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Resistant starch

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https://www.readbyqxmd.com/read/28431559/effects-of-whole-grain-rye-with-and-without-resistant-starch-type-2-supplementation-on-glucose-tolerance-gut-hormones-inflammation-and-appetite-regulation-in-an-11-14-5%C3%A2-hour-perspective-a-randomized-controlled-study-in-healthy-subjects
#1
Jonna C Sandberg, Inger M E Björck, Anne C Nilsson
BACKGROUND: The prevalence of obesity is increasing worldwide and prevention is needed. Whole grain has shown potential to lower the risk of obesity, cardiovascular disease and type 2 diabetes. One possible mechanism behind the benefits of whole grain is the gut fermentation of dietary fiber (DF), e.g. non-starch polysaccharides and resistant starch (RS), in whole grain. The purpose of the study is to investigate the effect of whole grain rye-based products on glucose- and appetite regulation...
April 21, 2017: Nutrition Journal
https://www.readbyqxmd.com/read/28418082/non-digestible-carbohydrates-supplementation-increases-mir-32-expression-in-the-healthy-human-colorectal-epithelium-a-randomized-controlled-trial
#2
Fiona C Malcomson, Naomi D Willis, Iain McCallum, Long Xie, Bart Lagerwaard, Seamus Kelly, Michael Bradburn, Nigel J Belshaw, Ian T Johnson, John C Mathers
Colorectal cancer (CRC) risk is modulated by diet and there is convincing evidence of reduced risk with higher non-digestible carbohydrates (NDCs) consumption. Resistant starch (RS), a NDC, positively modulates the expression of oncogenic microRNAs, suggesting that this could be a mechanism through which NDCs protect against CRC. The present study aimed to investigate the effects of supplementation with two NDCs, RS and polydextrose (PD), on microRNA expression in the macroscopically-normal human rectal epithelium using samples from the DISC Study, a randomised, double-blind, placebo-controlled dietary intervention...
April 18, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28416867/response-surface-optimization-of-low-fat-ice-cream-production-by-using-resistant-starch-and-maltodextrin-as-a-fat-replacing-agent
#3
Mojtaba Azari-Anpar, Morteza Khomeiri, Hamed Ghafouri-Oskuei, Narjes Aghajani
In this research, maltodextrin (0, 1 and 2% w/w) and resistant starch (0, 1 and 2% w/w) were used in the formulation of low-fat ice cream (4% fat) and their effects on the physicochemical and sensory properties were investigated. The optimum levels of maltodextrin and resistant starch were determined by response surface methodology. Increment of maltodextrin and resistant starch increased acidity, viscosity, melting rate, time of dripping and overrun but decreased melting rate of ice cream. Results showed that the incorporation of maltodextrin and resistant starch at 0 and 2% w/w respectively, resulted into ice cream with suitable viscosity, melting rate, first dripping time, overrun and acidity...
April 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28416038/the-effects-of-fermentation-and-enzymatic-treatment-of-pea-on-nutrient-digestibility-and-growth-performance-of-broilers
#4
F Goodarzi Boroojeni, M Senz, K Kozłowski, D Boros, M Wisniewska, D Rose, K Männer, J Zentek
The present study examined the impacts of native, fermented or enzymatically treated peas (Pisum sativum L.) inclusion in broiler diets, on growth performance and nutrient digestibility. For the fermentation process, Madonna pea was mixed with water (1/1) containing 2.57×108 Bacillus subtilis (GalliPro®) spores/kg pea and then, incubated for 48 h at 30 °C. For the enzymatic treatment process, the used water for dough production contained three enzymes, AlphaGalTM (α-galactosidase), RONOZYME® ProAct and VP (protease and pectinases respectively - DSM, Switzerland) and the pea dough incubated for 24 h at 30°C...
April 18, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28410921/a-randomized-trial-to-determine-the-impact-of-a-digestion-resistant-starch-composition-on-the-gut-microbiome-in-older-and-mid-age-adults
#5
Michelle J Alfa, David Strang, Paramjit S Tappia, Morag Graham, Gary Van Domselaar, Jessica D Forbes, Vanessa Laminman, Nancy Olson, Pat DeGagne, David Bray, Brenda-Lee Murray, Brenden Dufault, Lisa M Lix
BACKGROUND: The elderly often have a diet lacking resistant starch (RS) which is thought to lead to gut microbiome dysbiosis that may result in deterioration of gut colonocytes. OBJECTIVE: The primary objective was to assess if elderly (ELD; ≥ 70 years age) had microbiome dysbiosis compared to mid-age (MID; 30-50 years age) adults and then determine the impact of daily consumption of MSPrebiotic(®) (a RS) or placebo over 3 months on gut microbiome composition...
