Anny Manrich

PressPublish · Food Science

Colorimetric films incorporated with anthocyanins as an indicator for freshness monitoring have aroused growing interest recently. The pH-sensing colorimetric film were developed based on pectin (HM), containing aqueous hibiscus extract microparticles (HAE). HAE microparticles were obtained by spray drying with different wall materials (Inulin -IN,...

Due to their remarkable characteristics, cellulose nanocrystals are strategic materials that has various industrial applications, and are capable of being produced from vegetable fibers derived from the discards of agricultural practices. Peanut(Arachis hypogaea L.) peel is a residue considered of low commercial value and high polluting potential t...

In this study we attempt to obtain ecological composites, produced from high density polyethylene (HDPE) and spent coffee grounds (SCG), 10–30% w/w, through extrusion and injection molding. The influence of the SCG concentration on the mechanical properties, microstructure, thermal and physical stability of the composites was determined. The incorp...

We report on production of novel quaternary nanocomposite films based on thermoplastic starch (TPS, 8% w/v) derived from cassava, cocoa butter, (CB, 30% wt.%), and lemongrass essential oil (LEO, 1:1) nanoemulsions reinforced with different concentrations of brewery spent grain (BSG, 5 or 10 wt.%) fibers, by continuous casting. The chemical composit...

The properties of the mixtures of fatty acids obtained by adding different concentrations of cocoa butter (CB) to a pectin matrix (PEC) were studied. The influence of the CB concentration on the optical properties, mechanical properties, barrier properties, surface properties, microstructure and thermal stability of pectin polysaccharide films were...

The properties of the mixtures of fatty acids obtained by adding different concentrations of cocoa butter (CB) to a pectin matrix (PEC) were studied. The influence of the CB concentration on the optical properties, mechanical properties, barrier properties, surface properties, microstructure and thermal stability of pectin polysaccharide films were...

The objective of this study was to prepare pectin films (PEC) activated by copaiba oil (CP) nanoemulsions (NE). CP-NE were added to film-forming formulations based on pectin and then dried into films by continuous casting. Chemical, morphological, thermal, mechanical and antimicrobial properties were studied in addition to biode-gradability by the...

This work aims to develop composite films from renewable sources and to use a residue from the brewing industry, malt bagasse, as a reinforcing agent. The composites were prepared with 0–15 wt%/wt% of malt bagasse, using the continuous casting process. All films were characterized in terms of their microstructure, physicochemical, mechanical, and p...

Edible films supplemented with active ingredients are promising for food packaging and preservation. Numerous plant essential oils present antimicrobial activity against pathogenic microorganisms, but their low solubility in water limits food-related applications. Emulsification is herein exploited as a means of improving the dispersion of such act...

The ever-growing environmental concerns over the unrestricted fossil sources exploitation for non-biodegradable materials production has stimulated research on alternative renewable resources. The pectin films (HDM) were incorporated in different concentrations of spent coffee grounds (SCG) (5–20% w/w HDM) aiming at developing biodegradable films a...

Cutin is the biopolyester that protects the extracellular layer of terrestrial plants against dehydration and environmental stresses. In this work, cutin was extracted from tomato processing waste and cast into edible films having pectin as binding agent. The influences of cutin/pectin ratio (50/50 and 25/75), film-forming suspension pH, and castin...

The economics for production of secondgeneration (2G) ethanol from sugarcane bagasse in large scale, competing with the cogeneration of electric energy, is still not consolidated. In this scenario, the key for feasibility may be the biorefinery concept, a multiproduct industry using biomass fractions to produce energy, chemicals and by-products. Xy...

RESUMO-Atualmente, a casca de soja, um importante resíduo agrícola, tem sido investigada devido ao seu grande potencial para utilização em diferentes áreas. Neste trabalho, foram realizados ensaios de termogravimetria, espectroscopia na região do infravermelho e difratometria de raios X para a caracterização térmica e estrutural deste resíduo visan...

Xylanases have important applications in industry. Immobilization and stabilization of enzymes may allow their reuse in many cycles of the reaction, decreasing the process costs. This work proposes the use of a rational approach to obtain immobilized commercial xylanase biocatalysts with optimized features. Xylanase NS50014 from Novozymes was chara...

Trypsin was immobilized on chitosan gels coagulated with 0.1 or 1 M NaOH and activated with glutaraldehyde or glycidol. The derivatives were characterized by their recovered activity, thermal (40, 55 and 70 degrees C) and alkaline (pH 11) stabilities, amount of enzyme immobilized on gels for several enzyme loads (8-14 mg(protein)/g(Gel)) and compar...