资源描述：
《橘皮果胶的提取及精制工艺研究》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。
1、超滤浓缩、纯化的最佳工艺为：使用截留分子量为30KDa的陶瓷膜，跨膜压力为0.16MPa,最适温度为35°C。喷雾干燥的最佳工艺为：果胶浓度为15%,进风温度为220°C,进样速度为3L/ho采用精制工艺一和工艺二，果胶精制收率分别为84.9%和91.7%,所得果胶各项质量指标均达到或优于国家标准，不同批次间质量差异小于5%,可稳定地获得高品质果胶。关键词：果胶联合提取生物提取精制工艺质量控制AbstractResourceofthepeeloforangeinChinaisrich,which
2、isnotmadegooduseendingupwithenvironmentalpollutant.Thus,tousethishugeamountofresourceofpeeltoproducewidelyusedandhighlydemandedpectinholdsgreateconomicandsocialinterests.Thispaperestablishedjointandbiologicalproceduresofpectinextractionfromthepeelofo
3、range,andsystematicallystudiedtherefiningprocessofpectin,withefficientextraction,cleanproductionandqualitycontrolofpectinachievedattheend.Themainresultsobtainedinthispaperareasfollows:(1)Ajointextractionofpectinwasdeveloped.Namely,therawmaterialwaspr
4、etreatedwithasteamexplosion,whichwasthenextractedwithhydrochloricacidandcarbonicacidataratioof1:2.Theextractionyieldofpectinreachesashighas83.6%whentheextractiontimeis2.5h,theextractiontemperatureis80°C?extractionagentpHis2.1，andsolid-liquidratiois1:
5、30.Undertheabovecondition,degreeofesterificationoftheresultingpectinis56%,whichisbeneficialtopreparelowmethoxylpectin.Besides,theCODandBODoftheextractionwastewateraredecreasedmorethan55%and30%,respectively,whichisveryfavorabletobeappliedinpracticalpr
6、oduction.(2)BiologicalextractionwasstudiedandtheAspergillusficuumRBB-10wasdeterminedasthesuitablestrain.Theoptimalconditionforbiologicalextractionprocesswasdetermined.Namely,theextractiontimeis36h,theextractiontemperatureis25°C,pHis6.0,andthesolid-li
7、quidratiois1:15・Undertheseconditions,enzymaticactivityofprotopectinaseandpectinaseinthefermentationbrothare668.50U/mLand502.90U/mL,respectively.Meanwhile,theextractionyieldofpectinis72」％withsignificantlyhigherqualitythanthatofobtainedfi-omconventiona
8、lextractionmethodusingacid・Moreimportantly,thisisprocesswithlowenergyconsumption,lowcost,andlittleenvironmentalpollution.(3)Thepurifyingandrefiningprocedureofpectinwassystematicallystudiedandmethodsforqualityanalysisofpectinwereestablished.Twodiffere
