Ethanol production by mixed-cultures ofPaenibacillus sp. andZymomonas mobilis using the raw starchy material from sweet potato

2009 ◽  
Vol 59 (4) ◽  
pp. 749-754 ◽  
Author(s):  
Ming-Xiong He ◽  
Yi Li ◽  
Xun Liu ◽  
Fan Bai ◽  
Hong Feng ◽  
...  
Keyword(s):  
Ethanol Production ◽  
Sweet Potato ◽  
Mixed Cultures ◽  
Starchy Material

Rapid Ethanol Production from Fresh Sweet Potato

2010 ◽  
Vol 2009 (3) ◽  
pp. 405-409
Author(s):  
Naikun SHEN ◽  
Hai ZHAO ◽  
Mingzhe GAN ◽  
Yanling JIN ◽  
Lingling ZHOU ◽  
...  
Keyword(s):  
Ethanol Production ◽  
Sweet Potato

Application of low-cost algal nitrogen source feeding in fuel ethanol production using high gravity sweet potato medium

2012 ◽  
Vol 160 (3-4) ◽  
pp. 229-235 ◽  
Author(s):  
Yu Shen ◽  
Jin-Song Guo ◽  
You-Peng Chen ◽  
Hai-Dong Zhang ◽  
Xu-Xu Zheng ◽  
...  
Keyword(s):  
Ethanol Production ◽  
Nitrogen Source ◽  
Sweet Potato ◽  
Low Cost ◽  
Fuel Ethanol ◽  
High Gravity

scholarly journals POTENCIAL DE CLONES EXPERIMENTAIS DE BATATA-DOCE PARA PRODUÇÃO DE ETANOL

Nativa ◽  
2018 ◽  
Vol 6 (4) ◽  
pp. 352
Author(s):  
Adriano Mendes Lourenço ◽  
Aline Torquato Tavares ◽  
Tiago Alves Ferreira ◽  
Danilo Alves da Silva Porto Lopes ◽  
João Victor Gonçalves Carline ◽  
...  
Keyword(s):  
Ethanol Production ◽  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Ethanol Yield ◽  
Starch Content ◽  
Great Ability ◽  
Ethanol Yields ◽  
Root Starch ◽  
Breeding Selection ◽  
Starch Yield

A batata-doce (Ipomoea batatas (L.) Lam.) tem sido reportada como uma das espécies de planta com grande capacidade de converter biomassa em matéria prima para produção de etanol. O objetivo do trabalho foi avaliar o potencial de clones de batata-doce para produção de etanol. Foram avaliados 60 clones de batata-doce para produtividade de raízes, teor de amido nas raízes, produtividade de amido, coloração da casca e da polpa e o rendimento de etanol. O clone BDTO#122,32 e as cultivares Ana Clara e Carolina Vitória com média de 46,77; 42,75 e 41,25 t ha-¹, respectivamente, foram os que mais conseguiram acumular biomassa na forma de raiz. Os clones que apresentam as maiores médias de produtividade de amido por hectare foram BDTO#144.22 e BDTO#100.23, com valores de 15,46 e 14,16% t ha-1, com rendimentos de etanol de 8,33 e 7,63 m³ ha-¹. Os clones BDTO#144.22 e BDTO#100.23 apresentaram as maiores médias de produtividade de amido por hectare e rendimento de etanol, sendo, portanto, os mais promissores para a produção de etanol.Palavras-chave: Ipomoea batatas (L.) Lam, melhoramento genético, seleção, biocombustível. POTENTIAL OF EXPERIMENTAL CLONES OF SWEET POTATO FOR ETHANOL PRODUCTION ABSTRACT:Sweet potato (Ipomoea batatas (L.) Lam.) Has been reported as one of the plant species with great ability to convert biomass into feedstock for ethanol production. The objective of this work was to evaluate the potential of sweet potato clones for ethanol production. Twenty-six sweet potato clones were evaluated for root productivity, root starch content, starch yield, bark and pulp color, and ethanol yield. Clone BDTO # 122.32 and cultivars Ana Clara and Carolina Vitória averaging 46.77; 42.75 and 41.25 t ha-1, respectively, were the ones that were able to accumulate biomass in the root form. The clones presenting the highest starch productivity per hectare were BDTO # 144.22 and BDTO # 100.23, with values of 15.46 and 14.16% t ha-1, with ethanol yields of 8.33 and 7.63 m³ ha-¹. The clones BDTO # 144.22 and BDTO # 100.23 showed the highest averages of starch productivity per hectare and yield of ethanol, thus being the most promising for the production of ethanol.Keywords: Ipomoea potatoes (L.) Lam, breeding, selection, biofuel.

