Performance of sweet potato clones for bioethanol production in different cultivation periods

Oliveira, Alisson Marcel Souza de; Blank, Arie Fitzgerald; Alves, Rodrigo Pereira; Arrigoni-Blank, Maria de Fátima; Maluf, Wilson Roberto; Fernandes, Roberta Pereira Miranda

doi:10.1590/s0102-053620170109

Cited by 12 publications

(15 citation statements)

References 14 publications

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“…Nonetheless, these levels were lower than those found by Oliveira et al (2017), who found values above 18 % for all the genotypes studied; however, in this experiment different genotypes were used, as previously explained.…”

Section: Starch and Reducing Sugar Levelscontrasting

confidence: 52%

“…On the other hand, Oliveira, Blank, Alves, Arrigon-Blank, Maluf & Fernandes (2017), reported an experiment in Sergipe, Brazil with cultivars showing a smaller amounts of dry mass than those found in the first cycle of three months for all cultivars of the experiment. Alternatively, cultivars of Sergipe, IPB 007, IPB 038, IPB 099, IPB 079 were compared with two of the cultivars used in our study, i.e.…”

Section: Discussion Biomassmentioning

confidence: 96%

“…UGA 08 and UGA 92. Considering the second cycle of the experiment, Oliveira et al (2017), found that cultivars IPB (34.44 %) and IPB 149 (38 %) had achieved a higher dry weight percentages than UGA 08 and UGA 92 (both showed 32%). In the third cycle with 210 days, cultivars Brazilândia Rosada and IPB 149 remained showing higher values than the genotypes of the highest value in the screening experiment.…”

Section: Discussion Biomassmentioning

confidence: 99%

“…However, climate may have also been a decisive factor for the low quantity found in the experiment of Oliveira et al (2017).…”

Section: Starch and Reducing Sugar Levelsmentioning

confidence: 99%

“…Among its priorities, preparation of the raw material to be used for the manufacturing and its own fermentation system must be highlighted. However, sweet potato in addition to sugar, also has starch; therefore, is necessary to convert the starch to sugars and ferment these, having to add cooking and saccharification procedures from root samples (Martins, Romanzini, Baldin, Trierweiler & Trierweiler, 2016 ;Oliveira et al, 2017).…”

Section: Starch and Reducing Sugar Levelsmentioning

confidence: 99%

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Alcohol production from sweet potato (Ipomoea batatas (L.) Lam.) genotypes in fermentative medium

et al. 2018

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Ethanol is one of the most promising fuels in Brazil, but its production is centralized in sugarcane cultivation, and is currently in search for other sources alcohol producing biomass to replace sugarcane monoculture. The aim of this study was to study fermentation process variables such as fermentation time (72 and 96 hours), addition of nutrients (with and without addition) and yeasts (dry and fresh organic yeast), employed in ethanol production from two sweet potato (Ipomoea batatas (L.) Lam.) genotypes: UGA 05 and UGA 77. Alcohol evaluation content in °GL was performed in a completely randomized design according to two factorial schemes (2 2 and 2 3 ), and results obtained were analyzed using Design Expert® software version 8. Results of the factorial design 2 2 indicate that fermentation time in alcohol production had a significant effect on the process, suggesting that alcohol production is more efficient in 72 hours of fermentation and without the inclusion of nutrients. In factorial design 2 3 , the interactions between time of fermentation with genotypes and between time and inclusion of yeast showed significant effects and altered alcohol production. Fermentation process shows a significant difference as a function of genetic material and yeasts used pointing out fermentation of the flour must of genotype UGA 77 under fresh yeast action and 72 hours of fermentation.Keywords: Biofuel; ethanol production; fermentation; saccharification; starch; water content. ResumenEl etanol es uno de los combustibles más prometedores en Brasil, pero su producción está centralizada en el cultivo de la caña de azúcar, y actualmente se están buscando otras fuentes de biomasa productora de alcohol para reemplazar el monocultivo de la caña de azúcar. El objetivo de este estudio fue evaluar las variables del proceso de fermentación como el tiempo de fermentación (72 y 96 horas), adición de nutrientes (con y sin adición) y levaduras (levadura orgánica seca y fresca) empleadas en la producción de etanol a partir de dos genotipos de batata (Ipomoea batatas L.): UGA 05 y UGA 77. El contenido del alcohol evaluado en °GL se realizó en un diseño completamente al azar según dos esquemas factoriales (2 2 y 2 3 ), y los resultados obtenidos se analizaron con el software Design Expert® versión 8. Los resultados del diseño factorial 2 2 indican que el tiempo de fermentación en la producción de alcohol tuvo un efecto significativo en el proceso, lo que sugiere que la producción de alcohol es más eficiente en 72 horas de fermentación y sin la inclusión de nutrientes. En el diseño factorial 2 3 , las interacciones entre el tiempo de fermentación con genotipos, y entre el tiempo y la inclusión de la levadura mostraron efectos significativos y alteraron la producción de alcohol. El proceso de fermentación muestra una diferencia significativa en función del material genético y las levaduras utilizadas, señalando la fermentación del mosto de harina del genotipo UGA 77 bajo acción de levadura fresca y 72 horas de fermentación.Palabras ...

