食品科学

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不同品种小扁豆淀粉的理化特性和体外消化特性

汪诗茗1,林锐康1,周航1,马智昊1,沈群2,赵卿宇1   

  1. 1. 中国农业大学
    2. 中国农业大学食品科学与营养工程学院
  • 收稿日期:2025-10-18 修回日期:2025-12-10 出版日期:2026-02-03 发布日期:2026-02-03
  • 通讯作者: 赵卿宇
  • 基金资助:
    国家自然科学基金青年基金项目

Research on the physicochemical properties and functional characteristics of different varieties of lentil starch

1, 1, 1, 1,Qun ShenQing-Yu ZHAO   

  • Received:2025-10-18 Revised:2025-12-10 Online:2026-02-03 Published:2026-02-03
  • Contact: Qing-Yu ZHAO

摘要: 本研究系统分析了5种不同来源小扁豆(山西小扁豆、会宁-1小扁豆、会宁-2小扁豆、环县小扁豆及安定小扁豆)淀粉的理化与功能特性差异。结果表明,品种间淀粉组成(直链淀粉含量12.84~20.35 g/100g)、溶解度(4.16%~6.67%)、膨润力(9.32%~11.25%)及热特性(糊化温度61.71~64.12 ℃)存在显著差异,其中山西小扁豆因高直链淀粉含量(19.85 g/100g)表现出最高糊化温度(To=64.12 ℃)与最低膨润力(9.32%),而会宁-1小扁豆(支链淀粉82.68 g/100g)则呈现最高峰值粘度(6521.33 cP)与膨润力(11.25%)。凝胶质构特性方面,山西小扁豆凝胶硬度最大(2843.5 g)、弹性最佳,会宁-2小扁豆回复性最高(0.644)但硬度最低(2198.1 g)。快消化淀粉含量亦存在品种特异性,抗性淀粉(RS)含量介于12.45%(山西小扁豆)至17.57%(会宁-2小扁豆),可作为RS的优良来源,其较高的RS含量预示着其在调节血糖与促进肠道健康方面具有潜在应用价值。主成分分析揭示了淀粉组成、糊化特性及质构特性为区分不同品种小扁豆淀粉的关键指标。研究证实,小扁豆直链淀粉含量主导热稳定性与凝胶强度,支链淀粉影响峰值粘度与膨胀性能,这为不同品种小扁豆在凝胶制品、增稠剂及快速加工食品中的定向应用提供了理论依据。

关键词: 小扁豆淀粉, 理化特性, 糊化特性, 凝胶质构特性, 消化特性

Abstract: This study systematically analyzed the differences in physicochemical and functional properties of starches from five lentil varieties (Shanxi lentil, Huining-1 lentil, Huining-2 lentil, Huanxian lentil, and Anding lentil). The results revealed significant variations in starch composition (amylose content: 12.84~20.35 g/100g), solubility (4.16%~6.67%), swelling power (9.32%~11.25%), and thermal properties (gelatinization temperature: 61.71~64.12 °C) among the varieties. Specifically, Shanxi lentil, with its high amylose content (19.85 g/100g), exhibited the highest gelatinization onset temperature (To = 64.12 °C) and the lowest swelling power (9.32%). In contrast, Huining-1 lentil, characterized by a high amylopectin content (82.68 g/100g), showed the highest peak viscosity (6521.33 cP) and swelling power (11.25%). Regarding gel textural properties, Shanxi lentil starch gel demonstrated the highest hardness (2843.5 g) and the best elasticity, while Huining-2 lentil starch gel had the highest resilience (0.644) but the lowest hardness (2198.1 g). The rapidly digestible starch content also varied among varieties. The resistant starch (RS) content ranged from 12.45% (Shanxi lentil) to 17.57% (Huining-2 lentil), indicating that these lentils are excellent sources of RS. The high RS content suggests their potential application in regulating blood glucose levels and promoting intestinal health. Principal component analysis identified starch composition, pasting properties, and textural characteristics as key indicators for distinguishing starches from different lentil varieties. This study confirms that amylose content primarily governs thermal stability and gel strength, while amylopectin content influences peak viscosity and swelling behavior. These findings provide a theoretical basis for the targeted application of different lentil varieties in gel products, thickeners, and quick-processed foods.

Key words: lentil starches, physicochemical properties, gelatinization properties, gel texture properties, digestive properties

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