March 31, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28409508/performance-of-muscle-strength-and-fatigue-tolerance-in-young-trained-women-supplemented-with-caffeine
#6
Carlos A Fett, Natalia Magalhães Aquino, Jairo Schantz, Camila F Brandão, Joás D de Araújo Cavalcanti, Waleria C Rezende Fett
BACKGROUND: Verify the effect of caffeine supplementation on the muscular strength and fatigue tolerance of young trained women. METHODS: Eight women of 25±5 years old, who had undergone a minimum of 12 months of continuous resisted training, body mass index 20-23 kg/m2 were submitted to four tests: one repetition maximum (1- RM, kg) to pull down (PD), hack squat (HS), bench press (BP), and; knee extension exhaustion (drop-set, 100/80/60 kg, repetitions) (DS). They perform the tests in four consecutive blocks one-week apart crossover system: basal without caffeine (B); first caffeine (C1); placebo with starch supplementation (P); second caffeine (C2)...
April 13, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28401254/genomic-models-with-genotype%C3%A2-%C3%A3-%C3%A2-environment-interaction-for-predicting-hybrid-performance-an-application-in-maize-hybrids
#7
Rocío Acosta-Pech, José Crossa, Gustavo de Los Campos, Simon Teyssèdre, Bruno Claustres, Sergio Pérez-Elizalde, Paulino Pérez-Rodríguez
A new genomic model that incorporates genotype × environment interaction gave increased prediction accuracy of untested hybrid response for traits such as percent starch content, percent dry matter content and silage yield of maize hybrids. The prediction of hybrid performance (HP) is very important in agricultural breeding programs. In plant breeding, multi-environment trials play an important role in the selection of important traits, such as stability across environments, grain yield and pest resistance...
April 11, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28399707/fine-tuning-of-process-parameters-for-improving-briquette-production-from-palm-kernel-shell-gasification-waste
#8
Alireza Bazargan, Sarah L Rough, Gordon McKay
Palm kernel shell biochars (PKSB) ejected as residues from a gasifier have been used for solid fuel briquette production. With this approach, palm kernel shells can be used for energy production twice: first, by producing rich syngas during gasification; second, by compacting the leftover residues from gasification into high calorific value briquettes. Herein, the process parameters for the manufacture of PKSB biomass briquettes via compaction are optimized. Two possible optimum process scenarios are considered...
April 12, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28398614/nixtamalization-process-affects-resistant-starch-formation-and-glycemic-index-of-tamales
#9
Rosa María Mariscal-Moreno, Juan de Dios Figueroa Cárdenas, David Santiago-Ramos, Patricia Rayas-Duarte, José Juan Veles-Medina, Héctor Eduardo Martínez-Flores
Tamales were prepared with 3 nixtamalization processes (traditional, ecological, and classic) and evaluated for chemical composition, starch properties, and glycemic index. Resistant starch (RS) in tamales increased 1.6 to 3.7 times compared to raw maize. This increment was due to the starch retrogradation (RS3) and amylose-lipid complexes (RS5) formation. Tamales elaborated with classic and ecological nixtamalization processes exhibited the highest total, soluble and insoluble dietary fiber content, and the highest RS content and lower in vivo glycemic index compared to tamales elaborated with traditional nixtamalization process...
April 11, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28377317/dehydroascorbate-derivatized-chitosan-particles-for-targeting-antimalarial-agents-to-infected-erythrocytes
#10
Hasham Shafi, D V Siva Reddy, Tabassum Khan, Rajeev Ranjan, Ashish Srivastava, Suniti Vaishya, Tanuj Sharma, Mohammad Imran Siddiqui, Saman Habib, Amit Misra
The mammalian glucose transporter GLUT-1 and Plasmodium falciparum hexose transporter PfHT1 are overexpressed on human RBC infected with the parasite (iRBC), presumably for enhanced glucose uptake. Dehydroascorbic acid (DHA) competes out glucose in GLUT-1 binding. We prepared particles containing chloroquine phosphate using novel derivatives of chitosan (CSN). CSN was either pre-derivatized with DHA (PRE) or particles made of CSN were derivatized by surface-grafting DHA (POST). The optimized formulations were analyzed for size (170-200nm) drug content (about 40%) entrapment efficiency (50-57%), in vitro drug release (80% in 72h, Higuchi's model), hemolysis on exposure to whole blood or RBC at 5% hematocrit, cytotoxicity towards cultured HEK 293T (kidney) and HepG2 (hepatic) cells, targeting iRBC and in vitro efficacy against P...
