Antifouling and antibacterial behaviors of capsaicin-based pH responsive smart coatings in marine environments

Publication date: March 2020Source: Materials Science and Engineering: C, Volume 108Author(s): Xiangping Hao, Shougang Chen, Dong Qin, Mutian Zhang, Wen Li, Jincheng Fan, Chao Wang, Mengyao Dong, Jiaoxia Zhang, Frank Cheng, Zhanhu GuoAbstractAntifouling biocides releasing restricts the longevity of antifouling coatings. Compared with the anchoring state, the releasing behavior of agents is much faster on the voyage, while the biofouling process is tougher. In this work, a series of capsaicin-based pH-triggered polyethylene glycol/capsaicin@chitosan (PEG/CAP@CS), polyvinyl alcohol (PVA)/CAP@CS and alginate (ALG)/CAP@CS multilayer films are prepared with controlling antimicrobial properties in marine environments. There are 23.70, 23.35 and 22.06 ppb CAP releasing from (PVA/CAP@CS)20, (PEG/CAP@CS)20 and (ALG/CAP@CS)20 films after immersing in pH 4 solutions for 60 days, while only 13.07, 12.95 and 11.55 ppb CAP have been found in alkaline solutions after immersing for the same time, respectively. All these three types of films exhibit extraordinary pH responsive properties. They can control the CAP release at a low level in alkaline solutions, and make the CAP release fast in acid solutions. Moreover, the antibacterial properties against P.aeruginosa are outstanding about 95.84%, 95.0% and 96.91% for (PVA/CAP@CS)20, (PEG/CAP@CS)20 and (ALG/CAP@CS)20 films, respectively. The bacteriostasis of (ALG/CAP@CS)20 film keeps 92.73% after 60 days in alkaline solution, which means it...
Source: Materials Science and Engineering: C - Category: Materials Science Source Type: research

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Authors: Yildirim M, Kaplan M, Duzenli T, Tanoglu A, Kucukodaci Z, Onal Tastan Y, Cakir Guney B, Serindag Z Abstract Background: To investigate the protective efficacy of pentoxifylline through biochemical parameters and histopathological scores in a caerulein- and alcohol-induced experimental model of chronic pancreatitis in rats.Methods: A model of chronic pancreatitis with caerulein and alcohol was created in female rats of the genus Sprague Dawley. Pentoxifylline was administered in doses of 25 mg/kg (low dose) and 50 mg/kg (high dose) as a protective agent. Each group contained 8 animals. The gro...
Source: Scandinavian Journal of Gastroenterology - Category: Gastroenterology Tags: Scand J Gastroenterol Source Type: research
Publication date: Available online 16 January 2020Source: Journal of Food EngineeringAuthor(s): Luís Marangoni Júnior, Léa Mariza de Oliveira, Paula Fernanda Janetti Bócoli, Marcelo Cristianini, Marisa Padula, Carlos Alberto Rodrigues AnjosAbstractThe effect of high-pressure processing on the morphological surface, thermal and mechanical properties of three PA and EVOH based multilayer flexible packaging materials were evaluated. LDPE/PA/LDPE, LDPE/EVOH/LDPE and PET/LDPE/PA/EVOH/PA/LDPE packaging samples were processed under three different conditions (600 MPa/25 °C/10 min, 600 MPa/90 °C...
Source: Journal of Food Engineering - Category: Food Science Source Type: research
Most people know about the damaging effects that binge drinking can bring to someone’s life. Loss of enjoyment of life, losing family relationships, financial and career struggles, homelessness, and legal consequences are just the tip of the iceberg. However, it can be more difficult to realize the long-term effect of binge drinking on the body, because you cannot always see it. Frequent binge drinking poses many dangerous health risks, and many of them can lead to death. Facts on Long-Term Effect of Binge Drinking on the Body For men, binge drinking is defined as consuming five or more drinks within about two hour...
