ANTI-NUTRITIONAL CONSTITUENT OF COLOCASIA ESCULENTA ...

Figure BI-3.6
Figure B2-1.1
Figure B2-1.2
Figure B2-1.3
Figure B2-1.4
Figure B2-2.1
Figure B2-3.1
Figure B2-3.2
Figure B2-3.3
Figure B2-3.4
Figure B2-3.5
Figure B2-4.1
Figure B2-4.2
Figure B2-4.3
Figure B2-4.4
Figure CI-1
Figure Cl-2
Figure C3-1
Figure C3-2
Figure C3-3
Figure C3-4
Figure C3-5
Figure C3-6
Figure C3-7
Figure C3-8
Effect ofpH on the stability ofAmadumbe a-amylase inhibitor 136
Types ofsaponin 141
Pathway to biosynthesis oftriterpenes 142
Basic aglycone (sapogenin) skeletons -triterpene 143
Basic aglycone (sapogenin) skeletons - steroidal 145
Extraction protocol for obtaining native sapomns from 148
Amadumbe tubers
Thin-layer chromatographic examination ofsaponin compounds 153
from an Amadumbe (Colocasia esculenta) tuber
Infrared spectrum of saponin B1 fraction of white Colocasia 154
esculenta
Chromatogram ofsaponin B1 from Amadumbe anaylsed by GC- 155
MS
Chromatographic profile ofsaponin B1 analysed by GC-MS 156
Major fragmentation pattern of sitosterol irrespective of the 157
isomeric form
Numbering ofsterol carbons 159
The structural formula ofgamma-sitosterol 159
The structural formula ofbeta-sitosterol 160
The structural formula ofgamma- and beta-sitosterol 161
Hydrolysis of ATP to ADP, the fundamental mode of energy 188
exchange in biological systems
The sodium-potassium exchanger, which establishes the ionic 189
concentration balance that maintains the cell potential.
Growth rates ofrats fed diets containing beta-sitosterol 197
Body weight gains ofmale Sprague-Dawley rats 199
Body weight/food consumed ofmale Sprague-Dawley rats 200
Male Sprague-Dawley rats used for experimental tests 201
Representative photomicrographs ofhistology ofliver 205
Representative photomicrographs ofhistology ofkidney 206
Representative photomicrographs ofhistology ofduodenum and 207
ileum
Lower and upper intestinal Na+/K+-ATPase activity in rats 208
XlV