Effect Of Resistant Maltodextrin Research Articles

High-Shear Granulation of Hygroscopic Probiotic-Encapsulated Skim Milk Powder: Effects of Moisture-Activation and Resistant Maltodextrin.

A fine, hygroscopic, and poorly flowable probiotic powder encapsulating Lactobacillus rhamnosus GG (LGG) was granulated using a high-shear granulation process, wherein a small amount of water (4%, w/w) was used for moisture-activation with or without 10% (w/w) resistant maltodextrin (RM). The process consisted of four steps; premixing, agglomeration, moisture absorption, and drying steps. The moisture content, water activity, and viable cell count were monitored during the granulation. The size, morphology, and flowability of the granules were determined. The powder was successfully converted to about 10-times-larger granules (mass mean diameter = 162-204 µm) by this process, and the granules had a 'snowball' morphology. The LGG cells were well preserved under the high-shear granulation conditions, and the viable cell count of the granules greatly exceeded the minimum therapeutic level recommended for probiotic powders. The addition of RM decreased the moisture content of the granules; improved cell resistance to drying stress; narrowed the particle size distribution, with reductions seen in both very fine and very large particles; and produced more flowable granules. Moisture sorption analysis and differential scanning calorimetry demonstrated that these positive effects of RM on granulation were primarily attributed to its water distribution ability rather than its glass transition-related binding ability.

Oral Intake of Slowly Digestible α-Glucan Such as Resistant Maltodextrin Leads to Increased Secretion of Glucagon-Like Peptide-2 in Rats and Helps Thicken Their Ileal Mucosae.

To investigate whether the oral intake of slowly digestible α-glucan (SDG) could have a trophic (i.e., thickening) effect on their ileal mucosae, for 10 d, rats were given control (non-SDG), 10% isomaltodextrin (IMD) or 10% resistant maltodextrin (RMD) diets. In addition, experimental rat groups were further divided into two groups each and their diets either had or had not 1% sodium carboxymethylcellulose (CMC) added as a thickening agent. In the jejuna and the ilea, compared with control rats, the villus length and the mucosal thickness, but not the crypt depth, were significantly greater in the RMD-fed rats, with the trophic effect being weaker in the IMD-fed rats than in the RMD-fed rats. The colonic crypt depth was significantly greater in SDG groups than in the control group. The concentration of plasma glucagon-like peptide (GLP)-2 in the portal veins of the RMD group but not the IMD group was significantly higher than in the control group, with no effect of CMC supplementation on its concentration. The concentrations of cecal short-chain fatty acids did not significantly increase with SDG supplementation except for propionate concentration of the IMD-supplemented rats, compared with those in the control rats. We concluded that SDGs, especially RMD, thickened the mucosae of the rat distal small intestines. In particular, this effect of RMD but not IMD could have resulted from increased glucose available as a secretagogue of the trophic hormone GLP-2, in the ileum.

Effects of resistant maltodextrin on bowel movements: a systematic review and meta-analysis.

It is well known that dietary fiber helps to relieve and prevent constipation, and there are a number of scientific papers, including systematic reviews and meta-analyses on the effects of naturally derived dietary fiber on bowel movements. In recent years, there has been an increase in the manufacture of dietary fiber ingredients obtained from food raw materials, and these are now commonly available in the market. Resistant maltodextrin (RMD), a soluble dietary fiber, is manufactured from starch, and industrially produced soluble dietary fiber is used worldwide. While there are many reports on the effects of RMD on bowel movements, no systematic review or meta-analysis has been reported. We conducted a systematic review and meta-analysis to clarify the effect of RMD on bowel movements based on stool frequency and stool volume. We also investigated the subjective evaluation of RMD effects on bowel movements. Of a total of 314 potentially relevant articles, 28 articles met the eligibility criteria, and 29 randomized controlled trials were identified. As a result of integration analyses, we found that the intake of RMD significantly increased stool volume and stool frequency compared with placebo intake. Furthermore, RMD intake tended to improve sensation of complete/incomplete evacuation. In conclusion, the evidence suggests that RMD has a positive effect on bowel movements, contributing to normal bowel function. This finding will help in the development of new criteria for choice of dietary fiber in the process of developing food products.

Effects of Resistant Maltodextrin on the on Post-Prandial Blood Glucose Elevation in Japanese Individuals

Effects of Resistant Maltodextrin on the on Post-Prandial Blood Glucose Elevation in Japanese Individuals

Resistant Maltodextrin Decreases Micellar Solubility of Lipids and Diffusion of Bile Salt Micelles and Suppresses Incorporation of Micellar Fatty Acids into Caco-2 Cells.

Several studies have suggested that resistant maltodextrin (RMD) suppresses intestinal lipid absorption in experimental animals and humans. However, possible mechanisms underlying this effect are not known. In this study, effects of RMD on processes of the absorption of various lipids were investigated in vitro. RMD dose-dependently suppressed the solubility of various lipid components, including 1-mono-oleoylglycerol, oleic acid, and phosphatidylcholine in bile salt micelles in vitro. When the diffusion rate of bile salt micelles through a filter membrane was investigated in vitro, bile salt micelles containing RMD diffused more slowly than those without RMD. Incorporation of [1-14C] oleic acid into Caco-2 cells from the RMD-containing bile salt micelles was significantly smaller than that from the control micelles (without RMD). These results show that RMD suppresses intestinal absorption of lipids by decreasing their micellar solubility and the diffusion rate of bile salt micelles.

