Ethanol production from macaúba ( Acrocomia aculeata ) presscake hemicellulosic hydrolysate by Candida boidinii UFMG14

Abstract

Yeasts capable of growth on xylose were isolated from macaúba (Acrocomia aculeata) fruit, a Brazilian palm tree with great potential for use as biodiesel feedstock production. Candida boidinii UFMG14 strain achieved the highest ethanol production (5 g/L) and was chosen to ferment macaúba presscake hemicellulosic hydrolysate (MPHH). The MPHH was produced by the first time in this work and the resultant fivefold concentrate showed considerable sugar content (52.3 and 34.2 g/L xylose and glucose, respectively) and low furfural (0.01 g/L) and hydroxymethylfurfural (0.15 g/L) concentrations. C. boidinii UFMG14 fermentation was evaluated in supplemented and non-supplemented MPHH containing either 10 or 25 g/L of xylose. The maximum ethanol production (12 g/L) was observed after 48 h of fermentation. The ethanol yield was significantly affected by supplementation and concentration of MPHH while ethanol productivity was affected only by MPHH concentration. This is the first study demonstrating theC. boidinii potential for ethanol production from hemicellulose byproducts.

Quality Parameters of Mechanically Extracted Edible Macauba Oils (Acrocomia aculeata) for Potential Food and Alternative Industrial Feedstock Application

“…The coordinates 19° 52′ 23.1″S; 43° 57′ 52.9 ″ W, 19° 52′ 20.4″S; 43° 58′ 22.5″W and 19° 52′ 10.0 ″ S; 43° 57′ 58.0″W correspond to the area of the Universidade Federal de Minas Gerais − UFMG, located in the metropolitan region of Belo Horizonte, Minas Gerais, Brazil. Once collected, the fruit was rinsed with tap water, immersed for 5 min in a 2% sodium hypochlorite solution and dried at room temperature. The epicarp was then broken to access the mesocarp which was promptly separated from the fresh fruit and cut by hand with stainless steel knives into slices with an average linear dimension of 0.15 m. The storage occurred at a subfreezing temperature …”

Acrocomia spp.: neglected crop, ballyhooed multipurpose palm or fit for the bioeconomy? A review

“…Respecting bioenergy, research focused on the synthesis of acrocomia biodiesel, its physicochemical characterization, as well as potential and economic perspectives (Aguieiras et al 2014;Basso et al 2013;Bressani et al 2015;Carvalho et al 2013;Lopes et al 2013;Navarro-Díaz et al 2014). Since 2013, research has also covered bioethanol production (Gonçalves et al 2013). From a value chain perspective, the prospects of using acrocomia as biodiesel feedstock were emphasized, driving the implementation of acrocomia as a non-food crop species (César et al 2015).…”

The complete plastome of macaw palm [Acrocomia aculeata (Jacq.) Lodd. ex Mart.] and extensive molecular analyses of the evolution of plastid genes in Arecaceae

“…The integral use of the fruits still provides Electronic supplementary material The online version of this article (http s://doi.org/10.1007 /s004 25-018-2841 -x) contains supplementary material, which is available to authorized users. biomass feedstock for several industrial applications focusing on sustainable energy such as ethanol and charcoal (Vilas-Boas et al 2010;Gonçalves et al 2013;Pires et al 2013). The macaw palm has interesting agronomic and ecological features because it can occupy degraded areas or agroforestry systems given that it has high plasticity to grow in different ecosystems (Henderson et al 1995;Motoike and Kuki 2009;Pires et al 2013) avoiding conflict with areas of food production.…”