最新益生菌的微胶囊化幻灯片.ppt

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1、益生菌的微胶囊化2143DefinitionWhatareprobiotics？FunctionHowdotheywork？TechnologyHowtomakemicroencapsulationofprobiotics？FutureWhatisthefuturetrendsofthistechniques？Definition1Whatareprobiotics？Howdotheywork？Technology1Howtomakemicroencapsulationofprobiotics？Microencapsulationofprobiotics

2、MicroencapsulationTheEmbeddingOfProbiotics（益生菌的包埋）TheDryingOfTheSolution（包埋溶液的干燥）Extrusion/Emulsion（挤压法）（乳化法）Spraydrying/Coldfreezedrying/Fluidizedbeddrying（喷雾干燥）（冷冻干燥）（流化床干燥）MicroencapsulationofprobioticsMicroencapsulationTheEmbeddingOfProbiotics（益生菌的包埋）Extrusion/Emulsion（挤压法）（乳

3、化法）Chitosanascoating（壳聚糖作为涂层）Xanthangum（黄原胶）Proteinlikecasein（酪蛋白）Encapsulationinalginate壁材通常选用海藻酸钠Alginategelsuponcontactwithdivalentmetals(e.g.calcium,cadmiumorzinc[56]),formingwhathasbeendescribedasan“eggboxstructure”betweenfourGresidues藻酸盐凝胶与二价金属接触(如钙、镉或锌[56])，形成“鸡蛋盒结构”Microe

4、ncapsulationofprobioticsExtrusionThisinvolvesthedroppingofaconcentratedalginatesolution,mostcommonlythroughaneedle（通过针滴入）,intocalciumchloridesolution（氯化钙溶液）externallygelling（凝胶化）thepolymerintoamicrocapsule.MicroencapsulationofprobioticsEmulsionThemicrocapsulesareformedbytheformat

5、ionofawater-in-oilemulsion,usuallystabilisedbysurfactants（表面活性剂）suchasTween80,withthealginatebeingdissolvedinthewaterphase.（外源乳化法：先乳化，再加入交联剂凝胶化）Anorganicacidisaddedtothisemulsion,andasitpenetratesintothediscretewaterphaseitreactswiththecalciumcarbonateformingcalciumionsandcarboni

6、cacid,resultinginthegelationofthealginate.（内源乳化法：乳化之前加入交联剂）MicroencapsulationofprobioticsMicroencapsulationTheDryingOfTheSolution（包埋溶液的干燥）Spraydrying/Coldfreezedrying/Fluidizedbeddrying（喷雾干燥）（冷冻干燥）（流化床干燥）Thespraydryingofmicrocapsulesgivebetterprotectiontoprobioticscomparedwithcol

7、dfreezedryingandfluidizedbeddrying.Future1Whatisthefuturetrendsofthistechnology?TheFutureTrendsFoodMedicineFeedAdjusttheintestinalmicroecologicalbalance.维持肠道生态平衡Adjusttheintestinalfloradisorderscausedbymisuseofantibiotics（抗生素）调节动物因滥用抗生素引起的肠道菌群失调Yogurt,cheese,diaryproducts1.Reduce

8、waterlossrate2.Improvethesurvivalrateofp