No abstract

Total antioxidant capacity (TAC) may be a comprehensive oil quality index because of its potential association with chemical composition, oxidative stability, and fresh oil quality. We aimed to investigate the chemical determinants of the oxidative stability and TAC of oils using multivariate statistical analyses and the use of the TAC assay as a predictor of oil stability. Fatty acids, tocols, phenolic compounds, peroxide value, acid value, induction period (by the Rancimat test) and TAC (by the TEAC assay) were determined in refined canola, corn, soybean, and sunflower oils as well as cold-pressed nut oils. Principal component analysis was used for data reduction and variable extraction. Generalized linear models successfully estimated the TAC (R 2 ¼ 90.3%, p < 0.005) and oxidative stability (R 2 ¼ 91.6%, p < 0.001) of the oils, and g-tocopherol was the most important predictor in both of the models. The peroxide value and induction period were linearly associated with antioxidant capacity (R 2 ¼ 0.65, p < 0.01 and R 2 ¼ 0.70, p < 0.01, respectively), allowing the prediction of the initial quality and oxidative stability of the oils by the TEAC assay. Additionally, the proposed minimum TAC value for good quality refined oils was 2.2 mmol TE/kg.Practical Applications: Lipid oxidation is one of the major causes of vegetable oil degradation, affecting its global quality and limiting its shelf life. Therefore, a quality index applicable for estimating oxidative stability and initial quality of refined and cold-pressed vegetable oils might be an important tool for quality control of oils in the food industry. We show that the TEAC assay, a simple and rapid spectrophotometric assay of antioxidant capacity, may be a useful tool for the determination of the global quality of oils due to its significant associations with the induction period and peroxide value. A minimum TAC value is advisable for good quality refined plant oils, especially when the initial quality and the shelf life are of concern.

carbonyl compounds, and were highly stable after deepfrying. In addition, oleic acid, tocopherols, and flavor compounds were transferred from EVOO into the French fries.In conclusion, EVOOs were more stable than refined seed oils during short-term deep-frying of French fries and also contributed to enhance the nutritional value, and possibly improve the flavor, of the fries prepared in EVOO.

Green banana flour shows good potential as a functional ingredient for special-purpose foods, but there are no data in the literature concerning the use of a green banana pulp and peel flour for the development of products such as pasta. The aim of the present study was to develop tagliatelle pasta substituting the wheat flour with different concentrations of a green banana mixed pulp and peel flour. The pasta formulations were prepared replacing the wheat flour by the green banana mixed pulp and peel flour in two concentrations: 15% and 30%. A control formulation with wheat flour was also prepared. The green banana mixed pulp and peel flour presented higher ash, total fibre and total phenolic compound contents than traditional wheat flour. The pasta formulation with the addition of 15% green banana flour showed the highest ash content and the best sensory acceptability of all the formulations. It was concluded that it was possible to develop a tagliatelle pasta with satisfactory acceptance replacing the wheat flour by a green banana mixed pulp and peel flour. Keywords: Functional foods; Sensory acceptance; Bioactive compounds. ResumoA farinha de banana verde possui grande potencial como ingrediente funcional em alimentos para fins especiais. No entanto, não há dados na literatura sobre a utilização da mistura de farinha da casca e da polpa da banana verde para o desenvolvimento de produtos, como massas. O objetivo deste trabalho foi desenvolver uma massa alimentícia tipo talharim, substituindo a farinha de trigo por uma mistura de farinha de polpa e de casca de banana verde, em diferentes concentrações. As formulações foram preparadas substituindo a farinha de trigo pela mistura de farinha de polpa e de casca de banana verde em duas concentrações: 15% e 30%. Uma formulação controle com farinha de trigo foi elaborada. As farinhas de polpa e de casca de banana verde apresentaram maiores teores de cinzas, fibras totais e compostos fenólicos totais. A formulação adicionada de 15% da farinha de banana verde apresentou o maior teor de cinzas e a melhor aceitabilidade entre as formulações. Desta forma, foi possível desenvolver uma massa alimentícia tipo talharim com aceitação sensorial satisfatória. Food Technol., v. 20, e2016119, 2017. Received: Sept. 02, 2016 Accepted: June 27, 2017 http://bjft.ital. The use of green banana (Musa balbisiana) pulp and peel flour as an ingredient for tagliatelle pasta Castelo-Branco, V. N. et al. Palavras-chave: