Evaluation of Fermentation Conditions by Candida tropicalis for Xylitol Production from Sago Trunk Cortex

Mohamad, Nurul Lina; Kamal, Siti Mazlina Mustapa; Abdullah, Norhafizah; Ismail, I

doi:10.15376/biores.8.2.2499-2509

Cited by 7 publications

(6 citation statements)

References 19 publications

(15 reference statements)

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“… 30 , 39 , 40 Furthermore, to increase the xylitol yield from lignocellulosic materials, some studies looked at strategies such as hydrolysate detoxification or yeast adaptation, cell immobilization and varying the process conditions. 41 , 42 , 43 , 44 , 45 , 46 …”

Section: Discussionmentioning

confidence: 99%

The isolation of pentose-assimilating yeasts and their xylose fermentation potential

Martins

Bocchini

Bezzerra-Bussoli

et al. 2018

Brazilian Journal of Microbiology

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For the implementation of cellulosic ethanol technology, the maximum use of lignocellulosic materials is important to increase efficiency and to reduce costs. In this context, appropriate use of the pentose released by hemicellulose hydrolysis could improve de economic viability of this process. Since the Saccharomyces cerevisiae is unable to ferment the pentose, the search for pentose-fermenting microorganisms could be an alternative. In this work, the isolation of yeast strains from decaying vegetal materials, flowers, fruits and insects and their application for assimilation and alcoholic fermentation of xylose were carried out. From a total of 30 isolated strains, 12 were able to assimilate 30 g L−1 of xylose in 120 h. The strain Candida tropicalis S4 produced 6 g L−1 of ethanol from 56 g L−1 of xylose, while the strain C. tropicalis E2 produced 22 g L−1 of xylitol. The strains Candida oleophila G10.1 and Metschnikowia koreensis G18 consumed significant amount of xylose in aerobic cultivation releasing non-identified metabolites. The different materials in environment were source for pentose-assimilating yeast with variable metabolic profile.

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Section: Discussionmentioning

confidence: 99%

The isolation of pentose-assimilating yeasts and their xylose fermentation potential

Martins

Bocchini

Bezzerra-Bussoli

et al. 2018

Brazilian Journal of Microbiology

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“…Aunque no se ha probado el efecto de la aireación sobre el crecimiento de C. tropicalis, sí se ha reportado su actividad en fermentadores aireados con 0.325 vvm (Guneser et al 2016). Chandran y Das (2012) reportaron valores de producción de biomasa de 3.5 g/L a 35 ºC y pH 5 con dichos parámetros de cultivo, mientras que Mohamad et al (2013) reportaron 12 g/L.…”

Section: Parámetros óPtimos De Crecimientounclassified

BIODEGRADACIÓN DE PLAGUICIDAS ORGANOFOSFORADOS Y ORGANOCLORADOS POR Candida tropicalis Y Stenotrophomonas maltophilia EN MICROCOSMOS DEL SUELO

Castellanos

González

Soto

et al. 2021

RICA

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En México se han utilizado plaguicidas organofosforados y organoclorados que, debido a su persistencia en el ambiente, han causado efectos adversos sobre ecosistemas, cadenas tróficas y salud humana. Por tanto, es importante establecer protocolos de remediación en los sitios contaminados con este tipo de compuestos. En la presente investigación se utilizaron Candida tropicalis y Stenotrophomonas maltophilia en microcosmos del suelo para la biodegradación de malatión, paratión, clorpirifos, aldrín y lindano. Adicionalmente, se determinaron los parámetros óptimos de crecimiento para ambos microorganismos. La concentración inicial de plaguicidas fue de 130 mg/kg. C. tropicalis degradó en un valor alto el malatión (98.32 %) seguido de lindano (81.01 %) y clorpirifos (74.23 %), en tanto que S. maltophilia degradó el malatión (98.23 %), aldrín (80.17 %) y lindano (75.85 %). En cuanto a las condiciones de cultivo para la producción de altas densidades celulares a nivel biorreactor, se obtuvo un valor alto de biomasa (132 g/L) para C. tropicalis a 36 ºC, 140 rpm, pH 5 y una aireación de 2 vvm. En el caso de S. maltophilia, la biomasa fue menor respecto a la levadura (54 g/L) en las mejores condiciones de cultivo (28 ºC, 70 rpm, pH 5 y una aireación de 2 vvm). El presente trabajo evidenció por primera vez que la levadura C. tropicalis tiene la capacidad de degradar algunos plaguicidas organofosforados y organoclorados, y, debido a su fácil manejo en medio líquido, se propone como agente biológico para la remediación de suelos potencialmente contaminados con plaguicidas.

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“…Here 1/μ versus 1/S will allow K s to be evaluated while the intercept is 1/μ max (Mohamad et al, 2013).…”

Section: Growth Kinetics For Yeast Fermentationmentioning

confidence: 99%

“…Moreover, xylitol has already been commercialized as a popular sweetener in various foods, such as chewing gum, candy, baked goods, sweets, soft drinks and ice creams. Recently, the xylitol market is rising with high demand worldwide, due to increasingly health-conscious consumers and the fast growth of chewing gum sales (Franceschin et al, 2011;Mohamad et al, 2013). An integrated plant design for classical production of bioethanol from cellulose with an alternative use of hemicelluloses for xylitol production is outlined in Figure 4.…”

Section: Yeast Fermentation Withmentioning

confidence: 99%

A Review of Bioethanol Production from Plant-based Waste Biomass by Yeast Fermentation

Hossain

Zaini

Mahlia³

2017

IJTech

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Commercialization of bioethanol has recently intensified due to its market stability, low cost, sustainability, alternative fuel energy composition, greener output and colossal fossil fuel depletion. Recently, because of greenhouse intensity worldwide, many researches are ongoing to reprocess the waste as well as turning down the environmental pollution. With this scenario, the invention of bioethanol was hailed as a great accomplishment to transform waste biomass to fuel energy and in turn reduce the massive usages of fossil fuels. In this study, our review enlightens various sources of plant-based waste feed stocks as the raw materials for bioethanol production because they do not adversely impact the human food chain. However, the cheapest and conventional fermentation method, yeast fermentation is also emphasized here notably for waste biomass-to-bioethanol conversion. Since the key fermenting agent, yeast is readily available in local and international markets, it is more cost-effective in comparison with other fermentation agents. Furthermore, yeast has genuine natural fermentation capability biologically and it produces zero chemical waste. This review also concerns a detailed overview of the biological conversion processes of lignocellulosic waste biomass-to-bioethanol, the diverse performance of different types of yeasts and yeast strains, plusbioreactor design, growth kinetics of yeast fermentation, environmental issues, integrated usages on modern engines and motor vehicles, as well as future process development planning with some novel co-products.

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Evaluation of Fermentation Conditions by Candida tropicalis for Xylitol Production from Sago Trunk Cortex

Cited by 7 publications

References 19 publications

The isolation of pentose-assimilating yeasts and their xylose fermentation potential

The isolation of pentose-assimilating yeasts and their xylose fermentation potential

BIODEGRADACIÓN DE PLAGUICIDAS ORGANOFOSFORADOS Y ORGANOCLORADOS POR Candida tropicalis Y Stenotrophomonas maltophilia EN MICROCOSMOS DEL SUELO

A Review of Bioethanol Production from Plant-based Waste Biomass by Yeast Fermentation

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