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Nishi K, Hirota M, Higaki S, Shiraishi S, Kudo T, Matsuda N, Ito S. Reduction of thyroid radioactive iodine exposure by oral administration of cyclic oligosaccharides. Sci Rep 2023; 13:6979. [PMID: 37117274 PMCID: PMC10147713 DOI: 10.1038/s41598-023-34254-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 04/26/2023] [Indexed: 04/30/2023] Open
Abstract
Alpha-cyclodextrin, a six D-glucose cyclic oligosaccharide, has several applications in food and pharmaceuticals, but has also been reported to retain iodine in a stable manner for 16 months. Radioactive iodine, which may cause thyroid cancer and hypofunction, must be properly managed. If the absorption of radioactive iodine is suppressed, it can be expected to lead to a reduction in thyroid exposure. This study clarified the inhibition of radioactive iodine absorption by the oral administration of α-cyclodextrin in a murine model using direct measurement of single photon emission computed tomography. The uptake of radioactive iodine into the thyroid gland in mice administered with radioactive iodine and an α-cyclodextrin solution was approximately 40% lower after 24 h. The finding that oral uptake of α-cyclodextrin has an inhibitory effect on the transfer of radioactive iodine to the thyroid gland has potential for application in many fields such as food, pharmaceuticals, nuclear emergency preparedness, and medicine.
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Affiliation(s)
- Kodai Nishi
- Department of Radioisotope Medicine, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki, Japan
| | - Masahiro Hirota
- Research Center for Supports to Advanced Sciences, Shinshu University, Matsumoto, Japan
| | - Shogo Higaki
- Isotope Science Center, The University of Tokyo, Tokyo, Japan
| | - Shinya Shiraishi
- Department of Radiology, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Takashi Kudo
- Department of Radioisotope Medicine, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki, Japan
| | - Naoki Matsuda
- Department of Radiation Biology and Protection, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki, Japan
| | - Shigeki Ito
- Department of Medical Radiation Sciences, Faculty of Life Sciences, Kumamoto University, 4-24-1 Kuhonji Chu-ku, Kumamoto City, 862-0976, Japan.
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Morita H, Kano C, Ishii C, Kagata N, Ishikawa T, Hirayama A, Uchiyama Y, Hara S, Nakamura T, Fukuda S. Bacteroides uniformis and its preferred substrate, α-cyclodextrin, enhance endurance exercise performance in mice and human males. SCIENCE ADVANCES 2023; 9:eadd2120. [PMID: 36696509 PMCID: PMC9876546 DOI: 10.1126/sciadv.add2120] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Although gut microbiota has been linked to exercise, whether alterations in the abundance of specific bacteria improve exercise performance remains ambiguous. In a cross-sectional study involving 25 male long-distance runners, we found a correlation between Bacteroides uniformis abundance in feces and the 3000-m race time. In addition, we administered flaxseed lignan or α-cyclodextrin as a test tablet to healthy, active males who regularly exercised in a randomized, double-blind, placebo-controlled study to increase B. uniformis in the gut (UMIN000033748). The results indicated that α-cyclodextrin supplementation improved human endurance exercise performance. Moreover, B. uniformis administration in mice increased swimming time to exhaustion, cecal short-chain fatty acid concentrations, and the gene expression of enzymes associated with gluconeogenesis in the liver while decreasing hepatic glycogen content. These findings indicate that B. uniformis enhances endurance exercise performance, which may be mediated by facilitating hepatic endogenous glucose production.
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Affiliation(s)
- Hiroto Morita
- Core Technology Laboratories, Asahi Quality & Innovations Ltd., 1-1-21, Midori, Moriya, Ibaraki 302-0106, Japan
| | - Chie Kano
- Core Technology Laboratories, Asahi Quality & Innovations Ltd., 1-1-21, Midori, Moriya, Ibaraki 302-0106, Japan
| | - Chiharu Ishii
- Institute for Advanced Biosciences, Keio University, 246-2 Mizukami, Kakuganji, Tsuruoka-shi, Yamagata 997-0052, Japan
| | - Noriko Kagata
- Institute for Advanced Biosciences, Keio University, 246-2 Mizukami, Kakuganji, Tsuruoka-shi, Yamagata 997-0052, Japan
| | - Takamasa Ishikawa
- Institute for Advanced Biosciences, Keio University, 246-2 Mizukami, Kakuganji, Tsuruoka-shi, Yamagata 997-0052, Japan
| | - Akiyoshi Hirayama
- Institute for Advanced Biosciences, Keio University, 246-2 Mizukami, Kakuganji, Tsuruoka-shi, Yamagata 997-0052, Japan
| | - Yoshihide Uchiyama
- Aoyama Gakuin University Track and Field Club, Aoyama Gakuin University, 4-4-25 Shibuya, Shibuya-ku, Tokyo 150-8366, Japan
- School of International Politics, Economics and Communication, Aoyama Gakuin University, 4-4-25 Shibuya, Shibuya-ku, Tokyo 150-8366, Japan
| | - Susumu Hara
- Aoyama Gakuin University Track and Field Club, Aoyama Gakuin University, 4-4-25 Shibuya, Shibuya-ku, Tokyo 150-8366, Japan
- School of Global Studies and Collaboration, Aoyama Gakuin University, 4-4-25 Shibuya, Shibuya-ku, Tokyo 150-8366, Japan
| | - Teppei Nakamura
- Core Technology Laboratories, Asahi Quality & Innovations Ltd., 1-1-21, Midori, Moriya, Ibaraki 302-0106, Japan
| | - Shinji Fukuda
- Institute for Advanced Biosciences, Keio University, 246-2 Mizukami, Kakuganji, Tsuruoka-shi, Yamagata 997-0052, Japan
- Gut Environmental Design Group, Kanagawa Institute of Industrial Science and Technology, 3-25-13 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa 210-0821, Japan
- Transborder Medical Research Center, University of Tsukuba, 1-1-1 Tennodai, Tsukuba-shi, Ibaraki 305-8575, Japan
- Laboratory for Regenerative Microbiology, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
- Corresponding author.
