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| Title | Photodegradation and Antioxidant Activity of Chlorophyll a From Spirulina (Spirulina sp.) Powder | Judul Indonesia: Fotodegradasi dan Aktivitas Antioksidan Klorofil a dari Serbuk Spirulina (Spirulina sp.) |
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| Author(s) | Leenawaty Limantara, Ph.D Hari Kristopo Rebecca Christiana |
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| Series Title | GMD | Jurnal Ilmiah Nasional |
| Language | Indonesia |
| Publisher | FMIPA - Universitas Negeri Yogyakarta |
| Publishing Year | 2008 |
| Publishing Place | Yogyakarta |
| Collation | Koleksi elektronik |
| Abstract/Notes | 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 recovery ability of chlorophyll a were measured by using volpi light (Intralux 6100) equipped with daylight filter. The antioxidant activity of chlorophyll a was determined by using DPPH method. The results showed that chlorophyll a content was 2.886 μg/g dry 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 recovery ability. The results also showed that antioxidant activity of chlorophyll a was increased after 60 minutes of irradiation. |
| Specific Detail Info | Indonesian Journal of Chemistry. Vol. 8, No. 2. Jurusan Kimia - FMIPA, UGM Yogyakarta |
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