标题：MIKROEMULSIFIKASI FRAKSI TIDAK TERSABUNKAN (FTT) DISTILAT ASAM LEMAK MINYAK SAWIT (DALMS) [Microemulsification of Unsaponifiable Fraction (USF) of Palm Fatty Acid Distillate (PFAD)]
出版社：Departemen Ilmu dan Teknologi Pangan, IPB Indonesia bekerjasama dengan PATPI
摘要：P alm 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 unsa - ponifiable fraction (USF). In the form of emulsion, USF will be convenien t and easy to use as food supplement s or fortificant s . Microemulsion is a type of emulsion that ha s stable droplet size s less than 10 m m. Hence, the best emulsifier for USF microemulsion is important to be determine d . The USF micro - emulsion 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 emulsifiers at concentration of 0.5 , 1.0 , and 1.5% (w/v). The m icroemulsions were analyzed for their viscosity, stability, and particle size distribution s , as well as microstructure s . The results showed that characteristics of microemulsion were affected by emulsifier type s and concentration s . Tween 80 produced better microemulsion than lecithin indicated by more stable emulsion s , smaller droplet size s , and narrower ranges of droplet size distribution s . The i ncreasing lectihin concentration s resulted in a narrower droplet size distribution but the average droplet size was not always smaller. Conversely, the increasing tween 80 concentration s increased average droplet size s and ranges of particle size distributions . The most suitable emulsifier for USF microemulsion was tween 80 at concen - tration of 0.5%. This microemulsion contained bioactive compounds derived from USF , namely vitamin E (mainly tocotrienols), phytosterols, and squalene.
