Performance of Granular Starch with Controlled Pore Size during Hydrolysis with Digestive Enzymes

被引:23
作者
Benavent-Gil, Yaiza [1 ]
Rosell, Cristina M. [1 ]
机构
[1] Inst Agrochem & Food Technol IATA CSIC, C Agustin Escardino 7, Valencia 46980, Spain
关键词
Digestibility; Enzymes; Glycemic index; Porous starch; PHYSICAL-PROPERTIES; ALPHA-AMYLASE; AMYLOLYSIS;
D O I
10.1007/s11130-017-0635-0
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Studies on porous starch have been directed to explore different industrial applications as bio-adsorbents of a variety of compounds. However, the analysis of starch digestibility is essential for food application. The objective of this study was to determine the impact of porous structure on in vitro starch digestibility. Porous starches were obtained using a range of concentrations of amyloglucosidase (AMG), alpha-amylase (AM), cyclodextrin-glycosyltransferase (CGTase) or branching enzyme (BE). Porous starches exhibited major content of digestible starch (DS) that increased with the intensity of the enzymatic treatment, and very low amount of resistant starch (RS). Porous starches behaved differently during in vitro hydrolysis depending on their enzymatic treatment. AMG was the unique treatment that increased the digestive amylolysis and estimated glycemic index, whereas AM, CGTase and BE reduced them. A significant relationship was found between the pore size and the severity of the amylolysis, suggesting that a specific pore size is required for the accessibility of the digestive amylase. Therefore, pore size in the starch surface was a limiting factor for digestion of starch granules.
引用
收藏
页码:353 / 359
页数:7
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