<![CDATA[Oleoresin jahe, seperti halnya oleoresin dari rempah lain, merupakan hasil ekstraksi rempah yang memiliki profil flavour atau perisa yang mendekati rempah segar. Dalam industri makanan dan minuman, perisa dalam bentuk oleoresin lebih dikehendaki daripada rempah segar atau kering karena sifat perisanya yang lengkap, konsisten dan terukur. Akan tetapi, oleoresin mudah mengalami degradasi akibat udara, cahaya, air dan temperatur tinggi, bahkan memiliki umur simpan yang singkat jika penyimpannya tidak tepat. Karakteristik oleoresin yang kental dan lengket juga menyulitkan penanganan dan penggunaannya. Mikroenkapsulasi menawarkan penyelesaian bagi masalah-masalah tersebut. Tujuan dari penelitian ini untuk mengetahui pengaruh konsentrasi oleoresin dan komposisi bahan penyalut terhadap karakteristik milcroenkapsulasi oleoresin jahe, Oleoresin yang digunakan sebagai bahan aktif, diekstrak secara perkolasi dari serb uk jahe emprit dengan pelarut etano!. Mikroenkapsulasi dilakukan dengan metode spray drying menggunakan bahan penyalut maltodekstrin dan natrium kaseinat. Penelitian menggunakan Rancangan Acak Lengkap Faktorial dimana konsentrasi oleoresin (faktor A) terdiri atas 4 taraf : A 1= 5%, A2= 10%, A3= 15% dan A4= 20% serta nisbah maltodekstrin terhadap natrium kaseinat (faktor B) terdiri atas 2 taraf: 81= 92,5:7,5 dan B2 = 70: 30 dengan dua ulangan. Spray dryer Lab Plant SD-05 dioperasikan pada temperatur inlet 160"C dan outlet 100°C dan laju umpan IS ml/menit. Parameter yang diamati meliputi total oil, surface oil, oil recovery dan kadar air. Mikrokapsul oleoresin jahe terbaik diperoleh dari perlakuan konsentrasi oleoresin 10% dan nisbah maltodekstrin terhadap natrium kaseinat 92,5:7,5 dengan total oil 2,34%, oil recovery 87,50%, surface oil 0,27%, dan kadar air 4,97%. Effect Of Oleoresin Concentration And Encapsulating Material Compositions On The Properties Of Microencapsulated Ginger Oleoresin Using Spray Drying MethodGinger oleoresin, like other oleoresins is an extractive product of spices that exhibits flavour profiles close to fresh ground spices. In food and beverage industries, oleoresin is more preferable than fresh or dried spices due to its complete flavour characteristics, consistency and measurability. However, oleoresin undergoes degradation easily in the presence of air, light, moisture and heat, and also has short storage life if not stored properly. Oleoresin is available in the form of viscous and sticky liquid, and difficult to handle. Microencapsulation offers solutions to these problems. In these experiments, oleoresin was encapsulated in maltodextrin and sodium caseinate using spray drying technique. Oleoresin was extracted from dried ground emprit ginger with ethanol using percolation technique. This research was aimed at determining the effect of oleoresin concentration and encapsulating material compositions on the properties of microencapsulated ginger oleoresin. Experiments were performed using complete randomized factorial experimental design with two factors. Factor A (oleoresin concentration) consists of: Al ~ 5%, A2= 10%, A3= 15%, A4=20% and factor B (maltodextrin to sodium caseinate ratio) consists of: 81= 92,5:7,5 and 82= 70: 30; each treatment was done in Lab Plant SD-05 Spray dryer was operated at an inlet temperature of 160°C and outlet temperature of lOO°C and a feed rate of 15 ml/min. Parameters investigated are total oil, surface oil, oil recovery and moisture content. The best microcapsule properties was obtained from microcapsules containing oleoresin 10% and maltodextrin and sodium caseinate at the ratio of 92.5:7.5 with total oil of 2.34%, oil recovery of 87.5% and surface oil of 0.27%.]]>
