Hazrulrizawati, Abd Hamid and Roziasyahira, Mutaza and Izzah Hayati, Yahya and Zeyohannes, Senait Sileshi (2021) Starch-based film incorporated with clitoria ternatea flower extracts as pH indicator. In: Materials Science Forum. 2nd Postgraduate Symposium on Industrial Science and Technology, SISTEC 2020 , 26 - 27 August 2020 , Virtual, Online. pp. 252-256., 1025. ISSN 0255-5476 ISBN 978-303573757-8 (Published)
![[img]](http://umpir.ump.edu.my/style/images/fileicons/other.png) |
Pdf
MSF.1025.252 Starch.pdf Restricted to Repository staff only Download (655kB) | Request a copy |
|
|
Pdf
Starch-based film incorporated with clitoria ternatea flower extracts_ABST.pdf Download (270kB) | Preview |
Abstract
The present study demonstrated the evaluation of starch-based film formulated with Clitoria ternatea flower extracts as a pH indicator. Maceration, sonication, and infusion extraction were employed to determine the percentage yield of the flower extracts. Extract solutions (1 mg/mL) were subjected to UPLCQTOF/MS to detect and identify the chemical constituents of C. ternatea. UV-Vis analysis was done by treating the extracts (4 mg/mL) with prepared buffer solution in various pH values (2.0–11.0), and the absorbance was observed within a broad range of wavelength (400–700 nm). Approximately 100 mL solution of 4 g starch, C. ternatea extracts, and glycerol (19 g plasticiser/100 g starch) in distilled water underwent gelatinisation to form the desired thin film. The functional group presented in the film and raw materials were detected and defined by analysis through FTIR spectroscopy. From the results, the maceration technique produced a higher yield of extracts with 41.48% compared to the sonication and infusion methods. Varied colours of C. ternatea solution were observed at different pH values. At pH lower than 3, the extract solution was light red to purple, while at a higher pH, i.e., towards increasing basic pH (4, 5, 6, 7, 8, and 9), the colour can be perceived as blue. The gelatinisation process produced a blue smooth thin layer of film. FTIR analysis showed that all samples contain a C-O bond (3300 cm-1). Starch-based film formulated with C. ternatea as a pH indicator can be applied to detect the food spoilage in food wrapper and packaging production.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Additional Information: | Indexed by Scopus |
| Uncontrolled Keywords: | Clitoria ternatea; pH indicator; Starch-based film |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry |
| Faculty/Division: | Faculty of Industrial Sciences And Technology Institute of Postgraduate Studies |
| Depositing User: | Dr. Hazrulrizawati Abd Hamid |
| Date Deposited: | 01 Oct 2024 06:29 |
| Last Modified: | 01 Oct 2024 06:29 |
| URI: | http://umpir.ump.edu.my/id/eprint/42681 |
| Download Statistic: | View Download Statistics |
Actions (login required)
 |
View Item |