Comparison of different extraction methods on the physicochemical, structural properties, and in vitro hypoglycemic activity of bamboo shoot dietary fibers. (30th August 2022)

• Record Type: Journal Article
• Authors: Tang, Caidie; Wu, Liangru; Zhang, Fusheng; Kan, Jianquan; Zheng, Jiong
• Is Part Of: Food chemistry. Volume 386(2022)
• Publication Date: 2022-08-30
• Subjects: Chimonobambusa quadrangularis -- Alkali extraction -- Enzymatic extraction -- Particle size -- Diabetes; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2022.132642
• Languages: English
• ISSNs: 0308-8146

Abstract

Graphical abstract: Highlights: Bamboo shoot dietary fibers (BSDF) were extracted by AE, EE, UAEE, and SHAEE. The physicochemical and structural properties of BSDF varied with four extraction methods. BSDF extracted by SHAEE presented highest soluble DF content and swelling capacity. The relative crystallinity of BSDF was followed the order of EE > UAEE > SHAEE > AE. The in vitro hypoglycemic activity of BSDF was in the order of SHAEE > UAEE > EE > AE. Abstract: The effect of alkali extraction (AE), enzymatic extraction (EE), ultrasonic-assisted enzymatic extraction (UAEE), and shear homogeneous-assisted enzymatic extraction (SHAEE) on the physicochemical, structural properties, and in vitro hypoglycemic activity of bamboo shoot dietary fibers (BSDF) were investigated and compared. BSDF obtained by AE had the lowest protein content and crystallinity index. The lowest oil holding capacity (OHC) and highest protein content were observed in EE. BSDF generated highest OHC and glucose adsorption capacity by UAEE. SHAEE obtained the highest SDF content (17.89%), water-holding capacity (8.81 g/g), and α-amylase activity inhibition ratio (19.89%) and the smallest particle size (351.33 μm). BSDF extracted by SHAEE and UAEE presented a porous and loose structure. Furthermore, the in vitro hypoglycemic activity of the four BSDF samples generally followed the order of SHAEE > UAEE > EE > AE. Results show that SHAEE is an innovative and promising method to obtain BSDF with its excellent physicochemical and functional properties.