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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
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Tipe Cincin Aromatik (Syringyl/Guaiacyl Ratio):
Hardwood Lignin Guaiacyl Syringyl Alkaline Nitrobenzene oxidation Vanilline Syringic acid Vanillic acid Syringaldehyde
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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
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DELIGNIFIKASI Pengujian Kelarutan Lignin: Pulping Soda: Alkali aktif 20% Waktu pemasakan: 30, 60, dan 90 menit Suhu pemasakan: 120 oC Alat: Autoclave
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HASIL PENELITIAN Kadar Lignin:
Kadar Lignin Klason Tinggi Acid-Soluble Lignin Rendah Kadar Lignin Klason Rendah Acid-Soluble Lignin Tinggi
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