April 2, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28372189/in-vitro-starch-hydrolysis-and-estimated-glycemic-index-of-tef-porridge-and-injera
#11
Habtu Shumoy, Katleen Raes
The aim of this study was to investigate the in vitro starch digestibility of injera and porridge from seven tef varieties and to estimate their glycemic index. The total starch, free glucose, apparent amylose, resistant, slowly digestible and rapidly digestible starches of the varieties ranged between 66 and 76, 1.8 and 2.4g/100g flour dry matter (DM), 29 and 31%, 17 and 68, 19 and 53, 12 and 30g/100g starch DM, respectively. After processing into injera and porridge, the rapidly digestible starch content increased by 60-85% and 3-69%, respectively...
August 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28372156/digestibility-physicochemical-and-structural-properties-of-octenyl-succinic-anhydride-modified-cassava-starches-with-different-degree-of-substitution
#12
Bao Zhang, Ji-Qiang Mei, Bo Chen, Han-Qing Chen
The octenylsuccinylated cassava starch (OSCS) samples with a degree of substitution (DS) in the range of 0.008 to 0.035 were prepared in this study. The structural, physicochemical, and in vitro digestibility properties of OS-starch samples were investigated. Intensities of characteristic peaks at 1724cm(-1) and 1572cm(-1) increased with increasing DS, which confirmed successful introduction of ester carbonyl groups into starch molecules. The esterification occurred primarily in the amorphous regions and surface of starch granule, and the crystalline pattern did not change...
August 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28369955/effect-of-extrusion-on-physicochemical-properties-digestibility-and-phenolic-profiles-of-grit-fractions-obtained-from-dry-milling-of-normal-and-waxy-corn
#13
Sheetal Thakur, Narpinder Singh, Amritpal Kaur, Baljit Singh
Extrusion behavior of grits obtained from 3 successive reductions of dry milling of 2 normal corn types and 1 waxy corn was studied at different extrusion temperatures (ET). The grit from each reduction stage (RS) showed the presence of base-hydrolyzed bound protocatechuic acid, p-coumaric acid, sinapic acid, ferulic acid, and quercetin, and the concentrations of these decreased after acid hydrolysis and that of gallic acid increased. African tall grit from all RSs showed the highest average specific mechanical energy (SME) and torque, while waxy corn grit had the lowest...
March 29, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28369903/changes-in-protein-and-starch-digestibility-in-sorghum-flour-during-heat-moisture-treatments
#14
Thanh-Hien Vu, Scott Bean, Chao-Feng Hsieh, Yong-Cheng Shi
BACKGROUND: Heat-moisture treatment (HMT) has been used to modify properties of sorghum starches. However, information is limited on the effects of HMT on the digestibility of starch and the concurrent changes in protein in sorghum flour. The objectives of this research were to identify heat-moisture conditions to increase the resistant starch (RS) content of sorghum flour and investigate changes in sorghum proteins and starch structure. RESULTS: Sorghum flours with different moisture contents (0, 125, 200, and 300 g kg(-1) w...
April 3, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28365323/pathogenic-potentials-of-aeromonas-species-isolated-from-aquaculture-and-abattoir-environments
#15
Isoken H Igbinosa, Abeni Beshiru, Emmanuel E Odjadjare, Collins N Ateba, Etinosa O Igbinosa
The present study elucidated the presence of antibiotics resistance, virulence genes and biofilm potentials among Aeromonas species isolated from abattoir and aquaculture environments in Benin City, Nigeria. A total of 144 wastewater samples were obtained from two independent aquaculture and abattoir environments between May and October 2016. Aeromonas species were isolated on Glutamate Starch Phenol Red (GSP) agar and confirmed using API 20NE kits. Antimicrobial susceptibility profile of the isolates was carried out using standard disc diffusion assay while biofilm potentials were detected by the microtitre plate method and PCR technique was used to detect antibiotics resistance and virulence gene markers...
