Article
Chemistry, Organic
Diana Gimenez, Aoife Phelan, Cormac D. Murphy, Steven L. Cobb
Summary: The synthesis of fengycin A analogues with enhanced antifungal properties and chemical stability under acidic and basic conditions is reported. The analogues show that the fengycin core structure can be modified and simplified without loss of antifungal activity.
Review
Food Science & Technology
Bo Zhang, Linlin Xu, Jinlin Ding, Mengze Wang, Rui Ge, Hongfei Zhao, Bolin Zhang, Junfeng Fan
Summary: This article reviews the potential and application of lipopeptides (LPs) formed by Bacillus spp. in food preservation. LPs have broad-spectrum antimicrobial activities and can effectively inhibit microbial spoilage of food, playing an important role in preserving the quality of vegetables, fruits, drinks, and aquatic products. In addition, the yield of LPs can be enhanced by gene regulation and the optimization of fermentation parameters, and nano-encapsulation of LPs holds promise for improving the preservation of food.
TRENDS IN FOOD SCIENCE & TECHNOLOGY
(2022)
Article
Plant Sciences
Shehzad Mehmood, Muhammad Atif Muneer, Muhammad Tahir, Muhammad Tariq Javed, Tariq Mahmood, Muhammad Siddique Afridi, Najeeba Paree Pakar, Hina Ali Abbasi, Muhammad Farooq Hussain Munis, Hassan Javed Chaudhary
Summary: The study isolated a multi-stress-tolerant rhizobacterial strain Bacillus subtilis PM32 from field-grown potato, which exhibited various plant growth promoting traits and significant tolerance towards salt, heavy metal, heat and drought stress. The strain demonstrated potential for lipopeptides production and ACC deaminase enzyme activity, and showed efficiency as a bio-control agent for Rhizoctonia solani infection while enhancing the growth of potato plants.
PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS
(2021)
Article
Chemistry, Applied
Li Wang, Govindasami Periyasami, Ali Aldalbahi, Vincenzo Fogliano
Summary: The study compared the effects of chitosan and PVA-based BSNPs films on the growth of Pseudomonas fluorescens, showing that PVA-based BSNPs film exhibited stronger antimicrobial effects. This is attributed to the higher amount of silver ions released from the PVA film into the hydrogel.
Article
Biotechnology & Applied Microbiology
Danielle Santos-Lima, Cristina de Castro Spadari, Vinicius de Morais Barroso, Juliana C. S. Carvalho, Larissa Costa de Almeida, Felipe Santiago Chambergo Alcalde, Marcelo Jose Pena Ferreira, Miriam Sannomiya, Kelly Ishida
Summary: This study isolated and identified a lipopeptide-producing bacterium from a bacterial strain, which showed significant antifungal effects and potential for pharmaceutical development. The lipopeptides exhibited excellent performance in inhibiting fungal growth, disrupting fungal biofilms, and inducing morphological changes, making them promising antifungal agents.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2023)
Review
Biochemistry & Molecular Biology
Mohammad Mesgari, Amir Hossein Aalami, Amirhossein Sahebkar
Summary: Packaging plays a vital role in preserving the properties of food and preventing food spoilage caused by microorganisms. Combining chitosan and metallic nanoparticles can be a practical approach in antimicrobial packaging systems, offering benefits such as thermal stability and extended shelf life of food products.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Food Science & Technology
Pavel Pleva, Lucie Bartosova, Daniela Macalova, Ludmila Zalesakova, Jana Sedlarikova, Magda Janalikova
Summary: This study evaluated the biofilm formation on different polymer films and investigated the effect of antimicrobial compounds on biofilm formation. The results showed that certain polymer films had high biofilm formation ability, and the addition of antimicrobial compounds effectively reduced biofilm formation. Therefore, these films can be used to develop novel active food packaging to prevent biofilm formation and enhance food quality and safety.
Article
Polymer Science
Sreelekha Ediyilyam, Bini George, Sarojini Sharath Shankar, Thomas Thuruthiyil Dennis, Stanislaw Waclawek, Miroslav Cernik, Vinod V. T. Padil
Summary: The food packaging industry is exploring economically viable, environmentally benign, and non-toxic packaging materials, with biopolymers considered a leading replacement for plastic packaging. The addition of silver nanoparticles to polymer blends enhances their physicochemical and biological functioning while reducing swelling degree and water vapor transmission rate.
