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烟台大学李梅团队:苹果多酚辅助降糖饮食!多酚介导的淀粉晶型重构与抗消化

  • 2026-02-15 13:37:49
烟台大学李梅团队:苹果多酚辅助降糖饮食!多酚介导的淀粉晶型重构与抗消化

Starch+ I 单纯热爱

淀粉の最新工作解读

用最精简的文字,完成三个目的

  1. 分享认真”的作品,科普淀粉知识;

  2. 提供课题idea、基金思路、组会素材

  3. 挖掘淀粉高值化开发的潜在工程策略

第一作者

Li Yongxing 

多酚介导A、B、C型淀粉向V型复合物的结构重组及其消化性调控

Food Research International  IF8.0

https://doi.org/10.1016/j.foodres.2026.118394

通讯作者 I 李梅 - 烟台大学

食品科学与营养学方面

内容概述

探究了年轻苹果多酚A型(玉米)B型(马铃薯)C型(豌豆)淀粉在高压灭菌条件下的相互作用,通过结构表征与体外消化模拟,阐明多酚介导的淀粉结构重组机制及其对消化性能的调控作用。

!

科普解读

年轻苹果中富含的多酚能与常见淀粉结合,形成不易消化的复合物,显著降低血糖上升速度,为开发健康主食提供新思路,尤其利于糖尿病饮食管理。

科学问题

不同晶型淀粉与多酚复合物的结构重组如何影响其消化特性?

One-line “技术路线”

通过高压灭菌制备淀粉-多酚复合物,结合多尺度结构表征(XRD、FTIR、NMR、SEM等)与体外消化分析,比较三种晶型淀粉的复合行为与消化特性。

亮点结论

1. 晶型重组:多酚引导淀粉由A/B/C型向V型复合物转变,形成(A+V)(B+V)混合晶型。

2. 消化性能降低:复合物中抗性淀粉含量提升超10%,预估血糖指数(eGI)降至55以下B型淀粉效果最佳。

3. 晶型依赖性明显:A型淀粉负载量最高,B型淀粉降血糖效果最优,C型介于两者之间。

4. 有序性变化:短程有序度降低,长程结晶度提高,尤其A型淀粉结晶度最高。

5. 多尺度调控:从分子氢键、疏水作用到颗粒形态、结晶度,多酚全面调控淀粉结构与功能。

灵感启发

· 工业利用年轻苹果副产物提取多酚,开发低升糖指数功能性主食(如面条、饼干),优化淀粉基食品加工工艺,提升营养品质。

· 学术多酚组分(如酚酸、黄酮)与淀粉结构的特异性识别机制;不局限于营养,探究复合物对食品口感、黏弹性及加工稳定性的影响。

Graphical Abstract

Figure 1 直链淀粉与碘结合能力及核磁谱图

Figure 2 红外光谱与指纹区结构有序度

Figure 3 拉曼光谱与X射线衍射图谱

Figure 4 扫描电镜形貌

Figure 5 荧光显微镜分布

Figure 6粒径分布与溶胀溶解性

Figure 7 体外消化性与动力学

Figure 8 结构-性质关联与抗消化机制

Table 1 载量、包封率与短程有序度

Table 2 颜色性质

Table 3 消化参数与血糖指数

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  1. CONNECT:[ UseTime:0.000864s ] mysql:host=127.0.0.1;port=3306;dbname=g460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001331s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000692s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000681s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001348s ]
  6. SELECT * FROM `set` [ RunTime:0.000607s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001540s ]
  8. SELECT * FROM `article` WHERE `id` = 461505 LIMIT 1 [ RunTime:0.001373s ]
  9. UPDATE `article` SET `lasttime` = 1772322158 WHERE `id` = 461505 [ RunTime:0.001887s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000609s ]
  11. SELECT * FROM `article` WHERE `id` < 461505 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000982s ]
  12. SELECT * FROM `article` WHERE `id` > 461505 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001500s ]
  13. SELECT * FROM `article` WHERE `id` < 461505 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001524s ]
  14. SELECT * FROM `article` WHERE `id` < 461505 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001578s ]
  15. SELECT * FROM `article` WHERE `id` < 461505 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001787s ]
0.183979s