{"title":"Pickering emulsions: Microgels as alternative surfactants","authors":"","doi":"10.1016/j.cocis.2024.101827","DOIUrl":"10.1016/j.cocis.2024.101827","url":null,"abstract":"<div><p>Microgels stand out as compelling alternatives to traditional emulsifiers in Pickering emulsions, owing to their unique deformability and responsiveness, distinguishing them from rigid particles and conventional surfactants. In this review, we provide an overview of recent advancements and breakthroughs in microgel synthesis and the stabilization of Pickering emulsions using microgels. Additionally, we discuss the underlying stabilization mechanisms of microgel-stabilized emulsions, elucidating the influencing factors such as microgel properties, environmental conditions, and interfacial structures that significantly impact emulsion stability. Given these recent achievements, we summarize and highlight the promising applications associated with diverse Pickering emulsion systems stabilized by tailored microgels, including interfacial catalysis, functional foods, vaccine adjuvants, stimuli-responsive colloidosomes, and droplet manipulation. Conclusively, we identify the existing research gaps in microgel studies and propose future directions, emphasizing the need for the rational design of microgels, comprehensive mechanism studies of microgel-stabilized emulsions, and the formation of next-generation Pickering emulsions.</p></div>","PeriodicalId":293,"journal":{"name":"Current Opinion in Colloid & Interface Science","volume":"73 ","pages":"Article 101827"},"PeriodicalIF":7.9,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141575587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The role of bubbles and interfaces in the quality of foamed cereal products","authors":"Martin G. Scanlon, Filiz Koksel","doi":"10.1016/j.cocis.2024.101843","DOIUrl":"10.1016/j.cocis.2024.101843","url":null,"abstract":"<div><p>Foamed cereal foods are a significant part of our daily diet. Colloidal and interfacial science principles provide insights on how to devise novel aerated cereal foods that may also address environmental and human health needs in our diets and for optimizing the sensory and nutritional quality of foamed cereal products. We review recent literature where colloidal science principles have been employed to understand relations between the creation of bubbles in food materials, bubble growth and interactions, and how this history governs the microstructure and the mechanical properties of foamed cereal products that are critical to the appearance and quality of a range of food products such as bread, cakes, snack foods, and breakfast cereals. Product density and its frequently measured corresponding quality equivalent, specific volume, are key considerations of both the visual appeal and the eating quality of foamed cereal products.</p></div>","PeriodicalId":293,"journal":{"name":"Current Opinion in Colloid & Interface Science","volume":"73 ","pages":"Article 101843"},"PeriodicalIF":7.9,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141843438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Gelation of polymer solutions as a rheological phenomenon (mechanisms and kinetics)","authors":"Alexander Ya. Malkin , Svetlana R. Derkach","doi":"10.1016/j.cocis.2024.101844","DOIUrl":"10.1016/j.cocis.2024.101844","url":null,"abstract":"<div><p>The phase equilibrium shift caused by changes in polymer-liquid compatibility under the influence of external or internal factors is discussed as the main mechanism of gel formation. Wherein, it is assumed that the gel is a solid, non-flowing soft substance formed due to incomplete phase decomposition of a solution. The sol-gel transition occurs through the intermediate stage of the formation of a viscoelastic yielding medium. The liquid-yielding medium-gel transition results in fundamental changes in the rheological properties of the substance. Therefore, the study of the kinetics of the evolution of rheological properties at various stages of gelation is an important tool for understanding this phenomenon. The review contains a discussion of recent publications and the formulation of some challenging problems.</p></div>","PeriodicalId":293,"journal":{"name":"Current Opinion in Colloid & Interface Science","volume":"73 ","pages":"Article 101844"},"PeriodicalIF":7.9,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141992917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Dynamic interfacial effects investigated by microfluidics: Formation and stability of droplets and bubbles","authors":"Boxin Deng, Karin Schroën","doi":"10.1016/j.cocis.2024.101826","DOIUrl":"10.1016/j.cocis.2024.101826","url":null,"abstract":"<div><p>Microfluidic techniques have emerged as powerful tools to unveil dynamic processes occurring during foam and emulsion production, and instabilities during their lifetime (coalescence and digestion), and to gain detailed insights in interfacial effects at (sub)millisecond time scales, including but not limited to, interfacial adsorption (i.e. dynamic interfacial/surface tension) and interfacial rheology. These insights are pivotal in connecting the interfacial effects to dynamic processes as they would occur during emulsion/foam production. We highlight the importance of conducting research at relevant time scales.