Journal
FOODS
Volume 10, Issue 5, Pages -Publisher
MDPI
DOI: 10.3390/foods10051115
Keywords
potato flour; freeze drying; ethanol drying; oven drying; fresh noodles; quality characteristics
Categories
Funding
- National Natural Science Foundation of China [31871796]
- Natural Science Foundation of Tianjin Municipal Science and Technology Commission [17JCJQJC45600]
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The study found that different drying methods have various effects on the properties of potato flour and the quality of fresh noodles, with freeze drying causing pores and channels on starch granules and disrupting the structure.
This work investigated the impact of three drying methods on structural and functional properties of potato flour (PF), as well as the quality characteristics of fresh noodles made from wheat-potato flours. The results indicated that ethanol drying (ED) and oven drying (OD) had small effects on the properties of starch in potato flour, however, freeze drying (FD) caused some pores and channels on the starch granules and disruption of the long- and short-range ordered structure of starch. The maximum addition of potato flour in fresh noodles was 40% for FD-PF and 50% for both ED-PF and OD-PF. With increasing addition of potato flour in noodles, the L* (lightness) values of noodles decreased gradually, while the a* (redness) and the b* (yellowness) values, as well as the hardness and springiness values of fresh potato noodles increased. This study clearly showed that drying methods have different effects on the properties of potato flour, and in turn the quality of fresh noodles made with potato flour.
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