Sixteen polycyclic aromatic hydrocarbons (PAHs) have been identified in Brazilian sugarcane spirits. Contamination sources are: sugarcane burn before harvest and petroleum derivatives. PAHs concentration in spirits produced from burned cane was about 2-3 times higher than those from unburned cane. Benzo(a)pyrene (BaP) is present at less than 1%, and therefore is not a representative marker of cachaça contamination by PAHs. Ethyl carbamate (EC) is produced during both fermentation and distillation. During distillation, cupric ions may catalyse the conversion of cyanide to EC. In discontinuous distillation, the use of the heart fraction for bottling cachaça considerably decreases its concentration. In the continuous process, in which there is no separation of distillate, it is highly recommended to couple cooling devices and reflux systems to the distillation column. Consumers are at a greater risk of EC exposure from cachaça than from any other spirit.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.foodchem.2013.10.088 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Dynamic characteristics of a compliant seat coupled with the human body and a manikin during the exposure to the whole-body vibration: effect of the polyurethane foam, the track position and the measurement location.
Acta Bioeng Biomech
June 2024
2Institute of Sound and Vibration Research, University of Southampton, United Kingdom.
Transmissibility is used to assess dynamic responses of the occupant-seat system, and most studies have exclusively assessed the transmissibility from the floor to the cushion or the backrest surface with the human body. In this investigation, the vertical vibration transmitted from the floor to six specific locations both on the seat surface and the frame when the seat was fixed on three positions on the track was examined utilizing an SAE J826 manikin and 12 male adults (0.25 to 20 Hz) for a duration of 120 seconds at three vibration amplitudes.
View Article and Find Full Text PDFReport on Evolving Indications, Technique, and Outcomes of Novel And Surgical Procedures-NUsurface.
Curr Rev Musculoskelet Med
January 2025
Banner University of Arizona-Phoenix, 7400 N Dobson Rd, Scottsdale, AZ, 86256, U.S.A..
Purpose Of Review: Meniscectomy alters knee function and known to be associated with an increased incidence of knee arthritis. Several methods and materials have been tried to replicate the function of a meniscus. One is a polycarbonate-urethane synthetic medial meniscus implant labeled as NUsurface.
View Article and Find Full Text PDFComparative Evaluation of Surface Roughness and Color Stability of Polyetheretherketone with Conventional Interim Prosthetic Materials: An Study.
J Contemp Dent Pract
October 2024
Department of Prosthodontics, Government Dental College, Kozhikode, Kerala, India, Orcid: https://orcid.org/0000-0003-1456-3851.
Aim: The aim of this study was to compare the surface roughness and color stability of polyetheretherketone (PEEK) with those of conventional interim prosthetic materials like polymethylmethacrylate, bis-acrylic composite, and rubberized diurethane dimethacrylate, following immersion in solutions of varying pH value.
Materials And Methods: A total of 320 circular discs with 10 mm diameter and 2 mm height were divided based on the fabrication ( = 80)-group A: polymethylmethacrylate; group B: bis-acrylic composite; group R: rubberized diurethane; and group P: hot-pressed PEEK-and were subjected to baseline measurement of roughness ( = 40) and color ( = 40) using 3D profilometer and UV-Vis spectrophotometer, respectively. Later, 10 samples from each group were immersed in distilled water, black coffee, green tea, and Pepsi, respectively, for 120 days, and measurements of roughness and color were repeated.
Influence of dual-cure resin-cement curing modes on gingival cytotoxicity and inflammatory responses.
J Dent Sci
January 2025
Division of Molecular & Regenerative Prosthodontics, Tohoku University Graduate School of Dentistry, Sendai, Japan.
Background/purpose: Dual-cure resin-cements are used for various dental restorations. However, whether the curing modes of these resin-cements influence gingival inflammation remains unclear. Hence, herein, we evaluated the effects of dual-cure resin-cement curing modes on gingival cytotoxicity and inflammatory responses.
View Article and Find Full Text PDFBrain state-dependent neocortico-hippocampal network dynamics are modulated by postnatal stimuli.
J Neurosci
January 2025
Department of Integrative Anatomy, Nagoya City University Graduate School of Medicinal Sciences.
Neurons in the cerebral cortex and hippocampus discharge synchronously in brain state-dependent manner to transfer information. Published studies have highlighted the temporal coordination of neuronal activities between the hippocampus and a neocortical area, however, how the spatial extent of neocortical activity relates to hippocampal activity remains partially unknown. We imaged mesoscopic neocortical activity while recording hippocampal local field potentials in anesthetized and unanesthetized GCaMP-expressing transgenic mice.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!