Simultaneous saccharification and fermentation of pawpaw (Carica papaya) seeds for ethanol production

Awodi, P.S.; Nwagu, Tochukwu Nwamaka; Tivkaa, J.; Ella, Andi; Ogbonna, James C.

doi:10.1007/s42535-021-00231-z

Cited by 3 publications

(4 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The fermentation medium for ethanol production consisted of (g/100 mL): MKS, 7; glucose, 0.1; peptone, 0.2; and yeast extract, 0.2 ( Awodi et al., 2021 ). For the control samples, 7g glucose was used in place of MKS.…”

Section: Methodsmentioning

confidence: 99%

“…Aspergillus species are widely exploited in bioprocesses, given their ability to produce a cocktail of amylases for the hydrolysis of starch to simple sugars ( Nwagu and Okolo, 2011 ). The co-fermentation of starch-containing medium for ethanol production using a co-culture comprising Aspergillus species and Saccharomyces cerevisiae has been reported ( Amadi et al., 2016 ; Awodi et al., 2021 ). Given the paucity of information on the bioconversion of mango seed kernel into bioethanol, the present paper investigated bioethanol production from mango seed kernel starch using three different methods.…”

Section: Introductionmentioning

confidence: 99%

“…To reduce the production cost and promote eco-friendliness, the production of value-added products such as bioethanol from agro-industrial wastes is currently of great interest. Adopting wastes as a renewable feedstock for bioprocesses reduces environmental pollution, energy production and revenue generation ( Amadi et al., 2020 , 2021 ; Awodi et al., 2021 ; Onwuakor et al., 2017 ).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Bioconversion of mango (Mangifera indica) seed kernel starch into bioethanol using various fermentation techniques

Awodi

Ogbonna

Nwagu

2022

Heliyon

View full text Add to dashboard Cite

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Bioconversion of mango (Mangifera indica) seed kernel starch into bioethanol using various fermentation techniques

Awodi

Ogbonna

Nwagu

2022

Heliyon

View full text Add to dashboard Cite

“…In recent years bioconversion of plant biomass such as water melon peels, cassava peels, mango seeds (Awodi et al, 2022), pawpaw seeds (Awodi et al, 2021) and pawpaw peels to bioethanol have received tremendous support from researchers (Bashir et al, 2021). The biofuel industries convert the starches into bioethanol by a batch fermentation process (Nugales et al, 2012), which comprises of three steps: (i) liquefaction of starch by starch hydrolyzing amylase to reduce viscosity of the starch (ii) saccharification process whereby the liquefied starch is hydrolyzed into fermentable sugar using glucoamylase, (iii) the fermentable sugar (glucose) is fermented into bioethanol by saccharomyces cerevisiae stains.…”

mentioning

confidence: 99%

Comparative Evaluation of Unpeeled Cassava (Manihot esculenta) and Tacca (Tacca involucrata) Tuber Flours as Substrates for Bioethanol Production

Awodi,

Ujoh,

Adikwu

et al. 2023

USci

View full text Add to dashboard Cite

The ever-increasing demand for alternatives to fossil fuel due to its negative impacts on the environment and high prices have resulted in the search for feedstock for bioethanol production. Cassava is one of the major staple foods that is processed into various preservative forms in Nigeria, while tacca is a plant growing in the wild and is eaten by a few people during scarcity of food. Unpeeled cassava and tacca tubers were processed into flour. The flour was hydrolyzed using Aspergillus niger and Saccharomyces cerevisiae, separately. The bioethanol potentials of tuber flours were evaluated using a single-step process. Hydrolysis of 10g of cassava tuber flour separately by Aspergillus niger and Saccharomyces cerevisiae produced (g/100mL) 0.720 and 0.765 of sugar, respectively, while hydrolysis of 10g of tacca tuber flour separately by Aspergillus niger and Saccharomyces cerevisiae produced (g/100mL) 0.392 and 0.367 of sugar respectively. Evaluation of the effect of time during hydrolysis of cassava tuber flour for 24h by Aspergillus niger and Saccharomyces cerevisiae separately produced (g/100mL) 1.44 and 0.737 of sugar, while hydrolysis of tacca tuber flour for 24h produced (g/100mL) 0.768 and 0.493 of sugar. Evaluation of the effect of varying pH values during hydrolysis of the tuber flours revealed that pH 5.6 produced the highest concentration of sugar (0.240g/100mL) and (0.803g/100mL) when Aspergillus niger and Saccharomyces cerevisiae were separately used to hydrolyze cassava tuber flour. When Aspergillus niger and Saccharomyces cerevisiae were separately used to hydrolyze tacca tuber flour at pH 5.6, 0.626g and 0.436g of sugar was produced. Fermentation of cassava tuber flour by mixed culture of Aspergillus niger and Saccharomyces cerevisiae for 48h produced 3.851%(w/v) bioethanol at 24h of fermentation, while fermentation of tacca tuber flour by mixed culture of Aspergillus niger and Saccharomyces cerevisiae produced 3.236% (w/v) bioethanol at 48h. Cassava tuber flour produced a higher concentration of bioethanol than tacca tuber flour. These results have shown that tacca tuber is a potential feedstock for bioethanol production, hence exploitation of nonfood materials such as tacca tuber for bioprocesses can reduce the over _dependence on cassava tuber.

show abstract

Plant growth promoting potentials of forest fungi

Eze,

Nwagu,

Okechukwu

et al. 2025

Forest Fungi

View full text Add to dashboard Cite

Simultaneous saccharification and fermentation of pawpaw (Carica papaya) seeds for ethanol production

Cited by 3 publications

References 25 publications

Bioconversion of mango (Mangifera indica) seed kernel starch into bioethanol using various fermentation techniques

Bioconversion of mango (Mangifera indica) seed kernel starch into bioethanol using various fermentation techniques

Comparative Evaluation of Unpeeled Cassava (Manihot esculenta) and Tacca (Tacca involucrata) Tuber Flours as Substrates for Bioethanol Production

Plant growth promoting potentials of forest fungi

Contact Info

Product

Resources

About