A5045240568- Botanical Research and Applications
- Polysaccharides Composition and Applications
- Proteins in Food Systems
- Microencapsulation and Drying Processes
- Nanocomposite Films for Food Packaging
- Polysaccharides and Plant Cell Walls
- Food Chemistry and Fat Analysis
- Food composition and properties
- Bee Products Chemical Analysis
- Food Drying and Modeling
- Phytochemicals and Antioxidant Activities
- Algal biology and biofuel production
- Food Quality and Safety Studies
- Pickering emulsions and particle stabilization
- Essential Oils and Antimicrobial Activity
- Meat and Animal Product Quality
- Fermentation and Sensory Analysis
- Microbial Metabolites in Food Biotechnology
- Agricultural and Food Sciences
- biodegradable polymer synthesis and properties
- Insect and Pesticide Research
- Freezing and Crystallization Processes
- Natural Fiber Reinforced Composites
Universidade Federal de Lavras
2016-2023
For the preparation of nanoemulsions, correct choice emulsifiers, together with emulsification methods, directly influences final product quality. The present study reports ultrasound-assisted oil-in-water nanoemulsions produced mucilage extracted from leaves Pereskia aculeata Miller (ora-pro-nobis; OPN). OPN (%) and soybean oil concentration range, process operating parameters, ultrasonic power amplitude sonication time (min), were optimized based on mean droplet diameter (d32). effect...
Hydrocolloid powders from Pereskia aculeata Miller were obtained by using drying in a vacuum oven and freeze-drying at different concentrations (0.5–3.0 g of hydrocolloids/100 aqueous phase) to produce oil-in-water emulsions. The rheological characteristics the emulsions their microstructures determined. freeze-dried hydrocolloids higher hydrocolloid resulted with viscosities. method concentration influenced thixotropic behavior, resulting exhibited shear-thinning behavior. Microstructural...
Mucilage extracts from the leaves (ML) and fruits (MFR) of ora-pro-nobis were used as stabilizing agent with a mixture carrageenans (MIX) at different concentrations for Petit Suisse cheese production. The texture, syneresis, viscosity profiles analyzed in fresh samples rehydrated after freeze-drying. textural properties increased mucilage (ML), increased. After rehydration, values analysis decreased compared to samples. Fresh exhibited pseudoplastic behavior. Greater concentration ML, MFR...
The influence of infrared radiation-assisted freeze-drying (IRFD) on the process efficiency and quality blackberries (Rubus spp. variety Tupy) was evaluated. Two lamp types were coupled in freeze dryer to produce short-wavelength (NIRFD) mid-wavelength (MIRFD). Treatments were: conventional (FD - control); continuous NIRFD, MIRFD; NIRFD MIRFD applied after 40% weight reduction. IRFD reduced up 42.51% drying time compared FD, fastest treatments due greater penetration depth. ANOVA results...
The rheological behavior, thermogravimetric analysis (TGA), and atomic force microscopy (AFM) of the Pereskia aculeata Miller (OPN) mucilage treated with sodium chloride (NaCl), calcium (CaCl2), sucrose were evaluated. experimental design was divided in a fractional factorial 25-1 for screening factors (OPN, sucrose, NaCl, CaCl2, pH) then 5 × 3 full NaCl). model solutions used presented shear-thinning behavior OPN concentrations that had significant effect on apparent viscosity. Sucrose...
Mucilage is derived from Pereskia aculeata Miller via precursors obtained by an extraction process. However, this process produces dark liquor whose coloring not desirable in the final food additives. Therefore, a fixed-bed filtration system with activated carbon was used for pigment elimination and clarification of product. Color parameters protein contents were evaluated comparing extract filtrate. At same time, experimental study conducted that monitored changes pH adsorption kinetics...
Abstract The rheological and thermal properties of honeys have a practical importance for beekeepers industries, as their determination allows proper processing quality control. However, few studies been carried out in this area with Brazilian honeys. Therefore, physicochemical, 40 different floral origins were determined study. All the physicochemical indicated that analyzed honey samples met criteria established by Codex Alimentarius . showed non‐Newtonian behavior from 10C to 15C...
Abstract Ora‐pro‐nobis mucilage (MOPN) was incorporated into starch films to improve their mechanical, chemical, and retrogradation properties. Films were made in four MOPN content (0%, 10%, 20%, 30%) by casting. with added presented antioxidant capacity varying from 3.9% 23.3%. Chemical cross‐links between observed Fourier transform infrared spectroscopy (FTIR) spectrum, resulting a reinforced network the greater young modulus (0.02 Pa, control‐film, 2.20 30%‐MOPN), higher tensile strength...
Hydrocolloids of Pereskia aculeata Miller (OPNH) are potential ingredients in food industry as emulsifiers and stabilizers. The extraction process OPNH requires the removal pigments with activated carbon. Because this step is critical to quality ingredient has an impact on costs, a new carbon been developed residues from same process. Residues NaOH H3PO4 (300 °C, 1 h) were subjected batch adsorption tests model solutions malachite green (MG), carbohydrate protein. Residue treated 85% (OPNAC)...
In order to incorporate bioactive compounds in foods and beverages from substances with coloring antioxidant properties such as betalains, pigments of natural origin beet disposal, it is necessary analyze the main operational variables that influence its stability. Thus, importance encapsulation technologies by spray chilling emulsion homogenization ultrasonic devices highlighted. Therefore, three independent were studied: lipid binary treatments (carrier agents), containing stearic acid...
This study investigated the effect of PGPR emulsifier and ultrasonic treatment on properties stability water-in-oil (W/O) emulsion grape peel extract. Different concentrations (0%, 3%, 4%, 5%), sonication times (4 min 6 min), power (160 W 200 W, corresponding to 40% 50% amplitude in relation nominal probe) were used. proved be effective kinetic emulsions, for an optimal concentration 4%. The findings showed that ultrasound treatments improved emulsifying at different levels. W/O-200W-4min...