Abstract
In the present study coarse fraction (CF), medium fine fraction (MFF) and fine fraction (FF) were separated from flours milled from medium-hard and extraordinarily soft wheat varieties and were evaluated for various quality characteristics. Grain hardness of medium-hard and extraordinarily soft wheat varieties varied from 77 to 80 and 17 to 18, respectively. Ash and protein content was the highest for FF and the lowest for CF. Varieties with greater hardness produced higher CF and lower of FF. FF showed higher unextractable polymeric protein (UnEx-PP) and dough stability as compared to MFF and CF. FF showed lower damage starch content as related by lower Sodium SRC (NaSRC) as compared to MFF and FF. CF showed higher paste viscosities than FF and difference were greater amongst fractions from varieties with lower grain hardness. FF with greater proportion of small size particles showed greater accumulation of 98 kDa and 85 kDa PPs than CF. This study demonstrated that fractionation of flours can be employed to produce fractions with varied gluten strength required for production of various products.
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Abbreviations
- CF:
-
Coarse fraction
- MFF:
-
Medium fine fraction
- FFF:
-
Fine fraction
- GHI:
-
Grain hardness index
- MHW:
-
Medium-hard wheat
- Ex-SW:
-
Extraordinarily soft wheat
- SRC:
-
Solvent retention capacity
- NaSRC:
-
Sodium carbonate SRC
- SuSRC:
-
Sucrose SRC
- LASRC:
-
Lactic acid SRC
- WSRC:
-
Water SRC
- WG:
-
Wet gluten
- DG:
-
Dry gluten
- GI:
-
Gluten index
- PT:
-
Pasting temperature
- PV:
-
Peak viscosity
- BDV:
-
Breakdown viscosity
- FV:
-
Final viscosity
- SBV:
-
Setback viscosity
- WA:
-
Water absorption
- DDT:
-
Dough development time
- DS:
-
Dough stability
- DOS:
-
Degree of softening
- LMW-GS:
-
Low molecular weight glutenins subunits
- HMW-GS:
-
High molecular weight glutenins subunits
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Acknowledgements
NS acknowledges MOFPI, Govt. of India, for providing funds in the form of a research project. MK acknowledges UGC-BSR for providing financial assistance in the form of Fellowship.
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Katyal, M., Virdi, A.S., Singh, N. et al. Fractionation and grain hardness effect on protein profiling, pasting and rheological properties of flours from medium-hard and extraordinarily soft wheat varieties. J Food Sci Technol 55, 4661–4674 (2018). https://doi.org/10.1007/s13197-018-3433-2
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DOI: https://doi.org/10.1007/s13197-018-3433-2