英文文献汇报ppt课件.pptx
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1、在整堂课的教学中,刘教师总是让学生带着问题来学习,而问题的设置具有一定的梯度,由浅入深,所提出的问题也很明确我们毕业啦其实是答辩的标题地方Optimization of spray drying process for developing seabuckthorn fruit juice powder using response surface methodologyReporteReporter rDateDateLai Yunfei2016/11/10在整堂课的教学中,刘教师总是让学生带着问题来学习,而问题的设置具有一定的梯度,由浅入深,所提出的问题也很明确pintroductioni
2、ntroductionpExperimentalExperimentalpResults and Results and discussiondiscussionpConclusionConclusionCONTANTS在整堂课的教学中,刘教师总是让学生带着问题来学习,而问题的设置具有一定的梯度,由浅入深,所提出的问题也很明确introductionintroductionExperimentaExperimental lResults and Results and discussiondiscussionConclusionConclusionlSeabuckthorn(Hippophae
3、 rhamnoides),a deciduous shrub with yellow or orange berries is attracting considerable attention mainly for its medicinal value and great economic potential(Li and Schroeder 1996;Li and Wang1998).lSeabuckthorn juice can be effectively utilized for development of nutritive rich fruit juice powder by
4、 utilizing spray drying process.lThe aim of this study was to find out optimum conditions for spray drying process viz.,inlet air temperature and maltodextrin concentration levels for developing seabuckthorn fruit juice powder(SFJP)that should have desirable physico-chemical properties(moisture,solu
5、bility,dispersibility,vitamin C,overall color difference value).在整堂课的教学中,刘教师总是让学生带着问题来学习,而问题的设置具有一定的梯度,由浅入深,所提出的问题也很明确introductionintroductionResults and Results and discussiondiscussionConclusionConclusionExperimentaExperimental llProcess flow chart for development of Process flow chart for develop
6、ment of seabuckthorn fruit juice powderseabuckthorn fruit juice powderuRaw materialsRaw materialsSeabuckthorn fruits;Maltodextrin DE 10;tricalcium phosphate(Food grade)All other chemical reagents;uPreparation of seabuckthorn fruit juice slurryPreparation of seabuckthorn fruit juice slurrywashed thor
7、oughly and crushed in a mixer grinder,squeezed in muslin cloth and sieved through strainer(30 meshes)to get fine juice;pasteurized at 75 C for 30 min in water bath;在整堂课的教学中,刘教师总是让学生带着问题来学习,而问题的设置具有一定的梯度,由浅入深,所提出的问题也很明确introductionintroductionResults and Results and discussiondiscussionConclusionConc
8、lusionExperimentaExperimental lthe maltodextrin was dissolved in small portion of the juice and then added to the rest of the juice in a commercial blender(1 min at low speed and 2 min at high speed);Tricalcium phosphate was then added to the liquid slurry and then again mixed for 3 min in the blend
9、er at high speed to get uniform slurry.uSpray dryingSpray dryingThe slurry was spray dried in a pilot-scale spray dryer;inlet air temperature:148.79191.21 C;vacuum:50 Hg;outlet air temperature:6590 C;feed rate:30 rpm;air pressure:2.1 kg/cm2;The samples were then transferred to paper foil polyethylen
10、e packages of size 15 cm x 20 cm and sealed immediately .在整堂课的教学中,刘教师总是让学生带着问题来学习,而问题的设置具有一定的梯度,由浅入深,所提出的问题也很明确introductionintroductionResults and Results and discussiondiscussionConclusionConclusionExperimentaExperimental lSeabuckthorn berries Extraction of juicePasteurization(75C,30 min)Blending(M
11、altodextrin and tricalcium phosphate)Fruit juice slurrySpray drying(Inlet air temperature:148.79 191.21C)(Outlet air temperature:65-90C)(Feed rate:30 rpm)(Air pressure:2.1 kg/cm2)(Vacuum pressure:50 Hg)Seabuckthorn fruit juice powder(SFJP)Fig.1 Process flow chart for development of seabuckthorn frui
12、t juice powder在整堂课的教学中,刘教师总是让学生带着问题来学习,而问题的设置具有一定的梯度,由浅入深,所提出的问题也很明确introductionintroductionResults and Results and discussiondiscussionConclusionConclusionExperimentaExperimental llOptimization of spray drying process for development of Optimization of spray drying process for development of seabuc
13、kthorn fruit juice powderseabuckthorn fruit juice powderuStatistical analysisStatistical Software:Design Expert(Version 6.0.10,Stat-Ease Inc.,Minneapolis,MN).uThe RSM was used to derive the optimum formulation conditions using a five parameter five level Central Composite Rotatable Design(CCRD)which
14、 dictated 14 experimental runs.在整堂课的教学中,刘教师总是让学生带着问题来学习,而问题的设置具有一定的梯度,由浅入深,所提出的问题也很明确introductionintroductionResults and Results and discussiondiscussionConclusionConclusionExperimentaExperimental luTable 1 shows the real and coded values of the independent variables used to determine the optimumaFo
15、r drying 100 g fruit juice slurry by keeping juice(100 g)and tricalcium phosphate(2 g)as constant variables在整堂课的教学中,刘教师总是让学生带着问题来学习,而问题的设置具有一定的梯度,由浅入深,所提出的问题也很明确introductionintroductionResults and Results and discussiondiscussionConclusionConclusionExperimentaExperimental lThe responses for each run
16、(Table 2)were subjected to multiple regressioThe responses for each run(Table 2)were subjected to multiple regression n analysisanalysis.Initial level of vitamin C in fruit juice slurry before spray drying was 504.0 mg/100 g在整堂课的教学中,刘教师总是让学生带着问题来学习,而问题的设置具有一定的梯度,由浅入深,所提出的问题也很明确introductionintroducti
17、onResults and Results and discussiondiscussionConclusionConclusionExperimentaExperimental lYK=f(X1;X2)K=1,2,3,4,5;Y1(moisture constent),Y2(solubility),Y3(dispersibility)Y4(vitamin C),Y5(overall color difference value);X1 :levels of inlet air temperature;X2:maltodextrin concentration Y=0+1X1+2X2+11X1
18、2+2X222+12X1X2regression coefficients:0,1,2,11,22,12;X1:the coded levels of inlet air temperature X2:the coded levels of maltodextrin concentration this equation was used to evaluate the linear,quadratic and interactive effects of independent variables on the chosen response.在整堂课的教学中,刘教师总是让学生带着问题来学习
19、,而问题的设置具有一定的梯度,由浅入深,所提出的问题也很明确introductionintroductionConclusionConclusionExperimentaExperimental luTable 3 shows the ANOVA data for response variables and their significance at 95%confidence level along with correlation coefficients.A hig correlation coefficient(R 0.7478)explained the goodness of f
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