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Muacevic A, Adler JR. The Effect of Alpha-Cyclodextrin on Postprandial Glucose Excursions: a Systematic Meta-Analysis. Cureus 2022; 14:e31160. [PMCID: PMC9637372 DOI: 10.7759/cureus.31160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/05/2022] [Indexed: 11/09/2022] Open
Abstract
Alpha-cyclodextrin (αCD) is a bacterial product that is widely used as a food ingredient. In the European Union (EU), αCD is regulated as a dietary fiber with an authorized health claim “for contributing to the reduction of postprandial glycemic responses.” In the US, αCD is generally recognized as save (GRAS), but on April 25, 2022, the U.S. Food and Drug Administration (FDA) rejected the inclusion of αCD in the list of dietary fibers because “the strength of the scientific evidence does not support a finding of a beneficial effect of αCD on postprandial blood glucose …” To evaluate the strength of this scientific evidence, this meta-analysis reviews clinical trials conducted to test the effect of αCD on the rise of blood glucose and insulin levels during three hours after consumption of a meal comprising carbohydrates, fats, and proteins. Several issues related to the standardization of the outcomes, the choice of the statistical methods in the cross-over studies conducted, and the choice of methods for the aggregation of P-values are discussed. It is concluded that the administration of αCD not only reduces the postprandial glycemic responses, but the absence of an increase in insulin levels suggests that αCD acts independently of increasing insulin production and, thus, the beneficial effect of αCD is not affected by insulin resistance.
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Mulargia LI, Lemmens E, Reyniers S, Korompokis K, Gebruers K, Warren FJ, Delcour JA. The impact of cyclodextrins on the in vitro digestion of native and gelatinised starch and starch present in a sugar-snap cookie. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Positive postprandial glycaemic and appetite-related effects of wheat breads enriched with either α-cyclodextrin or hydroxytyrosol/α-cyclodextrin inclusion complex. Eur J Nutr 2022; 61:3809-3819. [DOI: 10.1007/s00394-022-02913-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 05/11/2022] [Indexed: 12/17/2022]
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Lee E, Zhang X, Noda T, Miyamoto J, Kimura I, Tanaka T, Sakurai K, Hatano R, Miki T. Lecithin Inclusion by α-Cyclodextrin Activates SREBP2 Signaling in the Gut and Ameliorates Postprandial Hyperglycemia. Int J Mol Sci 2021; 22:ijms221910796. [PMID: 34639136 PMCID: PMC8509185 DOI: 10.3390/ijms221910796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 09/25/2021] [Accepted: 09/29/2021] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND α-cyclodextrin (α-CD) is one of the dietary fibers that may have a beneficial effect on cholesterol and/or glucose metabolism, but its efficacy and mode of action remain unclear. METHODS In the present study, we examined the anti-hyperglycemic effect of α-CD after oral loading of glucose and liquid meal in mice. RESULTS Administration of 2 g/kg α-CD suppressed hyperglycemia after glucose loading, which was associated with increased glucagon-like peptide 1 (GLP-1) secretion and enhanced hepatic glucose sequestration. By contrast, 1 g/kg α-CD similarly suppressed hyperglycemia, but without increasing secretions of GLP-1 and insulin. Furthermore, oral α-CD administration disrupts lipid micelle formation through its inclusion of lecithin in the gut luminal fluid. Importantly, prior inclusion of α-CD with lecithin in vitro nullified the anti-hyperglycemic effect of α-CD in vivo, which was associated with increased intestinal mRNA expressions of SREBP2-target genes (Ldlr, Hmgcr, Pcsk9, and Srebp2). CONCLUSIONS α-CD elicits its anti-hyperglycemic effect after glucose loading by inducing lecithin inclusion in the gut lumen and activating SREBP2, which is known to induce cholecystokinin secretion to suppress hepatic glucose production via a gut/brain/liver axis.
