9 documents found, page 1 of 1
Microbial and sensory evaluation of Halophytes cultivated in a soilless system ...
Quintas, Célia; Ribeiro Lima, Alexandre; Gama, Florinda; Nunes, Carla; Salazar, Miguel; Barreira, LuísaThe increasing interest in halophytes as sustainable crops and their potential functional properties highlights the need to understand how cultivation conditions affect their quality for human consumption. The present study aimed to evaluate the influence of salinity on the microbial quality of the halophytes Disphyma crassifolium, Inula crithmoides, Mesembryanthemum nodiflorum, and Suaeda maritima, cultivated ...
Exopolysaccharides from porphyridium cruentum as a reinforcing agent for chitos...
Lazzarotto Cristofoli, Nathana; Ribeiro Lima, Alexandre; Costa, Sebastião; Silva, Carlos Manuel; Varela, João; Vieira, MargaridaMicroalgae exopolysaccharides (EPS), extracted from exhausted culture medium of Porphyridium cruentum, a rhodophyte able to grow in marine environments, may be useful as reinforcing agents in chitosan-based films produced by casting, using glycerol as a plasticizer. EPS were added at 1 and 2 % (w/v). The resulting hydrophilic films, EPS1 and EPS2, respectively, were opaquer than the control (CTR) chitosan-based...
PLA-based films reinforced with cellulose nanofibres from Salicornia ramosissim...
Ribeiro Lima, Alexandre; Lazzarotto Cristofoli, Nathana; Delahousse, Inès; Amaral, Renata A.; Saraiva, Jorge A.; Vieira, MargaridaBiocomposite films based on polylactic acid (PLA) reinforced with cellulose nanofibers (CNFs) extracted from Salicornia ramosissima by-products were developed and characterised using solvent casting (SC) and electrospinning (ES) techniques. The primary objective was to assess their suitability as sustainable food packaging materials that are compatible with high-pressure processing (HPP). The SC films exhibited...
Advances in the food packaging production from Agri-Food waste and by-products:...
Cristofoli, Nathana L.; Ribeiro Lima, Alexandre; Tchonkouang, Rose Daphnee; Quintino, Andreia; Vieira, MargaridaAgricultural waste has been a prominent environmental concern due to its significant negative impact on the environment when it is incinerated, disposed of in landfills, or burned. These scenarios promoted innovations in the food packaging sector using renewable resources, namely agri-food waste and by-products such as bagasse, pulps, roots, shells, straws, and wastewater for the extraction and isolation of bio...
Comparative study of the production of cellulose nanofibers from agro-industria...
Ribeiro Lima, Alexandre; Cristofoli, Nathana L.; Rosa Da Costa, Ana; Saraiva, Jorge A.; Vieira, MargaridaThe study of the suitability of two isolation processes to produce cellulose nanofibers (CNFs) from Salicornia ramosissima waste, with potential applicability as a reinforcing agent of polymeric composites was carried out. To separate the cellulose fibrils from the cell wall and obtain CNFs an alkaline treatment was applied followed by a bleaching treat-ment and, the insoluble residue was next hydrolyzed by eit...
Structural characterization of exopolysaccharides obtained from Porphyridium cr...
Cristofoli, Nathana L.; Ribeiro Lima, Alexandre; Rosa Da Costa, Ana; Evtyugin, Dmitry; Silva, Carlos; Varela, João; Vieira, MargaridaMicroalgae produce and secrete large quantities of polysaccharides into the culture medium that is discarded when biomass is separated. The main objective of this study was to add value to the exhausted culture medium (ECM) of Porphyridium cruentum through the recovery of extracellular polysaccharides (EPS) by different extracting and purifying methods for the future biotechnological applications. The ECM was s...
UV-C light: a promising preservation technology for vegetable-based nonsolid fo...
Tchonkouang, Rose Daphnee; Ribeiro Lima, Alexandre; Quintino, Andreia; Cristofoli, Nathana L.; Vieira, MargaridaA variety of bioactive substances present in fruit- and vegetable-processed products have health-promoting properties. The consumption of nutrient-rich plant-based products is essential to address undernutrition and micronutrient deficiencies. Preservation is paramount in manufacturing plant-based nonsolid foods such as juices, purees, and sauces. Thermal processing has been widely used to preserve fruit- and v...
Nutritional and functional evaluation of inula crithmoides and mesembryanthemum...
Ribeiro Lima, Alexandre; Gama, Florinda; Castañeda-Loaiza, Viana; Costa, Camila; Schueler, Lisa M.; Santos, Tamara; Salazar, Miguel; Nunes, CarlaThe nutritional composition and productivity of halophytes is strongly related to the biotic/abiotic stress to which these extremophile salt tolerant plants are subjected during their cultivation cycle. In this study, two commercial halophyte species (<i>Inula crithmoides</i> and <i>Mesembryanthemum nodiflorum</i>) were cultivated at six levels of salinity using a soilless cultivation system. In this way, it wa...
Wild vs cultivated halophytes: Nutritional and functional differences
Castañeda-Loaiza, Viana; Oliveira, Marta; Santos, Tamara; Schüler, Lisa M.; Ribeiro Lima, Alexandre; Gama, Florinda; Salazar, Miguel; Neng, N.R.Some halophyte plants are currently used in gourmet cuisine due to their unique organoleptic properties. Moreover, they exhibit excellent nutritional and functional properties, being rich in polyphenolics and vitamins. These compounds are associated to strong antioxidant activity and enhanced health benefits. This work compared the nutritional properties and antioxidant potential of three species (Mesembryanthe...