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ID:32282493
大小:970.26 KB
页数:41页
时间:2019-02-02
《搅拌型果酱、蔬菜汁复合酸奶加工工艺的研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、中文摘要在现有发酵乳制品加工理论及设备的基础上,结合山东省滨州市乳品生产和乳品市场的实际情况,对搅拌型果酱、蔬菜汁复合酸奶的加工工艺进行了研究。主要内容包括:果酱、蔬菜汁合理加入量的选择;菌种筛选及最佳接种量的确定:保温发酵温度和时间的优选;果酱、蔬菜汁添加时间对产品质量的影响;最佳加工工艺及产品稳定性优选等。试验结果表明:果酱、蔬菜汁的最适宜加入量分别为8%和2%:菌种以保加利亚乳杆菌(Lactobsoillusbulgaricus)和嗜热链球菌(StrepococcusthermophYlus)按1:1比例混合菌种
2、为宜,接种量3%;保温发酵温度为41—42℃,时间为3—4小时;为使产品有较好的稳定性,原料乳需经均质处理并添加O.2%的搅拌型酸奶复合稳定剂;在保温发酵结束后添加果酱和蔬菜汁,经搅拌均匀后进行灌装,在4-6"C条件下冷藏后熟12__24小时成为产品,该产品在4—6℃冷藏条件下,最佳贮藏期为7天。经检测分析该产品营养丰富,风味独特、酸甜适口、符合国家食品卫生标准,是一种纯天然营养保健饮品,本研究提出的优化生产工艺可用于指导生产。关键词搅拌型,果酱、蔬菜汁,酸奶,加J二J二艺AbstractOnthebasisofthe
3、existingfermentationdatryprocessingtheoryandequipment。iIIcombinationwiththeactualsituationoflocaldairyproduction,thepresentpaperpresentedasystematicstudyoftheprocessingcraftforstirringjamandthevegetablejuiceyogurt.Themainresearchcontentincludes:tostudytheoptimal
4、quantityofthejamandvegetablesjuieewhichaddedintheyogurt;toscreenthebacteriaspawnandtheoptimalamountoftheinoculationdosage;tostudythetemperatureandtimeofheatpreservationfermentation;theinfluenceofaddingtimeofjamandvegetablesjuiceonproductquality;optimalprocessing
5、craftandproductstability.Theresultindicatedthattheoptimumamountofjamandvegetableis8%and2%respectively,andinoculationofLactobaoillus.BulgaricusandStrepococcusThermophilusbytheproportionof1:1withtheinoculationdosageof3%gavethebestquality.Theresearchresultsalsoshow
6、edthatheatpreservationfermentationtemperatureis41-42℃,theperiodis3·4hoursandinordertoimprovethestability,themwmilkneedstopassthroughisolTopicprocessingandtoaddO.2%stirringyogurtcompoundstabilizer.Throughthestudy,weknowthatthejamandvegetablesjuiceshouldbeaddedaft
7、erthefermentationandbecannedafterstirring,afterthat.itisbesttobecoldstoredat4-6"Candusepost—acidificationfor12-24hours.Throughexamination,theproductexpressedgoodflavorofbalancedSOUrandsweettaste,andreachesthenationalfoodhealthstandard.Sothefinalproductisonekindo
8、fpurenaturalandnutritioushealthcaredrink.Theshelflifeis7daysundertheconditionofcoldstoringunder4-6℃.Theexperimentaldataandfindingsofthisstudycaubeusedtoinstructthepra
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