Fermentable sugars recovery from grape stalks for bioethanol production

2013 ◽  
Vol 60 ◽  
pp. 553-558 ◽  
Author(s):  
I. Egüés ◽  
L. Serrano ◽  
D. Amendola ◽  
D.M. De Faveri ◽  
G. Spigno ◽  
...  
Keyword(s):  
Fermentable Sugars ◽  
Bioethanol Production ◽  
Grape Stalks

Optimization of the acid pretreatment of rice hulls to obtain fermentable sugars for bioethanol production

2013 ◽  
Vol 42 ◽  
pp. 363-368 ◽  
Author(s):  
E.P. Dagnino ◽  
E.R. Chamorro ◽  
S.D. Romano ◽  
F.E. Felissia ◽  
M.C. Area
Keyword(s):  
Fermentable Sugars ◽  
Bioethanol Production ◽  
Acid Pretreatment ◽  
Rice Hulls

scholarly journals Bioethanol production from lignocellulosic sugarcane leaves and tops

2017 ◽  
Vol 28 (3) ◽  
pp. 1 ◽  
Author(s):  
Charlie Marembu Dodo ◽  
Samphson Mamphweli ◽  
Omobola Okoh
Keyword(s):  
Acid Hydrolysis ◽  
Sodium Hydroxide ◽  
Cost Effective ◽  
Enzyme Hydrolysis ◽  
Fermentable Sugars ◽  
Bioethanol Production ◽  
Dilute Acid ◽  
Dilute Acid Hydrolysis ◽  
Pre Treatment ◽  
Biological Methods

Bioethanol production is one of the most promising possible substitutes for fossil-based fuels, but there is a need to make available cost-effective methods of production if it is to be successful. Various methods for the production of bioethanol using different feedstocks have been explored. Bioethanol synthesis from sugarcane, their tops and leaves have generally been regarded as waste and discarded. This investigation examined the use of lignocellulosic sugarcane leaves and tops as biomass and evaluated their hydrolysate content. The leaves and tops were hydrolysed using concentrated and dilute sulphuric acid and compared with a combination of oxidative alkali-peroxide pre-treatment with enzyme hydrolysis using the enzyme cellulysin® cellulase. Subsequent fermentation of the hydrolysates into bioethanol was done using the yeast saccharomyces cerevisae. The problem of acid hydrolysis to produce inhibitors was eliminated by overliming using calcium hydroxide and this treatment was subsequently compared with sodium hydroxide neutralisation. It was found that oxidative alkali pre-treatment with enzyme hydrolysis gave the highest yield of fermentable sugars of 38% (g/g) for 7% (v/v) peroxide pretreated biomass than 36% (g/g) for 5% (v/v) with the least inhibitors. Concentrated and dilute acid hydrolysis each gave yields of 25% (g/g) and 22% (g/g) respectively, although the acid required a neutralisation step, resulting in dilution. Alkaline neutralisation of acid hydrolysates using sodium hydroxide resulted in less dilution and loss of fermentable sugars, compared with overliming. Higher yields of bioethanol of 13.7 g/l were obtained from enzyme hydrolysates than the 6.9 g/l ethanol from dilute acid hydrolysates. There was more bioethanol yield of 13.7 g/l after 72 hours of fermentation with the yeast than the 7.0 g/l bioethanol after 24 hours.This research showed that it is possible to use sugarcane waste material to supplement biofuel requirements and that combining the chemical and biological methods of pretreatments can give higher yields at a faster rate.

scholarly journals Advancement of fermentable sugars from fresh elephant ear plant weed for efficient bioethanol production

2021 ◽  
Author(s):  
Marlen Trejo ◽  
Prakash Bhuyar ◽  
Yuwalee Unpaprom ◽  
Natthawud Dussadee ◽  
Rameshprabu Ramaraj
Keyword(s):  
Fermentable Sugars ◽  
Bioethanol Production

scholarly journals Enzymatic Hydrolysis and Fermentation of Banana Pseudostem Hydrolysate to Produce Bioethanol

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Lesetja Moraba Legodi ◽  
Daniel Coenrad LaGrange ◽  
Elbert Lukas Jansen van Rensburg ◽  
Ignatious Ncube
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Enzymatic Hydrolysis ◽  
Agricultural Waste ◽  
Hot Water ◽  
Fermentable Sugars ◽  
Protein G ◽  
Bioethanol Production ◽  
Liquid Hot Water ◽  
Separate Hydrolysis And Fermentation ◽  
Holocellulose Content

Banana pseudostem (BPS) is an agricultural waste with a high holocellulose content, which, upon hydrolysis, releases fermentable sugars that can be used for bioethanol production. Different pretreatment methods, namely, 3% (w/v) NaOH, 5% (v/v) H2SO4, and liquid hot water, applied on the BPS resulted in the availability of 52%, 48%, and 25% cellulose after treatment, respectively. Saccharification of the pretreated BPS with 10 FPU/g dry solids (29.3 mg protein/g d.s) crude enzyme from Trichoderma harzianum LMLBP07 13-5 at 50°C and a substrate loading of 10 to 15% released 3.8 to 21.8 g/L and from T. longibrachiatum LMLSAUL 14-1 released 5.4 to 43.5 g/L glucose to the biomass. Ethanol was produced through separate hydrolysis and fermentation (SHF) of alkaline pretreated BPS hydrolysate using Saccharomyces cerevisiae UL01 at 30°C and 100 rpm. Highest ethanol produced was 17.6 g/L. Banana pseudostem was shown as a potentially cheap substrate for bioethanol production.

scholarly journals Release optimization of fermentable sugars from defatted rice bran for bioethanol production

2018 ◽  
Vol 40 (1) ◽  
pp. 35000 ◽  
Author(s):  
Francieli Begnini Siepmann ◽  
Cristiane Canan ◽  
Manoella Moura Monteiro de Jesus ◽  
Catiussa Mayara Pazuch ◽  
Eliane Colla
Keyword(s):  
Rice Bran ◽  
Fermentable Sugars ◽  
Bioethanol Production ◽  
Defatted Rice Bran
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