The antioxidant effect of purified phytic acid (PPA) from rice bran (rice polishing by-product) combined with sodium erythorbate (SE) was evaluated for the first time in mortadella (added with 60% mechanically separated meat), a cured product with high-fat content and highly prone to oxidation, characteristic in Brazil. PPA proved effective compared to standard analytical grade phytic acid (SPA). Two central composite rotational designs (CCRD) (A and B) were employed to investigate the influence of PPA and SE, and SPA and SE, respectively, on mortadella lipid oxidation evaluated by TBARS after 30 days at 30 °C.
View Article and Find Full Text PDFConsumers are increasingly looking for healthy foods without the addition of synthetic additives. The aim of this study was to evaluate the efficiency of coffee extracts as a natural antioxidant in fresh pork sausage. Firstly, the conditions for obtaining coffee green extracts were optimized (Central Composite Rotatable Design 2, variables: extraction time, ethanol-water ratio, and sample-solvent ratio) in an ultrasound bath (70 °C).
View Article and Find Full Text PDFIn recent years, the interest in products of natural origin has boosted the exploitation and use of plants as food and sources of bioactive compounds, especially wild plants widely used in different cultures for several purposes. is a wild edible plant (WEP) traditionally used as food and medicine, about which few studies exist. Thus, this study aimed at enhancing the knowledge about its nutritional, chemical and bioactive profile, considering different plant parts and development stages, in order to increase its inclusion in the diet of South American communities.
View Article and Find Full Text PDFThis study evaluated the inhibitory effect of phytic acid (PA) on the spore germination and vegetative cells growth of type A, as well as its effect in combination with maltodextrin (MD) in cooked sausages. The addition of 1% PA showed a satisfactory inhibition of spores' germination and vegetative cells growth of in BHI media. The inhibitory effect of 1% PA on vegetative cells was similar to the additive sodium sorbate (SS) at 10%.
View Article and Find Full Text PDFThe pink/reddish color meat products characteristic of cured meat without the curing salts is a meat industry demand to serve consumers who are looking for healthy foods with the usual sensory characteristics. This study aimed to obtain and characterize a hybrid dye and use it as a replacer for curing salt in the production of pink/red color in mortadella stored for 40 days. A layered zinc hydroxide salt (ZHN) was obtained by alkaline precipitation to immobilize and increase cochineal carmine stability, obtaining the hybrid dye (ZHN-carmine) by ion exchange in aqueous solution.
View Article and Find Full Text PDFThis study evaluated the application of ultrasound alone or combined with chlorine dioxide (ClO) for Salmonella Typhimurium and Escherichia coli inactivation in poultry processing chiller tank water. A Full Factorial Design (FFD) 2 was conducted for each microorganism to evaluate the effect of ultrasound exposure time (x: 1 to 9 min; fixed: 37 kHz; 330 W; 25 °C) using a bath, and ClO concentration (x: 1 to 17 mg L) on microorganism count expressed in log CFU mL in distilled water. Variable x had a negative effect on Salmonella Typhimurium (-5.
View Article and Find Full Text PDFVegetable-based proteins may be extracted from different sources using different extraction methods, among them, ultrasound-assisted extraction stands out. This review presents the current knowledge on ultrasound-assisted extraction (UAE) and the functional properties of extracted vegetable proteins. Ultrasound generates cavitation in a liquid medium, defined as gas and vapor microbubbles collapse under pressure changes large enough to separate them in the medium.
View Article and Find Full Text PDFTalanta
February 2020
A new and simple method for Ni determination in hydrogenated vegetable fat (HVF) has been developed using a RP-DLLME sample preparation procedure for further determination by flame atomic absorption spectrometry (FAAS) and graphite furnace atomic absorption spectrophotometry (GFAAS). The RP-DLLME procedure includes simultaneous microextraction and preconcentration of Ni in HVF, using 5.0 g of HVF preheated (75 °C) and diluted in 5.
View Article and Find Full Text PDFSteam treatment has been reported as an alternative to improve the cup quality of coffee; in this research, it was applied to C. canephora defective coffee. The aim of the study was to evaluate the sensory perception of steamed defective C.
View Article and Find Full Text PDFBetween 15 and 20% of Brazilian coffee production corresponds to defective beans (PVA), which decreases the quality of the coffee brew. Steam treatment has been reported as an alternative to improve the volatile profile and cup quality of coffee. The aim of this study was to propose a steam treatment of defective Coffea canephora beans to improve the volatile profile of the roasted coffee.
View Article and Find Full Text PDFThe lactic acid bacteria are involved with food fermentation and in such cases with food spoilage. Considering the need to reduce the lactic acid bacteria growth in meat products, the aim of this work was to enumerated and investigated the lactic acid bacteria present on sliced vacuum-packed cooked ham stored at 4 °C and 8 °C for 45 days by phenotypic and molecular techniques. The quantification showed that the lactic acid bacteria were present from the first day with mean count of 1.
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