Simultaneous hydrogen and ethanol production from sweet potato via dark fermentation

2012 ◽  
Vol 27 ◽  
pp. 155-164 ◽  
Author(s):  
Chyi-How Lay ◽  
Hao-Chi Lin ◽  
Biswarup Sen ◽  
Chen-Yeon Chu ◽  
Chiu-Yue Lin
Keyword(s):  
Ethanol Production ◽  
Sweet Potato ◽  
Dark Fermentation

scholarly journals Optimization of saccharification prospective from starch of sweet potato roots through acid-enzyme hydrolysis: structural, chemical and elemental profiling

2021 ◽  
Vol 64 (2) ◽  
pp. 139-150
Author(s):  
Suman Jagatee ◽  
Sonali Priyadarshini ◽  
Chinmay Pradhan ◽  
Santi L. Sahoo ◽  
Rama C. Mohanty ◽  
...  
Keyword(s):  
Ethanol Production ◽  
Sweet Potato ◽  
Elemental Analysis ◽  
Fourier Transforms ◽  
Mutual Effect ◽  
Total Sugar ◽  
Enzyme Hydrolysis ◽  
Potato Root ◽  
Stretching Vibration ◽  
Efficient Alternative

The sweet potato root, a potent source of starch which is being considered as an efficient alternative for fuel ethanol production in recent times. The starchy substrate needs to be subsequently dextrinized and saccharified so as to enhance the utilization of its carbohydrates for ethanol production. In the present investigation, acid-enzyme process was conducted for the dextrinization and saccharification of sweet potato root flour (SPRF). The best optimized condition for dextrinization was achieved with an incubation period of 60 min, temperature 100 ºC and 1M HCl. However, for saccharification, the best result was obtained with an incubation of 18 h, pH 4, temperature 65 ºC and 1000 U concentration of Palkodex®. After the dextrinization process, maximum concentrations of total sugar and hydroxymethylfurfural (HMF) [380.44 ± 3.17 g/kg and 13.28 ± 0.25 mg/g, respectively] were released. Nevertheless, after saccharification, 658.80 ± 7.83 g/kg of total sugar was obtained which was about 73% more than that of dextrinization. After successful dextrinization and saccharification, the structural, chemical and elemental analysis were investigated using techniques such as scanning electron microscopy (SEM), Fourier-transforms infrared spectroscopy (FTIR) and energy-dispersive X-ray fluorescence spectrophotometer (EDXRF), respectively. Effective hydrolysis was demonstrated in thin layer chromatography (TLC) where the HCl was able to generate monomeric sugar such as glucose and maltose. On the other hand, only glucose is synthesized on the mutual effect of HCl and Palkodex®. The SEM findings indicate that the rough structure of both dextrinized and saccharified sample was gained due to the vigorous effect of both acid and enzyme subsequently. The saccharified SPRF when subjected to fermentation with Saccharomyces cerevisiae and Zymomonas mobilis separately, it was observed that Z. mobilis produced more stretching vibration of –OH than S. cerevisiae, which evidenced the better production of bioethanol. Additionally, evaluation of the influence of S. cerevisiae and Z. mobilis through elemental analysis revealed upsurge in the concentrations of S, Cl, Ca, Mn, Fe and Zn and decline in the concentrations of P, K and Cu in the fermented residue of S. cerevisiae and Z. mobilis, however, Z. mobilis showed little more variation than that of S. cerevisiae.

Comparison on Ethanol Production with 4 Varieties of Sweet Potato at Different Growth Stages*

2010 ◽  
Vol 2009 (2) ◽  
pp. 267-270
Author(s):  
Yanling JIN ◽  
Mingzhe GAN ◽  
Lingling ZHOU ◽  
Huiling XUE ◽  
Liang ZHANG ◽  
...  
Keyword(s):  
Ethanol Production ◽  
Sweet Potato ◽  
Growth Stages ◽  
Different Growth Stages

Low Viscosity and Rapid Saccharification Pretreatment of Fresh Sweet Potato for Ethanol Production*

2010 ◽  
Vol 2009 (2) ◽  
pp. 262-266
Author(s):  
Mingzhe GAN ◽  
Yanlin JIN ◽  
Linlin ZHOU ◽  
Tiansheng QI ◽  
Hai ZHAO
Keyword(s):  
Ethanol Production ◽  
Sweet Potato ◽  
Low Viscosity

Co-expression of α-amylase and Glucoamylase inZymomonas mobilisand Direct Ethanol Production from Sweet Potato

2012 ◽  
Vol 18 (5) ◽  
pp. 785 ◽  
Author(s):  
Guangjun WANG ◽  
Mingxiong HE ◽  
Yizheng ZHANG
Keyword(s):  
Ethanol Production ◽  
Sweet Potato
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