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Affiliation(s)
- Eunyoung Lee
- Department of Medical Physiology, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan; (E.L.); (X.Z.); (T.N.); (R.H.)
| | - Xilin Zhang
- Department of Medical Physiology, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan; (E.L.); (X.Z.); (T.N.); (R.H.)
| | - Tomoe Noda
- Department of Medical Physiology, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan; (E.L.); (X.Z.); (T.N.); (R.H.)
| | - Junki Miyamoto
- Department of Applied Biological Science, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Fuchu 183-8509, Japan;
| | - Ikuo Kimura
- Laboratory of Molecular Neurobiology, Graduate School of Biostudies, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan;
| | - Tomoaki Tanaka
- Department of Molecular Diagnosis, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan;
| | - Kenichi Sakurai
- Center for Preventive Medical Sciences, Chiba University, Chiba 263-8522, Japan;
| | - Ryo Hatano
- Department of Medical Physiology, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan; (E.L.); (X.Z.); (T.N.); (R.H.)
| | - Takashi Miki
- Department of Medical Physiology, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan; (E.L.); (X.Z.); (T.N.); (R.H.)
- Correspondence: ; Tel.: +81-43-226-2029
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Abstract
AbstractCyclodextrins are widely used in various fields including food industry. In this review, their role in high carbohydrate-containing, starchy foods are reviewed and discussed. Both the effects as functional ingredients affecting the structural properties of starch and as active ingredients slowing down starch digestion and, as a consequence, decreasing the glycaemic index of starchy foods are overviewed without considering the traditional applications as carriers and stabilisers of aroma and flavour, essential oils, polyunsaturated fatty acids, and other bioactive components to enrich foods, even if they are carbohydrate foods. The effect on starch metabolism is explained by the structural transformations caused by cyclodextrins on starch amylose and amylopectin. Several examples are shown how the technological and sensorial properties of bread, rice products, pasta, and other starchy foods are modified by cyclodextrin supplementation, and how the digestibility is changed resulting in reduced glycaemic and insulinaemic effects.
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Affiliation(s)
- É. Fenyvesi
- CycloLab Cyclodextrin Research and Development Laboratory Ltd., Illatos str. 7, 1097 Budapest, Hungary
| | - L. Szente
- CycloLab Cyclodextrin Research and Development Laboratory Ltd., Illatos str. 7, 1097 Budapest, Hungary
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Blackcurrant ( Ribes nigrum) lowers sugar-induced postprandial glycaemia independently and in a product with fermented quinoa: a randomised crossover trial. Br J Nutr 2020; 126:708-717. [PMID: 33161904 PMCID: PMC8340457 DOI: 10.1017/s0007114520004468] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Berries rich in anthocyanins have beneficial effects on postprandial glycaemia. We investigated whether blackcurrant (75 g in a portion) independently and in a product with fermented quinoa induced similar effects on the sugar-induced postprandial glucose metabolism as observed before with 150 g of blackcurrant. Twenty-six healthy subjects (twenty-two females and four males) consumed four test products after fasting overnight in a randomised, controlled crossover design. Each test product portion contained 31 g of available carbohydrates and had similar composition of sugar components: 300 ml water with sucrose, glucose and fructose (SW; reference), blackcurrant purée with added sugars (BC), a product consisting of the blackcurrant purée and a product base with fermented quinoa (BCP) and the product base without blackcurrant (PB). Blood samples were collected at 0, 15, 30, 45, 60, 90, 120 and 180 min after eating each test product to analyse the concentrations of glucose, insulin and NEFA. In comparison with the SW, the intake of both the BC and BCP resulted in reduced glucose and insulin concentrations during the first 30 min, a more balanced decline during the first hour and improved glycaemic profile. The BCP induced more efficient effects than the BC due to the product base with fermented quinoa. A rebound of NEFA after the sugar-induced hypoglycaemic response was attenuated at the late postprandial phase by the BC and BCP. In conclusion, we showed that 75 g of blackcurrant and the product with fermented quinoa were able to lower postprandial glycaemia and insulinaemia.
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Bär A, Diamantis I, Venetz WP. Alpha-Cyclodextrin Attenuates the Glycemic and Insulinemic Impact of White Bread in Healthy Male Volunteers. Foods 2020; 9:E62. [PMID: 31936085 PMCID: PMC7023330 DOI: 10.3390/foods9010062] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 12/18/2019] [Accepted: 01/03/2020] [Indexed: 01/21/2023] Open
Abstract
The demonstration of a physiological benefit has recently become an indispensible element of the definition of dietary fibers. In the here-reported pilot study, the effect of alpha-cyclodextrin (alpha-CD) on the postprandial glycemic and insulinemic effect of starch was examined. Twelve fasted, healthy male volunteers received, on three subsequent days, a test breakfast consisting of (A) 100 g fresh white bread (providing 50 g starch) and 250 mL drinking water, (B) the same bread with a supplement of 10 g alpha-CD dissolved in the drinking water, and (C) 25 g alpha-CD dissolved in drinking water. Capillary and venous blood was sampled before the breakfast and in regular intervals for a three-hour period thereafter. Glucose was determined in capillary blood and insulin in the plasma of venous blood samples. Breakfast (A) led to a rapid rise in blood glucose and insulin. In breakfast (B), alpha-CD reduced the areas under the curve of blood glucose and insulin significantly by 59% and 57%, respectively, demonstrating that alpha-CD inhibits and thereby delays starch digestion. Treatment (C) was not associated with a rise of blood glucose. Hence, alpha-CD complies with the current definition of dietary fiber in every respect.
