Effects of ultrasound-assisted enzymolysis on the physicochemical properties and structure of arrowhead-derived resistant starch. (July 2021)

• Record Type: Journal Article
• Authors: Liang, Qiufang; Chen, Xinxiang; Ren, Xiaofeng; Yang, Xiaoming; Raza, Husnain; Ma, Haile
• Is Part Of: Lebensmittel-Wissenschaft + Technologie =. Volume 147(2021)
• Publication Date: 2021-07
• Subjects: Type 3 resistant starch -- Ultrasound -- Enzymolysis debranching -- Physicochemical properties -- Structure; Food industry and trade -- Periodicals; Food -- Composition -- Periodicals; Microbiology -- Periodicals; Nutrition -- Periodicals; 664.005
• DOI: 10.1016/j.lwt.2021.111616
• Languages: English
• ISSNs: 0023-6438

Abstract

Abstract: The effects of ultrasound-assisted enzymolysis on the physicochemical properties and structure of arrowhead-derived type 3 resistant starch (RS3) were investigated. Compared with the traditional enzymolysis, ultrasonic treatment significantly ( p < 0.05) increased the resistant starch yield by 34.46%. Enzymolysis reaction kinetics revealed that ultrasound-assisted enzymolysis remarkably increased the enzymolysis rate and amylose content. After ultrasound treatment, RS3 displayed higher solubility, swelling power, transparency, and water absorption capacity. The results of particle-size distribution, differential scanning calorimetry, X-ray diffraction, Fourier transform-infrared spectroscopy, and scanning electron microscopy analyses demonstrated that RS3 prepared by ultrasound-assisted enzymolysis exhibited a larger granule size, higher crystallinity, a more ordered and stable double helix structure with increased surface roughness compared to those of RS3 prepared by traditional enzymolysis. These findings provide a theoretical background for the preparation of RS3 using an ultrasound-assisted enzymatic method and will promote the development of ultrasound chemistry in starch science and technology. Highlights: Ultrasound significantly ( p < 0.05) increased arrowhead resistant starch 3 (RS3) yield. The introduction of ultrasound changed the physicochemical properties of RS3. The introduction of ultrasound changed the structural characteristics of RS3. Ultrasound-assisted pullulanase enzymolysis can be well used to prepare arrowhead RS3.