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Resistant starch

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https://www.readbyqxmd.com/read/27929184/a-comparison-of-rs4-type-resistant-starch-to-rs2-type-resistant-starch-in-suppressing-oxidative-stress-in-high-fat-diet-induced-obese-rats
#1
Xu Si, Zhongkai Zhou, Padraig Strappe, Chris Blanchard
The anti-obesity effects of two types of resistant starch (RS) in high-fat-diet-induced obese rats were investigated. The serum triglycerides, total cholesterol and malondialdehyde concentrations were significantly reduced, and the total antioxidant capacity, superoxide dismutase levels and glutathione peroxidase activity were increased by RS2 and RS4 consumption compared to the obesity group. A significant reduction in the serum glucose level and elevations in hepatic lipid metabolic enzyme activities were observed only for RS4 administration...
December 8, 2016: Food & Function
https://www.readbyqxmd.com/read/27911928/%C3%AE-glucans-and-resistant-starch-alter-the-fermentation-of-recalcitrant-fibers-in-growing-pigs
#2
Sonja de Vries, Walter J J Gerrits, Mirjam A Kabel, Thava Vasanthan, Ruurd T Zijlstra
Interactions among dietary ingredients are often assumed non-existent when evaluating the nutritive value and health effects of dietary fiber. Specific fibers can distinctly affect digestive processes; therefore, digestibility and fermentability of the complete diet may depend on fiber types present. This study aimed to evaluate the effects of readily fermentable fibers (β-glucans and resistant starch) on the degradation of feed ingredients containing more persistent, recalcitrant, fibers. Six semi-synthetic diets with recalcitrant fibers from rapeseed meal (pectic polysaccharides, xyloglucans, and cellulose) or corn distillers dried grain with solubles (DDGS; (glucurono)arabinoxylans and cellulose) with or without inclusion of β-glucans (6%) or retrograded tapioca (40%) substituted for corn starch were formulated...
2016: PloS One
https://www.readbyqxmd.com/read/27908713/optimization-of-resistant-starch-formation-from-high-amylose-corn-starch-by-microwave-irradiation-treatments-and-characterization-of-starch-preparations
#3
Selime Mutlu, Kevser Kahraman, Serpil Öztürk
The effects of microwave irradiation on resistant starch (RS) formation and functional properties in high-amylose corn starch, Hylon VII, by applying microwave-storing cycles and drying processes were investigated. The Response Surface Methodology (RSM) was used to optimize the reaction conditions, microwave time (2-4min) and power (20-100%), for RS formation. The starch:water (1:10) mixtures were cooked and autoclaved and then different microwave-storing cycles and drying (oven or freeze drying) processes were applied...
November 28, 2016: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/27905218/optimization-of-the-malting-process-for-nutritional-improvement-of-finger-millet-and-amaranth-flours-in-the-infant-weaning-food-industry
#4
Sara Najdi Hejazi, Valérie Orsat
Malting is a beneficial approach to improve the nutritional value of cereals used in infant preparations. Malted finger millet and amaranth might be considered as potentially appropriate gluten-free alternatives for common wheat-based weaning products, especially in case of those suffering from celiac disease. In this study, the effects of germination temperature and duration on the main nutrients of malted finger millet and amaranth, are evaluated and optimized. Grains were germinated for 24, 36 and 48 h at 22, 26 and 30 °C...
December 1, 2016: International Journal of Food Sciences and Nutrition
https://www.readbyqxmd.com/read/27904393/the-production-of-synbiotic-bread-by-microencapsulation
#5
Mojan Seyedain-Ardabili, Anousheh Sharifan, Babak Ghiassi Tarzi
Bread is a global staple food. Despite attempts to develop functional breads containing viable microorganisms, this has not been done yet because of the high temperature during baking. The aim of this study is to obtain synbiotic bread, hence hamburger bun and white pan bread were selected. Lactobacillus acidophilus LA-5 and L. casei 431 were encapsulated with calcium alginate and Hi-maize resistant starch via emulsion technique and coated with chitosan. The morphology and size of microcapsules were measured by scanning electron microscopy and particle size analyser...
