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Effects of drying methods on the characteristics of rambutan (Nephelium lappaceum L.) seed fat: an optimisation approach

Jahurul, Md. Haque Akanda and L. N., Ying and Amir, Hina and Azzatul, Fatonah and Sharifudin, Md. Shaarani and Mamat, Hasmadi and J.S., Lee and Abdul Hamid, Mansoor and Roslan, Jumardi and Matanjun, Patricia and Khan, M. Firoz and Sarker, Md. Zaidul Islam (2019) Effects of drying methods on the characteristics of rambutan (Nephelium lappaceum L.) seed fat: an optimisation approach. Engineering Reports. pp. 1-12. ISSN 2577-8196

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The pre-treatment of oilseeds prior to extraction process may affect oil yield and quality. The aim of this study was to investigate the effects of two drying methods on rambutan seed fat (RSF) yield and their oxidative stability, physicochemical properties, and crystal morphology. Response surface methodology (RSM) was used in the optimisation and investigation of the effects of three process conditions: seed weight (g), extraction time (min), and solvent volume (ml) on RSF yield. Under optimal conditions, a maximum RSF yield of 44.14% was obtained. The differences between RSF pre-treated with oven-drying and RSF with freeze-drying methods in slip melting point (38.3◦C to 39.7◦C), free fatty acid (3.13 to 3.50 mg KOH/g fat), peroxide value (1.04 to 1.67 meq of O2/kg of fat), p-anisidine value (1.10 to 1.56), and total oxidation value (4.21 to 5.67) were significant (p < 0.05). Both fats showed needle-like shaped crystals. Our results provide usefu linformation in the pre-treatment of RSF, which has potential to be used as blending component with palm oil for cocoa butter equivalent formulation in chocolate and confectionery industries.

Item Type: Article (Journal)
Additional Information: 6605/76879
Uncontrolled Keywords: characteristics, crystal morphology, freeze and oven drying, rambutan seed fat, RSM
Subjects: R Medicine > RS Pharmacy and materia medica > RS192 Materia Medica-Pharmaceutical Technology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Pharmacy
Depositing User: Professor Md. Zaidul Islam Sarker
Date Deposited: 30 Dec 2019 15:27
Last Modified: 30 Dec 2019 15:27
URI: http://irep.iium.edu.my/id/eprint/76879

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