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Section: Starch and Reducing Sugar Levelscontrasting

confidence: 52%

Section: Discussion Biomassmentioning

confidence: 96%

Section: Discussion Biomassmentioning

confidence: 99%

“…However, climate may have also been a decisive factor for the low quantity found in the experiment of Oliveira et al (2017).…”

Section: Starch and Reducing Sugar Levelsmentioning

confidence: 99%

Section: Starch and Reducing Sugar Levelsmentioning

confidence: 99%

See 3 more Smart Citations

Alcohol production from sweet potato (Ipomoea batatas (L.) Lam.) genotypes in fermentative medium

et al. 2018

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The potential of sweet potato biorefinery and development of alternative uses

et al. 2021

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The bioethanol production from the sweet potato variety BRS Cuia using three different strains of Saccharomyces cerevisiae (LPB1-93, ATCC-26602, and CA-11) was carried out in this research. Comparative analyses of consumed sugar, ethanol yield, and productivity (in tons per hectare) increased along with the concentration of cells in the inoculum. Additionally, to verify the aromatic quality of a potential sweet potato distilled spirit, volatile organic compounds were analyzed. The results showed a yield of over 90% ethanol. It was observed that the sugar consumption and ethanol production rates can be increased with a higher initial concentration of cells. This resulted in higher concentrations of ethanol in shorter times. From 100 g of the sweet potato variety BRS Cuia, the highest concentration of ethanol obtained was 25.74 g L−1 using the LPB1-93 strain. The estimated bioethanol production is about 10,000 L ha−1, with two sweet potatoes crops in a year. The ethanol production from the sweet potato variety BRS Cuia is viable, representing a sustainable alternative to fuel bioethanol, as well as an alcoholic beverage due to the volatile organic compounds present in the distilled fraction.

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Postharvest quality of two sweet potato cultivars submitted to different harvest ages

et al. 2022

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The quality of sweet potato roots is influenced by factors which precede harvest. Thus, the aim of this study was to correctly determine the harvest point and study the postharvest quality of two sweet potato cultivars harvested at different ages. The experiment was carried out at Universidade Federal de Roraima. The plants were grown from April to August, during rainy season, 2020. The harvest was carried out at 80, 95, 110, 125 and 140 days after planting (DAP). The tuberous roots were cleaned and the physicochemical traits of the pulp and peel were evaluated. Soluble solids, titratable acidity and SS/AT ratio were observed in greater quantity in the cultivar BD-02. The luminosity and chroma of the peel of the sweet potato roots were more intense in the cultivar BD-01 and the opposite was observed when characterizing the pulp of this cultivar. At 110 DAP, we verified the highest levels of reducing sugars and chroma of the peel, as well as lower values for the chroma of the pulp and °H of the peel. Thus, according to the results presented above, especially in relation to carbohydrate metabolism, productivity and dry matter accumulation, the cultivar BD-02, harvested at 110 DAP, showed the best postharvest traits under the experimental conditions presented in this study.

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Performance of sweet potato clones for bioethanol production in different cultivation periods

Cited by 12 publications

References 14 publications

Alcohol production from sweet potato (Ipomoea batatas (L.) Lam.) genotypes in fermentative medium

Alcohol production from sweet potato (Ipomoea batatas (L.) Lam.) genotypes in fermentative medium

The potential of sweet potato biorefinery and development of alternative uses

Postharvest quality of two sweet potato cultivars submitted to different harvest ages

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