资源描述：
《新型方便米饭的生产工艺研究》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、新型方便米饭的生产工艺研究陈潇I，钱平2,华丽】，张晓姐2,刘凤娜2,卢蓉蓉】(1.江南大学食品学院，江苏无锡214122；2.中国人民解放军总后勤部军需装备研究所，北京100010)摘要：为了克服单一干燥造成的品质缺陷，木文提出了一种新型方便米饭的组合干燥方式，以得到一种中等水分含量，低水分活度的新型方便米饭产品。以蒸煮后的东北粳米为研究对象，主要探讨了组合干燥过程中热风温度、干燥转换点的物料含水率、微波强度、渗透处理对终产品品质的影响；并以成品色泽、复水比、复水后质构为指标，对不同干燥方式获得的产品性能进行了比较。经研究确定了最佳组合干燥工艺参数
2、：9()°C热风干燥至物料禽水率40%(w/w),2.5W/g微波强度下干燥至20%含水率，25°C温度下以3:2料液比向半干产品中加入28%葡萄糖和15%氯化钠混合渗透液处理1()min,最后以9()°C二次热风干燥至成品。产品的水分活度为0.589,含水量为17.83%,复水时间lOmin,复水比为2.35。结果显示，组合干燥方式生产周期短、能耗低，产品含有中等水分含量、低水分活度，可真空包装贮藏，复水后与新鲜米饭品质相近，是一种工业化生产方便米饭的新途径。关键词：方使米饭；组合干燥；渗透；微波；水分活度中图分类号：TS205.1Theresea
3、rchonanovelprocessingofinstantriceCHENXiaoi,QIANPing2,HUALii,ZHANGXiaojuanz,LIUFengna2,LURongrongi(1.SchoolofFoodScienceandTechnology,JiangnanUniversity,JiangSuWuXi214122;2.QuartermasterEquipmentInstituteoftheGeneralLogisticalDepartmentofChinesePeople'sLiberationArmy,Beijing100
4、010)Abstract:Akindofinstantricewithmediummoistureandlowwateractivity(Aw)wasobtainedviathenovelprocessing,whichcanovercomethequalitydefectcausedbythesingledryingprocess.Cookedround-grainedricewaschosenasatestmaterial.Theinfluenceofdifferentairtemperatures,themoistureconversionpo
5、int,themicrowaveintensityandtheosmotictreatmentonthepropertiesofproductsduringtheprocessingwasexamined.Thecolor,rehydrationratioandtexturewereusedastheevaluationindexes.Cookedricewasdriedunder90°Chotairuntiltheirmoisturecontentreached40%(w/w),followedbymicrowavedehydrationwithi
6、ntensityof2.5W/gtillthemoisturecontentreached20%.Itwaspenetratedwith28%glucoseand15%NaClmixedsolutionby3:2solid-liquidratiofor10minat25°C,andlastlydryingwith90°Chot-airtogetthefinalproducts.Theproductachieved0.589wateractivityand17.83%watercontent.Therehydrateratioandrehydratet
7、imewere10minand2.35,respectively.Theresultsshowedthatthenovelprocessingcouldcontributetocostreductionaswellaskeepingthevacuum-packingproductwithmediummoistureandlowwateractivity,whichpresentedsimilarqualitywithfreshrice・Thusitcouldbeanewwaytoprocessinstantriceindustrially・Keywo
8、rds:Instantrice;Combineddrying;Osmotic;microwave;water