March 2016: Food Technology and Biotechnology
https://www.readbyqxmd.com/read/27898815/germplasm-architecture-revealed-through-chromosomal-effects-for-quantitative-traits-in-maize
#6
Rex Bernardo, Addie M Thompson
Germplasm architecture refers to how favorable alleles for a given trait are distributed across the genome in a germplasm collection. Our objective was to assess germplasm architecture for quantitative traits among US maize ( L.) inbreds. A total of 271 inbreds were genotyped at 28,626 single nucleotide polymorphism (SNP) loci and phenotyped for anthesis date, plant height, starch and protein concentration, and resistance to northern corn leaf blight (NCLB, caused by ). Chromosomal effects were calculated as the sum of the trait effects of SNP alleles carried on a specific chromosome by an inbred...
July 2016: Plant Genome
https://www.readbyqxmd.com/read/27888006/physicochemical-characteristics-and-in-vitro-digestibility-of-potato-and-cassava-starches-under-organic-acid-and-heat-moisture-treatments
#7
Pham Van Hung, Nguyen Thi Mai Huong, Nguyen Thi Lan Phi, Nguyen Ngoc Thanh Tien
A combination of acid (citric acid or lactic acid) and heat-moisture treatment was used to modify cassava and potato starches in this study. Changes in physicochemical properties and in vitro digestibility of the treated starches were investigated. The cassava starch contained 17.0% amylose and possessed A-type crystallinity, whereas the potato starch had 27.4% amylose and possessed B-type crystallinity. After acid and heat-moisture treatment, the crystalline structure of the cassava starch remained unchanged (A type), while the crystalline structure of the potato starch changed from B type to the C (B+A) type...
November 22, 2016: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/27885933/sufficient-intake-of-high-amylose-cornstarch-maintains-high-colonic-hydrogen-production-for-24%C3%A2-h-in-rats
#8
Naomichi Nishimura, Hiroki Tanabe, Tatsuro Yamamoto
Colonic hydrogen (H2) can suppress oxidative stress and damage in the body. We examined the minimum requirement of high amylose cornstarch (HAS) to maintain high colonic H2 production for 24 h. Ileorectostomized and sham-operated rats were fed a control diet supplemented with or without 20% HAS for 7 days. Colonic starch utilization was determined. Next, rats were fed the control diet with or without 10% or 20% HAS for 14 or 28 days, respectively. Breath and flatus H2 excretion for 24 h was measured. 1...
January 2017: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/27869712/beneficial-effects-of-pterocarpan-high-soybean-leaf-extract-on-metabolic-syndrome-in-overweight-and-obese-korean-subjects-randomized-controlled-trial
#9
Ri Ryu, Tae-Sook Jeong, Ye Jin Kim, Ji-Young Choi, Su-Jung Cho, Eun-Young Kwon, Un Ju Jung, Hyeon-Seon Ji, Dong-Ha Shin, Myung-Sook Choi
Pterocarpans are known to have antifungal and anti-inflammatory properties. However, little is known about the changes in transcriptional profiles in response to a pterocarpan-high soybean leaf extract (PT). Therefore, this study investigated the effects of PT on blood glucose and lipid levels, as well as on the inflammation-related gene expression based on a peripheral blood mononuclear cells (PBMCs) mRNA sequencing analysis in Korean overweight and obese subjects with mild metabolic syndrome. The participants were randomly assigned to two groups and were administered either placebo (starch, 3 g/day) or PT (2 g/day) for 12 weeks...
November 18, 2016: Nutrients
https://www.readbyqxmd.com/read/27855919/impact-of-amylosucrase-modification-on-the-structural-and-physicochemical-properties-of-native-and-acid-thinned-waxy-corn-starch
#10
Hao Zhang, Xing Zhou, Jian He, Tao Wang, Xiaohu Luo, Li Wang, Ren Wang, Zhengxing Chen
Recombinant amylosucrase from Neisseria polysaccharea was utilized to modify native and acid-thinned starches. The molecular structures and physicochemical properties of modified starches were investigated. Acid-thinned starch displayed much lower viscosity after gelatinization than did the native starch. However, the enzyme exhibited similar catalytic efficiency for both forms of starch. The modified starches had higher proportions of long (DP>33) and intermediate chains (DP 13-33), and X-ray diffraction showed a B-type crystalline structure for all modified starches...
April 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27842869/isolation-and-biochemical-characterisation-of-a-bacteriocin-like-substance-produced-by-bacillus-amyloliquefaciens-an6
#11
Hanen Ben Ayed, Hana Maalej, Noomen Hmidet, Moncef Nasri
This study focuses on the isolation and characterisation of a peptide with bacteriocin-like properties from Bacillus amyloliquefaciens An6. Incubation conditions were optimised, and the effects of the incubation period and of carbon and nitrogen sources were investigated. The produced bacteriocin was partially purified with ammonium sulphate precipitation, dialysis and ultrafiltration and was then biochemically characterised. Maximum bacteriocin production was achieved after 48h of incubation in a culture medium containing 20g/L starch and 10g/L yeast extract, with an initial pH 8...
