ken-Lin Chang, Yung-Chang Lin, Jian Sun
Summary: This study successfully utilized Fe/TNAs to remove E. coli in a photoelectrochemical system, showing higher photocurrent and longer electron lifetime compared to traditional photolysis and photocatalysis methods. Fe/TNAs demonstrated the best removal efficiency for methyl orange degradation in terms of current-light response and electrochemical impedance spectroscopy measurements.
Review
Food Science & Technology
Indra Bhusan Basumatary, Avik Mukherjee, Vimal Katiyar, Santosh Kumar
Summary: Consumers' preference for healthy and nutritious diet has led to an increasing demand for fresh fruits and vegetables worldwide. However, these perishable commodities are prone to quality loss and reduced shelf-life due to physical damage, moisture loss, biochemical changes, and postharvest microbial decay. Plastic packaging is an effective strategy to extend the postharvest-life of whole and cut fruits and vegetables, but it has become a significant environmental concern. Biopolymer based films and coatings, reinforced with nanomaterials, offer an environmentally friendly alternative packaging for food, improving physico-chemical and mechanical properties and adding antimicrobial and/or antioxidant activities. This review discusses the effectiveness of biopolymer based nanocomposite films and coatings in extending the shelf-life of packaged fruits and vegetables, with reports showing an improvement of at least 4-5 days to several months.
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
(2022)
Article
Materials Science, Multidisciplinary
Yadagiri L. N. K. Mallela, Se Young Jeong, Santosh Kumar, Jae-Suk Lee
Summary: Silica nanoparticles with hyperbranched polyglycidol (hbP) grafts were synthesized and their ionic conductivity was enhanced by end functionalization with a nitrile group. Among the different batches of hbPs, the 6th-batch CN-hbP-SiO2 nanoparticles showed the best ionic conductivity when blended with PEO.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2021)
Article
Biochemistry & Molecular Biology
Santosh Kumar, Fei Ye, Babak Mazinani, Sergey Dobretsov, Joydeep Dutta
Summary: Functional nanocomposites composed of biopolymers and zinc oxide (ZnO) nanoparticles have shown promising applications in antifouling coatings. A study demonstrated that the addition of an amorphous tin dioxide (SnOx) shell on the surface of ZnO improved the chemical stability of the photocatalyst nanoparticles, resulting in enhanced photocatalytic performance in degrading dyes under visible light. Incorporating photocatalysts into chitosan-based coatings enhanced thermal stability and inhibited bacterial growth in natural seawater, showing potential for effective biofouling prevention.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Chemistry, Multidisciplinary
Santosh Kumar, Hocheol Yoon, Hyeonghun Park, Geumyong Park, Seokho Suh, Hyeong-Jin Kim
Summary: In this study, a microporous nanofiber layer of polyacrylonitrile (PAN) was used as a current collector for the anode in order to inhibit dendrite formation in aqueous rechargeable Zn-ion batteries. The symmetrical cell equipped with this new fabricated electrode showed stable cycles without a short circuit, and the full cell formed with MnO2 as the cathode exhibited improved cycle stability.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Engineering, Electrical & Electronic
R. Narzary, B. Dey, L. Chouhan, S. Kumar, S. Ravi, S. K. Srivastava
Summary: This study investigates the effects of Ag-Mg co-doping on the structural, dielectric, optical, and magnetic characteristics of SnO2 compounds. The results show that Ag-Mg co-doping leads to changes in these properties, highlighting its potential for spintronic applications.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Review
Chemistry, Applied
Santosh Kumar, Sweety Kalita, Abhijit Das, Pradip Kumar, Shiv Singh, Vimal Katiyar, Avik Mukherjee
Summary: The wastage of perishable foods is a challenge in the food industry, and Aloe vera, with its antimicrobial and antioxidant properties, can be used as a sustainable alternative in food preservation and packaging.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Food Science & Technology
Indra Bhusan Basumatary, Avik Mukherjee, Vimal Katiyar, Joydeep Dutta, Santosh Kumar
Summary: In this study, chitosan-based nanocomposite formulations with added eugenol and Aloe vera gel were used for active coating of pineapples. These coatings enhanced the shelf-life of the fruit and preserved its quality, while also exhibiting antimicrobial activities against bacterial pathogens and fungal isolates.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Food Science & Technology
L. Susmita Devi, Sweety Kalita, Avik Mukherjee, Santosh Kumar
Summary: This review provides comprehensive information on the extraction, composition, functional properties, and applications of carnauba wax in fruit and vegetable packaging and preservation. Carnauba wax coatings effectively extend the shelf life of fruits and vegetables by reducing water loss and respiration rate. Additionally, incorporating carnauba wax into biopolymer-based composite films improves moisture, gas, and light barrier properties.
