| China's blueberry industry has grown rapidly in recent years.In order to improve the convenience,effectiveness and diversity of blueberry consumption,and provide certain technical reference for the processing and production of blueberry products,this paper studied the following parts,mainly including:(1)Study on the extraction process of blueberry juice.In this article,the single-factor test and orthogonal test were used to optimize the compound enzyme ratio.the effects of cellulase,pectinase,and xylanase on the enzymatic hydrolysis of blueberry juice were compared,and the juice yield,soluble solids content,and functional component content were measured.I also studied the effects of temperature,enzymatic hydrolysis time and pH on the complex enzyme.The results showed that the most suitable ratio of compound enzymes is:0.01%cellulase,0.015%pectinase,and 0.05%xylanase the optimum hydrolysis temperature of the complex enzyme is 50?,the most suitable hydrolysis time is 1.5h,and the best pH is 3.After repeated tests,the juice yield rise by 11.13%,and the soluble solids content increase by 0.81%under these conditions.(2)Development of Blueberry Effervescent Tablets.This part mainly includes the determination of freeze-drying process parameters of blueberry powder,optimization of blueberry effervescent tablet formula and quality evaluation.The results show that the prefreeze temperature of vacuum freeze-drying of blueberry powder is-38? and the vacuum pressure is 0.1 kPa.Through the single factor tests,the effervescent agent ratio,the amount of blueberry powder added,and the amount of steviol glycosides were selected as the three factors of the response surface optimization test.The formula of the blueberry effervescent tablet is finally obtained:the disintegrant ratio(citric acid:sodium bicarbonate)is 1.53:1,the amount of blueberry powder is 45.2%,and the amount of sweetener is 1.42%.Through testing,the average weight of the blueberry effervescent tablet is 1.002g,the disintegration time is 4.83min,the hardness is 168.35N,the weight loss ratio measured by the friability is 0.091%,and the average pH is 4.59,which meet the quality requirements of the Chinese Pharmacopoeia for effervescent tablets.(3)Development of Blueberry Dietary Fiber Chewable Tablets.Fruit or vegetable chewable tablet,as a recently emerging leisure health food,is a new form of fruit processing,which has advantages of convenient storage and transportation and convenient edible way.In this test,the sensory score of the chewable tablet was used as an indicator,and the optimal formula of the product was determined through response surface optimization experiments,that is,the volume of addition of blueberry residue powder is 31.56%,the added volume of citric acid is 5.15%,and the additive amount of xylitol is 7.2%.And through the mouse defecation test,the small intestine advancing rate,the time of defecation,and the amount of defecation in 5h are used as evaluation indicators to verify the laxative function of intestines.The results show that the low,medium,and high dose groups has significant effects on increasing the small intestinal advancing rate,reducing the defecation time,and increasing the amount of defecation(p<0.01),indicating that the blueberry dietary cellulose tablet did have the function of intestinal laxative.(4)Research and development of Blueberry Compound Fruit Cake.The blueberry is blended with apple and cranberry,and the matching is:blueberry:apple:cranberry=1:2:1.And through single factor and response surface tests,I analyzed the effect of agar,sour agent,sweetener,and pectin on the taste and found the best formula for blueberry compound fruit cake:1%agar,3.18%sour,11.19%sweet,and 0.8%pectin. |
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