Comparison of ethanol production performance in 10 varieties of sweet potato at different growth stages

Jin, Yanling; Fang, Yang; Guo-hua, Zhang; Zhou, Lingling; Zhao, Hai

doi:10.1016/j.actao.2012.05.008

Cited by 22 publications

(15 citation statements)

References 13 publications

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“…Such yields are very promising, since agroindustrial crops used for ethanol production in Uruguay, mainly sugar cane and grain sorghum, have yields of 3600 and 1800 L/ha, respectively (Carrasco-Letelier et al 2013). Similar results were found by Jin et al (2012). …”

Section: Resultssupporting

confidence: 92%

Evaluation of sweet potato for fuel bioethanol production: hydrolysis and fermentation

et al. 2013

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The enzymatic starch hydrolysis and bioethanol production from a variety of sweet potato developed for bioenergy purposes (K 9807.1) on the basis of its high starch yields, was studied. Drying at 55°C and 95°C of sweet potato neither affected the sugar content nor the starch enzymatic hydrolysis efficiency. Simultaneous saccharification and ethanol fermentations for dry matter ratio of sweet potato to water from 1:8 to 1:2 (w/v) were studied. Fresh sweet potato and dried at 55°C (flour) were assayed. At ratios of 1:8, similar results for fresh sweet potato and flour in terms of ethanol concentration (38–45 g/L), fermentation time (16 h) and sugar conversion (~ 100%) were found. At higher dry matter content, faster full conversion were observed using flour. A higher ratio than that for fresh sweet potato (1:2.2) did not improve the final ethanol concentration (100 g/L) and yields. High ethanol yields were found for VHG (very high gravity) conditions. The sweet potato used is an attractive raw matter for fuel ethanol, since up to 4800 L ethanol per hectare can be obtained.

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Section: Resultssupporting

confidence: 92%

Evaluation of sweet potato for fuel bioethanol production: hydrolysis and fermentation

et al. 2013

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“…Determining the most appropriate variety and harvest time of cassava is also essential for the ethanol production industry. There have been many reports about the effect of the feedstock variety and harvest time on the yield and efficiency of ethanol production, such as sugarcane , corn , sorghum , and sweet potato . However, our understanding of the effect of the cassava variety and harvest time on the properties that are relevant to their industrial applications is still limited.…”

Section: Introductionmentioning

confidence: 99%

Rheological characteristics and genotype correlation of cassava root for very high gravity ethanol production: The influence of cassava varieties and harvest times

Sakdaronnarong

Sraphet

Srisawad

et al. 2019

Biotech and App Biochem

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In very high gravity (VHG) ethanol fermentation, the rheological properties of native cassava significantly influence heat and mass transfer, mixing energy, and, thus, the yield of all steps. This study investigated the effect of cassava varieties and their harvest times on starch liquefaction, saccharification, and fermentation. The genotype correlation of the starch properties was revealed for the most suitable cassava varieties. First, the starch content, amylose content, total reducing sugar from liquefaction and saccharification, pasting properties, and ethanol yields of six cassava varieties (Huay Bong 60, Hanatee, Kasetsart 50, Pirun 1, Pirun 2, and Rayong 11) at 6‐, 9‐, 12‐, and 15‐month harvest times were evaluated. The amylose content increased significantly from the 6th to the 12th month but slightly decreased at the 15th month. It was observed that the starch content contributed to a more substantial influence on the change in peak viscosity than on the amylose content. Ethanol fermentation using Saccharomyces cerevisiae TISTR5606 showed that the Rayong 11 variety at the 15‐month harvest time provided the highest ethanol concentration of 104.7 ± 4.1 g L−1 and an ethanol yield of 0.4 ± 0.1 g ethanol g−1 reducing sugar, which corresponded to 74.5% of the theoretical yield.

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“…Now-a-days, bioethanol has been recognized as a promising future alternative to petroleum-derived transportation fuels (Dias, Junqueira, Rossell, Filho, & Bonomi, 2013) owing to its high octane number (Hu, Heitmann, & Rojas, 2008), low cetane number and high heat of vaporization (Jin, Fang, Zhang, Zhou, & Zhao, 2012) as it is envisaged to be appropriate for mixing with petrol. Hence, production of ethanol from lignocellulosic biomasses has attracted many researchers due to their availability, abundance and relatively low cost (Ferreira, Gil, Queiroz, Duarte, & Domingues, 2010;Njoku, Ahring, & Uellendahl, 2012;Singhania, Patel, Sukumaran, Larroche, & Pandey, 2013).…”

mentioning

confidence: 99%

Augmented digestion of lignocellulose by steam explosion, acid and alkaline pretreatment methods: A review

Singh

Suhag

Dhaka

2015

Carbohydrate Polymers

409

177

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Comparison of ethanol production performance in 10 varieties of sweet potato at different growth stages

Cited by 22 publications

References 13 publications

Evaluation of sweet potato for fuel bioethanol production: hydrolysis and fermentation

Evaluation of sweet potato for fuel bioethanol production: hydrolysis and fermentation

Rheological characteristics and genotype correlation of cassava root for very high gravity ethanol production: The influence of cassava varieties and harvest times

Augmented digestion of lignocellulose by steam explosion, acid and alkaline pretreatment methods: A review

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