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1、食品研究與并發(fā)2014年10月基礎(chǔ)研究FoodResearchAndDevelo第35卷第19期13DOI:10.3969/j.issn.1005—6521.2014.19.004甲殼素及其衍生物的制備與抑菌活性研究尹秀蓮-一。游慶紅-,周興海(1.淮陰工學(xué)院江蘇省生物質(zhì)轉(zhuǎn)化與過程集成工程實驗室,江蘇淮安223001;2.南京大學(xué)淮安高新技術(shù)研究院,江蘇淮安223001;3.江蘇省生物質(zhì)能與酶技術(shù)重點實驗室,江蘇淮安223300)摘要:對從龍蝦廢棄物制備的甲殼素、殼聚糖及其衍生物甲殼低聚糖、氨基葡萄糖鹽酸鹽對3種G_茵與3種G+菌的抗茵活性進(jìn)行了研究。MIC試驗結(jié)果表明
2、甲殼低聚糖、氨基葡萄糖鹽酸鹽對所有測試菌株的MIC均<0.01%,比甲殼素、殼聚糖表現(xiàn)出更高的抑茵活性。通過繪制生長曲線,對4種物質(zhì)的抑菌活性進(jìn)行研究,結(jié)果表明0.1%的殼聚糖能抑制64%的枯草芽孢桿茵和蠟樣芽孢桿菌,說明桿菌屬對殼聚糖比較敏感,甲殼低聚糖對G菌都表現(xiàn)出較強(qiáng)的抑菌作用,氨基葡萄糖鹽酸鹽能完全抑制金黃色葡萄球茵的生長。甲殼素和殼聚糖對p大腸桿菌、綠膿假單胞茵有一定的抑制作用,對沙門氏菌基本沒有抑制作用。0.1%的甲殼低聚糖與氨基葡萄糖鹽酸鹽對幾種p茵的抑制作用較強(qiáng)。甲殼素和殼聚糖可作為較有效的抑茵劑,甲殼低聚糖與氨基葡萄糖鹽酸鹽可作為幾種受試p茵的殺菌劑。
3、關(guān)鍵詞:甲殼素;殼聚糖;甲殼低聚糖;氨基葡萄糖鹽酸鹽;抑茵PreparationandAntibacterialActivityofChitinandItsDerivativesYINXiu—lian,_.YOUQing—hong'。。ZHOUXing-hai(1.JiangsuProvincialEngineeringLaboratoryforBiomassConversionandProcessIntegration;HuaiyinInstituteofTechnology,Huaian223001,Jiangsu,China;2.HuaianHigh—TechRe
4、searchInstituteofNanjingUniversity,Huaian223001,Jiangsu,China;3.JiangsuKeyLaboratoryforBiomass—basedEnergyandEnzymeTechnology,Huaian223300,Jiangsu,China)Abstract:Theantimicrobialactivitiesofchitin,chitosanisolatedfromshrimpshellwasteandtheirderivatechito一0ligosaccharides,glucosaminehydro
5、chloridagainstthreeGram—positiveandthreeGram—negativebacteriawerestudied.ResultsofMICexperimentsshowedthattheMICofchito—oligosaccharidesandglucosaminehydrochloridwereall<0.01%.theirantimicrobialactivitieswerehigherthanthatofchitinandchitosan.Throughgrowthcuuce.theantimicrobialactivitiesw
6、erestudied.Resultsshowedthatchitosanof0.1%couldinhibit64%BacillussubtilisandBacilluscereus,whichdemonstratedthatBacillusaremoresensitivetochitosan.Chito-oligosaccharidesshowedstrongantimicrobialactivitiestoallGram-positivebacteria.GucosaminehydrochloridcouldinhibitthegrowthofStaphylococc
7、usaureuscompletely.ChitinandchitosanshowedsomeinhibitactivityonGram—negativebacteriaEscherichiacoliandPseudomonasaeruginosa,buthavenoeffectonSalmonellatyphi.chito—oligosaccharidesandglucosaminehydrochloridof0.1%hadstronginhibiteffectonallthreeGram—negativebacteria.Chitina