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1. Measurement and analyses of biodiversity conservation actions of corporations listed in the Brazilian stock exchange's corporate sustainability index

Author:
Ribas, Luiz César,   et al.   ; Reale, Ricardo; Magro, Teresa Cristina;     Show all 3 Authors
Source:
Journal of cleaner production 2017
ISSN:
0959-6526
Subject:
biodiversity; biodiversity conservation; business enterprises; cellulose; certification; climate change; consciousness; conservation areas; corporate social responsibility; corporations; economic sectors; ecosystem services; ecosystems; environmental impact; environmental management; paper; pulp and paper industry; social welfare; stock exchange; sustainable development; Brazil
Abstract:
... Anthropization of natural areas accelerated biodiversity loss and climate changes. Thus, it is imperative that all economic sectors adjust to sustainability precepts, collaborating to the maintenance of ecosystems. Therefore, we questioned: Are sustainable companies developing sufficient actions to preserve and/or conserve biomes where they are installed? To answer, we estimated the biodiversity i ...
DOI:
10.1016/j.jclepro.2017.09.123

2. Structural properties and foaming of plant cell wall polysaccharide dispersions

Author:
Beatrice, Cesar A.G.,   et al.   ; Rosa-Sibakov, Natalia; Lille, Martina; Sözer, Nesli; Poutanen, Kaisa; Ketoja, Jukka A.;     Show all 6 Authors
Source:
Carbohydrate polymers 2017 v.173 pp. 508-518
ISSN:
0144-8617
Subject:
air; bubbles; cell walls; cellulose; dispersions; foaming; hardness; laccase; microscopy; modulus of elasticity; nanofibers; pectins; storage modulus; tomography; xylan; xyloglucans
Abstract:
... Water suspensions of cellulose nanofibres with xylan, xyloglucan and pectin were studied for foaming and structural properties as a new means for food structuring. The dispersions were analysed with rheological measurements, microscopy and optical coherence tomography. A combination of xylan with TEMPO-oxidized nanocellulose produced a mixture with well-dispersed air bubbles, while the addition of ...
DOI:
10.1016/j.carbpol.2017.06.028

3. Organosolv Pretreatment of Sugar Cane Bagasse for Bioethanol Production

Author:
Santos, Júlio César,   et al.   ; Terán Hilares, Ruly; Swerts, Mateus Pereira; Ahmed, Muhammad Ajaz; Ramos, Lucas; da Silva, Silvio Silvério;     Show all 6 Authors
Source:
Industrial & engineering chemistry process design and development 2017 v.56 no.14 pp. 3833-3838
ISSN:
1520-5045
Subject:
Saccharomyces cerevisiae; biodiesel; biomass; cellulose; digestibility; ethanol; ethanol production; fuel production; glycerol; lignocellulose; prices; process design; sugarcane bagasse; temperature
Abstract:
... A reduction in glycerol price has been observed in the last years, considering it is a byproduct of biodiesel production. This fact has motivated studies about alternative uses for this compound, as in pretreatment of lignocellulosic biomass to produce ethanol, another biofuel of interest. In this context, glycerol acid-pretreatment of sugar cane bagasse (SCB) was evaluated in terms of temperature ...
DOI:
10.1021/acs.iecr.7b00079

4. Hydrodynamic cavitation as an efficient pretreatment method for lignocellulosic biomass: A parametric study

Author:
Santos, Júlio César dos,   et al.   ; Terán Hilares, Ruly; de Almeida, Gabriela Faria; Ahmed, Muhammad Ajaz; Antunes, Felipe A.F.; da Silva, Silvio Silvério; Han, Jong-In;     Show all 7 Authors
Source:
Bioresource technology 2017 v.235 pp. 301-308
ISSN:
0960-8524
Subject:
biomass; cellulose; hemicellulose; hydrodynamics; hydrolysis; lignocellulose; response surface methodology; sodium hydroxide; sugarcane bagasse; temperature
Abstract:
... Hydrodynamic cavitation (HC), which is a highly destructive force, was employed for pretreatment of sugarcane bagasse (SCB). The efficacy of HC was studied using response surface methodology (RSM) with determining parameters varied: inlet pressure of 1–3bar, temperature of 40–70°C, and alkaline concentration of 0.1–0.3M. At the best condition (3bar, 70°C and 0.3M NaOH), 93.05% and 94.45% of hydrol ...
DOI:
10.1016/j.biortech.2017.03.125

5. Production and characterization of bacterial cellulose membranes with hyaluronic acid from chicken comb

Author:
Tischer, Cesar Augusto,   et al.   ; de Oliveira, Sabrina Alves; da Silva, Bruno Campos; Riegel-Vidotti, Izabel Cristina; Urbano, Alexandre; de Sousa Faria-Tischer, Paula Cristina;     Show all 6 Authors
Source:
International journal of biological macromolecules 2017 v.97 pp. 642-653
ISSN:
0141-8130
Subject:
Gluconacetobacter hansenii; biocompatible materials; biofilm; cellulose; chickens; composite polymers; crystal structure; extracellular matrix; fermentation; hyaluronic acid; molecular weight; roughness; thermal stability; tissue engineering; tissue repair
Abstract:
... The bacterial cellulose (BC), from Gluconacetobacter hansenii, is a biofilm with a high degree of crystallinity that can be used for therapeutic purposes and as a candidate for healing wounds. Hyaluronic acid (HA) is a constitutive polysaccharide found in the extracellular matrix and is a material used in tissue engineering and scaffolding for tissue regeneration. In this study, polymeric composit ...
DOI:
10.1016/j.ijbiomac.2017.01.077

6. Polyethylene cellulose nanofibrils nanocomposites

Author:
Beatrice, Cesar Augusto Gonçalves,   et al.   ; Maia, Thiago Henrique Silveira; Larocca, Nelson Marcos; de Menezes, Aparecido Júnior; de Freitas Siqueira, Gilberto; Pessan, Luiz Antonio; Dufresne, Alain; França, Marcos Pini; de Almeida Lucas, Alessandra;     Show all 9 Authors
Source:
Carbohydrate polymers 2017 v.173 pp. 50-56
ISSN:
0144-8617
Subject:
acrylic acid; cellulose; cellulose microfibrils; composite polymers; dispersions; mechanical properties; melting; modulus of elasticity; nanocomposites; polyethylene; polyolefin; scanning electron microscopy
Abstract:
... This paper investigates the use of an aqueous dispersion of polyethylene copolymer with a relatively high content of acrylic acid as a compatibilizer and as an alternative medium to obtain polyethylene CNF nanocomposites. The CNF content was varied from 1 to 90wt% and the appearance, optical, thermal, mechanical and rheological properties, as well the morphology of the films were evaluated. The PE ...
DOI:
10.1016/j.carbpol.2017.05.089