{"refrec":{"BRefID":367643,"RR":"<b>Mohammadi, P.; Taghavi, E.; Foong, S.Y.; Rajaei, A.; Amiri, H.; de Tender, C.; Peng, W.; Lam, S.S.; Aghbashlo, M.; Rastegari, H.; Tabatabaei, M.</b> (2023). Comparison of shrimp waste-derived chitosan produced through conventional and microwave-assisted extraction processes: physicochemical properties and antibacterial activity assessment. <i>International Journal of Biological Macromolecules 242(Part 2)</i>: 124841. <a href=\"https://dx.doi.org/10.1016/j.ijbiomac.2023.124841\" target=\"_blank\">https://dx.doi.org/10.1016/j.ijbiomac.2023.124841</a>","BEntID":365368,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>International Journal of Biological Macromolecules 242(Part 2)</i>: 124841. <a href=\"https://dx.doi.org/10.1016/j.ijbiomac.2023.124841\" target=\"_blank\">https://dx.doi.org/10.1016/j.ijbiomac.2023.124841</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Mohammadi, P.; Taghavi, E.; Foong, S.Y.; Rajaei, A.; Amiri, H.; de Tender, C.; Peng, W.; Lam, S.S.; Aghbashlo, M.; Rastegari, H.; Tabatabaei, M.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Mohammadi, P. <i>et al.</i>","Englishabstract":"Depending on its physicochemical properties and antibacterial activities, chitosan can have a wide range of applications in food, pharmaceutical, medicine, cosmetics, agriculture, and aquaculture. In this experimental study, chitosan was extracted from shrimp waste through conventional extraction, microwave-assisted extraction, and conventional extraction under microwave process conditions. The effects of the heating source on the physicochemical properties and antibacterial activity were investigated. The results showed that the heating process parameters affected the physicochemical properties considerably. The conventional procedure yielded high molecular weight chitosan with a 12.7 % yield, while the microwave extraction procedure yielded a porous medium molecular weight chitosan at 11.8 %. The conventional extraction under microwave process conditions led to medium molecular weight chitosan with the lowest yield (10.8 %) and crystallinity index (79 %). Antibacterial assessment findings revealed that the chitosan extracted using the conventional method had the best antibacterial activity in the agar disk diffusion assay against <i>Listeria monocytogenes</i> (9.48 mm), <i>Escherichia coli</i>. (8.79 mm), and <i>Salmonella</i> Typhimurium (8.57 mm). While the chitosan obtained by microwave-assisted extraction possessed the highest activity against <i>E. coli</i>. (8.37 mm), and <i>Staphylococcus aureus</i> (8.05 mm), with comparable antibacterial activity against <i>S.</i> Typhimurium (7.34 mm) and <i>L. monocytogenes</i> (6.52 mm). Moreover, the minimal inhibitory concentration and minimal bactericidal concentration assays demonstrated that among the chitosan samples investigated, the conventionally-extracted chitosan, followed by the chitosan extracted by microwave, had the best antibacterial activity against the target bacteria.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Comparison of shrimp waste-derived chitosan produced through conventional and microwave-assisted extraction processes: physicochemical properties and antibacterial activity assessment","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2025-09-25 01:36:50.712317","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Shrimp waste valorization; Chitosan conventional extraction; Microwave-assisted technique; Physicochemical properties; Antibacterial activity; Circular economy","OtherDescriptors":null,"Notes":null,"AnaPub":2023,"MonPub":null,"DateUpdate":"2025-09-18","DateCreate":"2023-10-02","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:001014872900001","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/j.ijbiomac.2023.124841"},"refs":null,"anarec":{"AnaID":367643,"PubliDate":2023,"Pagination":"124841","XtraPublOfAnaID":null,"ISBN":null,"Volume":"242","Issue":"Part 2","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":270040,"SerRR":"International Journal of Biological Macromolecules. 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