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" Recovery and Microencapsulation of Jujube (Ziziphus Jujuba Li) Bioactive Compounds Using Glandless Cottonseed Meal Protein Isolate as Carrier Agent "
Rojas-Barboza, Dante Yamid
Delgado, Efren
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Latin Dissertation
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| Language of Document
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English
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| Record Number
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1107369
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| Doc. No
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TLpq2443911352
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| Main Entry
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Delgado, Efren
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Rojas-Barboza, Dante Yamid
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| Title & Author
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Recovery and Microencapsulation of Jujube (Ziziphus Jujuba Li) Bioactive Compounds Using Glandless Cottonseed Meal Protein Isolate as Carrier Agent\ Rojas-Barboza, Dante YamidDelgado, Efren
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| College
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New Mexico State University
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| Date
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2020
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| student score
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2020
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| Degree
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M.S.
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| Page No
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82
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| Abstract
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The jujube, also known as Ziziphus jujube, is grown and cultivated in China. The fruit has been used in the medical fields due to its functional properties, nutritional and natural bioactive compounds. The constant challenge regarding the use of the bioactive compounds is their easy degradation during processing and storage. However, their stability can be improved with the microencapsulation process, in which a compound sensitive to adverse environmental conditions is retained within a protective polymeric material. Encapsulation by Spray Dryier process is a widely used methodology for the preservation of functional compounds for food, pharmaceutical, and cosmetic application. Frequently, carbohydrates such as maltodextrin and gum Arabic are used as microencapsulating agent. The glandless cottonseed meal protein (GCSMP) is a new source of plant-based protein and could be used as microencapsulating agent. This research aims to standardize the microencapsulation process of jujube phenolic compounds using GCSMP as a microencapsulating agent through spray-drying and response surface methodology. Three different drying temperatures and coating materials were used in the experiments. Maltodextrin (MD) and gum Arabic (GA) or MD and glandless cottonseed meal protein (GCSMP) were used as microencapsulating agent at five different ratios. The total solid content in the suspensions was 1.4%. Total Phenolic Content (TPC), antioxidant capacity by DPPH and FRAP, and the encapsulation efficiency (EE) (dependent variables) were analyzed in the spray-dried microcapsules. The microscopic structure of microcapsules was analyzed by scanning electron microscopy (SEM), and confocal laser scanning microscopy (CSLM). The results show that the type of coating material effects (p<0.05) the encapsulation efficiency of the spray-drying process. MD, combined with GA, showed the highest (p< 0.05) EE. The best (p< 0.05) MD/GA and MD/ GACSMP ratios were obtained with 8.4g MD/2.8g GA and 5.6gMD/5.6g GA, and with 8.4g MD/2.8g GCSMP and 5.6gMD/5.6g GCSMP. TPC, DPPH, and FRAP values decreasing significantly (p<0.05) at 150 and 160 °C during spray-drying. The optimum microencapsulation conditions were predicted at 146 and 143 °C using a ratio of 6.44gMD/4.76g GA, and with 5.32g MD/5.88g GCSMP, respectively. The results showed that GCSMP could be used as a microencapsulating agent with potential application in the food industry.
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| Subject
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Agricultural economics
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Food science
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