当前位置:首页>农业>IF=5.1!山东省农业科学院作物研究所:糯玉米淀粉与普通玉米淀粉制备重结晶抗性淀粉(RS3)的差异及机理

IF=5.1!山东省农业科学院作物研究所:糯玉米淀粉与普通玉米淀粉制备重结晶抗性淀粉(RS3)的差异及机理

  • 2026-06-23 02:08:11
IF=5.1!山东省农业科学院作物研究所:糯玉米淀粉与普通玉米淀粉制备重结晶抗性淀粉(RS3)的差异及机理

图文来源:作者团队

糯玉米淀粉与普通玉米淀粉制备重结晶抗性淀粉(RS3)的差异及机理

山东省农业科学院作物研究所:Qing Su(第一作者),龚魁杰研究员(通讯作者)等在食品领域中科院TOP期刊《Foods》(IF:5.1)上发表了题为“Differences and Mechanism of Waxy Corn Starch and Normal Corn Starch in the Preparation of Recrystallized Resistant Starch (RS3)”的研究论文。

01
研究背景

抗性淀粉(RS)作为功能性食品添加剂,具有控糖、降脂、调节肠道菌群等功效,其制备依赖淀粉降解与可控重结晶,含量受多重因素调控,但相关影响机制仍存争议。直链淀粉的作用是核心争议点之一:多数研究证实直链淀粉含量与RS含量正相关,高直链玉米淀粉可制备高含量RS,但也有研究发现蜡质淀粉(低直链)能产出高RS,推测短链直链淀粉晶体的作用被忽视。

晶体特性是关键影响因素:制备条件决定晶型,A型晶体因结构致密抗消化性优于B型,且部分研究认为晶型影响比链长更显著。结晶度与RS含量无绝对相关性,非结晶区V型重结晶的消化特性会干扰二者关联。支链淀粉链长分布同样重要,低分散度的蜡质淀粉制备的RS含量更高。此外,微观结构的作用不可忽视,不同原料制备的RS3形貌差异显著(球晶聚集态vs不规则凝胶块),致密表面导致酶解仅能从表层启动,但该领域研究仍不充分。

02
研究结论

本研究主要分析了RS-WCS和RS-NC的直链淀粉含量、短程有序度、结晶度、分子量分布和微观结构及其对RS3含量的影响。结果表明RS-WCS的RS含量高于RS-NCS。 RS-WCS和RS-NCS直链淀粉含量均在50%左右,酶解彻底,RS含量与短链直链淀粉含量成正比。RS-WCS和RS-NCS的化学结构保持不变,RS-WCS呈现B型结构,RS-NCS呈现B+V型结构。RS-WCS的IR1047/1022(0.934)和结晶度(42.31%)均高于RS-NCS。此外,RS-WCS中B2(DP 25–36)和B3(DP36–76) 链的含量高于RS-NCS。相关分析显示,RS含量与直链淀粉含量、IR1047/1022和B2+B3含量呈正相关,但相关性并不显着。这种相关性提供了一种识别和筛选具有不同RS含量的RS3的方法。 SEM分析表明,RS-WCS颗粒是小球晶聚集体,从表面向内进行水解,而RS-NCS颗粒是凝胶块,由于水解通道的存在,内部和表面同时水解。

总之,短链支链淀粉含量、有序度、结晶度、长链含量(DP>25)和微观结构对RS-WCS和RS-NCS的协同作用,为开发高RS含量的抗性淀粉提供了理论基础

03
创新点

为厘清各因素的调控作用与水解机制,本研究选取蜡质玉米淀粉和普通玉米淀粉为原料,制备高含量RS,系统分析直链淀粉含量、晶体结构、分子有序度、双螺旋占比、支链链长分布及微观形貌等关键指标,明确各变量对RS含量的影响权重,并从微观视角揭示水解差异的本质。研究结果将填补RS制备中结构-功能关系的认知空白,为筛选适宜原料、优化工艺参数、定向制备高活性RS提供科学依据,推动其在功能性食品中的应用。

04
图文赏析

原文链接:

https://doi.org/10.3390/foods13132039

如需原文文章,可以扫描下方二维码添加科研小助领取

翻译:豆晴楠

编辑:科研小助

审核:杨静

专家指导:张康逸

供稿团队:小麦绿色精深加工与功能性食品创制创新团队

免责声明:本平台推送文章仅供学术交流,本平台不主张原文的版权,如有侵权,请联系删除。文献解读如有疏漏之处,我们深表歉意,请作者团队及时联系我们,我们会在第一时间进行修改或撤稿重发,感谢您的谅解!

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  1. CONNECT:[ UseTime:0.001125s ] mysql:host=127.0.0.1;port=3306;dbname=h_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001352s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000702s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.001774s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001484s ]
  6. SELECT * FROM `set` [ RunTime:0.000608s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001515s ]
  8. SELECT * FROM `article` WHERE `id` = 534593 LIMIT 1 [ RunTime:0.007680s ]
  9. UPDATE `article` SET `lasttime` = 1782153865 WHERE `id` = 534593 [ RunTime:0.013905s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000683s ]
  11. SELECT * FROM `article` WHERE `id` < 534593 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001217s ]
  12. SELECT * FROM `article` WHERE `id` > 534593 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.005789s ]
  13. SELECT * FROM `article` WHERE `id` < 534593 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.042096s ]
  14. SELECT * FROM `article` WHERE `id` < 534593 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.021986s ]
  15. SELECT * FROM `article` WHERE `id` < 534593 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.013502s ]
0.261392s