Source: Cliffside Malibu - Category: Addiction Authors: Tags: Alcohol Alcohol Rehab Information Alcoholism alcohol abuse alcohol dependence alcohol treatment alcohol treatment center binge binge drinking Source Type: blogs
With all the advances in modern medicine, it can be easy to wonder if there is a medication to stop drinking. Unfortunately, getting sober from alcohol isn’t as easy as simply taking medication. In addition to medication, therapy is required for the best long-term results, as well as support from loved ones and ongoing aftercare. However, there are some medications to help along in the process to stop withdrawal symptoms, block cravings, and create an aversion to alcohol. It is important to not rely only on medication to stop drinking. A commitment to behavioral therapy, holistic therapy, family involvement, self-ca...
Source: Cliffside Malibu - Category: Addiction Authors: Tags: Alcohol Alcohol Rehab Information Alcoholism Detox Resources for Alcohol and Drugs/Opiates alcohol abuse alcohol dependence alcohol detox alcohol treatment alcohol treatment center alcohol treatment facility Source Type: blogs
Alcohol is a toxic substance that can wreak havoc on the body, brain, central nervous system, internal organs, behavior patterns, emotions, and more. Long-term alcohol abuse can lead to serious damage to the body which, in some cases, can be irreversible and lead to certain chronic conditions. Detoxing from alcohol can present its own set of dangerous withdrawal symptoms and, as such, it is important to know what you need when you are ready to safely detoxify alcohol from your system. Preparation to Detoxify Alcohol When you’re ready to detoxify alcohol from your system, it is important that you and your loved ones ...
Source: Cliffside Malibu - Category: Addiction Authors: Tags: Alcohol Alcohol Rehab Information Alcoholism Detox Resources for Alcohol and Drugs/Opiates alcohol abuse alcohol dependence alcohol detox alcohol treatment alcohol treatment center alcohol treatment facility alcohol use Source Type: blogs
This study provides a strategy to design a non-polluting, biodegradable, biocompatible film with excellent mechanical properties that can be used in UV-visible barriers and has potential applications in thermal insulating materials for food preservation.Graphical abstract
Source: Carbohydrate Polymers - Category: Biomedical Science Source Type: research
Publication date: Available online 16 January 2020Source: Process BiochemistryAuthor(s): Karen Rodríguez, Claudia BernalAbstractBacillus subtilis lipase A (BSLA) has been extensively studied through protein engineering; however, its immobilization and behavior as an insoluble biocatalyst have not been extensively explored. In this work, for the first time, a direct immobilization of recombinant BSLA from microbial culture supernatant was reported, using chemically modified porous with different electrostatic, hydrophobic, hydrophilic, and hydrophilic−hydrophobic enzyme-support interactions. The resulting bioca...
Source: Process Biochemistry - Category: Biochemistry Source Type: research
Chem. Commun., 2020, Accepted Manuscript DOI: 10.1039/C9CC09449K, CommunicationChenxi Wang, Yuan Liu, Chunyan Bao, Yuan Xue, Yaowu Zhou, Dasheng Zhang, Qiuning Lin, Linyong Zhu Here we report the use of 2-nitrobenzyl alcohol (NB) as a photoreactive group with amine selectivity and explore its applications for photoaffinity labeling and crosslinking of biomolecules. This work confirms... The content of this RSS Feed (c) The Royal Society of Chemistry
Source: RSC - Chem. Commun. latest articles - Category: Chemistry Authors: Source Type: research
CONCLUSION: The incidence of colorectal cancer has been increasing in Korea. Colonoscopy screening was a protective factor for colorectal cancer, and active use of colonoscopy may reduce incidence. Early diagnosis and care are important, particularly for the high-risk group. PMID: 31937075 [PubMed]
Source: Annals of Coloproctology - Category: Gastroenterology Tags: Ann Coloproctol Source Type: research
Alcohol abuse and alcohol dependence are key factors in the development of alcohol use disorder, which is a pervasive societal problem with substantial economic, medical, and psychiatric consequences. Although our understanding of the neurocircuitry that u...
Source: SafetyLit - Category: International Medicine & Public Health Tags: Alcohol and Other Drugs Source Type: news
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