Abstract The effect of high‐pressure processing on mechanical and thermal properties four complex packaging materials (polyethylene/ethylene vinyl alcohol/ polyethylene: PE/EVOH/PE; metallized polyester/polyethylene: PETmet/PE; PET/PE; polypropylene SiOx recovered: PPSiOx) was studied. Pouches the different containing distilled water or olive oil as food simulants, well empty ones, were subjected to 400 MPa for 30 min, at temperatures 20 60°C. Delamination wrinkling a general consequence...

Antioxidant-rich foods and beverages play an essential role in the prevention of diseases. This study assessed influence addition ethanolic extract propolis (EEP) to beer at different concentrations (0.05, 0.15, 0.25 g/L). Total phenolic content (TPC) total flavonoid (TFC) were determined. Antioxidant activity (AA) was evaluated by radical scavenging (DPPH ABTS) reducing power (FRAP). The EEP resulted a linear increase TPC with values 4.5%, 16.7%, 26.7% above control (no added; 242 mg gallic...

Abstract The effect of high‐pressure processing (HPP) on the total migration into distilled water and olive oil barrier properties four complex packaging materials were evaluated. films polyethylene/ethylene‐vinyl‐alcohol/polyethylene (PE/EVOH/PE), metallized polyester/polyethylene, polyester/polyethylene (PET/PE), polypropylene‐SiOx (PPSiOx). Pouches made from these filled with food simulants, sealed then processed at a pressure 400 MPa for 30 min, 20 or 60°C. kept atmospheric used as...

ABSTRACT Active films (AFs) using poly(lactic acid) (PLA) as a polymeric matrix containing various propolis concentrations (5, 8.5, and 13%) the active agent (AA) were developed casting method. The purpose was to determine effects of incorporation AA on physical properties evaluate antioxidant antimicrobial activities. Tensile strength elastic modulus AFs decreased relative control (PLA without AA). Introducing substances from into PLA also affected its thermal (glass transition). Adding AAs...

In recent years, pomegranate (Punica granatum L.) fruit has gained popularity due to its functional properties.In this study, the effects of maturity on chemical composition (pH, acidity and total soluble solids), phenolic contents, anthocyanin contents antioxidant capacities juices from three varieties (Wonderful, Chaca Codpa) were assessed.The fruits collected manually at stages (M1: unripe, M2: medium ripe, M3: full ripe) Region de Coquimbo (Chile).Pomegranate juice was obtained squeezed...

The effect of high-pressure processing on 2 plastic food packaging films, a biopolymer (PLASiOx/PLA) and synthetic polymer (PET-AlOx), was studied. Samples in direct contact with olive oil, as fatty simulant, distilled water, an aqueous were subjected to pressure 500MPa for 15 min at 50 degrees C. mechanical, thermal, gas barrier properties both films evaluated after the (HPP) compared control samples that have not undergone this treatment. Significant changes all observed HPP treatment...

Botanical origin, physicochemical properties (ash, colour, diastase activity, electrical conductivity (EC), hydroxymethylfurfural (HMF), moisture, optical rotation (OP), pH, reducing sugars, total acidity, soluble solids, and water activity), bioactive compounds (BC), antioxidant activity obtained from strawberry tree honey South Portugal were investigated. Results showed that the pollen analysis parameters found within to meet international specifications. Significant differences (<mml:math...

Chagas disease, caused by the protozoan parasiteTrypanosoma cruzi, has no effective treatment available. On other hand, microalgae are aquatic organisms that constitute an interesting reservoir of biologically active metabolites. Moreover, some species green and red algae present anti-protozoan activity. Our aim was to study antiparasitic effects aqueous, methanolic ethanolic extracts from different microalgae. : results show S. obliquus T. suecica as well C. reinhardtii trypanocidal...

During ripening, ‘Hass’ avocado skin changes from green to purple/black. Low-temperature storage with a controlled atmosphere (CA) is the most widely used method for storage; however, few studies have simulated this technology and considered days of regular air (RA) prior CA storage. Herein, effect delaying (&gt;30% dry matter) in was examined. Long-term conditions (5 °C 50 days) corresponded (i) (RA), (ii) (4 kPa O2 6 CO2) (iii) 10 RA + 40 (iv) 20 30 CA. Evaluations were performed during at...

The chemical composition and quality of honey depend on the floral geographical origin, extraction techniques, storage, resulting in a unique product for each area. Currently, consumers are not only concerned about composition, quality, food safety honey, but also its origin. objective this study was to characterize honeys produced Chile's central-southern region from mineral botanical perspective, thus adding value through differentiation by Two hundred samples were used underwent analysis...

1-Methylcyclopropene (1-MCP) is used for extending the postharvest life of avocado during storage. Evaluated effect 1-MCP application at different times after harvest, i.e., 0, 7, 14, and 21 d 5 °C, to identify threshold ethylene inhibition response in "Hass" avocado. Our results showed that fruits from two maturity stages harvest: low dry matter (20-23%) high (27%). Changes production rates transcript accumulation genes involved metabolism were measured harvest treated fruit up 14 storage...