Evaluation of Composition, Characterization and Enzymatic Hydrolysis of Pretreated Sugar Cane Bagasse

Abstract

-Glucose production from sugarcane bagasse was investigated. Sugarcane bagasse was pretreated by four different methods: combined acid and alkaline, combined hydrothermal and alkaline, alkaline, and peroxide pretreatment. The raw material and the solid fraction of the pretreated bagasse were characterized according to the composition, SEM, X-ray and FTIR analysis. Glucose production after enzymatic hydrolysis of the pretreated bagasse was also evaluated. All these results were used to develop relationships between these parameters to understand better and improve this process. The results showed that the alkaline pretreatment, using sodium hydroxide, was able to reduce the amount of lignin in the sugarcane bagasse, leading to a better performance in glucose production after the pretreatment process and enzymatic hydrolysis. A good xylose production was also observed.

Effect of Lime Pretreatment on Microstructure of Cassava Stalk Fibers and Growth of Aspergillus niger

“…Lime pretreatment resulted in disinteg-rating fibre structures compared to that structure without the lime pretreatment. This result was in line with the finding of Guilherme et al (2015). They found that various pretreatment of sugarcane bagasse resulted in disruption of sugarcane bagasse fiber.…”

Comparison between Properties of Biochar Produced by Traditional and Controlled Pyrolysis

“…These variations can be attributed to the presence of different organic constituents in the two feedstocks that indicated higher lignin in RHF which is amorphous and hydrophobic polymer with high molecular weight and numerous functional groups of aromatic substructure (Lee et al, 2013). The % of cellulose, hemicellulose and lignin for both biomaterials are similar with those in the previous studies (Ludueña et al, 2011, Rezende et al, 2011, Kumar et al, 2013, Guilherme et al, 2015, Wang et al, 2016.…”

“…This has been observed for the two feedstocks and disappeared in the biochars as a result of dehydration of cellulosic and ligneous components (Zhao et al, 2013 andGuilherme et al, 2015) and dehydrogenation of methylene groups, which yielded increasingly condensed structures (R−CH 2 −R → R=CH−R → R=C=R), controlled biochar recalcitrance (Harvey et al, 2012 andZhao et al, 2013). Similar observation has been found in the band at 1055.10 cm -1 in SCBF only (alcohol C-O stretch and aliphatic amines C-N).…”

Physicochemical treatment for improving bioconversion of cassava industrial residues

“…The absorption band at 1320 cm 21 was attributed to CAH vibration in cellulose and C 1 AO vibration in syringyl derivatives [27] which was observed in microwave assisted acid pretreatment. The band at 1150-1050 cm 21 are related to glycosidic linkage and CAOAC vibrational stretching in cellulose and observed in pretreated biomass [26]. As the morphologies of pretreated samples observed to be different, FTIR analysis also shows bond changes in the different pretreated cassava pulp and raw cassava pulp.…”

“…The band at 1620 cm 21 was found in raw cassava pulp but absent in microwave chemical pretreatment, which is related to OH bending of absorbed water in the carbonyl stretching region, as hemicelluloses have high affinity towards water [25]. The bands at 1600, 1500, 1400 cm 21 show varying intensity for different pretreatment methods which are assigned to aromatic ring skeletal stretch [26]. The absorption band at 1320 cm 21 was attributed to CAH vibration in cellulose and C 1 AO vibration in syringyl derivatives [27] which was observed in microwave assisted acid pretreatment.…”