MIKROEMULSIFIKASI FRAKSI TIDAK TERSABUNKAN DISTILAT ASAM LEMAK MINYAK SAWIT. (Indonesian)

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    • Alternate Title:
      Microemulsification of Unsaponifiable Fractions of Palm Fatty Acid Distillate. (English)
    • Abstract:
      Palm fatty acid distillate (PFAD) is a by-product of palm oil refining that contains valuable bioactive compounds such as phytosterols, tocopherol, tocotrienols, and squalene which acummulates in unsaponifiable fraction (USF). In emulsion form, USF will be convenient and easy to use as food supplements or fortificants. Microemulsion is a type of emulsion that has stable droplet sizes of less than 10 μm. Hence, the best emulsifier for USF microemulsion is important to be determined. The USF microemulsion was prepared by homogenizing the sample mixtures at 12.000 rpm for 20 min at USF concentration of 10% (w/v) with lecithin and tween 80 as the emulsifiers at concentratiosn of 0.5, 1.0, and 1.5% (w/v). The microemulsions were analyzed for their viscosity, stability, and particle size distributions, as well as microstructures. The results showed that characteristics of microemulsion were affected by emulsifier types and concentrations. Tween 80 produced better microemulsion than lecithin as indicated by more stable emulsions, smaller droplet sizes, and narrower ranges of droplet size distributions. Increasing lectihin concentrations resulted in a narrower droplet size distribution but the average droplet size was not always smaller. Conversely, increasing tween 80 concentrations increased the average droplet sizes and ranges of particle size distributions. The most suitable emulsifier for USF microemulsion was tween 80 at concentration of 0.5%. This microemulsion contained bioactive compounds derived from USF, namely vitamin E (mainly tocotrienols), phytosterols, and squalene. [ABSTRACT FROM AUTHOR]
    • Abstract:
      Distilat asam lemak minyak sawit (DALMS) merupakan hasil samping pengolahan minyak goreng yang mengandung senyawa bioaktif fitosterol, tokoferol, tokotrienol, dan skualen yang sangat berharga. Komponen-komponen tersebut terakumulasi pada fraksi tidak tersabunkan (FTT). Untuk memperluas pemanfaatannya sebagai suplemen dan fortifikan pangan, FTT dapat diubah menjadi emulsi sehingga mudah untuk ditangani dan digunakan. Mikroemulsi merupakan bentuk emulsi dengan ukuran droplet kurang dari 10 m sehingga lebih stabil. Akan tetapi, jenis pengemulsi yang tepat untuk mikroemulsi FTT masih perlu untuk ditentukan. Mikroemulsi FTT dibuat pada konsentrasi 10% (b/v) dengan jenis pengemulsi tween 80 atau lesitin pada konsentrasi 0,5; 1,0; dan 1,5% (b/v) menggunakan homogenizer pada kecepatan 12.000 rpm selama 20 menit. Mikroemulsi yang dihasilkan dianalisis meliputi viskositas, stabilitas, distribusi ukuran partikel, dan mikrostruktur. Hasil penelitian menunjukkan karakteristik mikroemulsi FTT dipengaruhi oleh jenis dan konsentrasi pengemulsi. Tween 80 lebih mampu menghasilkan mikroemulsi yang lebih baik dibandingkan lesitin. Performa mikroemulsi yang baik ditunjukkan oleh mikroemulsi yang stabil, interval distribusi ukuran partikel yang sempit, serta ukuran droplet emulsi yang kecil. Peningkatan konsentrasi lesitin menghasilkan mikroemulsi dengan distribusi ukuran droplet yang lebih sempit, sedangkan rata-rata ukuran droplet tidak selalu lebih kecil. Sebaliknya, peningkatan konsentrasi tween 80 menyebabkan rata-rata ukuran droplet dan interval distribusi ukuran droplet yang lebih besar. Mikroemulsi terbaik menggunakan pengemulsi tween 80 dengan konsentrasi 0,5%. Mikroemulsi ini mengandung ini mengandung senyawa bioaktif yang berasal dari FTT berupa vitamin E (terutama tokotrienol), fitosterol, dan skualen. [ABSTRACT FROM AUTHOR]
    • Abstract:
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