Buttermilk as Encapsulating Agent : Effect of Ultra-High-Pressure Homogenization on Chia Oil-in-Water Liquid Emulsion Formulations for Spray Drying

Functional foods are highly demanded by consumers. Omega-3 rich oil and commercial buttermilk (BM), as functional components, used in combination to produce emulsions for further drying may facilitate the incorporation to foods. Ultra-high-pressure homogenization (UHPH) has a great potential for technological and nutritional aspects in emulsions production. The present study aimed to examine the potential improvement of UHPH technology in producing buttermilk-stabilized omega-3 rich emulsions (BME) for further drying, compared with conventional homogenization. Oil-in-water emulsions formulated with 10% chia: sunflower oil (50:50); 30% maltodextrin and 4 to 7% buttermilk were obtained by using conventional homogenization at 30 MPa and UHPH at 100 and 200 MPa. Particle size analysis, rheological evaluation, colloidal stability, zeta-potential measurement, and microstructure observations were performed in the BME. Subsequent spray drying of emulsions were made. As preliminary approximation for evaluating differences in the homogenization technology applied, encapsulation efficiency and morphological characteristics of on spray-dried emulsions (SDE) containing 21.3 to 22.7% oil content (dry basis) were selected. This study addresses the improvement in stability of BME treated by UHPH when compared to conventional homogenization and the beneficial consequences in encapsulation efficiency and morphology of SDE

Application of ultra-high pressure homogenization (UHPH) at different stages of wine production

Ultra-High Pressure Homogenization (UHPH) is an emerging, efficient and fast technology that can be applied at different stages in winemaking in order to reduce or avoid the use of sulphites or other antimicrobial and antioxidant treatments. During 2022 vintage, four batches of must of three different white cultivars (Vitis vinifera L.) were processed by UHPH at 300 MPa with an inlet temperature (Ti) of 4 ºC and their effectiveness was compared with control batches (without SO2 addition) and musts that were sulphited with 60 mg/L of total SO2. A complete inactivation of yeasts and bacteria was achieved when grape juices were processed by UHPH, reaching up to 7 log of reduction in yeasts, 4.6 log for acetic acid bacteria and 4.3 log for lactic acid bacteria. All UHPH musts remained stable from a microbiological point of view for more than 8 months stored at 4 ºC in aseptic containers. Results showed that when antioxidant activity, colour intensity and total phenol index were measured, UHPH can be considered a protective technique, with a similar action to that of adding SO2. Furthermore, PPO enzymatic activity was completely inactivated in UHPH and sulphited musts. When a red wine contaminated by Brettanomyces was treated by UHPH at 300 MPa and Ti = 17 ºC, a 6.6 log reduction was obtained for this spoilage microorganism and no increase of volatile phenols were detected after 2 months

White wine processing by UHPH without SO2. Elimination of microbial populations and effect in oxidative enzymes, colloidal stability and sensory quality

The use of UHPH sterilization in the absence of SO2 has been used to eliminate wild microorganisms and inactivate oxidative enzymes. A white must of the Muscat of Alexandria grape variety was continuously processed by UHPH at 300 MPa (inlet temperature: 23–25 °C). The initial microbial load of the settled must was 4-log CFU/mL for both yeast and moulds, and slightly lower for bacteria. After UHPH processing, no microorganisms were detected in 1 mL. UHPH musts remain without fermentative activity for more than 60 days.Postprint (published version

Application of ultra-high pressure homogenization (UHPH) at different stages of wine production

Ultra-High Pressure Homogenization (UHPH) is an emerging, efficient and fast technology that can be applied at different stages in winemaking in order to reduce or avoid the use of sulphites or other antimicrobial and antioxidant treatments. During 2022 vintage, four batches of must of three different white cultivars (Vitis vinifera L.) were processed by UHPH at 300 MPa with an inlet temperature (Ti) of 4 ºC and their effectiveness was compared with control batches (without SO2 addition) and musts that were sulphited with 60 mg/L of total SO2. A complete inactivation of yeasts and bacteria was achieved when grape juices were processed by UHPH, reaching up to 7 log of reduction in yeasts, 4.6 log for acetic acid bacteria and 4.3 log for lactic acid bacteria. All UHPH musts remained stable from a microbiological point of view for more than 8 months stored at 4 ºC in aseptic containers. Results showed that when antioxidant activity, colour intensity and total phenol index were measured, UHPH can be considered a protective technique, with a similar action to that of adding SO2. Furthermore, PPO enzymatic activity was completely inactivated in UHPH and sulphited musts. When a red wine contaminated by Brettanomyces was treated by UHPH at 300 MPa and Ti = 17 ºC, a 6.6 log reduction was obtained for this spoilage microorganism and no increase of volatile phenols were detected after 2 months.This research has been funded by the project FRUHPH “Application of Ultra High Pressure Homogenization in fruit juices and wines to improve quality and preservation without additives”. Grup Operatiu from Generalitat de Catalunya (PDR 2014-2022). The authors would like to thank the wineries from DOP Penedès and DOP Tarragona (Catalonia, Spain) that provided the musts and red wine for this study. And E. Valdés and D. Moreno from CICYTEX-INTAEX for their advices on the interpretation of some of the results.info:eu-repo/semantics/publishedVersio

