In order to screen out the preservatives that had better effects on inhibiting white-blush of freshcut carrots, prolong its shelf life. Using fresh carrots as test material, different treatments fresh-cut during storage were compared, and changes in whiteness value each group analyzed. Other relevant physical chemical indicators measured. The results showed compared with other treatment groups,...

Polydiacetylene (PDAs) is a special semiconductor polymer with an alternating conjugated structure of ene-acetylene and unique optical electronic properties. Typically, PDAs change from blue to red in response the external stimuli, such as temperature, pH, ions, organic solvents, pressure, donor-acceptor interactions. This colorimetric makes them one excellent materials for chemical or biosenso...

Long-term use of topical drugs has clearly been shown to induce toxic immunopathological changes in the ocular surface. Lacunae exist in the knowledge regarding the respective roles of active compounds and preservatives. The preservatives used in topical multidose ophthalmic preparations are responsible for a considerable compromise of ocular surface. In chronic diseases like glaucoma where lon...

INTRODUCTION Preservatives are added to cosmetic, household cleaning, and other industrial products to prevent the growth of microorganisms. Unfortunately, exposure to these substances can cause sensitization. MATERIAL AND METHODS Between January and June 2015, we analyzed the ingredients of 2300 products commercially available in Spain to identify the frequency of a wide variety of preservat...

AIM The objective of this study was to understand the adaptive mechanisms in Enterobacter gergoviae which are involved in recurrent contaminations in cosmetic products that are incorporated with preservatives. METHODS AND RESULTS Bacterial strains from two backgrounds were examined for a profound understanding of the mechanisms of adaptation against preservatives. It included a series of Ent....

BACKGROUND Preservatives present in cosmetics and other industrial products can cause allergic contact dermatitis. The aim of the study was to assess the frequency of allergy to selected preservatives in consecutive patients examined due to contact dermatitis in the Nofer Institute of Occupational Medicine, Łódź, and to establish whether individuals sensitized to formaldehyde react simultaneous...