Serra da Estrela Protected Designation of Origin (PDO) cheese is the most famous Portuguese cheese and has a high commercial value. However, the adulteration of production with cheaper/lower-quality milks from non-autochthones ovine breeds compromises the quality of the final product and undervalues the original PDO cheese. A Randomly Amplified Polymorphic DNA (RAPD) method was developed for ef...

Throughout the history of workplace drug testing, individuals have attempted to subvert their drug test results to mask their use of illegal drugs. Urine workplace specimens have been subject to tampering, from early attempts involving household chemicals and simple dilution or substitution to current attempts using the multitude of readily available commercial adulteration and substitution pro...

The objective of this project was to investigate the trends of changes in the crystal morphology of cocaine in the presence of the common adulterants, caffeine and lidocaine HCl. By performing gold chloride microcrystal tests on samples of cocaine with adulterants at 10, 20, and 50% concentrations, trends in the changes of the crystal morphology can be linked to specific adulterants and concent...

An integrated approach including chemical and biological assessments was developed to investigate the differences between Apocynum venetum L. (AV) and its adulterant, Apocynum pictum Schrenk (AP). Ten flavonoids were tentatively identified by ultra-visible and mass spectra data. The chemical component, hyperoside, was identified as a critical parameter for discrimination of two species from the...

Abstract A rapid and high-performance sensor for lard adulterant in edible oil was developed using the tapered plastic optical fiber (POF) coated with graphene multi-walled carbon nanotubes. The coating material deposited onto a POF taper waist diameter length of 0.45 mm 1 cm, respectively. addition used to increase sensitivity selectivity coefficient toward substance. sensing mechanism is base...

Wider availability but lack of legal market trades has given feline meat a high potential for use as an adulterant in common meat and meat products. However, mixing of feline meat or its derivatives in food is a sensitive issue, since it is a taboo in most countries and prohibited in certain religions such as Islam and Judaism. Cat meat also has potential for contamination with of severe acute ...

In this work, we quantified goat milk powder adulteration by adding urea, melamine, and starch individually simultaneously, with the utilization of near infrared (NIR) spectroscopy coupled chemometrics. For single-adulterant samples, successive projections algorithm (SPA) selected three, four optimal wavelengths for starch, respectively. Models were built based on partial least squares regressi...

Mercury, hydroquinone and tretinoin are the most common adulterant chemicals used in cosmetic products nowadays. This paper focuses on consumers’ awareness knowledge regarding current issues. Parameters to determine their level of these three chemicals. study also examines relationship between safety behavior when selecting product market. A cross-sectional was conducted Putrajaya 313 responded...