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1、長春工業(yè)大學學士學位畢業(yè)論文摘要本實驗以山藥、榛果、杏仁、茶葉為主要原料,依據山藥榛果杏仁所特有的營養(yǎng)價值和保健價值,綜合國內外茶飲料行業(yè)的發(fā)展狀況,經過原料驗收、粉碎、均質、調配、殺菌等一系列工藝操作制得成品,并確定最優(yōu)生產工藝參數。本實驗主要包括以下三方面的內容:1.山藥護色條件的確定。通過實驗得出將切好的山藥薄片迅速放入已配制好的維生素C含量為0.10%,氯化鈉含量為0.50%的溶液中,不時攪拌,護色時間30min。2.杏仁乳的穩(wěn)定性研究。本實驗具體探討了通過均質、調整杏仁乳的酸度和加入乳化劑確定來提高杏仁
2、乳的穩(wěn)定性。均質采用溫度65℃壓力25MPa的二次均質法;加入檸檬酸調整PH值至4.30可有效防止杏仁乳中的蛋白質聚沉;復配乳化劑的最佳配比為0.15%單甘油酯,0.25%海藻酸丙二醇酯,0.10%大豆磷脂。3.成品殺菌條件的確定。通過實驗發(fā)現當控制殺菌加熱溫度為85℃加熱時間為20min時不僅能延長成品的保質期,還能最大程度上減少由于加熱對成品品質的破壞。以上條件下制得的成品酸甜適中、口感細膩,營養(yǎng)價值高,兼具杏仁乳的香味和茶的香氣。關鍵詞:山藥;榛果;杏仁;茶;工藝研究36長春工業(yè)大學學士學位畢業(yè)論文Abst
3、ractInthisexperiment,yam,hazel,almond,teaasthemainrawmaterial,combinethepeculiarnutritionvalueandhealthyvalueofthefourwiththedevelopmentsituationofteabeverageindustryathomeandabroad,throughtheselection,crushing,homogenization,allocate,sterilizationandsoontoge
4、tthefinalproduct,andtodeterminetheoptimalproductionparameters.Thisexperimentmainlyincludesthefollowingthreecontents:1.Protectthecolorofyam.Inthisexperiment,Icutyamintochipsthenquicklyputthemintocompoundsolutionof0.10%vitaminCand0.50%sodiumchloride,keepstiring
5、for30minutestokeepthebestprotectcoloreffect.2.Thestabilitystudiesofalmondmilk.Imainlyusehomogeneous,adjustthealmondmilkacidityandputemulsifierinittoimprovethestabilityofalmondmilk.Theexperimentshowsthebesthomogeneityconditions:homogenizationpressureof25MPa,tw
6、ice,thetemperatureis65℃.Putcitricacidto4.30pHvaluecaneffectivelypreventtheproteinofmilkgettogethertodeposit;thebestproportionofcompoundemulsifieris0.15%singlecrosslinker,0.25%alginatepropyleneglycolesters,0.10%soybeanlecithin.3.Thesterilizationoffinalproduct.
7、Itisfoundthatwhensterilizationconditionsare:sterilizationtemperatureof85℃,timeis20min.Notonlythequalityguaranteeperiodofthefinalproductcanbeextend,butalsoitcanmaximumlyreducethedestructionofheatingtothequality.Productsobtainedundertheseconditionshavewonderful
8、tasteofsweetandsour,highnutritionvaluesandflavorwithalmondmilkandtea.Keywords:Chineseyam;Hazel;Almond;Technologyresearch36長春工業(yè)大學學士學位畢業(yè)論文目錄摘要1Abstract2前言5第一章文獻綜述61.1茶葉61.1.1茶葉資源61.1.2茶葉的營養(yǎng)