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
1390
9
1
gregorian
2011
12
1
13
7
online
1
fulltext
en
Evaluation of the Effect of Fermentation, Hydrothermal Treatment, Soda, and Table Salt on Phytase Activity and Phytate Content of Three Iranian Wheat Cultivars
This study was carried out to determine the effect of fermentation, hydrothermal treatment, soda (Na2CO3), and table salt (NaCl) addition on the extent of phytase activity and phytate degradation in three Iranian wheat cultivars, namely, Mahdavi, Ghods, and Roshan. The samples were milled to three different extraction rates, i.e. whole, 85%, and 75% flours and three kinds of leavening procedure (fermented, soda, and control), and four NaCl percentages (0.0, 0.5, 1.0, 1.5%) were used for preparing dough in three replications. To evaluate the effect of heat treatment on phytic acid breakdown, baking was also done. The results indicated that among the wheat varieties, Mahdavi had the highest level of phytase activity and phytic acid content followed by Ghods and Roshan; in which‚ most of the phytate was concentrated in bran fractions. Fermentation (1% yeast at 37ºC for 3 hours), hydrothermal treatment (pH 4.8 at 55ºC for 12 hours) and salt addition (0 to 1.5%) to the dough samples resulted in an increased phytase activity, whereas soda addition (1%) decreased the enzyme activity. Heat treatment reduced phytic acid content significantly.
Phytase,Fermentation,Hydrothermal,Phytate,Soda,Table salt
1065
1075
http://jast.modares.ac.ir/browse.php?a_code=A-10-1000-3780&slc_lang=en&sid=23
M.
Sedaghati
M.
Sedaghati
100319475328460045899
100319475328460045899
No
Department of Food Science, Isfahan University of Technology, P. O. Box: 84156-83111, Isfahan, Islamic Republic of Iran.
Department of Food Science, Isfahan University of Technology, P. O. Box: 84156-83111, Isfahan, Islamic Republic of Iran.
M.
Kadivar
M.
Kadivar
100319475328460045900
100319475328460045900
Yes
Department of Food Science, College of Agriculture, Isfahan University of Technology, P. O. Box: 84156-83111, Isfahan, Islamic Republic of Iran.
Department of Food Science, College of Agriculture, Isfahan University of Technology, P. O. Box: 84156-83111, Isfahan, Islamic Republic of Iran.
M
Shahedi
M
Shahedi
100319475328460045901
100319475328460045901
No
Department of Food Science, Isfahan University of Technology, P. O. Box: 84156-83111, Isfahan, Islamic Republic of Iran.
Department of Food Science, Isfahan University of Technology, P. O. Box: 84156-83111, Isfahan, Islamic Republic of Iran.
N.
Soltanizadeh
N.
Soltanizadeh
100319475328460045902
100319475328460045902
No
Department of Food Science, Isfahan University of Technology, P. O. Box: 84156-83111, Isfahan, Islamic Republic of Iran.
Department of Food Science, Isfahan University of Technology, P. O. Box: 84156-83111, Isfahan, Islamic Republic of Iran.