40 documents found, page 1 of 4
Strategies to increase prebiotic activity and neurotrophic potential through di...
Silva, Soraia P.; Gonzalez, Abigail; Roupar, Dalila; Salvador, Andreia Filipa Ferreira; Bastos, Rita; Mota, Mariana; Luís, Maria H.; Ferreira, Sónia S.Soluble polysaccharides and oligosaccharides are prebiotic compounds that promote the growth of beneficial gut bacteria and contribute to improved health. Industrial juice production results in juices with moderate amounts of soluble dietary fibre because most polysaccharides that constitute the dietary fibre are retained in the pulp. Incorporation of glucanases and pectinases into the juice production process ...
Structural characterization and in vitro gut microbiota fermentation of a polys...
Silva, Francisca Crislândia Oliveira; Araújo, Maria Isabela Ferreira de; Silva, Soraia P.; Coelho, Elisabete; Santos, Aline Teixeira dosThis study aims to structurally characterize a polysaccharide extracted from Cenostigma nordestinum gum (AGCn) and evaluate its prebiotic potential in human gut microbiota. AGCn, obtained by dissolution in water and precipitation in 70 % ethanol, was primarily composed of carbohydrates (93.61 %), with a low protein content (1.70 %) and some phenolic compounds (9.16 % Gallic Acid Equivalents). Its molecular weig...
Cordia africana fruit hydrocolloid alleviates sodium dextran sulfate-induced co...
Araújo, Maria Isabela Ferreira de; Silva, Francisca Crislândia Oliveira; Fernandes, Ana; Silva, Soraia Pires; Batista, José Josenildo; Coelho, ElisabeteCordia africana fruit contains a mucilaginous pulp rich in hydrocolloid with nutraceutical potential, whose composition and bioactive potential remain uncertain. This study evaluated its structural characterization, toxicity and ability to prevent DSS-induced ulcerative colitis in mice. The hydrocolloid was extracted with hot water and precipitated with ethanol (1:3 v/v), yielding 7.2 % (w/w). The extracted hyd...
Valorisation of olive oil by-products into pectic- and glucuronoxylo-oligosacch...
Cordeiro, Ana; Fernandes, Andreia; Ferreira, Andreia S.; Coelho, Elisabete; Coimbra, Manuel A.; Silvério, Sara C.; Cadavez, Vasco; Peres, António M.Olive pomace (OLP) and stones (OLS) are key by-products of olive oil production, rich in lignocellulose and pectin, making them viable substrates for prebiotic oligosaccharide (OS) production. This study evaluated the chemical composition of OLP and OLS powders (OLPp and OLSp) and their potential for OS production through one-step fermentation using recombinant Bacillus subtilis 3610. Both substrates had compar...
Valorisation of olive oil by-products into pectic- and glucuronoxylo-oligosacch...
Cordeiro, Ana; Fernandes, Andreia; Silvério, Sara Isabel Cruz; Coelho, Elisabete; Coimbra, Manuel A.; António M. Peres; Rodrigues, L. R.Olive pomace (OLP) and stones (OLS) are key by-products of olive oil production, rich in lignocellulose and pectin, making them viable substrates for prebiotic oligosaccharide (OS) production. This study evaluated the chemical composition of OLP and OLS powders (OLPp and OLSp) and their potential for OS production through one-step fermentation using recombinant Bacillus subtilis 3610. Both substrates had compar...
Industrial byproduct pine nut skin factorial design optimization for production...
Silva, Soraia P.; Ferreira-Santos, Pedro; Lopes, Guido R.; Reis, Sofia F.; González, Abigail; Nobre, Clarisse; Freitas, Victor; Coimbra, Manuel A.Pine nut skin (Pinus pinea L.) is a poorly explored industrial byproduct with potential to be utilized as a food ingredient. Subcritical water extraction (SWE), an eco-friendly extraction technique with higher efficiency than hot-water extraction (HWE), was studied to evaluate its suitability in producing extracts rich in soluble fiber and phenolic compounds. For this, a factorial design was developed consideri...
Covalent connectivity of glycogen in brewer's spent yeast cell walls revealed b...
Bastos, Rita; Marín-Montesinos, Ildefonso; Ferreira, Sónia S; Mentink-Vigier, Frédéric; Sardo, Mariana; Mafra, Luís; Coimbra, Manuel AYeast cell walls undergo modifications during the brewing process, leading to a remodelling of their architecture. One significant change is the increased insolubility of the cell wall glycogen pool, likely due to the formation of covalent bonds between glycogen and cell wall polysaccharides. To verify this hypothesis, we extracted the brewer's spent yeast with 4 M KOH, obtaining an insoluble glucan fraction (A...
Sustainable exopolysaccharide production by rhizobium viscosum CECT908 using co...
Gudiña, Eduardo José; Couto, Márcia R.; Silva, Soraia P.; Coelho, Elisabete; Coimbra, Manuel A.; Teixeira, J. A.; Rodrigues, L. R.Microbial exopolysaccharides (EPS) are promising alternatives to synthetic polymers in a variety of applications. Their high production costs, however, limit their use despite their outstanding properties. The use of low-cost substrates such as agro-industrial wastes in their production, can help to boost their market competitiveness. In this work, an alternative low-cost culture medium (CSLM) was developed for...
Food Ingredients Derived from Lemongrass Byproduct Hydrodistillation: Essential...
Rodrigues, Luís; Coelho, Elisabete; Madeira, Renata; Teixeira, Pedro; Henriques, Isabel; Coimbra, Manuel A.Essential oil (EO), hydrolate, and nondistilled aqueous phase (decoction) obtained from the hydrodistillation of lemongrass byproducts were studied in terms of their potential as food ingredients under a circular economy. The EO (0.21%, dry weight basis) was composed mainly of monoterpenoids (61%), the majority being citral (1.09 g/kg). The minimal inhibitory concentrations (MIC) of lemongrass EO against Escher...
Evaluation of microbial‐fructo‐oligosaccharides metabolism by human gut microbi...
Roupar, Dalila; Coelho, Marta C.; Gonçalves, Daniela A.; Silva, Soraia P.; Coelho, Elisabete; Silva, Sara; Coimbra, Manuel A.; Pintado, ManuelaThe prebiotic potential of fructo‐oligosaccharides (microbial‐FOS) produced by a newly isolated Aspergillus ibericus, and purified by Saccharomyces cerevisiae YIL162 W, was evaluated. Their chemical structure and functionality were compared to a non‐microbial commercial FOS sample. Prebiotics were fermented in vitro by fecal microbiota of five healthy volunteers. Microbial‐FOS significantly stimulated the growt...