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10
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Jug M. Cyclodextrin-based drug delivery systems. NANOMATERIALS FOR CLINICAL APPLICATIONS 2020:29-69. [DOI: 10.1016/b978-0-12-816705-2.00002-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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11
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Gangoiti J, Corwin SF, Lamothe LM, Vafiadi C, Hamaker BR, Dijkhuizen L. Synthesis of novel α-glucans with potential health benefits through controlled glucose release in the human gastrointestinal tract. Crit Rev Food Sci Nutr 2018; 60:123-146. [PMID: 30525940 DOI: 10.1080/10408398.2018.1516621] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The glycemic carbohydrates we consume are currently viewed in an unfavorable light in both the consumer and medical research worlds. In significant part, these carbohydrates, mainly starch and sucrose, are looked upon negatively due to their rapid and abrupt glucose delivery to the body which causes a high glycemic response. However, dietary carbohydrates which are digested and release glucose in a slow manner are recognized as providing health benefits. Slow digestion of glycemic carbohydrates can be caused by several factors, including food matrix effect which impedes α-amylase access to substrate, or partial inhibition by plant secondary metabolites such as phenolic compounds. Differences in digestion rate of these carbohydrates may also be due to their specific structures (e.g. variations in degree of branching and/or glycosidic linkages present). In recent years, much has been learned about the synthesis and digestion kinetics of novel α-glucans (i.e. small oligosaccharides or larger polysaccharides based on glucose units linked in different positions by α-bonds). It is the synthesis and digestion of such structures that is the subject of this review.
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Affiliation(s)
- Joana Gangoiti
- Microbial Physiology, Groningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Groningen, The Netherlands
| | - Sarah F Corwin
- Whistler Center for Carbohydrate Research, Department of Food Science, Purdue University, West Lafayette, IN, USA
| | - Lisa M Lamothe
- Nestlé Research Center, Vers-Chez-Les-Blanc, Lausanne, Switzerland
| | | | - Bruce R Hamaker
- Whistler Center for Carbohydrate Research, Department of Food Science, Purdue University, West Lafayette, IN, USA
| | - Lubbert Dijkhuizen
- Microbial Physiology, Groningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Groningen, The Netherlands
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Lytle KA, Harteneck DA, Noble AM, Jensen MD. The Soluble Fiber α-Cyclodextrin Does Not Increase the Fecal Losses of Dietary Fat in Adults-A Double-Blind, Randomized, Placebo-Controlled, Crossover Trial. J Nutr 2018; 148:1421-1425. [PMID: 30107536 DOI: 10.1093/jn/nxy135] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 06/06/2018] [Indexed: 11/12/2022] Open
Abstract
Background α-Cyclodextrin (α-CD), a soluble dietary fiber, may improve abnormal plasma lipids and promote weight loss. Preliminary evidence suggests that it may exert these effects by binding dietary fat and reducing absorption; this has not been tested in humans. Objective The primary objective was to test whether supplemental α-CD increases fecal content of dietary lipid in humans. Methods This was a randomized, double-blind, placebo-controlled, crossover study completed at the Mayo Clinic. Eight healthy volunteers, 5 premenopausal women and 3 men ages 23-54 y with body mass index (BMI; kg/m2) 18-27, underwent 2 separate study visits with a ≥2-wk washout period. The first morning of each visit volunteers consumed a standardized breakfast (14.5% protein, 27.5% fat, 60% carbohydrate, and 1.5 kcal/mL) containing [14C]tripalmitin and [3H]triolein with 2 g of α-CD or placebo, followed by 2 g of α-CD or placebo per meal for 2 more days. Volunteers consumed 100 g/d of dietary fat. Feces were collected for 72 h after the labeled breakfast to measure radiotracer content and total fecal fat. Radiotracer appearance in plasma TGs was measured at intervals after the labeled meal as a secondary outcome. Results Virtually no 3H radiotracer, but an average of ∼20% of the 14C radiotracer was recovered in fecal lipids, with no difference between α-CD and placebo. Total fecal fat content and radiotracer appearance in postprandial plasma TGs did not differ between the α-CD and placebo treatments. Plasma appearance of 14C-TG was 37% ± 14% less (P < 0.0001) than 3H-TG. Conclusions α-CD supplementation did not increase loss of dietary lipid in stool or total fecal fat compared with placebo in healthy adults. Greater stool loss and lesser appearance in plasma TGs of tripalmitin-derived [14C] compared with triolein-derived [3H] TGs imply different metabolic handling of these 2 dietary fat tracers. This trial was registered at www.clinicaltrials.gov as NCT03002168.
