Este trabalho objetivou analisar qualitativamente e por parâmetros estabelecidos em normativas, méis comercializados em pequenas propriedades do Sul do Brasil visando a detecção de fraude. As cinco amostras de mel foram submetidas a análises de Reação de Fiehe, Lugol e Lund, além de adição de corantes, acidez total e pH, nas quais todas as amostras não apresentaram indícios de fraude e o pH estabeleceu-se na faixa de 3. Assim constata-se que análises para fraude de méis podem ser realizadas através de testes analíticos qualitativos clássicos.

Strawberry needs available nutrients in substrate in order to promote its development to produce fruits with suitable nutritional properties. When a nutrient is deficient, the plant expresses this imbalance by visual symptoms which are manifested mainly through changes in the leaves, such as color, size and others, since this is the organ of the plant in full physiological and chemical activity (^{Gonçalves et al., 2006}).

The insertion of antibiotics in water resources results from anthropogenic sources; however, at residual concentrations, they characterize potential risks to the ecosystem, such as the emergence of multi-resistant bacteria. It is necessary to develop technologies to provide sustainable solutions for low- and middle-income countries. Thus, the present study aims to evaluate the ability to remove the antibiotic ciprofloxacin (CPX) with a biosorbent produced with pecan shells (PSB). The PSB structure was determined by scanning electron microscopy and spectroscopy in the infrared region by Fourier Transform. For adsorption assays, solutions of 10 mg L⁻¹ of CPX were used. The results show that the process reaches equilibrium at 240 min, and follows the pseudo-second order model kinetic and the Freundlich equilibrium model. The increase in temperature and the pH variation of the solution strongly influence the process. In general, the adsorption of CPX using PS is a potential method for treating water and contaminated effluents, as well as being a low-cost method; this is because it uses a byproduct from the agricultural industry that results in a reduction of approximately 60% of the antibiotic load contained in the liquid effluent.