December 2015: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/27832729/potato-powders-prepared-by-successive-cooking-process-depending-on-resistant-starch-content-affect-the-intestinal-fermentation-in-rats
#12
Sakura Kawakami, Kyu-Ho Han, Takahiro Araki, Kiyoshi Ohba, Tatsuya Wakabayashi, Kenichiro Shimada, Michihiro Fukushima
The effects of resistant starch (RS) in dry potato powders prepared by various processes on intestinal fermentation in rats were assessed. Rats were fed raw potato powder (RP), blanched potato powder (BP), steamed potato powder (SP), or drum-dried potato powder (DP) for 4 weeks. The cecal RS content was significantly higher in the RP group than in the control diet (CN) group and other dry potato powder groups. Cecum pH was significantly lower in the RP group compared to the CN group, and was also significantly lower than that in the SP, BP, and DP groups...
November 11, 2016: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/27821062/the-highly-variable-microbiota-associated-to-intestinal-mucosa-correlates-with-growth-and-hypoxia-resistance-of-sea-bass-dicentrarchus-labrax-submitted-to-different-nutritional-histories
#13
François-Joël Gatesoupe, Christine Huelvan, Nicolas Le Bayon, Hervé Le Delliou, Lauriane Madec, Olivier Mouchel, Patrick Quazuguel, David Mazurais, José-Luis Zambonino-Infante
BACKGROUND: The better understanding of how intestinal microbiota interacts with fish health is one of the key to sustainable aquaculture development. The present experiment aimed at correlating active microbiota associated to intestinal mucosa with Specific Growth Rate (SGR) and Hypoxia Resistance Time (HRT) in European sea bass individuals submitted to different nutritional histories: the fish were fed either standard or unbalanced diets at first feeding, and then mixed before repeating the dietary challenge in a common garden approach at the juvenile stage...
November 8, 2016: BMC Microbiology
https://www.readbyqxmd.com/read/27818793/transient-decrease-in-circulatory-testosterone-and-homocysteine-precedes-the-development-of-metabolic-syndrome-features-in-fructose-fed-sprague-dawley-rats
#14
Anil Sakamuri, Sujatha Pitla, Uday Kumar Putcha, Sugeedha Jayapal, Sailaja Pothana, Sai Santosh Vadakattu, Nagabhushan Reddy Konapalli, Siva Sankara Vara Prasad Sakamuri, Ahamed Ibrahim
Background. Increased fructose consumption is linked to the development of metabolic syndrome (MS). Here we investigated the time course of development of MS features in high-fructose-fed Sprague Dawley rats along with circulatory testosterone and homocysteine levels. Methods. Rats were divided into control and experimental groups and fed with diets containing 54.5% starch and fructose, respectively, for 4, 12, and 24 weeks. Plasma testosterone and homocysteine levels were measured along with insulin, glucose, and lipids...
2016: Journal of Nutrition and Metabolism
https://www.readbyqxmd.com/read/27818720/registration-of-common-wheat-germplasm-with-mutations-in-sbeii-genes-conferring-increased-grain-amylose-and-resistant-starch-content
#15
André Schönhofen, Brittany Hazard, Xiaoqin Zhang, Jorge Dubcovsky
Starch present in the endosperm of common wheat (Triticum aestivum L.) grains is an important source of carbohydrates worldwide. Starches with a greater proportion of amylose have increased levels of resistant starch, a dietary fiber that can provide human health benefits. Induced mutations in STARCH BRANCHING ENZYME II (SBEII) genes in wheat are associated with increased amylose and resistant starch. Ethyl methane sulfonate mutations in SBEIIa and SBEIIb paralogs were combined in the hexaploid wheat cultivar Lassik...
