Results 81 to 90 of about 911 (180)

Antimicrobial and autophototoxic effects of norharmane in termites

open access: yes, 2004
The fluorescent alkaloid norharmane has been isolated from Reticulitermes termites and characterized by microcoil 1H NMR, UV/Vis, mass spectrometry and GC/MS. This is the first report of norharmane in insects, which is the major component in termite fluorescence under ultraviolet light.
Siderhurst, Matthew Samuel, author   +4 more
openaire   +2 more sources

Risk assessment of grilled and barbecued food

open access: yesFood Risk Assess Europe, Volume 2, Issue 2, April 2024.
Summary Background It is well‐known that heat treatment of food, such as grilling and frying may give rise to unwanted, harmful substances in food, so‐called process contaminants. VKM summarized this in the previous risk assessment of grilled food from 2007. In 2022, the Norwegian Food Safety Authority asked VKM to update and summarize the knowledge on
Espen Mariussen   +11 more
wiley   +1 more source

Differential effects of dopamine melanin on norharman-induced toxicity in PC12 cells

open access: yes, 2007
The food contaminant norharman structurally resembles MPTP a compound that selectively damages pigmented brain areas. Both compounds are sequestered and retained in melanin-containing neurons.
Lindquist, Nils Gunnar,   +2 more
core   +1 more source

Evaluation of a derogation application for deep‐frying meat products in oil at a temperature higher than 180°C

open access: yesFood Risk Assess Europe, Volume 2, Issue 2, April 2024.
Abstract A food chain operator submitted an application to the FASFC for a derogation for deep‐frying meat products in oil at a temperature higher than 180°C. The legal maximum temperature is 180°C and a tolerance of 2°C is permitted by the FASFC. During the deep‐frying process of meat products in sunflower oil, the operator allows for 182°C to be ...
Ken Houben   +6 more
wiley   +1 more source

Clearing the Smoke: What Protects Smokers from Parkinson's Disease?

open access: yesMovement Disorders, Volume 39, Issue 2, Page 267-272, February 2024.
Abstract The link between smoking and a lower risk of Parkinson's disease (PD) is one of the strongest environmental or lifestyle associations in neuroepidemiology. Growing evidence supports the hypothesis that the association is based on a neuroprotective effect of smoking on PD, despite the plausible alternative that smoking serves as a marker for a ...
Kenneth N. Rose   +2 more
wiley   +1 more source

Effect of ingestion diet treated with harman and norharman on pupation of Galleria mellonella larvae.

open access: yes, 2018
1H- harman 750 ppm, 2H- harman 1000 ppm, 3H- harman 1250 ppm. 1N- norharman 750 ppm, 2N- norharman 1000 ppm, 3N- norharman 1250 ppm. The day of administration of the alkaloids (final larval instar day 3) is marked with the arrow.
Anna Katarzyna Wrońska (4922722)   +3 more
core   +1 more source

Monoamine oxidase inhibitory activity in tobacco particulate matter: Are harman and norharman the only physiologically relevant inhibitors?

open access: yes, 2019
Monoamine oxidase inhibition is significant in smokers, but it is still unclear how the inhibition that is seen in the brains and bodies of smokers is brought about. Our aim was to test the contribution of the harman and norharman in tobacco smoke to MAO-
Katharine A. Brennan (6651969)   +2 more
core   +1 more source

SBSE(EG-Silicone)-UFLC-MS/MS and HPLC-Flu Analysis of Norharman in Passiflora edulis Rinds

open access: yes, 2019
Previous studies on Passiflora edulis (sour passion fruit) rinds reported some biological activities and there is a growing interest on rinds flour as a possible functional food, but its alkaloid composition was not detailed investigated.
Vítor F. Freire (4985603)   +2 more
core   +1 more source

Inhibitory Effect of Rosa rugosa Tea Extract on the Formation of Heterocyclic Amines in Meat Patties at Different Temperatures

open access: yesMolecules, 2016
In previous studies, heterocyclic amines (HCAs) have been identified as carcinogenic and a risk factor for human cancer. Therefore, the present study was designed to identify bioactive natural products capable of controlling the formation of HCAs during ...
Muneer Ahmed Jamali   +5 more
doaj   +1 more source

Craving for cigarettes among low and high dependent smokers: impact of norharman

open access: yes, 2003
Item does not contain fulltextBesides nicotine, other chemicals in tobacco smoke, such as norharman, may contribute to the addictive properties of cigarettes.
Spijkerman, R.   +2 more
core   +1 more source

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