31 documents found, page 1 of 4
Effect of powdered rosemary (Rosmarinus officinalis) essential oil and phenolic...
Samouh, Khaoula Filali; Zinedine, Abdellah; Rocha, João M.; Chadli, Noureddine; Raoui, Sidi M.; Errachidi, FaouziThis work aims at exploiting the essential oil (EO) and phenolic compounds (PC) of rosemary (Rosmarinus officinalis) in a formulation containing leaf powder stabilized with chitin (1%, w/w) to improve chicken meat and investigate their effect on qualitatively and quantitatively broiler chickens’ growth performances. To such a purpose, chicks, at 1 day of age, were distributed in pens on ground divided into four...
Physicochemical and nutritional profile of leaves, flowers, and fruits of the e...
Neves, Marta; Antunes, Madalena; Fernandes, Wilson; Azevedo, Zélia M.; Freitas, Victor; Rocha, João M.; Tecelão, Carla; Campos, Maria J.Leaves, flowers and fruits from the edible halophyte chorão-da-praia (Carpobrotus edulis), harvested in the Portuguese western sea shores, were characterized regarding their proximate composition, fatty acid profile, pigments, phenolic compounds, antioxidant and antimicrobial activities. Fruits had the highest amount of carbohydrates (70.2 ± 1.6%) and the lowest of protein (4.67 ± 0.22%) and ash (22.0 ± 1.0%) c...
Physicochemical and nutritional characterization of the leaves, flowers and fru...
Neves, Marta; Antunes, Madalena; Azevedo, Zélia M.; Freitas, Victor; Rocha, João M.; Tecelão, CarlaLeaves, flowers and fruits from the edible halophyte Chorão da praia (Carpobrotus edulis), harvested in Portuguese west shores, were characterized regarding their proximate composition, phenolic compounds and antioxidant activity. Flowers and leaves had similar protein content (5.42±0.15 and 5.22 ±0.13 % DW, respectively), being higher than fruits (4.67±0.22 %). No significant differences were observed in the l...
Edible biodegradable agar-based films and coatings in ready-to-eat strawberries...
Rocha, João M.; Sousa, Ana M. M.; Santos, Joana; Gonçalves, Raquel; Perez-Gregorio, M. Rosa; Freitas, Victor; Oliveira, M. Beatriz; Gonçalves, M. Pilar[Extrato] Despite the general awareness for the sustainability of our Planet, nonbiodegradable petroleum-based synthetic polymers still the foremost food packaging materials, mainly due to their availability, low-cost and functionality. Conversely, there is an increasing consumer’s demand for natural products, with minimal additives and free of synthetic elements in contact with foods. In this context, packagin...
Direct PCR-free electrochemical biosensing of plant-food derived nucleic acids ...
Pereira-Barros, Magda A.; Barroso, M. Fátima; Martín-Pedraza, Laura; Vargas, Eva; Benedé, Sara; Villalba, Mayte; Rocha, João M.; Campuzano, SusanaA novel and disposable electrochemical biosensor for PCR-free and selective detection of Sola l 7, a non-specific lipid transfer protein (nsLTP) found in tomato seeds associated to severe symptoms of tomato-allergic patients, is reported in this work. The methodology involves the formation of DNA/RNA heterohybrids by sandwich hybridization of a specific fragment of the Sola l 7 allergen coding sequence with app...
Comprehensive review on the interaction between natural compounds and brain rec...
Silva, Ana R.; Grosso, Clara; Delerue-Matos, Cristina; Rocha, João M.Given their therapeutic activity, natural products have been used in traditional medicines throughout the centuries. The growing interest of the scientific community in phytopharmaceuticals, and more recently in marine products, has resulted in a significant number of research efforts towards understanding their effect in the treatment of neurodegenerative diseases, such as Alzheimer's (AD), Parkinson (PD) and ...
Quality improvement of traditional dry fermented sausages based on innovative t...
Rocha, João M.; Elias, Miguel N.Dry fermented sausages are highly appreciated food specialties, mainly in Portugal and other southern European countries. Therefore, all research efforts aiming at improving the food quality and safety of traditional dry sausages are of interest, since they are likely to result in products with higher added value and quality standards most suited to the requirements and concerns of the modern consumers. Among t...
EFFECT OF SALT REDUCTION ON THE SAFETY AND STABILITY OF TRADITIONAL BLOOD DRY-C...
Laranjo, Marta; Gomes, Ana; Agulheiro-Santos, A.C.; Potes, M.E.; Cabrita, Maria J.; Garcia, Raquel; Rocha, João M.; Roseiro, Luísa C.Health issues such as cardiovascular disease are often due to dietary habits. Thus, meat industry needs to reduce salt in their products. However, production of low-salt content dry-cured not affected. The current study evaluated the effect of salt reduction from 6% to 3% in two Portuguese traditional blood dry-cured sausages. Physicochemical and microbiological parameters, biogenic amines content, fatty acids ...
Novel polylactic acid (PLA)-based active packaging with incorporation of nanopa...
Rocha, João M.; Lorite, Gabriela S.; Miilumäki, Noora; Saavalainen, Paula; Selkälä, Tuula; Morales-Cid, Gabriel; Gonçalves, M. Pilar; Pongrácz, EvaThis study aimed at developing innovative and environmentally friendly packages for fresh-cut fruits and at a better understanding their effect on physicochemical, mechanical and microbiological characteristics during shelf-life. Packages were developed under the scope of EU project SusFoFlex (7th framework programme) – thought to incorporate materials in final packaging formulations complying environmental and...
On the correlation between physicochemical properties of agar and its performan...
Rocha, João M.; Sousa, Ana M. M.; Santos, Joana; Alves, Rita; Gonçalves, Raquel; Oliveira, M. Beatriz; Gonçalves, M. Pilar; Rocha, Cristina M. R.Agar is a biopolymer extensively used as gel and stabilizer. Depending on red seaweeds and agar extraction protocols, different physicochemical properties are attained. This research aimed at a better understanding the agar’s physicochemical properties effect on agar coatings performance to improve shelf-life of fresh fruits. Agar was extracted from red algae Gracilaria vermiculophylla in presence or absence of...