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Affiliation(s)
| | | | - Anthony M Noble
- Soho Flordis International Pty Ltd, Greenwich, New South Wales, Australia
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Ishii M, Matsumoto Y, Sekimizu K. Inhibitory effects of alpha-cyclodextrin and its derivative against sucrose-induced hyperglycemia in an in vivo evaluation system. Drug Discov Ther 2018; 12:122-125. [PMID: 29998992 DOI: 10.5582/ddt.2018.01028] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Cyclodextrins (CyDs) are cyclic oligosaccharides consisting of six to eight glucose residues. Administration of α-CyD (six glucose residues) inhibits sucrose-induced hyperglycemia in humans. Here we show that oral administration of α-CyD and dimethyl α-CyD suppresses sucrose-induced hyperglycemia in an in vivo evaluation system using silkworms. On the other hand, β-CyD (seven glucose residues), γ-CyD (eight glucose residues), and their derivatives did not show the suppressive effect. These findings suggest that dimethyl α-CyD is a new inhibitor against sucrose-induced hyperglycemia and the silkworm system is useful for evaluation of suppressive activities of α-CyD derivatives against postprandial hyperglycemia.
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Affiliation(s)
| | | | - Kazuhisa Sekimizu
- Genome Pharmaceuticals Institute Co., Ltd.,Teikyo University Institute of Medical Mycology
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Fenyvesi É, Vikmon M, Szente L. Cyclodextrins in Food Technology and Human Nutrition: Benefits and Limitations. Crit Rev Food Sci Nutr 2017; 56:1981-2004. [PMID: 25764389 DOI: 10.1080/10408398.2013.809513] [Citation(s) in RCA: 110] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Cyclodextrins are tasteless, odorless, nondigestible, noncaloric, noncariogenic saccharides, which reduce the digestion of carbohydrates and lipids. They have low glycemic index and decrease the glycemic index of the food. They are either non- or only partly digestible by the enzymes of the human gastrointestinal (GI) tract and fermented by the gut microflora. Based on these properties, cyclodextrins are dietary fibers useful for controlling the body weight and blood lipid profile. They are prebiotics, improve the intestinal microflora by selective proliferation of bifidobacteria. These antiobesity and anti-diabetic effects make them bioactive food supplements and nutraceuticals. In this review, these features are evaluated for α-, β- and γ-cyclodextrins, which are the cyclodextrin variants approved by authorities for food applications. The mechanisms behind these effects are reviewed together with the applications as solubilizers, stabilizers of dietary lipids, such as unsaturated fatty acids, phytosterols, vitamins, flavonoids, carotenoids and other nutraceuticals. The recent applications of cyclodextrins for reducing unwanted components, such as trans-fats, allergens, mycotoxins, acrylamides, bitter compounds, as well as in smart active packaging of foods are also overviewed.
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Affiliation(s)
- É Fenyvesi
- a CycloLab Cyclodextrin Research & Development Laboratory, Ltd. , Budapest , Hungary
| | - M Vikmon
- a CycloLab Cyclodextrin Research & Development Laboratory, Ltd. , Budapest , Hungary
| | - L Szente
- a CycloLab Cyclodextrin Research & Development Laboratory, Ltd. , Budapest , Hungary
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15
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Amar MJA, Kaler M, Courville AB, Shamburek R, Sampson M, Remaley AT. Randomized double blind clinical trial on the effect of oral α-cyclodextrin on serum lipids. Lipids Health Dis 2016; 15:115. [PMID: 27405337 PMCID: PMC4941029 DOI: 10.1186/s12944-016-0284-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 06/30/2016] [Indexed: 01/29/2023] Open
Abstract
Background This single center, double-blinded, cross-over, placebo controlled clinical trial investigated the effect of oral α-cyclodextrin (α-CD), a soluble dietary fiber, on blood lipid and lipoprotein levels in healthy human subjects. α-CD, a cyclical polymer containing 6 glucose subunits, is currently sold as an over the counter food supplement and is also a common additive in many foods. α-CD forms a hydrophobic central cavity that binds lipids and has been shown in animal studies and in previous clinical trials to alter plasma lipid levels. Methods We screened for healthy subjects, males and females, between ages 18 to 75. Out of total 103 subjects interviewed, 75 subjects completed the study. Qualified individuals in each gender group were randomized into two groups in terms of which treatment arm they received first (placebo vs. α-CD, receiving 6 grams P.O. a day, for 12–14 weeks with a 7 day wash out between arms). The primary outcome variable, plasma total cholesterol, as well as other tests related to lipids and lipoprotein and glucose metabolism, were measured at baseline and at the end of each arm of the study. Results α-CD was well tolerated; no serious adverse events related to α-CD were observed. Approximately 8 % of the subjects on α-CD complained of minor gastrointestinal symptoms versus 3 % on placebo (p = 0.2). Small-LDL particle number decreased 10 % (p < 0.045) for subjects on α-CD versus placebo. Fasting plasma glucose (1.6 %, p < 0.05) and Insulin resistance index (11 %, p < 0.04) were also decreased when on α-CD versus placebo. Conclusion α-CD treatment appears to be safe and well tolerated in healthy individuals and showed a modest reduction in small LDL particles, and an improvement in glucose related parameters. Trial registration NCT01131299
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Affiliation(s)
- Marcelo J A Amar
- Lipoprotein Metabolism Section, Cardio-Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Building 10, Room 8 N-228, 10 Center Drive MSC 1666, Bethesda, MD, USA.