May 2016: Journal of Plant Registrations
https://www.readbyqxmd.com/read/27816752/reduced-intake-of-carbohydrate-prevents-the-development-of-obesity-and-impaired-glucose-metabolism-in-ghrelin-o-acyltransferase-knockout-mice
#16
Tetsuya Kouno, Nobuteru Akiyama, Kumiko Fujieda, Isamu Nanchi, Tomohiko Okuda, Takanori Iwasaki, Shogo Oka, Hideo Yukioka
A close relationship between acylated-ghrelin and sucrose intake has been reported. However, little has been examined about the physiological action of ghrelin on preference for different types of carbohydrate such as glucose, fructose, and starch. The current study was aimed to investigate the role of acylated-ghrelin in the determinants of the choice of carbohydrates, and pathogenesis of chronic disorders, including obesity and insulin resistance. In a two-bottle-drinking test, ghrelin O-acyltransferase (GOAT) knockout (KO) mice consumed a less amount of glucose and maltodextrin, and almost the same amount of fructose and saccharin solution compared to WT littermates...
December 2016: Peptides
https://www.readbyqxmd.com/read/27807042/mice-fed-a-high-fat-diet-supplemented-with-resistant-starch-display-marked-shifts-in-the-liver-metabolome-concurrent-with-altered-gut-bacteria
#17
Dorothy A Kieffer, Brian D Piccolo, Maria L Marco, Eun Bae Kim, Michael L Goodson, Michael J Keenan, Tamara N Dunn, Knud Erik Bach Knudsen, Roy J Martin, Sean H Adams
BACKGROUND: High-amylose-maize resistant starch type 2 (HAMRS2) is a fermentable dietary fiber known to alter the gut milieu, including the gut microbiota, which may explain the reported effects of resistant starch to ameliorate obesity-associated metabolic dysfunction. OBJECTIVE: Our working hypothesis was that HAMRS2-induced microbiome changes alter gut-derived signals (i.e., xenometabolites) reaching the liver via the portal circulation, in turn altering liver metabolism by regulating gene expression and other pathways...
November 2, 2016: Journal of Nutrition
https://www.readbyqxmd.com/read/27795682/the-impact-of-the-ssiia-null-mutations-on-grain-traits-and-composition-in-durum-wheat
#18
Ermelinda Botticella, Francesco Sestili, Gianluca Ferrazzano, Paola Mantovani, Alessandro Cammerata, Maria Grazia D'Egidio, Domenico Lafiandra
Starch represents a major nutrient in the human diet providing essentially a source of energy. More recently the modification of its composition has been associated with new functionalities both at the nutritional and technological level. Targeting the major starch biosynthetic enzymes has been shown to be a valuable strategy to manipulate the amylose-amylopectin ratio in reserve starch. In the present work a breeding strategy aiming to produce a set of SSIIa (starch synthases IIa) null durum wheat is described...
September 2016: Breeding Science
https://www.readbyqxmd.com/read/27795673/a-single-amino-acid-mutation-of-ossbeiib-contributes-to-resistant-starch-accumulation-in-rice
#19
Ruifang Yang, Jianjiang Bai, Jun Fang, Ying Wang, Gangseob Lee, Zhongze Piao
Foods rich in resistant starch can help prevent various diseases, including diabetes, colon cancers, diarrhea, and chronic renal and hepatic diseases. Variations in starch biosynthesis enzymes could contribute to the high content of resistant starch in some cultivars of rice (Oryza sativa L.). Our previously published work indicated that the sbe3-rs gene in the rice mutant line, 'Jiangtangdao1' was a putative allele of the rice starch branching enzyme gene SBEIIb (previously known as SBE3); sbe3-rs might control the biosynthesis of the high resistant starch content in the rice line...
September 2016: Breeding Science
https://www.readbyqxmd.com/read/27794202/simultaneous-delivery-of-antibiotics-neomycin-and-ampicillin-in-drinking-water-inhibits-fermentation-of-resistant-starch-in-rats
#20
Diana G Carvajal-Aldaz, Justin L Guice, Ryan C Page, Anne M Raggio, Roy J Martin, Claudia Husseneder, Holiday A Durham, James Geaghan, Marlene Janes, Ted Gauthier, Diana Coulon, Michael J Keenan
SCOPE: Antibiotics ampicillin 1g/L and neomycin 0.5g/L were added to drinking water before or during feeding of resistant starch (RS) to rats to inhibit fermentation. METHODS AND RESULTS: In a preliminary study antibiotics and no RS were given prior to rats receiving a transplant of cecal contents via gavage from donor rats fed RS (without antibiotics) or a water gavage before feeding resistant starch to both groups. Antibiotics given prior to feeding RS did not prevent later fermentation of RS regardless of either type of gavage...
October 29, 2016: Molecular Nutrition & Food Research
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