Crescentiana Dewi Poeloengasih, Yudi Pranoto, Frida Dwi Anggraheni, Djagal Wiseso Marseno
In order to replace gelatin in capsule shell production, blends of sago starch and carrageenan were developed. Films and capsules were prepared with 10% (w/v) of sago starch, 25% (w/w starch) of glycerol and various carrageenan concentration (1, 2, 3% w/w starch) in two different kappa/iota-carrageenan ratio (1:3 and 3:1). The resulted films and capsules were characterized by mechanical property, water vapor and oxygen permeability. In addition, moisture absorption and solubility of capsule in acid solution were investigated. The results reveal that addition of carrageenan makes the films stronger and less permeable. Higher kappa-carrageenan content improved tensile strength and barrier properties of the films, whereas higher iota-carrageenan content produced films with higher elongation, moisture absorption and capsule solubility in acid solution. Capsule with 2% (w/w starch) of carrageenan at kappa-/iota-ratio 3:1 had the lowest moisture absorption, whereas capsule with 3% (w/w starch) of carrageenan at kappa/iota ratio 1:3 had the highest solubility. It is illustrated that sago starch/carrageenan blends can be used as hard capsule material. © 2017 Author(s).
Balai Penelitian Teknologi Bahan Alam, Lembaga Ilmu Pengetahuan Indonesia, Jalan Yogya - Wonosari Km. 32, Gading, Playen, Gunungkidul, D. I. Yogyakarta, 55861, Indonesia; Fakultas Teknologi Pertanian, Universitas Gadjah Mada, Yogyakarta, 55281, Indonesia; Fakultas Pertanian, Universitas Widyagama, Malang, Indonesia
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