371 documents found, page 1 of 38

O ensaio do micronúcleo em células da mucosa bucal: aplicabilidade em biomonito...

As exposições ambientais e ocupacionais a alguns agentes químicos ou físicos representam sérios riscos para a saúde humana. A biomonitorização humana (BMH) permite quantificar a exposição a substâncias químicas e seus efeitos precoces através da caracterização de biomarcadores de exposição e de biomarcadores de efeito. O ensaio do micronúcleo em células bucais (MNBMCyt) é um biomarcador precoce de genotoxicidad...

HBM4EU chromates study: the Portuguese integrated and harmonized study on expos...

In the scope of the European Union (EU) human biomonitoring initiative, a multicentric study on different occupational settings from several European countries was performed, to provide information on occupational exposure to hexavalent chromium [Cr(VI)], a known lung carcinogen. Biomonitoring approaches were used to obtain exposure data to support the implementation of new risk management measures and policy a...

Re‐evaluation of butane (E 943a), isobutane (E 943b) and propane (E 944) as foo...

The Panel on Food Additives and Flavourings (FAF) provides a scientific opinion re‐evaluating the safety of butane (E 943a), isobutane (E 943b) and propane (E 944) as food additives. Butane, isobutane and propane are short‐chain (C3–C4) alkanes, which are in gaseous state at room temperature. Their currently permitted use in food is in vegetable oil pan spray (for professional use only) and water‐based emulsion...

Assessing the impact of TiO2 nanomaterials on intestinal cells

Understanding the potential impact of nanomaterials (NMs) on human health requires further investigation into the organ-specific nano-bio interplay at the cellular and molecular levels. We showed increased chromosomal damage in intestinal cells exposed to some of in vitro digested Titanium dioxide (TiO2) NMs. The present study aimed to explore possible mechanisms linked to the uptake, epithelial barrier integri...

Biomonitorização humana e genotoxicidade ambiental: quatro décadas de investiga...

Re‐evaluation of pullulan (E 1204) as a food additive and new application for i...

The present opinion deals with the re‐evaluation of pullulan (E 1204) when used as a food additive and with the new application on the extension of use to several food categories. Pullulan (E 1204) is obtained by fermentation of a food‐grade hydrolysed starch with non‐genetically modified Aureobasidium pullulans ■■■■■. Based on the available information, the Panel considered that the manufacturing process of pu...

SCCS Opinion on Biphenyl-2-ol and Sodium 2-biphenylolate used in cosmetic produ...

Highlights: -o-Phenylphenol (OPP) is safe when used as preservative up to a maximum concentration of 0.2 % in rinse-off cosmetic products; - o-Phenylphenol (OPP) is safe when used as preservative up to a maximum concentration of 0.15 % in leave-on cosmetic products; - Sodium o-Phenylphenate is safe when used as preservative up to a maximum concentration of 0.2 % in rinse-off cosmetic products; - Sodium o-Phenyl...

Assessment of the Genotoxic Hazard of Estuarine Sediments Using an Integrative ...

Under the influence of multiple anthropogenic pressures, from industrial to agricultural activities, estuaries have long been regarded as particularly sensitive ecosystems to contamination. The present study aimed at investigating the genotoxic potential of a contaminated sediment sample from an urban and industrial area of the Sado Estuary, by combining the analysis of multiple endpoints in the <jats:italic>La...

Scientific opinion on the safety of a proposed amendment of the conditions of u...

The EFSA Panel on Food Additives and Flavourings (FAF Panel) provides a scientific opinion on the safety evaluation of a proposed amendment of the conditions of use of the food additive sorbitan monostearate (E 491) in accordance with Annex III, Part 3 to Regulation (EC) No 1333/2008, with respect to the intended use as a food additive in preparations of the food enzyme asparaginase (also known as acrylamide re...

Re‐evaluation of oxygen (E 948) and hydrogen (E 949) as food additives

The Panel on Food Additives and Flavourings (FAF) provides a scientific opinion re‐evaluating the safety of oxygen (E 948) and hydrogen (E 949) as food additives. Their currently permitted use in food in the European Union (EU) is in all food categories, including in foods for infants and young children at quantum satis (QS). They can also be used in food additive preparations, food enzymes and nutrients also a...