The Metabolizable Energy of Dietary Resistant Maltodextrin Is Variable and Alters Fecal Microbiota Composition in Adult Men

Resistant maltodextrin (RM) is a novel soluble, nonviscous dietary fiber. Its metabolizable energy (ME) and net energy (NE) values derived from nutrient balance studies are unknown, as is the effect of RM on fecal microbiota. A randomized, placebo-controlled, double-blind crossover study was conducted (n = 14 men) to determine the ME and NE of RM and its influence on fecal excretion of macronutrients and microbiota. Participants were assigned to a sequence consisting of 3 treatment periods [24 d each: 0 g/d RM + 50 g/d maltodextrin and 2 amounts of dietary RM (25 g/d RM + 25 g of maltodextrin/d and 50 g/d RM + 0 g/d maltodextrin)] and were provided all the foods they were to consume to maintain their body weight. After an adaptation period, excreta were collected during a 7-d period. After the collection period, 24-h energy expenditure was measured. Fluorescence in situ hybridization, quantitative polymerase chain reaction, and 454 titanium technology–based 16S rRNA sequencing were used to analyze fecal microbiota composition. Fecal amounts of energy (544, 662, 737 kJ/d), nitrogen (1.5, 1.8, 2.1 g/d), RM (0.3, 0.6, 1.2 g/d), and total carbohydrate (11.1, 14.2, 16.2 g/d) increased with increasing dose (0, 25, 50 g) of RM (P < 0.0001). Fat excretion did not differ among treatments. The ME value of RM was 8.2 and 10.4 kJ/g, and the NE value of RM was −8.2 and 2.0 kJ/g for the 25 and 50 g/d RM doses, respectively. Both doses of RM increased fecal wet weight (118, 148, 161 g/d; P < 0.0001) and fecal dry weight (26.5, 32.0, 35.8 g/d; P < 0.0001) compared with the maltodextrin placebo. Total counts of fecal bacteria increased by 12% for the 25 g/d RM dose (P = 0.17) and 18% for the 50 g/d RM dose (P = 0.019). RM intake was associated with statistically significant increases (P < 0.001) in various operational taxonomic units matching closest to ruminococcus, eubacterium, lachnospiraceae, bacteroides, holdemania, and faecalibacterium, implicating RM in their growth in the gut. Our findings provide empirical data important for food labeling regulations related to the energy value of RM and suggest that RM increases fecal bulk by enhancing the excretion of nitrogen and carbohydrate and the growth of specific microbial populations.

Effects of Resistant Maltodextrin on Fecal Microbiota Composition

Resistant maltodextrin (RM) is a soluble dietary fiber that although resistant to digestion by human enzymes is a substrate for fermentation by the commensal microbiota of the large intestine. We determined the effects of RM on gut microbiota composition in a randomized, controlled dose‐response feeding study in 15 healthy males (14 completed). Subjects were assigned to a treatment sequence that consisted of three 28 day treatments periods with controlled diets: a placebo diet (0 g/d RM + 50 g/d maltodextrin) and two levels of dietary RM (25 g/d RM + 25 g/d maltodextrin and 50 g/d RM + 0 g/d maltodextrin). Fecal samples for the microbiota studies were collected on Days 1, 13 and 24 of each period. Microbiota composition was determined using 16S rRNA based methods that included denaturing gradient gel electrophoresis (DGGE), fluorescent in situ hybridization (FISH), qPCR and 454 based pyrosequencing. Total numbers of bacteria/g of feces increased by 22% in subjects consuming 50 g/d RM (P =0.02). While microbiota diversity appeared unaffected, Bifidobacteria (FISH and qPCR) as well as Rumninococci and Prevotella (454 sequencing) were increased during RM periods. Differences in microbiota composition likely contributed to the variations in energy gain from RM intake observed for study subjects.Supported by USDA, ARS and Matsutani Chemical Industry Co., Ltd.

Effect of Resistant Maltodextrin on Digestion and Absorption of Lipids

In order to confirm the mechanism how postprandial elevation of triacylglycerol is suppressed by resistant maltodextrin (Fibersol-2), we conducted the following experiments. Firstly, Rats were fed a high-fat diet with resistant maltodextrin at 0% (control), 2.5% or 5% for 5 weeks to determine the lipid amount excreted in the feces of the last three days. The total lipid and triacylglycerol excreted in rat feces were significantly increased in a dose-dependent manner by the ingestion of resistant maltodextrin. Secondly, 10 healthy adult subjects were administrated a beverage containing 5 g resistant maltodextrin or placebo for 10 days, and crossed over after an 11-day washout. Total lipid excreted in feces was determined by collecting all the feces for the last three days. Fecal weight and fecal lipid amount of the subjects increased significantly with the ingestion of resistant maltodextrin compared to the placebo ingestion. Thirdly, oil emulsion prepared with resistant maltodextrin was assessed for its hydrolysis rate by lipase. The hydrolysis rate of lipid by lipase was not affected by resistant maltodextrin. Lastly, micelle emulsion was prepared with or without resistant maltodextrin, and their stability was compared. Resistant maltodextrin inhibited the decomposition of micelles and stabilized micellar structure. From these results, it was suggested that resistant maltodextrin suppresses lipid absorption and promotes the excretion of lipid into feces by delaying the release of fatty acids from micelles in the lipid absorption process. No inhibitory effect on lipase activity was observed by resistant maltodextrin.