| | - Maryann Kaler
- Lipoprotein Metabolism Section, Cardio-Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Building 10, Room 8 N-228, 10 Center Drive MSC 1666, Bethesda, MD, USA
| | - Amber B Courville
- Lipoprotein Metabolism Section, Cardio-Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Building 10, Room 8 N-228, 10 Center Drive MSC 1666, Bethesda, MD, USA
| | - Robert Shamburek
- Lipoprotein Metabolism Section, Cardio-Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Building 10, Room 8 N-228, 10 Center Drive MSC 1666, Bethesda, MD, USA
| | - Maureen Sampson
- Lipoprotein Metabolism Section, Cardio-Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Building 10, Room 8 N-228, 10 Center Drive MSC 1666, Bethesda, MD, USA
| | - Alan T Remaley
- Lipoprotein Metabolism Section, Cardio-Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Building 10, Room 8 N-228, 10 Center Drive MSC 1666, Bethesda, MD, USA
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Sybuia MF, Guilhermetti M, Mangolim CS, Bazotte RB, Matioli G. Impact of Cyclodextrins on Postprandial Glycemia: Evaluation in Experimental Animal Model Using the Real-Time Continuous Glucose Monitoring System. J Med Food 2015; 18:625-30. [DOI: 10.1089/jmf.2014.0051] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
| | - Márcio Guilhermetti
- Department of Pharmacology and Therapeutic, State University of Maringá (UEM), Maringá, Paraná, Brazil
| | | | - Roberto Barbosa Bazotte
- Department of Pharmacology and Therapeutic, State University of Maringá (UEM), Maringá, Paraná, Brazil
| | - Graciette Matioli
- Department of Pharmacy, State University of Maringá (UEM), Maringá, Paraná, Brazil
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Furune T, Ikuta N, Ishida Y, Okamoto H, Nakata D, Terao K, Sakamoto N. A study on the inhibitory mechanism for cholesterol absorption by α-cyclodextrin administration. Beilstein J Org Chem 2014; 10:2827-35. [PMID: 25550749 PMCID: PMC4273249 DOI: 10.3762/bjoc.10.300] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Accepted: 11/10/2014] [Indexed: 11/23/2022] Open
Abstract
Background: Micelle formation of cholesterol with lecithin and bile salts is a key process for intestinal absorption of lipids. Some dietary fibers commonly used to reduce the lipid content in the body are thought to inhibit lipid absorption by binding to bile salts and decreasing the lipid solubility. Amongst these, α-cyclodextrin (α-CD) is reportedly one of the most powerful dietary fibers for decreasing blood cholesterol. However, it is difficult to believe that α-CD directly removes cholesterol because it has a very low affinity for cholesterol and its mechanism of action is less well understood than those of other dietary fibers. To identify this mechanism, we investigated the interaction of α-CD with lecithin and bile salts, which are essential components for the dissolution of cholesterol in the small intestine, and the effect of α-CD on micellar solubility of cholesterol. Results: α-CD was added to Fed-State Simulated Intestinal Fluid (FeSSIF), and precipitation of a white solid was observed. Analytical data showed that the precipitate was a lecithin and α-CD complex with a molar ratio of 1:4 or 1:5. The micellar solubility of cholesterol in the mixture of FeSSIF and α-CD was investigated, and found to decrease through lecithin precipitation caused by the addition of α-CD, in a dose-dependent manner. Furthermore, each of several other water-soluble dietary fibers was added to the FeSSIF, and no precipitate was generated. Conclusion: This study suggests that α-CD decreases the micellar solubility of cholesterol in the lumen of the small intestine via the precipitation of lecithin from bile salt micelles by complex formation with α-CD. It further indicates that the lecithin precipitation effect on the bile salt micelles by α-CD addition clearly differs from addition of other water-soluble dietary fibers. The decrease in micellar cholesterol solubility in the FeSSIF was the strongest with α-CD addition.