</p></div>","PeriodicalId":293,"journal":{"name":"Current Opinion in Colloid & Interface Science","volume":"73 ","pages":"Article 101826"},"PeriodicalIF":7.9,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S135902942400044X/pdfft?md5=d36d8f665b23e5a9699ddcf97ea89d3b&pid=1-s2.0-S135902942400044X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141575589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Applications of artificial intelligence and machine learning on critical materials used in cosmetics and personal care formulation design","authors":"Hai Xin, Akashdeep Singh Virk , Sabitoj Singh Virk , Foluso Akin-Ige , Samiul Amin","doi":"10.1016/j.cocis.2024.101847","DOIUrl":"10.1016/j.cocis.2024.101847","url":null,"abstract":"<div><p>The applications of artificial intelligence (AI) and machine learning (ML) approaches are rising in formula optimization, ingredient selection, performance prediction, and structure-properties analysis in formulated product development for the cosmetic industry. The present review aims to give a critical discussion regarding how AI and ML assist in the development of key component materials used in cosmetics and formulated products including surfactants, polymers, fragrances, preservatives, and hydrogels. Hydrogels are reviewed here as a promising candidate to open a new frontier for the future cosmetics and personal care product industry, due to their excellent biocompatibility, excellent drug-delivering ability, and high water content. We also discuss the use of ML for formula optimization and hazardous ingredient detection such as sensitizing and allergic components. All the research publications reviewed in the present work are accomplished in the past 4 years to reflect the current research trends and progress in ML-assisted advancement in cosmetics and personal care product development.</p></div>","PeriodicalId":293,"journal":{"name":"Current Opinion in Colloid & Interface Science","volume":"73 ","pages":"Article 101847"},"PeriodicalIF":7.9,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142021469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Foams based on biosurfactant mixtures. Part II. Influence of mixture composition on foam stability","authors":"Marcel Krzan , Sonia Kudłacik-Kramarczyk , Anna Drabczyk , Weronika Kieres","doi":"10.1016/j.cocis.2024.101825","DOIUrl":"10.1016/j.cocis.2024.101825","url":null,"abstract":"<div><p>This paper reviews the literature on various biosurfactant mixtures used to obtain foams. The interactions between different biosurfactants, biosurfactants, and synthetic surfactants, biosurfactants' interactions with various additives (as non-surface-active macromolecules or particles), and the impact of pH and ionic strength variations on adsorption processes, foamability, foam stability, and rheology are discussed. Biosurfactants are natural and synthetic compounds that can facilitate the process of foam formation and stabilisation; they are an alternative to classical surfactants. Research on such materials will allow the development of innovative foaming technologies that minimise the negative environmental effects of foaming compounds without losing the properties of the final product.</p></div>","PeriodicalId":293,"journal":{"name":"Current Opinion in Colloid & Interface Science","volume":"73 ","pages":"Article 101825"},"PeriodicalIF":7.9,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141575588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mingrui Liao , Chunxian Wu , Kangcheng Shen , Xuzhi Hu , Jian R. Lu
{"title":"Combinatorial therapies of surfactant-like antimicrobial peptides and antibiotics for improved therapeutic efficacy","authors":"Mingrui Liao , Chunxian Wu , Kangcheng Shen , Xuzhi Hu , Jian R. Lu","doi":"10.1016/j.cocis.2024.101829","DOIUrl":"10.1016/j.cocis.2024.101829","url":null,"abstract":"<div><p>Multidrug combination therapies have been proven to be advantageous in combating the proliferation of antibiotic-resistant bacterial pathogens in recent years, not only contributing to the medical/therapeutic landscape but also offering insights into microbial ecology and evolution. Because antimicrobial surfactant-like peptides kill bacteria/fungi via disrupting the membranes, it is less likely for the microorganisms to develop resistance. Associations of two or more drugs with at least one of them to be an antimicrobial peptide have contributed to the treatment of difficult-to-treat infectious diseases caused by pathogens in numerous <em>in vitro</em> studies. The synergistic action of cationic antimicrobial peptide or surfactant-like molecule with a current antibiotic can bring an effective measure to overcome antimicrobial resistance. Through reviewing recent advances in combinatorial therapies, we show that synergy between different agent types could be a fundamental defense strategy to find against multidrug resistance. Peptide combinations and conjugations with themselves or other molecules could effectively avoid the disadvantages of individual compounds, enhancing antibacterial activity, delivery efficiency and selectivity whilst introducing new functionalities. Combined therapies among peptide amphiphiles, antibiotics and non-antibiotics may provide a practical avenue for an effective management of antibiotic-resistant superbugs and biofilms.</p></div>","PeriodicalId":293,"journal":{"name":"Current Opinion in Colloid & Interface Science","volume":"73 ","pages":"Article 101829"},"PeriodicalIF":7.9,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141708831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Haifeng Sun , Xiao Fu , Chaojuan Yang , Chengqian Yuan , Xuehai Yan
