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The aim of the present study was to evaluate the impact of pulsed electric field (PEF) on the structural, morphological, functional, textural and rheological properties of red rice starch (Oryza sativa). The 5 mm thick starch pastes were subjected to PEF at 10 and 30 kV cm−1 with a pulse frequency of 600 Hz for 90 s. PEF was responsible for decreasing crystallinity, due to the damage caused during processing. The spectra showed different intensities in the bands close to 1000 cm−1, a characteristic region of starch. PEF30 showed greater stability and less retrogradation. The values for textural and rheological parameters were decreased, showing the effect of treatments on amylopectin chains. Therefore, based on the results, nonthermal modification of red rice starch by PEF at 30 kV cm−1 is the most suitable formulation to obtain a new material with optimized characteristics. Practical Applications The results of this study are beneficial for the industry, where its use to process rice starch‐based foods is targeted. Due to the practicality and efficiency when it comes to a nonthermal process, the modification of the structures and the improvement of the nature of food materials is the main objective. The advantage of PEF is that it can be applied to solid foods (in the form of a paste) and to liquids (food fluids), varying system parameters such as electrical intensity. When working with starch in paste form, the article shows that the highest intensity (30 kV cm−1) was the most indicated.

Resumo: Achocolatado em pó é um alimento rico em sacarose e outros ingredientes como, por exemplo, o cacau em pó. Ele é comercializado em embalagens rotuladas que apresentam as informações nutricionais do produto, bem como outros itens obrigatórios, sob regras de legislações nacionais específicas. Os rótulos permitem o acesso dos consumidores às informações sobre a composição nutritiva do alimento, possibilitando escolhas mais saudáveis para o consumo. Desta forma, este trabalho objetiva avaliar rótulos de achocolatados em pó comercializados na cidade de Pau dos Ferros, Rio Grande do Norte, verificando suas conformidades frente às legislações em vigência. Foram analisadas 10 marcas de diferentes tipos de achocolatados em pó, comercializadas em diferentes pontos da referida cidade. Verificou-se as informações nutricionais e outras informações obrigatórias utilizando a lista de verificação, segundo dados obrigatórios estabelecidos pela legislação vigente. Observou-se que apenas 60% das amostras de achocolatados em pó estavam de acordo com as legislações brasileiras para as informações nutricionais e 100% para as informações obrigatórias. Conclui-se que a maioria das marcas atendem as legislações, no entanto, são necessárias intervenções nas empresas para reparação das não conformidades através dos órgãos fiscalizadores como a Agência Nacional de Vigilância Sanitária e o Ministério da Agricultura, Abastecimento e Pecuária. Palavras-chave: Rótulo; chocolate em pó; legislações.Abstract: Powdered chocolate is a sucrose-rich food and other ingredients such as cocoa powder. He is marketed in labeled packagings which present the nutritional information of the product as well as other obligatory items under the rules of specific national legislation. The labels allow consumers access to information on the nutritional composition of the food, enabling healthier choices for consumption. In this way, this work aims to evaluate the labels of chocolate powders commercialized in the city of Pau dos Ferros, Rio Grande do Norteand verify their conformity with the legislation in force. Ten brands of different types of powdered chocolate commercialized in different parts of the city were analyzed. Nutrition information and other mandatory information were verified using the checklist, according to mandatory data established by current legislation. It was observed that only 60% of the samples of chocolate powders were in accordance with the Brazilian legislation for nutritional information and 100% for the obligatory information. It is concluded that most brands comply with laws, however, interventions in companies are necessary to repair nonconformities through regulatory agencies such as the National Agency for Sanitary Surveillance and the Ministry of Agriculture, Supply and Livestock.

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