Photodegradation and antioxidant activity of Chlorophyll a from Spirulina (Spirulina sp.) Powder=Fotdegradasi dan aktivitas klorofil a dari serbuk spirulina (Spirulina sp.)
| Main Author: | Perpustakaan UGM, i-lib |
|---|---|
| Format: | Article NonPeerReviewed |
| Terbitan: |
[Yogyakarta] : Universitas Gadjah Mada
, 2008
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| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/27345/ http://i-lib.ugm.ac.id/jurnal/download.php?dataId=10401 |
Daftar Isi:
- Research on chlorophyll a from Spirulina (Spirulina sp.) powder has been done in order to determine chlorophyll a content, to compare degradation pattern and kinetics degradation of chlorophyll a and crude extract as well as to investigate the difference of antioxidant activity of chlorophyll a with or without irradiation. Chlorophyll a content in spirulina powder was calculated by using Porra's equation. Irradiation and recovel}' ability of chlorophyll a were measured by using volpi light (Intralux 6100) equipped with daylight filter. The antioxidant activity of chlorophyU a was determined by using DPPH method. The results showed that chlorophyll a content was 2.886 pg/g dl}' weight Chlorophyll a has the higher stability than crude extract against 60 minutes irradiation at room temperature. Kinetics degradation of chlorophyll a was based on second order while crude extract based on first order. Chlorophyll a and crude extract have recovel}' ability. The results also showed that antioxidant activity of chlorophyll a was increased after 60 minutes of irradiation. Keywords: antioxidant activity, chlorophyll a, photodegradation, spirulina