資源描述:
《結(jié)冷膠在含乳飲料_液體乳中的應(yīng)用研究》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、142015,Vol.18,No.1飲料工業(yè)基礎(chǔ)研究※結(jié)冷膠在含乳飲料、液體乳中的應(yīng)用研究劉華,趙六永,孫遠(yuǎn)征,鄭衛(wèi)東,吳春梅,于濤(內(nèi)蒙古伊利實(shí)業(yè)集團(tuán)股份有限公司液態(tài)奶事業(yè)部研發(fā)部,內(nèi)蒙古呼和浩特010110)摘要:結(jié)冷膠是一種優(yōu)良的微生物多糖。由于其具有極佳的穩(wěn)定及懸浮效果,在含乳飲料及液態(tài)乳產(chǎn)品中的應(yīng)用變得越來(lái)越廣泛。本文通過(guò)對(duì)結(jié)冷膠,特別是針對(duì)高?;Y(jié)冷膠在含乳飲料及液態(tài)乳體系中的應(yīng)用特性進(jìn)行研究,結(jié)合我國(guó)乳業(yè)實(shí)際情況,探索結(jié)冷膠的性質(zhì)及如何更加科學(xué)的使用結(jié)冷膠,進(jìn)而促進(jìn)結(jié)冷膠在含乳飲料及液態(tài)乳產(chǎn)品開(kāi)發(fā)和實(shí)際生產(chǎn)中的應(yīng)用。實(shí)驗(yàn)結(jié)果表明:結(jié)冷膠
2、溶液保持90℃時(shí)間越長(zhǎng),其彈性模量和粘度下降越明顯;結(jié)冷膠的彈性模量和粘度均隨著巴氏殺菌溫度的升高而降低;結(jié)冷膠在不同溫度的配料水中分散會(huì)溶脹,在75℃左右溶脹到極點(diǎn),表現(xiàn)為溶液粘度最高。如配料水溫度繼續(xù)上升,則溶液粘度又開(kāi)始下降;隨著回流次數(shù)的增加,高溫殺菌時(shí)間的延長(zhǎng),彈性模量和粘度均呈明顯的下降趨勢(shì)。由實(shí)驗(yàn)結(jié)果可得,在實(shí)際生產(chǎn)過(guò)程中,應(yīng)盡可能的降低結(jié)冷膠的受熱程度。殺菌的參數(shù)應(yīng)根據(jù)產(chǎn)品類別,在保證商業(yè)無(wú)菌的基礎(chǔ)上,以較低的殺菌溫度和較短的殺菌時(shí)間組合最佳。對(duì)于巴氏殺菌產(chǎn)品而言,75℃殺菌最適合,結(jié)冷膠的懸浮效果最佳。關(guān)鍵詞:結(jié)冷膠;彈性模量;粘度
3、;懸浮TheResearchontheApplicationofGellanGuminLiquidMilkProductsLIUHua,ZHAOLiu-yong,SUNYuan-zheng,ZHENGWei-dong,WUChun-mei,YUTao(InnerMongoliaYiliIndustryGroupCo.Ltd.LiquidMilkDivision,Hohhot010110,China)Abstract:Gellangumisakindofmicrobialpolysaccharides.Becauseofitsexcellentstab
4、ilityandsuspensioneffect,itisusedwidelyinliquidmilkproducts.Theresearchfocusesonapplicationcharacteristicsofgellangum,especiallyahighacylgellangum,inliquidmilkproducts.BasedonChina’sdairyindustryfacts,thispaperstudiesthepropertiesofgellangumandhowtoscientificallyuseit,inorderto
5、promoteapplicationlevelsofgellanguminliquidmilk.Theexperimentalresultsshowedthat:①Themoretimeofgellangumsolutionismaintainedat90℃,themoredecreaseofelasticmodulusandviscositywillbe.②Gellangumelasticmodulusandviscosityweredecreasedwithincreasingofthetemperatureofpasteurization.③I
6、fthegellangumdispersedinwaterofdifferenttemperaturesitwillswellandin75℃willgotoextremeandshowedthatthehighestviscosity.Iftemperatureofthewaterusedcontinuetoraise,theviscositystarttodecline.④Withtheincreaseinthenumberofreflux,theelasticmodulusandtheviscositywilldecreaseobviously
7、.Conclusions:Intheactualproduction,theheatingofgellangumshouldbereducedasmuchaspossible.Sterilizationparametersshouldbe,basedontheproductscategoryandensuredcommercialsterilization,thecombinationoflowertemperatureofsterilizationandtheshortertimeofsterilization.Forthepasteurizedp
8、roducts,sterilizationin75℃wasbestwithgellangumsuspendi