A simple, sensitive, reliable and economical method was developed for the determination of paraquat (a widely used herbicide) in four edible vegetables (cabbage, lettuce, spinach and Chinese cabbage) using high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS-MS). The samples were extracted with water under sonication and cleaned up by weak cation exchange solid-phase extract...

Scarcity of protein rich food and food supplements are responsible for protein-energy malnutrition particularly among children and lactating women in the developing countries. Legumes and some dicotyledonous seeds constitute important sources of protein as well as energy. Bioprospecting of such unconventional sources is able to provide food security, agricultural development, self-dependence an...

An HPLC method with fluorescence detection has been developed for determination of eight polycyclic aromatic hydrocarbons (PAH) with four to six condensed aromatic carbon rings in edible oils and smoked products. The method employs preparative size-exclusion chromatography for efficient one-step lipid removal without saponification; benzo[b]chrysene is used as internal standard for quantificati...

BACKGROUND Identifying factors influencing plant management allows understanding how processes of domestication operate. Uncertain availability of resources is a main motivation for managing edible plants, but little is known about management motives of non-edible resources like medicinal and ceremonial plants. We hypothesized that uncertain availability of resources would be a general factor m...

The presence of antimicrobial agents in edible tissues of food-producing animals remains a major public health concern. Probabilistic modeling techniques incorporated into a physiologically based pharmacokinetic (PBPK) model were used to predict the amounts of sulfamethazine residues in edible tissues in swine. A PBPK model for sulfamethazine in swine was adapted to include an oral dosing route...

Angiotensin I-converting enzyme (ACE) is known to catalyze the conversion of angiotensin-I to angiotensin-II, which is the biologically active peptide elevating blood pressure, thereby being implicated in the pathogenic process of hypertension. Therefore, ACE inhibitory substances are expected to reduce the blood pressure in hypertensive patients. Then, the aqueous extracts were prepared from t...

A new method for determining the acid values (AVs) of edible oils based on the OH stretching band was developed. The oil sample was diluted with carbon tetrachloride and was placed in a quartz cuvette with a thickness of 1cm to record the FTIR spectrum. The peak at 3535cm(-1), which corresponds to the OH stretch of the carboxyl group in free fatty acids, together with the peak valley at 3508cm(...