| Author | Sirinapa Thasak |
| Call Number | AIT Thesis no.FB-19-04 |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Food Engineering and Bioprocess Technology, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no.FB-19-04 |
| Abstract | In this study, the effects of different LED light sources (white, blue, green and red) on stability of ACN extract from red cabbage were investigated. Other important factors such as pH, copigmentation with Gallic acid (GA) and Gum arabic (GM), sugar and vitamin C were also considered. The results showed that the highest ACN decrease at sample under blue LED at pH 7, being up to 91% ACN content reduction and high color fading, followed by white and green, while red provided results close to dark condition (control). Copigmentation with copigment GA and GM in different level (weight ratio copigment /anthocyanin = 30, 60 and 90) can improve ACN stability after LED irradiation but GA also caused dramatically negative effect on ACN color. Nevertheless, GM showed better color stability of ACN sample than control at pH 5 and 7. Sugar adding (5, 10 and 15%) presented no effect on ACN stability, whereas vitamin C (0.025, 0.05 and 0.10%) can protect ACN content after LED irradiation around 50% comparing to control at only pH 7 for all concentration.
Summary, blue LED should be avoided for storage ACN-contained food products and red LED is recommended. Copigmentation can maintain ACN content depending on pH of copigment stability. Sugar did not affect on ACN stability and adding vitamin C on ACN contained food products with pH 7 presented protective effects.
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| Year | 2019 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. no.FB-19-04 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Bioprocess Technology (BP) |
| Chairperson(s) | Loc Thai Nguyen; |
| Examination Committee(s) | Anal, Anil Kumar;Salin, K. R.
; |
| Scholarship Donor(s) | Her Majesty the Queen‟s Scholarships (Thailand) ; |
| Degree | Thesis (M. Sc.) - Asian Institute of Technology, 2019 |