title: Energy value evaluation of hydrogenated resistant maltodextrin.
abstract: Hydrogenated resistant maltodextrin (H-RMD) is a dietary fiber whose energy value has not previously been reported. We evaluated the energy value of H-RMD. We conducted an in vitro digestion test, in vivo blood glucose measurement after ingestion, in vitro fermentability test, excretion test by rats and indirect calorimetry combined with breath hydrogen measurement for humans. H-RMD was hydrolyzed in vitro in a very small amount by human salivary amylase and by the rat small intestinal mucosal enzyme. Ingestion of H-RMD did not increase the blood glucose level of human subjects. An examination of in vitro fermentability suggested that H-RMD was fermented by several enterobacteria. Oral administration of H-RMD showed a saccharide excretion ratio of 42% by rats. A combination of indirect calorimetry and breath hydrogen measurement evaluated the metabolizable energy of H-RMD as 1.1 kcal/g in humans. We concluded from these results that H-RMD was not digested or absorbed in the upper gastrointestinal tract and was fermented in the colon to produce short-chain fatty acids which provided a lower amount of energy than that of resistant maltodextrin.
authors.affiliation: Research Laboratory, Matsutani Chemical Industry Co., Ltd., Kita-Itami, Itami, Japan. hiroyuki-tagami@matsutani.co.jp
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Tagami
authors.forename: Yuka
authors.initials: Y
authors.lastname: Kishimoto
authors.forename: Shoko
authors.initials: S
authors.lastname: Miyazato
authors.forename: Machiko
authors.initials: M
authors.lastname: Kitagawa
authors.forename: Noriko
authors.initials: N
authors.lastname: Hayashi
authors.forename: Yuko
authors.initials: Y
authors.lastname: Yoshikawa
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Oga
authors.forename: Takako
authors.initials: T
authors.lastname: Yamada
authors.forename: Toyohide
authors.initials: T
authors.lastname: Nishibata
mesh_terms: D000042:Absorption; D000328:Adult; D000818:Animals; D001786:Blood Glucose / Q000378:metabolism; D001944:Breath Tests; D004063:Digestion; D004435:Eating; D004734:Energy Metabolism / Q000187:drug effects; D004754:Enterobacter / Q000378:metabolism; D005243:Feces / Q000737:chemistry; D005285:Fermentation; D006801:Humans; D006865:Hydrogenation; D008297:Male; D011134:Polysaccharides / Q000008:administration & dosage / Q000378:metabolism* / Q000493:pharmacokinetics / Q000494:pharmacology; D051381:Rats
chemical_list: D001786:Blood Glucose; D011134:Polysaccharides; C008315:maltodextrin