PENENTUAN SISTEM PELARUT OPTIMUM PADA EKSTRAKSI ANTOSIANIN DARI KELOPAK BUNGA ROSELLA (Hibiscus sabdariffa L.) BERDASARKAN PARAMETER KADAR ANTOSIANIN DAN DENSITAS WARNA
| Main Authors: | , MUHAMMAD YUSUF S., , Andayana Puspitasari Gani, M.Si., Apt. |
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| Format: | Thesis NonPeerReviewed |
| Terbitan: |
[Yogyakarta] : Universitas Gadjah Mada
, 2014
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| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/129445/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=69836 |
Daftar Isi:
- The addition of colorant agents on the food and beverage products were can not be avoided. The usage of them requires a strict of supervision, moreover the high tendency in the use of synthetic colorants. Roselle (Hibiscus sabdariffa L.) is one of the natural resources and has a high potency to be the origin of natural colorant because of its high content of anthocyanins. The optimization of its anthocyanin extraction requires a separate study for reach the high and stable content of anthocyanin extracts by vary the solvent�s compotition, acidify the solvent with organic or mineral acid, and measure the duration of extraction. The solvent�s system was made on 2 types, acidified with 0.01% of HCl and acidified with 3% of acetic acid. The solvent�s compotition on each system was made on 3 formulas, 1 part of absolute ethanol