TRENDS IN FOOD SCIENCE & TECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Santosh Kumar, Jyotismita Konwar, Manashi Das Purkayastha, Sweety Kalita, Avik Mukherjee, Joydeep Dutta
Summary: Food processing waste and by-products can be utilized for manufacturing high-value products, such as pectin extraction from citrus fruit peel and fruit pomace. Conventional extraction methods using acid, alkali, and chelating agents have been used extensively, but advanced extraction technologies like enzyme, microwave, and supercritical water extraction are preferred due to their energy efficiency and high-quality product. This review compares the efficiency, quality, and functionality of different extraction techniques.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Biochemistry & Molecular Biology
Dongkun Yu, Indra Bhusan Basumatary, Santosh Kumar, Fei Ye, Joydeep Dutta
Summary: Benzophenone-3 grafted chitosan (CS-BP-3) was synthesized and used as an antibacterial coating for the first time. The grafting mechanism, chemical structure, and thermal stability of CS-BP-3 were studied. The CS-BP-3 coating demonstrated UV blocking property, surface features, optical and thermal stability, and antibacterial activity against both Gram-negative and Gram-positive bacteria, making it potentially applicable in food packaging.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Review
Biochemistry & Molecular Biology
Santosh Kumar, Annapureddy Rama Linga Reddy, Indra Bhusan Basumatary, Anamika Nayak, Debjani Dutta, Jyotismita Konwar, Manashi Das Purkayastha, Avik Mukherjee
Summary: Perishable foods pose a challenge to food supply chains due to their short shelf-life and resulting postharvest losses. Pectin, a biopolymer derived from low-cost sources like agricultural or food processing wastes, has been extensively studied for its use in food packaging and preservation. This review provides a comprehensive account of pectin extraction, development of pectin-based films and coatings, their characterizations, and their applications in improving the shelf-life of perishable products.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Biochemistry & Molecular Biology
Indra Bhusan Basumatary, Avik Mukherjee, Santosh Kumar
Summary: Biopolymer-based food packaging films are gaining popularity as consumers demand sustainable alternatives and express concerns about synthetic plastic packaging. In this study, chitosan-based active antimicrobial films were created with the addition of eugenol nanoemulsion (EuNE), Aloe vera gel, and zinc oxide nanoparticles (ZnONPs). The films were characterized for solubility, microstructure, optical properties, antimicrobial, and antioxidant activities. The incorporation of EuNE improved the UV light barrier property of the films, while maintaining transparency. The addition of ZnONPs enhanced antibacterial properties and tensile strength, and the addition of EuNE and Aloe vera gel improved DPPH scavenging activities.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Agriculture, Multidisciplinary
Santosh Kumar, Namrata Singh, L. Susmita Devi, Shrawan Kumar, Madhu Kamle, Pradeep Kumar, Avik Mukherjee
Summary: Neem oil and its nanoemulsion have great potential in food preservation and packaging due to their excellent antimicrobial, antioxidant, pesticidal and insecticidal properties. They are more stable, efficient, and possess improved functionalities. Careful use of neem oil and its components is beneficial for human health and the environment.
JOURNAL OF AGRICULTURE AND FOOD RESEARCH
(2022)
Review
Nanoscience & Nanotechnology
Santosh Kumar, Fei Ye, Sergey Dobretsov, Joydeep Dutta
Summary: Biofouling poses significant challenges to the maritime industry, but recent developments in using nanomaterial-based anti-fouling coatings show promise in addressing these issues while remaining environmentally friendly. Hybrid nanocomposites of organic-inorganic materials offer a unique solution to preventing biofouling, and photocatalytic nanomaterials have shown potential for inhibiting marine fouling. Overall, advancements in polymer science and nanotechnology are contributing to the development of eco-friendly marine coatings that combat biofouling effectively.
FRONTIERS IN NANOTECHNOLOGY
(2021)
Correction
Food Science & Technology
Santosh Kumar
FOOD PACKAGING AND SHELF LIFE
(2021)
