KARAKTERISASI SIFAT KIMIA LIGNIN Kadar Lignin: Extracted Sample Hydrolisys, H2SO4 72%, 3 hrs, room temperature Hydrolisys H2SO4 3%, 121 oC, 30 min. Residue Filtrat Klason Lignin Spectrophotometer Acid Soluble Lignin
Tipe Cincin Aromatik (Syringyl/Guaiacyl Ratio): Hardwood Lignin Guaiacyl Syringyl Alkaline Nitrobenzene oxidation Vanilline Syringic acid Vanillic acid Syringaldehyde
Struktur Ikatan β-O-4 (Erythro Ratio): Erythro Form of β-O-4 Linkage Threo Form of β-O-4 Linkage O3; NaOH Products of Ozonation Erythronic acid Threonic acid
DELIGNIFIKASI Pengujian Kelarutan Lignin: Pulping Soda: Alkali aktif 20% Waktu pemasakan: 30, 60, dan 90 menit Suhu pemasakan: 120 oC Alat: Autoclave
HASIL PENELITIAN Kadar Lignin: Kadar Lignin Klason Tinggi Acid-Soluble Lignin Rendah Kadar Lignin Klason Rendah Acid-Soluble Lignin Tinggi