Isolation And Characterization Of Oryzanol From Crude Rice Bran Oil

Hapsari, Rezka Putri and Y, Anugerah Fikri and Zullaikah, Siti and Rachimoellah, H.M (2013) Isolation And Characterization Of Oryzanol From Crude Rice Bran Oil. JURNAL TEKNIK POMITS, 1 (1). pp. 1-6. ISSN 2337-3539

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Official URL: http://digilib.its.ac.id/public/ITS-paper-30811-23...

Abstract

The isolation of oryzanol from crude rice bran oil (RBO) which have extracted with 4 kind of solvents (n-hexane, iso-propanol, methanol dan ethanol) is done to decide the best solvent was achieved by a two-step crystallization process. In the first crystallization, oryzanol was concentrated in the liquid phase along with FFA,MG, squalene, tocols, and phytosterols, whereas the solid phase contained mainly TG and steryl esters. Oryzanol-rich product obtained from the first crystallization was subjected to the second crystallization where the oryzanol-rich product was kept at -20 ᴼC for 24 h. N-Hexane was added as anti-solvent to the oryzanol-rich product and kept at 1+5 ᴼC for another 48 h. From the research, we could conclude that the suitable solvent to extract CRBO from rice bran was ethanol, which could give the best result with oryzanol purity 1,258%, yield of CRBO 5,89% and low %FFA, 27,47%. Many factors such as the process of Dewaxing and Degumming, the solvent to CRBO and DDRBO ratio on the first crystallization, the storage temperature on the first crystallization, and the effect of storage to oryzanol rich product from first crystallization process could give impact to purity and recovery of oryzanol. So the best result could be reached in 80/1 ratio of DDRBO with first crystallization temperature at -30 ᴼC after storage, with oryzanol purity in oryzanol rich product (LP1) 2,109% and recovery 82,109%. But unfortunately, oryzanol crystal could not be formed in that temperature of this research.

Item Type: Article
Additional Information: 660.284 298 Hap i
Uncontrolled Keywords: Rice Bran, Crude Rice Bran Oil, Dewaxed Degummed RBO, dewaxing and degumming, first and second crystallization, oryzanol rich product
Subjects: T Technology > TP Chemical technology > TP156 Crystallization. Extraction (Chemistry). Fermentation. Distillation. Emulsions.
Divisions: Faculty of Industrial Technology > Chemical Engineering
Depositing User: Siti Zullaikah
Date Deposited: 14 Dec 2017 07:23
Last Modified: 14 Dec 2017 07:23
URI: http://repository.its.ac.id/id/eprint/44379

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