Evaluation of the Nutraceutical, Physiochemical and Sensory Properties of Raisin Jam

Functional wafer cream fortified with carob molasses pulp flour

Wafer cream is an important product used in many foods, especially confectionery products, and consumed with delight. Therefore, nutritional enrichment of this product is of great importance. In this study, a new functional product was developed by adding carob molasses pulp (CMP) flour obtained from carob fruit, which has unique nutritional and bioactive properties, to wafer cream, increasing its nutritional value and antioxidant activity. When 15% CMP flour was added to the wafer cream formulation, there was an increase of approximately 58.43 and 78.77%, respectively, in total polyphenol and antioxidant levels compared to the control group (without CMP flour). In addition, since the product developed is in cocoa colour, consumer preference has increased. It has been determined that phytochemical and nutritive components of the wafer cream increased as a result of the use of carob flour.

Elaboração e caracterização de geleia prebiótica mista de jabuticaba e acerola

Resumo Objetivou-se, com este trabalho, a elaboração e a caracterização físico-química de geleias tradicionais prebióticas mistas de jabuticaba e acerola. As formulações compostas de polpas e blends foram: F1 (75% acerola/25% jabuticaba), F2 (50% acerola/50% jabuticaba), F3 (25% acerola/75% jabuticaba), F4 (100% jabuticaba) e F5 (100% acerola) com 1,0% de pectina, 0,1% de benzoato de potássio, 3% de inulina e 40% de sacarose. Os ingredientes foram misturados e as misturas foram concentradas até atingir sólidos solúveis totais (SST) entre 65 e 68 °Brix. As geleias a partir de polpas e blends de acerola e jabuticaba indicaram teores de acidez com variação de 0,77% a 0,80%. As geleias F1 e F5, as quais possuem a maior concentração de polpa de acerola na formulação, apresentaram SST de 65 °Brix. Verificou-se que na proporção em que se aumentou a porcentagem de polpa de jabuticaba nas geleias, diminuiu-se o teor de polifenóis totais de 405,43 para 135,75 GAEg/100 g. Observou-se que à medida que se aumentou a proporção de polpa de acerola nos blends, aumentou-se também os valores de vitamina C, com destaque na polpa de acerola pura com 3704,50 mg/100 g. Quanto aos carotenoides totais, verificou-se variação de 1,63 a 4,62 mg/100 g. A geleia F4, obtida a partir de polpa e casca de jabuticaba, apresentou os maiores valores para os parâmetros de textura, exceto para coesividade. Observou-se que os teores de compostos antioxidantes preconizam um perfil nutricional às geleias. Quanto ao perfil funcional, o produto atende à legislação brasileira em vigor por conter inulina, além da presença de antioxidantes.

Improving the sensory quality of flavored liquid milk by engaging sensory analysis and consumer preference

Developing innovative products that satisfy various groups of consumers helps a company maintain a leading market share. The hedonic scale and just-about-right (JAR) scale are 2 popular methods for hedonic assessment and product diagnostics. In this paper, we chose to study flavored liquid milk because it is one of the most necessary nutrient sources in China. The hedonic scale and JAR scale methods were combined to provide directional information for flavored liquid milk optimization. Two methods of analysis (penalty analysis and partial least squares regression on dummy variables) were used and the results were compared. This paper had 2 aims: (1) to investigate consumer preferences of basic flavor attributes of milk from various cities in China; and (2) to determine the improvement direction for specific products and the ideal overall liking for consumers in various cities. The results showed that consumers in China have local-specific requirements for characteristics of flavored liquid milk. Furthermore, we provide a consumer-oriented product design method to improve sensory quality according to the preference of particular consumers.

Impact of Sodium Chloride, Sucrose and Milk on Heat Stability of the Murine Norovirus and the MS2 Phage

Until now, little is known about the influence of food additives on heat inactivation of noroviruses. Only a few studies have shown a protective or inhibiting effect on virus infectivity caused by the food matrix. Therefore, the aim of this study was to examine the influence of sodium chloride, sucrose and milk on heat stability of the surrogates murine norovirus (MNV) and MS2 phage at 60 °C for 1-5 min in PBS for MNV and for 5-120 min in suspension medium buffer for MS2 phage. Different concentrations of sodium chloride (5, 10 %) and sucrose (5, 50 %) were added to the respective buffers. In addition, commercially available milk with different fat concentrations (0.3, 1.5, 3.5 %) was investigated in this study. In general, a linear titre reduction for MNV and MS2 phage could be observed, except for the heat treatment of MNV in PBS with 50 % sucrose. A protective effect of PBS with 50 % sucrose and of the matrix milk on MNV could be concluded. All other tested conditions did not show any influence on virus inactivation. However, MS2 phage did show a higher heat resistance throughout the experiments compared to MNV. In future investigations, it should be tested, whether the achieved data may be considered in risk assessments of heat-treated food products with high concentrations of sugar. Furthermore, it should be clarified, whether these results can also be referred to complex food matrices.