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This study investigated the effects of high-amylose maize starch (HA) on the pasting properties, gelation behavior, and anti-digestibility of whole wheat flour (WWF) under different high-temperature cooking conditions. Composite flours were formulated by incorporating varying ratios of HA into WWF, with the protein content standardized at 13.8% through gluten adjustment. The composite flours were evaluated for farinograph properties and pasting behavior, thermal characteristics, gel hardness, and digestibility following heat treatments at 100 ℃ and 140 ℃. Results demonstrated that the addition of HA increased water absorption and reduced dough development time. Wheat starch (WHE) in WWF could gelatinize and form a gel network at temperatures below 100 ℃, while HA largely retained its granular form. At 140 ℃, HA could be fully gelatinized, with its granular structure completely destroyed. Notably, gel hardness did not show a consistent trend of reduction with increasing HA content. The enthalpy values of amylose-lipid complexes (ALC) in HA and WWF were determined to be 3.2 J/g and 1.9 J/g, respectively. However, no significant changes in enthalpy values were observed in the composite flour after the addition of HA. The RDS content of the composite flour decreased significantly compared to WWF (P<0.05) and the sum of SDS and RS content was greater than the theoretically expected value after treatments at 100 ℃ and 140 ℃. Therefore, the addition of HA could enhance the anti-digestibility of the starch of the composite system more effectively than its own anti-digestibility effect.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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