The insoluble amylose con-tent of F. thunbergii flour increased from 4.57% to 10.93% for sun drying and microwave drying. Microwave drying may facilitate additional interaction between amylose–amylose and/or amylose–amylopectin chains. The decrease in soluble amylose content can be attributed to a strengthening of the molecular bonds. Consequently, microwave drying led to an increased interaction between amylose molecules, amylopectin molecules, and lipid molecules (forming a more stable structure), which contributed to the change in soluble amylose and insoluble amylose.
The WBC of the F. thunbergii flours showed small differences for different drying methods, which ranged from 144.09%for hot air drying at 60◦C to 192.28% for microwave drying, and WBC and insoluble amylose content were found to be positively correlated (r = 0.730, p ≤ 0.05, data not shown).These findings may be attributed to the microwave-induced structural alterations that permit the entry of water into the granule and the unhindered reaction between starch and water. The microwave-dried sample can be added to batter systems to improve the volume and texture of fried products.
The insoluble amylose con-tent of F. thunbergii flour increased from 4.57% to 10.93% for sun drying and microwave drying. Microwave drying may facilitate additional interaction between amylose–amylose and/or amylose–amylopectin chains. The decrease in soluble amylose content can be attributed to a strengthening of the molecular bonds. Consequently, microwave drying led to an increased interaction between amylose molecules, amylopectin molecules, and lipid molecules (forming a more stable structure), which contributed to the change in soluble amylose and insoluble amylose.The WBC of the F. thunbergii flours showed small differences for different drying methods, which ranged from 144.09%for hot air drying at 60◦C to 192.28% for microwave drying, and WBC and insoluble amylose content were found to be positively correlated (r = 0.730, p ≤ 0.05, data not shown).These findings may be attributed to the microwave-induced structural alterations that permit the entry of water into the granule and the unhindered reaction between starch and water. The microwave-dried sample can be added to batter systems to improve the volume and texture of fried products.
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