浙江农业学报 ›› 2026, Vol. 38 ›› Issue (5): 837-844.DOI: 10.3969/j.issn.1004-1524.20250351

• 作物科学 • 上一篇    下一篇

糊化度对压热改性甘薯泥淀粉特性的影响

曹颖1(), 陆宇帆2, 项超3, 吴列洪3, 沈升法3, 陆国权2, 庞林江2, 路兴花2,*()   

  1. 1 浙江农林大学 集贤学院, 浙江 杭州 310012
    2 浙江农林大学 食品与健康学院, 浙江 杭州 310012
    3 浙江省农业科学院 作物与核技术利用研究所, 浙江 杭州 310021
  • 收稿日期:2025-04-30 出版日期:2026-05-25 发布日期:2026-06-02
  • 作者简介:曹颖,主要从事薯类抗性淀粉改性研究。E-mail:15868417413@163.com
  • 通讯作者: *路兴花,E-mail:xhlu@zafu.edu.cn
  • 基金资助:
    浙江省“领雁”研发攻关计划(2022C02041);国家现代农业产业技术体系建设专项(CARS-10)

Effect of gelatinization degree on starch characteristics in pressure-heat modification sweet potato puree

CAO Ying1(), LU Yufan2, XIANG Chao3, WU Liehong3, SHEN Shengfa3, LU Guoquan2, PANG Linjiang2, LU Xinghua2,*()   

  1. 1 Jixian Honors College, Zhejiang A&F University, Hangzhou 310012, China
    2 College of Food and Health, Zhejiang A&F University, Hangzhou 310012, China
    3 Institute of Crop and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
  • Received:2025-04-30 Published:2026-05-25 Online:2026-06-02

摘要:

为进一步优化甘薯泥压热改性工艺,通过对6种不同糊化度的甘薯泥进行压热处理,探究糊化度对改性甘薯泥淀粉特性的影响。结果表明,随甘薯泥糊化度提高,压热改性后慢消化淀粉(slow-digestible starch, SDS)和抗性淀粉(resistant starch, RS)含量显著增加,抗消化性显著提升;糊化特性分析显示,改性甘薯泥黏度随糊化度的提高呈先增加后降低趋势;扫描电镜观察发现,淀粉颗粒不规则和片状程度随糊化度提高而增加。与仅直接低温老化相比,经压热改性的甘薯泥中RS和SDS含量均有不同程度提高,峰值黏度升高,最终黏度降低,淀粉颗粒变大且不规则,聚集性增强,稳定性提高。综上,甘薯泥糊化度对压热改性淀粉的消化特性、糊化特性和微观结构均有显著影响。

关键词: 甘薯泥, 压热处理, 糊化度, 抗性淀粉, 淀粉特性

Abstract:

To further optimize the pressure-heat modification process of sweet potato puree, the effect of gelatinization degree on the starch properties of modified sweet potato puree was investigated by subjecting sweet potato puree with six gelatinization degrees to pressure-heat treatment. The results showed that with the increase in gelatinization degree of sweet potato puree, the contents of slow-digestible starch (SDS) and resistant starch (RS) after pressure-heat modification significantly increased, and the anti-digestibility was significantly enhanced. Pasting property analysis revealed that the viscosity of pressure-heat modified sweet potato puree initially increased and then decreased with increasing gelatinization degree. Scanning electron microscopy observations indicated that the irregularity and flakiness of starch granules increased with higher gelatinization degree. Compared with only direct low-temperature retrogradation, the pressure-heat modified sweet potato puree exhibited increased RS and SDS contents to varying degrees, higher peak viscosity, lower final viscosity, larger and more irregular starch granules, enhanced aggregation, and improved stability. In summary, the gelatinization degree of sweet potato puree significantly influences the digestive properties, pasting properties, and microstructure of pressure-heat modified starch.

Key words: sweet potato puree, pressure-heat treatment, gelatinization degree, resistant starch, starch characteristic

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