School of Food and Biological Engineering, Jiangsu University, 212013 Zhenjiang, Jiangsu, China; Institute of Food Physical Processing, Jiangsu University, 212013 Zhenjiang, Jiangsu, China.
School of Food and Biological Engineering, Jiangsu University, 212013 Zhenjiang, Jiangsu, China.
Ultrason Sonochem. 2023 Aug;98:106515. doi: 10.1016/j.ultsonch.2023.106515. Epub 2023 Jul 4.
As the main source of energy for human beings, starch is widely present in people's daily diet. However, due to its high content of rapidly digestive starch, it can cause a rapid increase in blood glucose after consumption, which is harmful to the human body. In the current study, the complexes made from edible rose polyphenols (ERPs) and three starches (corn, potato and pea) with different typical crystalline were prepared separately by multi-frequency power ultrasound (MFPU). The MFPU includes single-frequency modes of 40, 60 kHz and dual-frequency of 40 and 60 kHz in sequential and simultaneous mode. The results of the amount of complexes showed that ultrasound could promote the formation of polyphenol-starch complexes for all the three starches and the amount of ERPs in complexes depended on the ultrasonic parameters including treatment power, time and frequency. Infrared spectroscopy and X-ray diffraction indicated that ERPs with or without ultrasound could interact with the three starches through non-covalent bonds to form non-V-type complexes. Scanning electron microscopy showed that the shape of starches changed obviously from round/oval to angular and the surface of the starches were no longer smooth and appeared obvious pits, indicating that the ultrasonic field destroyed the structure of starches. In addition, compared to the control group, the in vitro digestibility study with 40/60 kHz sonication revealed that ultrasonic treatment greatly improved the digestive properties of the polyphenol-starch complexes by significantly increasing the content of resistant starch (20.31%, 17.27% and 14.98%) in the three starches. Furthermore, the viscosity properties of the three starches were all decreased after ERPs addition and the effect was enhanced by ultrasound both for single- and dual-frequency. In conclusion, ultrasound can be used as an effective method for preparing ERPs-starch complexes to develop high value-added products and low glycemic index (GI) foods.
作为人类的主要能量来源,淀粉广泛存在于人们的日常饮食中。然而,由于其快速消化淀粉含量高,食用后会导致血糖迅速升高,对人体健康有害。在目前的研究中,分别采用多频功率超声(MFPU)制备了由食用玫瑰多酚(ERPs)和三种具有不同典型结晶的淀粉(玉米、土豆和豌豆)组成的复合物。MFPU 包括 40、60 kHz 的单频模式以及 40 和 60 kHz 的双频模式,以顺序和同时的方式进行。复合物数量的结果表明,超声可以促进所有三种淀粉的多酚-淀粉复合物的形成,而复合物中 ERPs 的数量取决于包括处理功率、时间和频率在内的超声参数。红外光谱和 X 射线衍射表明,有无超声的 ERPs 均可通过非共价键与三种淀粉相互作用形成非 V 型复合物。扫描电子显微镜显示,淀粉的形状从圆形/椭圆形明显变为角形,淀粉的表面不再光滑,出现明显的凹坑,表明超声场破坏了淀粉的结构。此外,与对照组相比,40/60 kHz 超声处理的体外消化研究表明,超声处理通过显著增加三种淀粉中抗性淀粉的含量(20.31%、17.27%和 14.98%),极大地改善了多酚-淀粉复合物的消化性能。此外,添加 ERPs 后,三种淀粉的粘度特性均降低,且单频和双频超声均增强了这种效果。总之,超声可以作为一种有效的方法来制备 ERPs-淀粉复合物,以开发高附加值产品和低血糖指数(GI)食品。