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APPENDIX 13. Emulsion Capacity Me<strong>as</strong>urement (ml/g) <strong>of</strong> Crawfish <strong>and</strong> Commercial Chitosans with pH Variations<br />

Sample<br />

pH<br />

2 4 6 8 10<br />

DCMPA 395.3 (5.37) a 247.6 (2.47) a 102.4 (7.85) d 348.7 (5.16) a 334.8 (0) cd<br />

DMCPA 395.8 (25.38) a 230.7 (37.19) a 118.7 (11.60) cd 322.0 (34.29) a 328.3 (5.16) d<br />

DMPCA 387.4 (15.70) a 253.5 (0.42) a 126.3 (7.07) bcd 315.2 (5.37) a 362.4 (2.69) bc<br />

DMPAC 343.2 (15.49) abc 148.3 (4.17) b 171.7 (18.17) ab 358.5 (10.32) a 363.8 (7.42) b<br />

DPMCA 337.8 (2.47) abc 224.3 (18.17) a 113.8 (1.20) d 298.7 (9.33) a 317.3 (13.22) de<br />

Vanson 75 371.4 (23.55) ab 258.9 (19.66) a 136.3 (22.27) bcd 329.7 (15.49) a 335.8 (2.69) cd<br />

Sigma 91 385.1 (9.05) a 245.9 (2.12) a 100.3 (16.55) d 252.3 (48.37) a 396.8 (0.85) a<br />

Control 1 294 (22.06) c 96.1 (8.06) b 203.4 (14.64) a 270.9 (20.51) a 384.7 (13.08) ab<br />

Control 2 315.6 (13.44) bc 119.0 (17.82) b 168.6 (5.16) abc 322.3 (57.49) a 290.1 (0.78) e<br />

Control 3 0 0 0 0 0<br />

Numbers in parentheses are st<strong>and</strong>ard deviations, Means with different letters are significantly different (p < 0.05),<br />

DCMPA=decolorized, demineralized, deproteinized, deacetylated; DMCPA= demineralized, decolorized, deproteinized,<br />

deacetylated; DMPCA= demineralized, deproteinized, decolorized, deacetylated; DMPAC= demineralized,<br />

deproteinized, deacetylated, decolorized; <strong>and</strong> DPMCA= deproteinized, demineralized, decolorized, deacetylated.<br />

Commercial crab <strong>chitosan</strong>s (Vanson75 <strong>and</strong> Sigma91). Control 1=38 ml soy protein solution (1%) only; Control 2= 9ml<br />

Acetic acid (1%) + 38 ml soy Protein solution (1%); Control 3=9 ml Chitosan solution (0.5%) only.<br />

85

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