There were significant differences in the moisture content between the banana chips coated with the different gums
Banana chips coated with guar gum had a higher moisture content
(5.93%) than those coated with xanthan gum (4.43%). This may be
related to the higher weight gain observed in samples coated with
guar gum as a consequence of its high swelling power and solubility
index at high viscosity (Chaisawang and Suphantharika, 2005). A reciprocal
relationship between moisture loss and oil absorption has
been reported in deep-fat-fried carrot slices coated with gums (Akdeniz
et al., 2006). Gum coatings provided effective moisture retention
of the carrot slices due to a strong interaction of hydrogen
bonds between water molecules, resulting in lower oil absorption
of the deep-fat-fried samples (Akdeniz et al., 2006). In the present
work, all banana chips had low aW values (approximately 0.25),
which is a good indicator of the potential of vacuum frying to maintain
quality and prolong the shelf life of the product (Fig. 3). It was
also observed that the lower oil content correlated with the higher
moisture content in banana chips, since oil absorption happens as
moisture is removed from the food during the frying process
There were significant differences in the moisture content between the banana chips coated with the different gums Banana chips coated with guar gum had a higher moisture content(5.93%) than those coated with xanthan gum (4.43%). This may berelated to the higher weight gain observed in samples coated withguar gum as a consequence of its high swelling power and solubilityindex at high viscosity (Chaisawang and Suphantharika, 2005). A reciprocalrelationship between moisture loss and oil absorption hasbeen reported in deep-fat-fried carrot slices coated with gums (Akdenizet al., 2006). Gum coatings provided effective moisture retentionof the carrot slices due to a strong interaction of hydrogenbonds between water molecules, resulting in lower oil absorptionof the deep-fat-fried samples (Akdeniz et al., 2006). In the presentwork, all banana chips had low aW values (approximately 0.25),which is a good indicator of the potential of vacuum frying to maintainquality and prolong the shelf life of the product (Fig. 3). It wasalso observed that the lower oil content correlated with the highermoisture content in banana chips, since oil absorption happens asmoisture is removed from the food during the frying process
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