MþC LþC
MÞ /¾U ......................................................................................................................... 1
CH¯¡NG 1. TÞNG QUAN VÞ NGHIæN CþU ........................................................ 5
1.1 TÞNG QUAN VÞ S¾U RIæNG ............................................................................ 5
1.1.1 Gißi thißu vß chi s¿u ri•ng ............................................................................... 5
1.1.2 Tißm n.ng ÿng dÿng tÿ ph¿ ph¿m vß s¿u ri•ng .............................................. 5
1.2 TÞNG QUAN VÞ LIGNIN ................................................................................... 6
1.2.1 Gißi thißu vß lignin .......................................................................................... 6
1.2.2 Ph‰n lo¿i lignin ................................................................................................ 9
1.2.2.1 Lignin Kraft .............................................................................................. 9
1.2.2.2 Lignin sulfite ............................................................................................. 9
1.2.2.3 Lignin alkaline (lignin soda) ..................................................................... 9
1.2.2.4 Lignin organosolv ................................................................................... 10
1.2.2.5 Lignin nß h¡i n±ßc ................................................................................. 10
1.2.3 Ho¿t t’nh sinh hßc .......................................................................................... 10
1.2.3.1 Ho¿t t’nh kh‡ng oxy ho‡ ......................................................................... 10
1.2.3.2 Ho¿t t’nh kh‡ng khu¿n ............................................................................ 11
1.2.3.3 Ho¿t t’nh chßng tia cÿc t’m ..................................................................... 12
1.2.4 þng dÿng cÿa lignin ...................................................................................... 14
1.2.4.1 þng dÿng trong n™ng nghißp, thÿc ph¿m. .............................................. 14
1.2.4.2 þng dÿng trong m™i tr±ßng, n.ng l±ÿng. ............................................... 14
1.2.4.3 þng dÿng trong l)nh vÿc y hßc, d±ÿc ph¿m. .......................................... 16
1.3 BIOCOMPOSITE þNG DþNG TRONG B¾O QU¾N SAU THU HO¾CH .... 17
1.3.1 Tßng quan v¿t lißu biocomposite trong b¿o qu¿n sau thu ho¿ch .................. 17
1.3.2 C‡c lo¿i mˆng sinh hßc ÿng dÿng trong n™ng nghißp ................................... 18
1.3.3 V¿t lißu biocomposite tÿ chitosan vˆ lignin .................................................. 19
1.3.3.1 Gißi thißu chitosan .................................................................................. 19
1.3.3.2 V¿t lißu mˆng sinh hßc tr•n c¡ sß chitosan ............................................ 20
1.3.5.3 Mßt sß nghi•n cÿu vß mˆng chitosan/lignin ........................................... 21
CH¯¡NG 2. /ÞI T¯þNG VË PH¯¡NG PHçP NGHIæN CþU ........................ 26
2.1 #ÞI T¯þNG NGHIæN CþU ............................................................................. 26
2.1.1 #ßi t±ÿng nghi•n cÿu .................................................................................... 26
2.1.2 Ph¿m vi nghi•n cÿu ....................................................................................... 26
2.2 HOç CH¾T, DþNG Cþ, THI¾T BÞ ................................................................... 26
2.2.1 H—a ch¿t ......................................................................................................... 26
2.2.2 Dÿng cÿ ......................................................................................................... 27
2.2.3 Thi¿t bß ........................................................................................................... 27
2.3 PH¯¡NG PHçP NGHIæN CþU ........................................................................ 28
2.3.1 C‡c ph±¡ng ph‡p chi¿t t‡ch thu lignin .......................................................... 28
2.3.1.1 Ph±¡ng ph‡p Kraft .................................................................................. 28
2.3.1.2 Ph±¡ng ph‡p alkaline ............................................................................. 28
2.3.2 Ph±¡ng ph‡p x‡c :ßnh thˆnh ph¿n c¿u trœc lignin ........................................ 28
2.3.2.1 Ph±¡ng ph‡p quang phß hßng ngo¿i bi¿n :ßi (FTIR) ............................ 28
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