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Affiliation(s)
- Takahiro Furune
- Division of Food and Drug Evaluation Science, Graduate School of Medicine, Kobe University, 650-0017, Japan ; CycloChem Bio Co., Ltd., 650-0047, Japan
| | - Naoko Ikuta
- Division of Food and Drug Evaluation Science, Graduate School of Medicine, Kobe University, 650-0017, Japan
| | | | | | | | - Keiji Terao
- Division of Food and Drug Evaluation Science, Graduate School of Medicine, Kobe University, 650-0017, Japan ; CycloChem Bio Co., Ltd., 650-0047, Japan
| | - Norihiro Sakamoto
- Division of Food and Drug Evaluation Science, Graduate School of Medicine, Kobe University, 650-0017, Japan
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Jarosz PA, Fletcher E, Elserafy E, Artiss JD, Jen KLC. The effect of α-cyclodextrin on postprandial lipid and glycemic responses to a fat-containing meal. Metabolism 2013; 62:1443-7. [PMID: 23806736 DOI: 10.1016/j.metabol.2013.05.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Revised: 04/26/2013] [Accepted: 05/21/2013] [Indexed: 11/22/2022]
Abstract
OBJECTIVE α-Cyclodextrin (α-CD), a soluble dietary fiber derived from corn, marketed under the trade name FBCx®, has the potential to help individuals manage their weight and improve their lipid profiles. Initial studies in healthy overweight and/or obese diabetic individuals found that, in those consuming a normal to high fat diet over a 4 or 12 week period, α-CD use was associated with weight loss or maintenance and a reduction in triglyceride (TG) and cholesterol levels in hyperlipidemic individuals. Furthermore, α-CD use was associated with the positive effects of increasing insulin and leptin sensitivities. To date, the immediate post-prandial glucose and lipid responses to a fat-containing meal have not been reported. MATERIALS/METHOD This double blinded placebo controlled cross-over trial examined the effect of 2 g of α-CD taken immediately following consumption of a commercially prepared high-fat breakfast meal on the acute postprandial responses in healthy adults. RESULTS The coincidental consumption of α-CD with a fat-containing meal was associated with a significant reduction in postprandial TG responses over time when compared to placebo. When incremental area under the curve was calculated, the area under the curve associated with α-CD consumption was significantly smaller than the Placebo area (0.30±1.07 mmol/L/3 h vs. 0.98±0.88 mmol/L/3 h, p<0.05). There were no significant changes in glucose or cholesterol levels. CONCLUSION α-Cyclodextrin was shown to significantly lower acute postprandial blood triglyceride levels.
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20
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Beverages containing soluble fiber, caffeine, and green tea catechins suppress hunger and lead to less energy consumption at the next meal. Appetite 2012; 59:755-61. [PMID: 22922604 DOI: 10.1016/j.appet.2012.08.015] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Revised: 08/13/2012] [Accepted: 08/14/2012] [Indexed: 01/14/2023]
Abstract
Previous research has shown that beverages containing soluble fibers can decrease energy intake at the next meal among normal weight participants. Caffeine and green tea catechins have separately been associated with increased satiety. The present study examined the satiating power of a beverage containing soluble fiber as well as a beverage containing the same fiber, caffeine and green tea catechins. These two test beverages were evaluated in comparison to an equal calorie control beverage as well as a no-beverage control condition. All beverage preloads were presented three times for a total of 0.28-0.35MJ and 0-30g fiber. Dependent measures were appetite ratings and calorie intake at a test meal. The no-beverage condition was associated with the highest ratings for hunger and the lowest ratings for fullness when compared to the other three beverage conditions. Of the three beverage conditions, the beverage containing the fiber, green tea catechins, and caffeine created the lowest hunger and the highest fullness ratings. That condition was also associated with the lowest energy intake at the next meal. The present findings indicate that the beverage containing caffeine and green tea catechins in combination with soluble fiber decrease appetite and energy intake relative to a beverage with equal caloric content.
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Scientific Opinion on the substantiation of health claims related to alpha cyclodextrin and reduction of post prandial glycaemic responses (ID 2926, further assessment) pursuant to Article 13(1) of Regulation (EC) No 1924/2006. EFSA J 2012. [DOI: 10.2903/j.efsa.2012.2713] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Beta glucan: health benefits in obesity and metabolic syndrome. J Nutr Metab 2011; 2012:851362. [PMID: 22187640 PMCID: PMC3236515 DOI: 10.1155/2012/851362] [Citation(s) in RCA: 206] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2011] [Accepted: 10/27/2011] [Indexed: 12/27/2022] Open
Abstract
Despite the lack of international agreement regarding the definition and classification of fiber, there is established evidence on the role of dietary fibers in obesity and metabolic syndrome. Beta glucan (β-glucan) is a soluble fiber readily available from oat and barley grains that has been gaining interest due to its multiple functional and bioactive properties. Its beneficial role in insulin resistance, dyslipidemia, hypertension, and obesity is being continuously documented. The fermentability of β-glucans and their ability to form highly viscous solutions in the human gut may constitute the basis of their health benefits. Consequently, the applicability of β-glucan as a food ingredient is being widely considered with the dual purposes of increasing the fiber content of food products and enhancing their health properties. Therefore, this paper explores the role of β-glucans in the prevention and treatment of characteristics of the metabolic syndrome, their underlying mechanisms of action, and their potential in food applications.
