Journal of Agricultural Science and Technology
Journal of Agricultural Science and Technology
JAST
Agriculture
http://jast.modares.ac.ir
1
admin
1680-7073
2345-3737
10.22034/jast
en
jalali
1392
4
1
gregorian
2013
7
1
15
4
online
1
fulltext
en
Biotechnological Production of Xylitol from Banana Peel and Its Impact on Physicochemical Properties of Rusks
Xylitol is the first rare sugar that has global market due to having beneficial health properties and being an alternative to current conventional sweeteners<em>. </em>Biotechnological production of xylitol by <em>Candida tropicalis</em> DSM 7524 as an alternative to chemical method for the fermentation of xylose to xylitol was studied. Banana peel was used as a substrate for xylitol production. Hydrolysate was detoxified by neutralization, activated charcoal treatment and vacuum evaporation. Effect of pH was tested for <em>C. tropicalis</em> at three different levels and pH value of 2.5 was found to be the best; producing 24.7 g L<sup>-1</sup> xylitol. Rusks were prepared by replacing sucrose with xylitol at different levels. Physicochemical analysis of rusks at different intervals of storage i.e. 0, 10, 20 and 30 days was carried out. Hardness decreased significantly (P< 0.05) from the treatment having 100% sucrose(4,950.6 g) to 100% xylitol (3,090.3 g) upon replacing sucrose with xylitol, while fracturability value increased from 71.90 to 74.26 mm for the treatment containing 100% xylitol.Color value and water activity of rusks increased significantly with the replacement of sucrose with xylitol. The increase in moisture content and decreasing trend in other parameters with storage were observed in rusks. Xylitol has low calorific value as compared to sucrose so it can be incorporated into dietetic foods which may help in controlling sugar level in diabetic patients.
Banana peel,Biotechnology,Rusk,Texture,Xylitol
747
756
http://jast.modares.ac.ir/browse.php?a_code=A-23-11598-32&slc_lang=en&sid=23
S.
Rehman
S.
Rehman
100319475328460046624
100319475328460046624
No
National Institute of Food Science and Technology, University of Agriculture, Faisalabad, Pakistan.
National Institute of Food Science and Technology, University of Agriculture, Faisalabad, Pakistan.
M.
Nadeem
M.
Nadeem
100319475328460046623
100319475328460046623
Yes
Institute of Food Science and Nutrition, University of Sargodha, Sargodha, Pakistan.
Institute of Food Science and Nutrition, University of Sargodha, Sargodha, Pakistan.
F.
Ahmad
F.
Ahmad
100319475328460046625
100319475328460046625
No
National Institute of Food Science and Technology, University of Agriculture, Faisalabad, Pakistan.
National Institute of Food Science and Technology, University of Agriculture, Faisalabad, Pakistan.
Z.
Mushtaq
Z.
Mushtaq
100319475328460046626
100319475328460046626
No
National Institute of Food Science and Technology, University of Agriculture, Faisalabad, Pakistan.
National Institute of Food Science and Technology, University of Agriculture, Faisalabad, Pakistan.