Gimbun, J. and Nguang, S.L. and Pang, S.F. and Yeong, Y.L. and Kee, K.L. and Chin, S.C. (2019) Assessment of phenolic compounds stability and retention during spray drying of phyllanthus niruri extracts. Industrial and Engineering Chemistry Research, 58 (2). pp. 752-761. ISSN 0888-5885. (Published)
![[img]](http://umpir.ump.edu.my/style/images/fileicons/other.png) |
Pdf
Assessment of Phenolic Compounds Stability and Retention during Spray Drying of Phyllanthus niruri Extracts.pdf Restricted to Repository staff only Download (6MB) | Request a copy |
Abstract
This paper presents a method to enhance the thermal stability of Phyllanthus niruri polyphenols during spray drying. The major polyphenol content of the extracts derived from the aerial part of the plant was analyzed, using ultra-high-performance liquid chromatography, whereas the surface composition of the microcapsule was analyzed by X-ray photoelectron microscopy (XPS). Three encapsulant formulations that were made of maltodextrin (MD), whey protein isolate (WPI), and their combinations (WPI:MD = 1:9) were compared with a control formulation without encapsulation. The microencapsulation method by WPI:MD proposed in this work increased the average polyphenols retention percentage after spray drying from 72.7% (without encapsulation) to 87.2%. The powder encapsulated with WPI:MD (1:9) yielded the best retention of phyllanthin (84.33%), gallic acid (88.93%), and quercetin (88.39%), compared to the system encapsulated solely by WPI or MD. The XPS results confirmed the existence of surface protein, which acts as a protective layer, thereby enhancing the polyphenols stability in the microcapsule. The finding from this work shows that quercetin is more susceptible to thermal degradation than phyllanthin and gallic acid during spray drying.
| Item Type: | Article |
|---|---|
| Additional Information: | Indexed by Scopus |
| Uncontrolled Keywords: | Encapsulation; X-ray photoelectron microscopy; Thermodynamic stability; Polyphenol content |
| Subjects: | T Technology > TP Chemical technology |
| Faculty/Division: | Centre of Excellence: Centre of Excellence for Advanced Research in Fluid Flow Faculty of Chemical & Natural Resources Engineering Faculty of Civil Engineering & Earth Resources Faculty of Industrial Sciences And Technology |
| Depositing User: | Prof. Dr. Jolius Gimbun |
| Date Deposited: | 06 Mar 2019 06:50 |
| Last Modified: | 06 Mar 2019 06:50 |
| URI: | http://umpir.ump.edu.my/id/eprint/23975 |
| Download Statistic: | View Download Statistics |
Actions (login required)
 |
View Item |