Michael J Gidley

Summary

Affiliation: University of Queensland
Country: Australia

Publications

  1. Dhital S, Bhattarai R, Gorham J, Gidley M. Intactness of cell wall structure controls the in vitro digestion of starch in legumes. Food Funct. 2016;7:1367-79 pubmed publisher
    ..The results suggest that a single cell wall could be sufficient to provide an effective delivery of starch to the large intestine with consequent nutritional benefits, provided that mechanical damage during digestion is avoided. ..
  2. Oehme D, Downton M, Doblin M, Wagner J, Gidley M, Bacic A. Unique aspects of the structure and dynamics of elementary Iβ cellulose microfibrils revealed by computational simulations. Plant Physiol. 2015;168:3-17 pubmed publisher
    ..These data inform biochemical and molecular studies that must explain how a six-particle cellulose synthase complex rosette synthesizes microfibrils likely comprised of either 18 or 24 chains. ..
  3. Liu D, Lopez Sanchez P, Martínez Sanz M, Gilbert E, Gidley M. Adsorption isotherm studies on the interaction between polyphenols and apple cell walls: Effects of variety, heating and drying. Food Chem. 2019;282:58-66 pubmed publisher
    ..However, more than twofold reduction in binding capacities of polyphenols was induced after drying by altering the structural (i.e. binding sites) and compositional (i.e. pectin degradation) characteristics of cell walls. ..
  4. Feng G, Flanagan B, Williams B, Mikkelsen D, Yu W, Gidley M. Extracellular depolymerisation triggers fermentation of tamarind xyloglucan and wheat arabinoxylan by a porcine faecal inoculum. Carbohydr Polym. 2018;201:575-582 pubmed publisher
    ..Acetate and propionate are the main fermentation products and are produced concurrently with polysaccharide depletion. Butyrate, however, is produced more slowly consistent with it being a secondary metabolite. ..
  5. Phan A, Netzel G, Wang D, Flanagan B, D Arcy B, Gidley M. Binding of dietary polyphenols to cellulose: structural and nutritional aspects. Food Chem. 2015;171:388-96 pubmed publisher
  6. Feng G, Flanagan B, Mikkelsen D, Williams B, Yu W, Gilbert R, et al. Mechanisms of utilisation of arabinoxylans by a porcine faecal inoculum: competition and co-operation. Sci Rep. 2018;8:4546 pubmed publisher
    ..This study provides a model for the combined competitive-co-operative utilisation of complex dietary carbohydrates by gut microorganisms. ..
  7. Dhital S, Warren F, Zhang B, Gidley M. Amylase binding to starch granules under hydrolysing and non-hydrolysing conditions. Carbohydr Polym. 2014;113:97-107 pubmed publisher
    ..By visualising the enzyme location during binding and hydrolysis, detailed information is provided regarding the heterogeneity of granular starch digestion. ..
  8. Dhital S, Gidley M, Warren F. Inhibition of α-amylase activity by cellulose: Kinetic analysis and nutritional implications. Carbohydr Polym. 2015;123:305-12 pubmed publisher
    ..The dissociation constant (Kic) of the EI complex was found to be ca. 3mg/mL. The observed inhibition of α-amylase activity suggests that cellulose in the diet can potentially attenuate starch hydrolysis. ..
  9. Dhital S, Butardo V, Jobling S, Gidley M. Rice starch granule amylolysis--differentiating effects of particle size, morphology, thermal properties and crystalline polymorph. Carbohydr Polym. 2015;115:305-16 pubmed publisher

More Information

Publications23

  1. Low D, Williams B, D Arcy B, Flanagan B, Gidley M. In vitro fermentation of chewed mango and banana: particle size, starch and vascular fibre effects. Food Funct. 2015;6:2464-74 pubmed publisher
  2. Shrestha A, Blazek J, Flanagan B, Dhital S, Larroque O, Morell M, et al. Molecular, mesoscopic and microscopic structure evolution during amylase digestion of extruded maize and high amylose maize starches. Carbohydr Polym. 2015;118:224-34 pubmed publisher
  3. Zhang B, Dhital S, Flanagan B, Luckman P, Halley P, Gidley M. Extrusion induced low-order starch matrices: Enzymic hydrolysis and structure. Carbohydr Polym. 2015;134:485-96 pubmed publisher
  4. Gartaula G, Dhital S, Netzel G, Flanagan B, Yakubov G, Beahan C, et al. Quantitative structural organisation model for wheat endosperm cell walls: Cellulose as an important constituent. Carbohydr Polym. 2018;196:199-208 pubmed publisher
  5. Gunness P, Flanagan B, Mata J, Gilbert E, Gidley M. Molecular interactions of a model bile salt and porcine bile with (1,3:1,4)-β-glucans and arabinoxylans probed by (13)C NMR and SAXS. Food Chem. 2016;197:676-85 pubmed publisher
    ..Thus intermolecular interactions between SDF and BS depend on both SDF source and its molecular weight and may occur alone or in combination. ..
  6. Zhai H, Gunness P, Gidley M. Effects of cereal soluble dietary fibres on hydrolysis of p-nitrophenyl laurate by pancreatin. Food Funct. 2016;7:3382-9 pubmed publisher
  7. Pluschke A, Williams B, Zhang D, Gidley M. Dietary pectin and mango pulp effects on small intestinal enzyme activity levels and macronutrient digestion in grower pigs. Food Funct. 2018;9:991-999 pubmed publisher
  8. Zhang B, Selway N, Shelat K, Dhital S, Stokes J, Gidley M. Tribology of swollen starch granule suspensions from maize and potato. Carbohydr Polym. 2017;155:128-135 pubmed publisher
  9. Comino P, Williams B, Gidley M. In vitro fermentation gas kinetics and end-products of soluble and insoluble cereal flour dietary fibres are similar. Food Funct. 2018;9:898-905 pubmed publisher
  10. Wu P, Dhital S, Williams B, Chen X, Gidley M. Rheological and microstructural properties of porcine gastric digesta and diets containing pectin or mango powder. Carbohydr Polym. 2016;148:216-26 pubmed publisher
  11. Low D, Hodson M, Williams B, D Arcy B, Gidley M. Microbial biotransformation of polyphenols during in vitro colonic fermentation of masticated mango and banana. Food Chem. 2016;207:214-22 pubmed publisher
    ..Clusters and distinct discriminating compounds were recognised, which could lead to subsequent biomarker identification for establishing differences in polyphenol microbial metabolism of various fruit matrices. ..
  12. Bhattarai R, Dhital S, Wu P, Chen X, Gidley M. Digestion of isolated legume cells in a stomach-duodenum model: three mechanisms limit starch and protein hydrolysis. Food Funct. 2017;8:2573-2582 pubmed publisher
    ..The study suggests that the preservation of intactness of plant cells, such as from legumes, could be a viable approach to achieve the targeted delivery of resistant starch to the colon. ..
  13. Phan A, Flanagan B, D Arcy B, Gidley M. Binding selectivity of dietary polyphenols to different plant cell wall components: Quantification and mechanism. Food Chem. 2017;233:216-227 pubmed publisher
    ..NMR and CLSM analysis support the interactions between polyphenols and plant cell walls and show that although polyphenols are associated with plant cell walls under hydrated conditions, they are not immobilised on polymer surfaces. ..
  14. Hoang V, Innes D, Shaw P, Monteith G, Gidley M, Dietzgen R. Sequence diversity and differential expression of major phenylpropanoid-flavonoid biosynthetic genes among three mango varieties. BMC Genomics. 2015;16:561 pubmed publisher