Comprehensive analysis of Amazonian oil and fats with different fatty composition: Murumuru fat (Astrocaryum murumuru), cupuassu fat (Theobroma grandiflorum), and pracaxi oil (Pentaclethera macroloba).

Amazon is the largest Brazilian biome and has a vast diversity of oilseed species. This work highlighted three of its natural riches, the murumuru (Astrocaryum murumuru) fat, cupuassu (Theobroma grandiflorum) fat, and pracaxi (Pentaclethera macroloba) oil obtained from the seeds of the fruits of these species. It was aimed at a comprehensive evaluation of the chemical and physicochemical properties of these Amazonian products, deepening the knowledge on their quality parameters for products and processes design.

Extraction optimization, biological activities, and application in O/W emulsion of deep eutectic solvents-based phenolic extracts from olive pomace.

This study evaluated the phenolic compound extraction from olive pomace with deep eutectic solvents (DES) prepared with choline chloride ([Ch]Cl) and four (poly-)carboxylic acids. Temperature, water addition in the solvent, and solid-liquid ratio were evaluate in total phenolic content and antioxidant activity of extracts obtained with DES and ethanol, as control. Moreover, the antimicrobial activities of solvents and extracts were evaluated.

Caferana seeds () as a new source of nutrients: Evaluation of the proximal composition, solvent extraction, bioactive compounds, and δ-lactam isolation.

The proximal composition, amino acid, carbohydrate, and volatile profiles of caferana () seeds flour were here assessed. Seeds were also subjected to the following extraction processes: one with pressurized ethanol (PLE) and two with ethanol + supercritical CO mixture at different temperatures and pressures (SC1 and SC2). Extracts were characterized in terms of caffeine, total phenolic, and δ-lactam.

Choline chloride-based deep eutectic solvents as potential solvent for extraction of phenolic compounds from olive leaves: Extraction optimization and solvent characterization.

This study evaluates the use of deep eutectic solvents (DES) prepared with choline chloride ([Ch]Cl) and carboxylic acids for phenolic compound extraction from olive leaves. These extracts were then compared to those obtained using ethanol. The effects of temperature and water addition during DES- and ethanol-based extractions were analyzed using response surface methodology.

Physical properties of Amazonian fats and oils and their blends.

Considering their diversity, this work evaluated physical properties of Amazonian fats/oils (murumuru, tucuma kernel, bacuri, pracaxi, patawa, and Brazil nut). Solid fat content (SFC) curves and crystallization/melting profiles were determined. We also explored the possibilities of combining these lipids into blends to improve their nutritional and technological aspects.

Phase behavior of cholesterol in mixtures with hypo- and hypercholesterolemic lipids.

Some lipidic bioactives are largely reported to present hypocholesterolemic effects, for example, oleic acid, α-tocopherol, and octacosanol, found in rice-bran, olive, and sunflower oils. In contrast, some saturated and trans-unsaturated lipids found in animal fats or partially hydrogenated oils have been associated with the opposite effect. However, the mechanisms in which these lipids act for lowering or increasing cholesterol are not fully understood.