{"title":"Self-assembled amphiphilic peptide hydrogels for antimicrobial application","authors":"Haifeng Sun , Xiao Fu , Chaojuan Yang , Chengqian Yuan , Xuehai Yan","doi":"10.1016/j.cocis.2024.101828","DOIUrl":"10.1016/j.cocis.2024.101828","url":null,"abstract":"<div><p>Due to the widespread and excessive use of antibiotics, bacterial resistance has become an increasingly serious problem affecting public health. Amphiphilic peptide hydrogels have good biological and mechanical properties, and can be used as ideal substitutes for antibiotics in the fields of infection control and wound healing. This review systematically summarized the design principles, assembly mechanism, and the latest progress of amphiphilic peptide hydrogels. Based on the molecular structure and function of peptides, the antibacterial mechanism of amphiphilic peptide hydrogels is further elaborated. Finally, we provide a perspective for the future development of antibacterial applications of amphiphilic peptide hydrogels. It is hoped that this review can provide inspiration for the design of amphiphilic peptide hydrogels and promote their clinical transformation against bacterial infections.</p></div>","PeriodicalId":293,"journal":{"name":"Current Opinion in Colloid & Interface Science","volume":"73 ","pages":"Article 101828"},"PeriodicalIF":7.9,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141692729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhichen Xiong , Lili Zhou , Jie Wang , Maozhang Tian , Yaxun Fan , Yilin Wang
{"title":"Chiral surfactants: Design, aggregation behaviors and applications","authors":"Zhichen Xiong , Lili Zhou , Jie Wang , Maozhang Tian , Yaxun Fan , Yilin Wang","doi":"10.1016/j.cocis.2024.101842","DOIUrl":"10.1016/j.cocis.2024.101842","url":null,"abstract":"<div><p>Chiral surfactants represent a class of amphiphilic compounds characterized by hydrophilic headgroups and hydrophobic tails, coupled with one or several chiral centers within their molecular structures. Beyond possessing typical surfactant properties, they exhibit inherent asymmetry. Their aggregation behaviors and self-assembled structures can be effectively modulated by substituting chiral groups or introducing functional groups at the chiral center. Numerous endeavors have been undertaken to craft chiral surfactants with sophisticated physicochemical properties and burgeoning applications. This review delves into the aggregation behaviors of chiral surfactants sourced from various origins and possessing different molecular structures, with a focus on key parameters including headgroup, spacer and counterion. Moreover, applications of these multifunctional chiral surfactants are summarized across several active domains, including chiral recognition, enantiomer separation, asymmetric catalysis and the synthesis of chiral nanomaterials. Finally, it outlines perspectives and future challenges associated with chiral surfactants, highlighting avenues for further exploration and advancement in this field.</p></div>","PeriodicalId":293,"journal":{"name":"Current Opinion in Colloid & Interface Science","volume":"73 ","pages":"Article 101842"},"PeriodicalIF":7.9,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141772827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ida Svanedal, Alireza Eivazi, Magnus Norgren, Håkan Edlund
{"title":"Exploring the versatility of chelating surfactants: A review","authors":"Ida Svanedal, Alireza Eivazi, Magnus Norgren, Håkan Edlund","doi":"10.1016/j.cocis.2024.101833","DOIUrl":"10.1016/j.cocis.2024.101833","url":null,"abstract":"<div><p>Chelating surfactants are amphiphilic molecules capable of forming coordination complexes with metal ions and self-assembling into organized structures. These compounds have gained significant attention in recent years due to their multifaceted applications in environmental remediation, industrial processes, and material sciences. This review provides an overview of the characterization techniques and recent advancements in the applications of chelating surfactants over the past few years. The review begins by elucidating the characterization methods employed to understand the physicochemical properties of chelating surfactants and gain insight into their complex behavior and interactions in various systems. The applications of chelating surfactants in remediation of wastewater and soil, flotation of minerals, oil recovery processes, and corrosion inhibition in metallic structures are explored. Through examination of recent fundamental research activities, innovative approaches, mechanisms of action, and advancements in the different application domains are highlighted. Lastly, some recent progress in the related field of metallosurfactants is explored, even though not all metallosurfactants are chelating.</p></div>","PeriodicalId":293,"journal":{"name":"Current Opinion in Colloid & Interface Science","volume":"73 ","pages":"Article 101833"},"PeriodicalIF":7.9,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1359029424000517/pdfft?md5=2b5ae063a88338d87892d14ec6005999&pid=1-s2.0-S1359029424000517-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141691798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}