Article
Biotechnology & Applied Microbiology
Mathieu Bouchard-Rochette, Younes Machrafi, Louis Cossus, Thi Thuy An Nguyen, Hani Antoun, Arnaud Droit, Russell J. Tweddell
Summary: Bacillus pumilus strain PTB180 and Bacillus subtilis strain PTB185 secrete lipopetides that have strong antagonistic activity against several plant pathogens, including Botrytis cinerea. These strains inhibit the mycelial growth and conidial germination of B. cinerea and can survive on tomato phyllosphere for at least 21 days. Foliar applications of these strains significantly reduce the incidence and severity of gray mold on tomato plants.
BIOLOGICAL CONTROL
(2022)
Article
Immunology
Meiling Chen, Nengfeng Lin, Xiande Liu, Xin Tang, Zhiyong Wang, Dongling Zhang
Summary: In this study, a novel antimicrobial peptide Lc1687 was screened and found to exhibit strong activities against both Gram-positive and Gram-negative bacteria. It was derived from the C-terminal of a Ferritin heavy subunit and showed stability and potential for clinical medicine development.
FRONTIERS IN IMMUNOLOGY
(2023)
Review
Food Science & Technology
Yifan Cheng, Xiaojing Ma, Trevor Franklin, Rong Yang, Carmen Moraru
Summary: In this review, the authors discuss the ability of Mechano-bactericidal (MB) nanopatterns to inactivate bacterial cells by rupturing cellular envelopes. These biocide-free, physicomechanical mechanisms have the potential to mitigate biofilms on various materials in food processing, packaging, and food preparation environments. The review also highlights recent progress in understanding MB mechanisms, property-activity relationships, and the development of cost-effective nanofabrication technologies. The potential challenges and research needs for the adoption of MB surfaces in the food industry are also evaluated.
ANNUAL REVIEW OF FOOD SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Applied
Jinglin Ding, Shufan Zeng, Yueqing Wang, Xiaoyu Yin, Bo Zhang, Bolin Zhang, Shandong Xu, Yanyan Zhang, Jiangfu Zheng, Junfeng Fan, Mengze Wang
Summary: This study developed a green hydrothermally-chelating approach to generate robust antimicrobial complexes via metal-coordinated supramolecular self-assembly of cyclic lipopeptides (CLs). The Ca/CL and Zn/CL complexes showed potent antibacterial activity against fungi (A. niger) and bacteria (E. coli and S. aureus), and effectively prevented microbial resistance. This coordination approach led to CL with enhanced hydrophobic and intermolecular electrostatic interactions, forming secondary structures that allowed the complexes to easily interact with and destroy the membrane of microorganisms.
Article
Biochemical Research Methods
Jiawen Wang, Yuan Ping, Wei Liu, Xin He, Chunmei Du
Summary: In this study, three genetically engineered strains were constructed to improve the lipopeptide production of Bacillus subtilis HNDF2-3. Real-time PCR revealed that the transcriptional levels of the sfp gene in F2-3sfp, F2-3comA, and F2-3sfp-comA were significantly increased compared to the original strain. ELISA results showed that F2-3comA exhibited the highest malonyl-CoA transacylase activity, leading to a 32.74% increase in production compared to the original strain. Additionally, HPLC analysis demonstrated that F2-3sfp-comA had the highest iturin A production, which was 63.16% higher than the original strain. This study provides a foundation for the development of genetically engineered strains with high lipopeptide production.
PREPARATIVE BIOCHEMISTRY & BIOTECHNOLOGY
(2023)
Article
Food Science & Technology
Mayra C. Garcia-Anaya, David R. Sepulveda, Claudio Rios-Velasco, Carlos H. Acosta-Muniz
Summary: In this study, the authors investigated the use of A511 bacteriophage in a WPI-based coating to control Listeria monocytogenes in cheese. They found that the bacteriophage remained stable in the coating for 16 days, but its application on cheese resulted in a reduction in bacterial counts. The coating also had an effect on the color, hardness, and springiness of the cheese. Overall, the results suggest that the A511 bacteriophage-WPI coating is a promising tool for L. monocytogenes control in cheese.
FOOD PACKAGING AND SHELF LIFE
(2023)
Article
Microbiology
Jiawen Xiao, Xiaojun Guo, Xinlei Qiao, Xuechao Zhang, Xiaomeng Chen, Dongdong Zhang
Summary: This study demonstrated that fengycin and iturin A purified from Bacillus subtilis Z-14 showed strong antifungal effects against Gaeumannomyces graminis var. tritici (Ggt), the pathogen causing wheat take-all disease. In biocontrol tests, both fengycin and iturin A effectively controlled the disease, with fengycin treatment significantly affecting soil bacterial diversity after 7 days. Additionally, the two compounds led to changes in the relative abundance of other fungal genera in the soil.
FRONTIERS IN MICROBIOLOGY
(2021)