Starch physicochemical properties of normal and waxy maize under extremely high temperatures during flowering and early grain-filling stages

IF 10.7 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers Pub Date : 2025-05-25 DOI:10.1016/j.carbpol.2025.123813

Lingling Qu , Jiayun Chen , Guanghao Li , Jian Guo , Dalei Lu

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引用次数: 0

Abstract

Extremely high temperature (HT) is a critical factor limiting maize yield and quality, particularly during the flowering and early grain-filling stages. The study aimed to explore the differential effects of HT during flowering (T1), early grain-filling (T2), and both stages (T3) on the physicochemical properties of starch in normal and waxy maize. For waxy maize, T2 increased the retrogradation percentage (%R) and the content of rapidly digestible starch, whereas T1 had no significant effect in this regard. T3 increased the starch granule size, relative crystallinity (RC), and pasting characteristics, but decreased the starch content. In contrast, for normal maize, T1 enhanced kernel weight, whereas T2 increased RC and %R significantly without affecting the pasting properties. Moreover, T1 altered gelatinization characteristics by modifying starch morphology and granule size, whereas T2 further impacted starch structure, thereby affecting quality and digestion properties. Overall, waxy maize exhibited greater sensitivity to HT than normal maize.

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正常玉米和糯玉米在开花期和灌浆期早期高温条件下的淀粉理化特性

高温是限制玉米产量和品质的关键因素，特别是在开花期和灌浆期。本研究旨在探讨高温对正常玉米和糯玉米开花（T1）、灌浆早期（T2）和灌浆前期（T3）淀粉理化性质的差异影响。对于糯玉米，T2处理提高了降解率（%R）和快速消化淀粉含量，而T1处理对其影响不显著。T3增加了淀粉的粒径、相对结晶度和糊化特性，但降低了淀粉含量。相比之下，对于普通玉米，T1处理显著提高了粒重，而T2处理显著提高了RC和%R，但不影响糊化性能。此外，T1通过改变淀粉的形态和粒度改变了糊化特性，而T2进一步影响了淀粉的结构，从而影响了质量和消化性能。总体而言，糯玉米对高温的敏感性高于普通玉米。

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来源期刊

Carbohydrate Polymers 化学-高分子科学

CiteScore

22.40

自引率

8.00%

发文量

1286

审稿时长

47 days

期刊介绍： Carbohydrate Polymers stands as a prominent journal in the glycoscience field, dedicated to exploring and harnessing the potential of polysaccharides with applications spanning bioenergy, bioplastics, biomaterials, biorefining, chemistry, drug delivery, food, health, nanotechnology, packaging, paper, pharmaceuticals, medicine, oil recovery, textiles, tissue engineering, wood, and various aspects of glycoscience. The journal emphasizes the central role of well-characterized carbohydrate polymers, highlighting their significance as the primary focus rather than a peripheral topic. Each paper must prominently feature at least one named carbohydrate polymer, evident in both citation and title, with a commitment to innovative research that advances scientific knowledge.