physicochemical and functional properties of crawfish chitosan as ...

Amongst the five types of oil used, olive oil generally demonstrated more FBC with crab
and crawfish chitosan samples, whereas canola oil showed the least FBC. Previous study by Rout
(2001) showed that the average FBC of commercial crab chitosans and crawfish chitosans for
soybean oil was 587% and 706%, respectively.
Table 8. Fat Binding Capacity of Crawfish and Commercial Chitosans
Sample
Fat Binding Capacity (%)
Soybean Canola Corn Sunflower Olive
DCMPA
519.7(17.99)
bc
499.3(22.41)
bc
539.6(11.57)
bc
519.8(25.08)
cd
545.6 (21.28)
bc
DMCPA
511.8(27.83)
bc
499.9(17.52)
bc
505.8(40.82)
cd
533.3(12.61)
bc
545.7(4.98)
bc
DMPCA 533.4(16.97) b
526.3 (27.79)
578.1(6.88) b
b
573.3(22.15)
b
574.9(23.83)
b
DMPAC 470.8(21.42) c
Numbers in parentheses are standard deviations. Means with different letters in each column are
significantly different (p < 0.05). DCMPA=decolorized, demineralized, deproteinized,
deacetylated; DMCPA= demineralized, decolorized, deproteinized, deacetylated; DMPCA=
demineralized, deproteinized, decolorized, deacetylated; DMPAC= demineralized,
deproteinized, deacetylated, decolorized; and DPMCA= deproteinized, demineralized,
decolorized, deacetylated. Commercial chitosans (Vanson75 and Sigma91).
445.3(16.82)
de
464.3(18.78)
de
469.1(10.24)
e
495.9(11.03)
cd
DPMCA
(control)
491.9(5.35) bc 467.2(2.26)
cd
514.3(12.88)
cd
488.4(15.51)
de
505.4(12.61)
cd
Vanson 75 650.5(20.48) a 608.1(14.63)
a
634.8(8.14) a 638.2(6.22) a 665.4(30.65)
a
Sigma 91 393.4(16.75) d 399.6(21.03)
e
413.4(16.86) e 370.2(9.95) f 459.1(4.38) d
In comparison with cellulose as the control, cellulose demonstrated only 314% FBC
(Rout, 2001). Cellulose and chitosan share similar chemical structure except that chitosan has –
NH2 groups instead of –OH groups in the polymetric structure.
Regardless of the type of vegetable oils, the five modified crawfish chitosan samples
showed desirable FBC range from 445.3% (with canola) to 578.1% (with corn) which is in
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