AKTIVITAS ANTIOKSIDAN Sargassum sp. YANG DIENKAPSULASIDENGAN KOMBINASI GUM ARAB DAN MALTODEKSTRIN
Excellent natural antioxidant is consumed asan ingredient for the defense of the body against the danger of free radicals.One alternative of natural antioxidants source is Sargassum sp. (brown algae). Microencapsulation application technology can be used to obtain the source of natural antioxidan...
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| Main Authors: | , |
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| Format: | Theses and Dissertations NonPeerReviewed |
| Published: |
[Yogyakarta] : Universitas Gadjah Mada
2013
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| Subjects: | |
| Online Access: | https://repository.ugm.ac.id/120151/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=60171 |
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| Institution: | Universitas Gadjah Mada |
| Summary: | Excellent natural antioxidant is consumed asan ingredient for the defense of the body
against the danger of free radicals.One alternative of natural antioxidants source is
Sargassum sp. (brown algae). Microencapsulation application technology can be used to
obtain the source of natural antioxidants that are recommended for consumed by public.
The presence of antioxidant compounds can be seen through DPPH test (1,1-diphenyl-2-picrylhydrazyl). This study aims to determine the concentration of gum Arabic and
maltodextrin�s combination as the coating agent for ethanol extract of Sargassum sp. and
to determine the effect of microencapsulation on it�s antioxidant activity.
This research used combination of gum arab and maltodextrin as a wall. In this
research, the content for gum arabic: maltodextrin(%) were 100:0, 75:25, 50:50, 25:75
and 0:100, respectively three times replications. Measurement of antioxidant activity are
done by UV-Vis spectrophotometer with 517 nmwavelengths. Arresting activities against
free radicals is defined as the inhibition percentage (IC50). The highest values of IC50for
gum arabic: maltodextrin (100:0)% with the average was 10656.92 (ppm) and for gum
arabic: maltodextrin (0:100)% had the lowest IC50values with an average 10116.25
(ppm). Dry extract of IC50values (without microencapsulation) was 1074.00 ppm and the
comparator control IC50 value (ascorbic acid) was 50 ppm. DMRT which further test
results indicate that gum arabic:maltodextrin (0:100)% is the best treatment to yield
(20.60%), moisture content (4.85%), solids solubility (91.37%), and antioxidant activity
(IC50= 10116.25 ppm). |
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