20 documents found, page 1 of 2
Pre-crosslinked ozonized alginate-agar hydrogel with anthocyanin for advanced 3...
Yamashita, Camila; Moraes, Izabel Cristina Freitas; Haminiuk, Charles Windson Isidoro; Hilliou, L.; Branco, Ciro Cesar Zanini; Negreiros, Arthur TorresThree-dimensional (3D) printing technology has garnered significant attention for its versatility and potential in creating personalized materials and designs. This study explores the use of ozonized sodium alginate (SA), extracted from seaweed, as a base for hydrogel ink—where ozonation serves to enhance the material’s properties. Hydrogels based on either ozonized or commercial SA were developed by pre-crossl...
From the seaweeds`carrageenan composition to the hybrid carrageenans`hydrogel e...
Hilliou, Loic; Moraes, Izabel Cristina Freitas; Almeida, Pedro Lúcio; Marques de Almeida, PedroThe carrageenan composition of 12 commercial seaweeds used in the production of hybrid carrageenans (HC) is estimated from the analysis of solid-state NMR spectra and is systematically compared with the chemical structure of HC extracted in hot water. 1H NMR showed that the isolated HC contain from 5 to 80 mol% kappacarrageenan, from 90 to 10 mol% iota-carrageenan, while from 8 to 23 mol% biological precursors ...
Rheological and structural properties of K-carrageenan/xanthan gum gummies arch...
Valencia, German Ayala; Moraes, Izabel Cristina Freitas; Leandro, Gabriel Coelho; Hilliou, L.Biohybrids (BHs)based on bentonite and anthocyanins can be produced as alternatives to synthetic colorants. However, no information is available on the interaction of biohybrid with food system. This research studies the rheological properties of gummies containing k-carrageenan and xanthan gum incorporated with a BH. The incorporation of BH (≤2% w/w) increased the flow consistency index and shear thinning effe...
From the seaweeds’ carrageenan composition to the hybrid carrageenans’ hydrogel...
Hilliou, L.; Moraes, Izabel Cristina Freitas; Almeida, Pedro LúcioThe carrageenan composition of 12 commercial seaweeds used in the production of hybrid carrageenans (HC) is estimated from the analysis of solid-state NMR spectra and is systematically compared with the chemical structure of HC extracted in hot water. 1 H NMR showed that the isolated HC contain from 5 to 80 mol% kappacarrageenan, from 90 to 10 mol% iota-carrageenan, while from 8 to 23 mol% biological precursors...
Role of the molecular mass on the elastic properties of hybrid carrageenan hydr...
Gonçalves, Maria Gabriela Afonso; Faria, Bruno Miguel Silva; Moraes, Izabel Cristina Freitas; Hilliou, L.A set of carrageenans produced in the potassium form and with chemical structures varying from pure iota-carrageenans to nearly pure kappa-carrageenans is submitted to ultrasonication to reduce their molecular masses Mw while maintaining a constant chemical structure and a polydispersity index around 2. The kinetics of ultrasound-induced chain scission are found to be slower for polysaccharides richer in kappa-...
Hybrid carrageenans versus kappa–Iota-carrageenan blends: a comparative study o...
Monteiro, Maria Alice Freitas; Faria, Bruno; Moraes, Izabel Cristina Freitas; Hilliou, L.A comparison between the gel properties of blends of kappa- and iota-carrageenans (K+Is) and hybrid carrageenans (KIs) with equivalent chemical compositions is here presented. The objective is to assess under which conditions hybrid carrageenans are valuable alternative to blends of kappa- and iota-carrageenans for gelling applications and to contribute to the identification of phase-separated structures or co-...
Seaweeds biorefinery into pigments and carrageenans: testing a sequential extra...
Gonçalves, Gabriela; Moraes, Izabel Cristina Freitas; Faria, Bruno Miguel Silva; Hilliou, L.This study aims to test a sequential extraction (SE) method for red seaweeds (Chondrus crispus, Mastocarpus stellatus, Gigartina pistillata). The tested SE is a preliminary screening step towards the extrusion-based biorefinery (E2B2) of carrageenophytes into various natural products, a concept that still needs to be established. Phycobiliproteins, chlorophyll-a, carotenoids, and hybrid-carrageenans (HK) were i...
Architecting food gummies with hybrid carrageenans: Viscoelastic and structural...
Monteiro, Maria Alice Freitas; Faria, Bruno; Moraes, Izabel Cristina Freitas; Valencia, German Ayala; Hilliou, L.This study provides a comprehensive comparison of the thermal-rheological properties of hybrid carrageenans (κ and ι) and commercial κ/ι carrageenan blends (κ + ι), focusing on their application in gummy candy production. Hybrid carrageenans (six types, untreated and treated C, F, and J) successfully produced gel-like textures and demonstrated their potential as an alternative to commercial carrageenan blend sy...
Viscoelastic reversibility of carrageenan hydrogels under large amplitude oscil...
Moraes, Izabel Cristina Freitas; Hilliou, L.The viscoelastic response of carrageenan hydrogels to large amplitude oscillatory shear (LAOS) has not received much attention in the literature in spite of its relevance in industrial application. A set of hybrid carrageenans with differing chemical compositions are gelled in the presence of KCl or NaCl, and their nonlinear viscoelastic responses are systematically compared with mixtures of kappa- and iota-car...
Physicochemical properties, antioxidant potential and mineral content of Miconi...
Pasta, Paula Chiachia [UNESP]; Durigan, Giselda; Moraes, Izabel Cristina Freitas; Ribeiro, Leomara Floriano; Haminiuk, Charles Windson IsidoroMade available in DSpace on 2019-10-06T17:11:15Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-06-30; A balanced and healthy diet entails the consumption of fruits since they are an important source of phytochemicals rich in vitamins–antioxidants. Therefore, identifying new fruits which can be included in the human diet is necessary. Miconia albicans (Sw.) Triana is a tall shrub native to the Brazilian ...