Search results for "Aliment"

Full inhibition of enzymatic browning in the presence of thiol-functionalised silica nanomaterial

2018

[EN] Darkening processed fruits and vegetables is caused mainly by enzymatic browning through polyphenol oxidase (PPO) action. Accordingly, we explored the potential of four silica-based materials (MCM-41 nanometric size, MCM-41 micrometric size, UVM-7 and aerosil), non-functionalised and functionalised with thiol groups, to inhibit PPO activity in the model system and apple juice. All materials showed relevant performance when immobilising and inhibiting PPO in model systems, and support topology is a main factor for enzyme immobilisation and inhibition. Thiol-containing silica UVM7-SH showed the greatest inactivation, and similar browning values to those obtained by acidification. The enz…

Influence of the functionalisation of mesoporous silica material UVM-7 on polyphenol oxidase enzyme capture and enzymatic browning

2020

Polyphenol oxidase (PPO), also known as tyrosinase and catechol oxidase, is the enzyme responsible for enzymatic browning in foods. It causes undesirable organoleptic, nutritional and colour changes. Here, we report the preparation of five nanomaterials and a study of their ability to modulate PPO enzyme activity. The materials consist of UVM-7 supports (a mesoporous silica material) modified with diverse functional groups (i.e. amine, carboxylic acid, isocyanate, alkane and pyridine). We also studied the PPO immobilisation capability of the materials. All the materials, except the carboxylic acid functionalised one, offer high PPO loading capabilities and the immobilisation speed increases…

La formation des préférences alimentaires

2005

Chapitre 21; National audience

Il pane a tavola. Modelli di produzione e fruizione etno-dialettali

2008

Maternal and paternal feeding practices : links with young children’s eating behaviours and influencing factors : a systemic approach.

2021

Parents play a key role in the development of children’s eating preferences and behaviours. This doctoral project aimed to gain more insight into the feeding practices mothers and fathers use for pre-schoolers in France and Denmark. Four studies, combining quantitative and qualitative methods, were conducted to study the links between maternal and paternal feeding practices/styles and child eating behaviours, possible predictors of parental feeding and portioning practices, and gender differences in feeding practices and parental involvement in child feeding. Special attention was also paid to cultural influences and how changes in the context (due to the COVID-19 pandemic) can influence ea…

Chapitre 12. L’apport sociétal de la pasteurisation des aliments face à son coût énergétique

2015

International audience

Bienes comunes de la humanidad

2003

EFFECT OF ADDING SOLID AND MOLTEN CHOCOLATE ON THE POLYPHENOL CONTENT, CHEMICAL, TEXTURAL, MICROBIOLOGICAL AND SENSORY ASPECTS OF PECORINO SICILIANO …

In this project we used two specific food products, which are typically Sicilian, Pecorino Siciliano cheese and Modica chocolate, that have unique texture and taste. “Chocolate cheese” is produced with the aim of increasing the consumption of cheese especially among children, targeting the purpose of improving public health. In this research we investigated chocolate cheese including solid and molten chocolate in three levels of 5%, 10% and 15% at four ripening times (T0 = fresh, T1 = 2 weeks, T2 = 4 weeks and T3 = 6 weeks). The results showed that the addition of chocolate significantly (p ≤ 0.05) decreased the pH, ash and protein content of the Pecorino Siciliano cheese, whereas it had no…

Alimentación del niño diabético: conceptos generales de la población médica no especializada

1992

Alimentación del niño diabético: conceptos generales de la población médica no especializada

Weight-teasing and eating disorders-a comparative study in adolescent and adult samples

2022

Disordered eating, unhealthy weight-control behaviours and body dissatisfaction are associated with diminished mental health. A key aspect that has been identified for the development of disordered eating behaviours and body dissatisfaction is to be teased. Additionally, the literature suggests that weight may affect the relationship between weight-teasing and disordered eating and body dissatisfaction, although this pattern is unclear. This study presents two cross-sectional studies with an adult and an adolescent sample. The adolescent sample comprised 15,224 participants, and the adult sample comprised 321 participants, all from Spain. Hierarchical regression analyses were conducted. Aim…