Producto líquido de origen vegetal como sustitutivo de la leche

Producto líquido de origen vegetal como sustitutivo de la leche. Se refiere a un producto líquido de origen vegetal que puede ser usado como alternativa a la leche líquida de origen animal. Se caracteriza porque contiene esencialmente un extracto de chufa, un extracto de quinoa y una mezcla de enzimas del tipo a-amilasa. Dicha mezcla comprende a-amilasas de diferentes temperaturas óptimas de hidrólisis del almidón con la finalidad de evitar la gelificación del almidón en los tratamientos térmicos de conservación, proporcionando al mismo tiempo maltodextrinas y glucosa

Sistema continuo y procedimiento de esterilizacion y estabilizacion fisica de fluidos bombeables mediante ultra alta presion de homogeneizacion

Sistema continuo y procedimiento de esterilización y estabilización física de fluidos bombeables, alimenticios o de otras naturalezas, mediante ultra alta presión de homogeneización (UHPH) que comprende un primer intercambiador de calor 1 que precalienta el fluido a una temperatura Tp entre 40 y 90 °C; un ultrahomogeneizador 3 a través del cual el fluido a la temperatura Tp es introducido a una presión Pu de entre 200 y 600 MPa, aumentando su temperatura hasta un valor final Tu; un segundo intercambiador de calor 4 en el que se ajusta la temperatura hasta un valor de temperatura de enfriamiento Te; un tanque aséptico 5 que recibe el fluido enfriado al valor Te, y desde el cual es bombeado mediante presión de aire estéril a una envasadora aséptica, para envasar el producto final.Continuous system and procedure of sterilization and physical stabilization of pumpable fluids, food, or other type of fluids, through ultra-high pressure homogenization (UHPH) comprising a first heat exchanger 1 which preheats the fluid at temperature Tp between 40 and 90 A º C; an ultra-homogenizer 3 through which fluid at temperature Tp is introduced at a pressure Pu between 200 and 600MPa increasing its temperature up to a final value Tu; a second heat exchanger 4 where its cooling temperature is adjusted at value Te; an aseptic tank 5 that receives the cooled down fluid at value Te, and from which it is pumped by sterile air pressure into an aseptic packaging machine, for the packaging of the final product

Guidelines on reporting treatment conditions for emerging technologies in food processing

In the last decades, different non-thermal and thermal technologies have been developed for food processing. However, in many cases, it is not clear which experimental parameters must be reported to guarantee the experiments’ reproducibility and provide the food industry a straightforward way to scale-up these technologies. Since reproducibility is one of the most important science features, the current work aims to improve the reproducibility of studies on emerging technologies for food processing by providing guidelines on reporting treatment conditions of thermal and non-thermal technologies. Infrared heating, microwave heating, ohmic heating and radiofrequency heating are addressed as advanced thermal technologies and isostatic high pressure, ultra-high-pressure homogenization sterilization, high-pressure homogenization, microfluidization, irradiation, plasma technologies, power ultrasound, pressure change technology, pulsed electric fields, pulsed light and supercritical CO2 are approached as non-thermal technologies. Finally, growing points and perspectives are highlighted

Procedimiento para la protección y estabilización del color de carnes y productos elaborados de carne, frescos, marinados o parcialmente deshidratados, tratados por alta presión

Procedimiento para la protección y estabilización del color de carnes y productos elaborados de carne, frescos, marinados o parcialmente deshidratados, tratados por alta presión. La pérdida de color original de la carne es un problema en la aplicación de altas presiones, debido a un aumento de la luminosidad y un descenso de la intensidad de la tonalidad roja, que pasa a rosada o marrón, reduciendo su aceptación. Este invento mantiene el color natural de carnes frescas, y sus productos elaborados, ahumados, adobados, marinados, salados, parcialmente deshidratados o reconstituidos previamente a la presurización. El tratamiento de presión debe evitar la descongelación del producto, o al menos, que la temperatura del producto sobrepase los 0º C en ningún momento. También se evitarían otros procesos físico-químicos tendentes a la recuperación del color original que pudieran producir cambios en la composición deseada del producto o el rechazo del consumidor