March 30, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28363537/surface-and-nutraceutical-properties-of-edible-films-made-from-starchy-sources-with-and-without-added-blackberry-pulp
#16
Tomy J Gutiérrez
The surface and nutraceutical properties have been poorly studied on edible films. The aim of this study was to investigate the surface properties and potential health effects in terms of in vitro digestibility and anti-inflammatory activity. The materials were developed from native plantain starch and pre-gelatinized plantain flour with and without added blackberry pulp using casting methodology. Thermogravimetric analysis, contact angle, scanning electron microscopy, atomic force microscopy, resistant starch, in vitro digestibility, cell viability, reactive oxygen species, anti-inflammatory activity and sensory evaluation were the tests carried out in this study...
June 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28362171/effects-of-dietary-resistant-starch-on-the-wnt-signaling-pathway-and-preneoplastic-cells-in-the-colons-of-azoxymethane-treated-rats
#17
Nicole Cray, Yinsheng Zhao, Yinan Fang, Peng Liu, Linda Pollak, Susan Duvick, Diane F Birt, Elizabeth M Whitley
Dietary resistant starch (RS) has been suggested to reduce colonic neoplasia. To determine the effects of digestion-resistant cornstarch on colonic carcinogenesis and Wnt signaling in azoxymethane (AOM)-treated F344 rats, diets containing naturally occurring RS from corn lines derived partially from Guat209 (GUAT), AR16035 (AR), or a hybrid (ARxGUAT), containing 34.5 ± 2.0, 0.2 ± 0.1, and 1.9 ± 0.1% RS, respectively, were fed at 55% of the diet. GUAT-fed rats had increased cecal content and tissue weight and decreased cecal pH compared with AR- or ARxGUAT-fed rats...
March 31, 2017: Nutrition and Cancer
https://www.readbyqxmd.com/read/28359895/multi-scale-structure-pasting-and-digestibility-of-heat-moisture-treated-red-adzuki-bean-starch
#18
Hongwei Wang, Zhaoyuan Wang, Xiaoxi Li, Ling Chen, Binjia Zhang
The pasting and digestibility of a red adzuki bean starch were simultaneously modulated by heat-moisture treatment (HMT) through altering the multi-scale structure. HMT, especially at high moisture content, could disrupt the granule integrity, semicrystalline lamellae, molecular order (crystallites) and molecular chains. Also, certain rearrangement of starch molecules occurred to form ordered structures with increased thermal stability as shown by DSC. This concomitant disordering and reassembly in the multi-scale structure converted the fractions of resistant starch (RS) and rapidly digestible starch (RDS) into that of slowly digestible starch (SDS)...
March 28, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28346394/engineered-resistant-starch-ers-diet-shapes-colon-microbiota-profile-in-parallel-with-the-retardation-of-tumor-growth-in-in-vitro-and-in-vivo-pancreatic-cancer-models
#19
Concetta Panebianco, Kaarel Adamberg, Signe Adamberg, Chiara Saracino, Madis Jaagura, Kaia Kolk, Anna Grazia Di Chio, Paolo Graziano, Raivo Vilu, Valerio Pazienza
BACKGROUND/AIMS: Pancreatic cancer (PC) is ranked as the fourth leading cause of cancer-related deaths worldwide. Despite recent advances in treatment options, a modest impact on the outcome of the disease is observed so far. We have previously demonstrated that short-term fasting cycles have the potential to improve the efficacy of chemotherapy against PC. The aim of this study was to assess the effect of an engineered resistant-starch (ERS) mimicking diet on the growth of cancer cell lines in vitro, on the composition of fecal microbiota, and on tumor growth in an in vivo pancreatic cancer mouse xenograft model...
March 27, 2017: Nutrients
https://www.readbyqxmd.com/read/28341177/changes-in-physicochemical-properties-and-in-vitro-starch-digestion-of-native-and-extruded-maize-flours-subjected-to-branching-enzyme-and-maltogenic-%C3%AE-amylase-treatment
#20
Laura Román, Mario M Martínez, Cristina M Rosell, Manuel Gómez
Extrusion is an increasingly used type of processing which combined with enzymatic action could open extended possibilities for obtaining clean label modified flours. In this study, native and extruded maize flours were modified using branching enzyme (B) and a combination of branching enzyme and maltogenic α-amylase (BMA) in order to modulate their hydrolysis properties. The microstructure, pasting properties, in vitro starch hydrolysis and resistant starch content of the flours were investigated. Whereas BMA treatment led to greater number of holes on the granule surface in native samples, B and BMA extruded samples showed rougher surfaces with cavities...
March 21, 2017: International Journal of Biological Macromolecules
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