Enhanced ethanol production from Kinnow mandarin (Citrus reticulata) waste via a statistically optimized simultaneous saccharification and fermentation process

Oberoi, Harinder Singh; Vadlani, Praveen V.; Nanjundaswamy, A. M.; Bansal, Sunil; Singh, Sandeep; Kaur, Simranjeet; Babbar, Neha

doi:10.1016/j.biortech.2010.08.111

Cited by 99 publications

(30 citation statements)

References 32 publications

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“…Since utilization of wastes via fermentation offers a low-cost alternative for bio-ethanol production, it is important to assess the potential of alternative sources of biomass as substrate. Numerous studies have been conducted on waste products such as empty fruit bunches from oil palm [2][3][4], fruit wastes [5][6][7][8][9][10] and food waste [11][12]. Ethanol yields have been reported as dependent on substrate; carob pod extract yielded 24.51 g L -1 of ethanol, while Kinnow mandarin yielded 42 g L -1 [9,13].…”

Section: Applied Environmental Researchmentioning

confidence: 99%

Utilization of Fruit Waste for Bioethanol Production by Co-cultures of Aspergillus niger and Saccharomyces cerevisiae

Chamchoi

2019

App. Envi. Res.

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The purpose of this research was to study the effectiveness of simultaneous fermentation offruit waste with co-cultures of Aspergillus niger TISTR 3063 and Saccharomyces cerevisiaeTISTR 5606 in production of ethanol. The effect of fermentation temperature on ethanol yield was also observed. Pomelo and banana peels were selected as substrates and prepared by chopping into small rectangular pieces. Fermentation of batches of fruit waste was carriedout using a 250mL Erlenmeyer flask with glucose as a control. Analysis of the composition of the fruit waste included sugar, pH, TS, VS, ash, moisture, COD and TKN. From the results, it was found that maximum yields of 90.71% and 104.90% for pomelo and banana peel, respectively, were achieved at a temperature of 40°C within 24 h. The analysis also showed that fermentation temperature affected ethanol yield. When the fermentation temperature was raised from 30°C to 40°C, maximum ethanol yield from pomelo peel fermentation with10% of inoculum was increased from 73.86% to 90.71%, significant at p-0.05 Maximum yield from banana peel fermentation showed a similar trend. This study establishes the potential for upgrading fruit wastes such as pomelo and banana peels as high value substrates for ethanol production. Pomelo peel in particular shows high potential as a substrate for ethanol fermentation at 40°C for 24 h, with inoculum of 10% (w/w) of each fungus and yeast.

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Section: Applied Environmental Researchmentioning

confidence: 99%

Utilization of Fruit Waste for Bioethanol Production by Co-cultures of Aspergillus niger and Saccharomyces cerevisiae

Chamchoi

2019

App. Envi. Res.

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“…It can be utilized directly for the production of hydrolytic enzymes [3][4][5][6][7][8]. The insoluble polysaccharides of OP such as cellulose, hemicelluloses and pectin can be degraded to sugars by pretreatments and enzymatic hydrolysis, and used for the production of value-added products such as ethanol and various enzymes [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Utilization of orange peel, a food industrial waste, in the production of exo-polygalacturonase by pellet forming Aspergillus sojae

Büyükkileci

Lahore

Tarı

2014

Bioprocess Biosyst Eng

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The production of exo-polygalacturonase (exo-PG) from orange peel (OP), a food industrial waste, using Aspergillus sojae was studied in submerged culture. A simple, low-cost, industrially significant medium formulation, composed of only OP and (NH 4 ) 2 SO 4 (AS) was developed. At an inoculum size of 2.8 9 10 3 spores/mL, growth was in the form of pellets, which provided better mixing of the culture broth and higher exo-PG activity. These pellets were successfully used as an inoculum for bioreactors and 173.0 U/mL exo-PG was produced. Fed-batch cultivation further enhanced the exo-PG activity to 244.0 U/mL in 127.5 h. The final morphology in the form of pellets is significant to industrial fermentation easing the subsequent downstream processing. Furthermore, the low pH trend obtained during this fermentation serves an advantage to fungal fermentations prone to contamination problems. As a result, an economical exo-PG production process was defined utilizing a food industrial byproduct and producing high amount of enzyme.

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“…Fortunately, early studies indicated that pectinase pretreatment has been used for improving ethanol production from various feedstocks [25,26]. Compared with physical or thermo-chemical processes, pectinase treatment requires less energy and produces no inhibitory factors, and the treatment conditions are environmentally friendly, making the process much economical and easy to perform [27].…”

Section: Introductionmentioning

confidence: 99%

Improving Production of Bioethanol from Duckweed (Landoltia punctata) by Pectinase Pretreatment

et al. 2012

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Landoltia punctata, a widely distributed duckweed strain with the ability to accumulate starch, was used as a novel feedstock for bioethanol production by Saccharomyces cerevisiae. To improve ethanol production, pectinase pretreatment was used to release much more glucose from L. punctata mash and the pretreatment conditions (enzyme loading, temperature and pretreatment time) for the duckweed were optimized by using a surface response design. The results showed that maximum glucose yield was 218.64 ± 3.10 mg/g dry matter, which is a 142% increase compared to the untreated mash, with a pectinase dose of 26.54 pectin transeliminase unit/g mash at 45 °C for 300 min. Pectinase pretreatment apparently changed the ultrastructure of L. punctata, as evidenced by scanning electron microscopy analysis. Further fermentation experiments were performed and 30.8 ± 0.8 g/L of ethanol concentration, 90.04% of fermentation efficiency and 2.20 g/L / h of productivity rate were achieved. This is the highest ethanol concentration reported to date using duckweed as the feedstock.

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Enhanced ethanol production from Kinnow mandarin (Citrus reticulata) waste via a statistically optimized simultaneous saccharification and fermentation process

Cited by 99 publications

References 32 publications

Utilization of Fruit Waste for Bioethanol Production by Co-cultures of Aspergillus niger and Saccharomyces cerevisiae

Utilization of Fruit Waste for Bioethanol Production by Co-cultures of Aspergillus niger and Saccharomyces cerevisiae

Utilization of orange peel, a food industrial waste, in the production of exo-polygalacturonase by pellet forming Aspergillus sojae

Improving Production of Bioethanol from Duckweed (Landoltia punctata) by Pectinase Pretreatment

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