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Gentilcore D, Vanis L, Teng JC, Wishart JM, Buckley JD, Rayner CK, Horowitz M, Jones KL. The oligosaccharide α-cyclodextrin has modest effects to slow gastric emptying and modify the glycaemic response to sucrose in healthy older adults. Br J Nutr 2011; 106:583-7. [PMID: 21554816 DOI: 10.1017/s0007114511000444] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
In healthy older subjects, the glycaemic response to carbohydrate-containing meals is dependent on gastric emptying and intestinal absorption; when the latter is slowed, the magnitude of the rise in glucose is attenuated. The oligosaccharide α-cyclodextrin has been reported to diminish the glycaemic response to starch in young adults; this effect has been attributed to the inhibition of pancreatic amylase. We examined the effects of α-cyclodextrin on gastric emptying of, and the glycaemic and insulinaemic responses to, oral sucrose in healthy older subjects; as sucrose is hydrolysed by intestinal disaccharides, any effect(s) of α-cyclodextrin would not be attributable to amylase inhibition. A total of ten subjects (seven males and three females, age 68-76 years) were studied on 2 d. Gastric emptying, blood glucose and serum insulin were measured after ingestion of a 300 ml drink containing 100 g sucrose, labelled with (99m)Tc-sulphur colloid, with or without 10 g α-cyclodextrin. Gastric emptying was slowed slightly by α-cyclodextrin; this effect was evident between 135 and 195 min and was associated with a slight increase (P < 0·05) in distal stomach retention. After α-cyclodextrin, blood glucose was slightly less (P < 0·05) at 60 min, and serum insulin was less (P < 0·0005) at 90 and 120 min. There was no difference in the incremental areas under the curve (iAUC) for blood glucose, but there was a trend for the iAUC for serum insulin to be lower (P = 0·09) after α-cyclodextrin. We conclude that in a dose of 10 g, α-cyclodextrin has modest effects to slow gastric emptying of, and modify the glycaemic and insulinaemic responses to, oral sucrose, probably due to delayed intestinal carbohydrate absorption.
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Affiliation(s)
- Diana Gentilcore
- Discipline of Medicine, Royal Adelaide Hospital, University of Adelaide, Adelaide, SA, Australia
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Comerford KB, Artiss JD, Jen KLC, Karakas SE. The beneficial effects of α-cyclodextrin on blood lipids and weight loss in healthy humans. Obesity (Silver Spring) 2011; 19:1200-4. [PMID: 21127475 DOI: 10.1038/oby.2010.280] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
α-Cyclodextrin (α-CD) is a soluble fiber derived from corn. It has previously been reported that early intervention with Mirafit fbcx, a trademarked name for α-CD, has beneficial effects on weight management in obese individuals with type 2 diabetes, and that it preferentially reduces blood levels of saturated and trans fats in the LDL receptor knockout mice. The current investigation involves overweight but not obese nondiabetic individuals and was intended to confirm the effects of α-CD on both weight management and improving blood lipid levels. Forty-one healthy adults (age: 41.4 ± 13.6 years) participated in this 2-month, double-blinded, crossover study. In 28 compliant participants (8 males and 20 females), when the active phase was compared to the control phase, there were significant decreases in body weight (-0.4 ± 0.2 kg, P < 0.05), serum total cholesterol (mean ± s.e.m., -0.295 ± 0.10 mmol/l, 5.3%, P < 0.02) and low-density lipoprotein (LDL) cholesterol (-0.23 ± 0.11 mmol/l, -6.7%, P < 0.05). Apolipoprotein B (Apo B) (-0.0404 ± 0.02 g/l, -5.6%, P = 0.06) and insulin levels also decreased by 9.5% (-0.16 ± 0.08 pmol/l, P = 0.06) while blood glucose and leptin levels did not change. These results suggest that α-CD exerts its beneficial health effects on body weight and blood lipid profile in healthy nonobese individuals, as previously reported in obese individuals with type 2 diabetes.
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Affiliation(s)
- Kevin B Comerford
- Division of Endocrinology, Clinical Nutrition and Vascular Medicine, School of Medicine, UC Davis, Davis, California, USA
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Monsivais P, Carter BE, Christiansen M, Perrigue MM, Drewnowski A. Soluble fiber dextrin enhances the satiating power of beverages. Appetite 2010; 56:9-14. [PMID: 21056069 DOI: 10.1016/j.appet.2010.10.010] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2009] [Revised: 10/19/2010] [Accepted: 10/28/2010] [Indexed: 01/19/2023]
Abstract
This study compared the effects of four types of fiber on satiety and energy intakes at the next meal using a standard double-blinded preload study design. Study participants (14 men and 22 women) each took part in 6 study sessions. Study preloads were a combination of a solid snack and a liquid beverage (energy range 0.78-0.83 MJ) containing four different types of fiber: soluble fiber dextrin (12 g), soluble corn fiber (11.8 g), polydextrose (11.8 g), and resistant starch (11.2g). All four fibers were compared to two control conditions of equal volume: an isoenergetic, low-fiber preload and a lower-energy, low-fiber preload. All preloads were presented twice for a total of 0.35-1.65 MJ and 1-24 g fiber. Satiety ratings were collected for 20 min intervals for 220 min during the morning testing session. A test meal was served at 1200 h and plate waste measured. The five higher-energy preloads led to higher fullness and lower hunger ratings compared to the low-energy control but were not significantly different from each other. Relative to the isoenergetic control, only soluble fiber dextrin significantly suppressed energy intakes (p=0.023). Supplementing beverages with soluble fiber dextrin affects short term energy intake and may have implications for weight control.
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Affiliation(s)
- Pablo Monsivais
- Nutritional Sciences Program, School of Public Health, University of Washington, Seattle, WA 98195, USA
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Scientific Opinion on the substantiation of health claims related to alpha cylcodextrin and reduction of post prandial glycaemic responses (ID 856, 2926), maintenance or achievement of a normal body weight (ID 2925) pursuant to Article 13(1) of Regulation (EC) No 1924/2006. EFSA J 2010. [DOI: 10.2903/j.efsa.2010.1479] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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