New Perspective on the Use of α-Bisabolol for Weed Control.

The indiscriminate use of synthetic herbicides reduces its effectiveness. Bioherbicides produced with metabolites emerge as an alternative to managing weeds. We aimed to analyze the phytotoxic potential of the essential oil of Vanillosmopsis arborea (EOVA) and the α-bisabolol molecule, its main component. We evaluated the effects of EOVA and α-bisabolol at different concentrations on the germination, growth, antioxidant metabolism, and photosynthesis of different species. EOVA and α-bisabolol showed promising phytotoxic effects on the germination and initial growth of the weed Senna occidentalis, inhibiting the activity of the antioxidant enzymes and increasing lipid peroxidation. α-Bisabolol reduced the weed seedling growth by inducing oxidative stress, which suggests a greater role in postemergence. Moreover, in the weed postemergence, both EOVA and α-bisabolol caused damage in the shoots, reduced the chlorophyll content, and increased lipid peroxidation besides reducing photosynthesis in S. occidentalis. Overall, we suggest the promising action of α-bisabolol and EOVA as bioherbicides for weed control.

A new computational method for hepatic fat microvesicles counting in histological study in rats.

Liver steatosis was once believed to be a benign condition, with rare progression to chronic liver disease. Thus, in both clinical and experimental practice, it is fundamental to have a reliable and objective method for its precise quantification. An image analysis algorithm was developed and validated for automatically and rapidly quantifying hepatic fat microvesicles. The image processing algorithms automatically segmented interstitial steatosis areas and analyzed the threshold region. Automatic quantifications did not significantly differ from manual evaluations of means of the same areas. Comparison of our image analysis quantifications with staging of histologic evaluations of liver steatosis presented significant correlations that are based on the distribution patterns and on the area quantity of steatosis, respectively. The use of algorithms for analysis and image processing is a sensitive, precise, objective and reproducible method of quantifying hepatic fat microvesicles, which complements semi-quantitative histologic evaluation systems.

Quantificação e análise do custo da sobra limpa em unidades de alimentação e nutrição de uma empresa de grande porte / Quantification and analysis of the cost of food wastage in the cafeterias of a large company

OBJETIVO:O propósito deste estudo foi quantificar e avaliar o custo da sobra limpa em oito unidades de alimentação e nutrição de uma empresa siderúrgica de grande porte. MÉTODOS: Foram avaliadas oito unidades de alimentação e nutrição durante cinco meses. A quantificação da sobra limpa considerou as sobras e o número de refeições planejadas e servidas diariamente. As preparações foram divididas em grupos, sendo os custos obtidos a partir do valor médio dos alimentos adquiridos no mês. RESULTADOS: Cinquenta por cento das unidades de alimentação e nutrição não atingiram valores inferiores ou iguais a 30g, meta per capita de sobra limpa determinada pela empresa. Os per capitas totais de sobra limpa variaram entre 24g e 60g, equivalentes a 176kg-1.213kg de alimentos desperdiçados mensalmente. As saladas apresentaram as maiores porcentagens de desperdício na maioria das unidades. O custo mensal com as sobras atingiu de 2,2 por cento a 3 por cento do valor gasto mensalmente com alimentos, representando um custo elevado para a empresa (entre 80 a 108 salários-mínimos). Diante dos resultados obtidos, foram propostas medidas de intervenção, tais como planejamento e elaboração adequada das preparações, caracterização dos clientes e ações para educação nutricional. CONCLUSÃO: As unidades de alimentação e nutrição apresentaram considerável perda de alimentos com a sobra limpa. A implementação das intervenções propostas poderá minimizar essa perda. O valor gasto com esse desperdício poderia ser revertido em melhorias nos processos produtivos.

OBJECTIVE: The purpose of this study was to quantify and assess the cost of food wastage in eight cafeterias of a big steel mill. METHODS: Eight cafeterias were followed during five months. Quantification of food wastage was done considering the leftovers and the number of meals planned and served daily. For determining the cost, preparations were divided into groups, and the cost was obtained from the average price of foodstuffs purchased during the month. RESULTS: Fifty percent of the cafeterias did not achieve wastage less or equal to 30g (the per capita food wastage goal set by the company). The total per capita food wastage ranged from 24g to 60g, equivalent to 176-1213kg of food wasted monthly. Salads were wasted more often in most foodservices. The monthly cost of food wastage reached 2.2 percent to 3.0 percent of the amount spent monthly on food. It represented a high expense for the foodservice (approximately 80-108 minimum wages). The results allowed the proposal of intervention measures such as planning and development of appropriate preparations, identification of customers, and nutrition education actions. CONCLUSION: The cafeterias presented considerable food wastage, hence money loss. Implementation of interventions can minimize these losses. Savings from reducing wasteful spending could be used for improving production processes.