Valorisation of orange peel: supplement in fermentation media for ethanol production and source of limonene

Jha, Pamela; Singh, Surabhi; Raghuram, Madathil; Nair, G. Achuthan; Jobby, Renitta; Gupta, Anand S.; Desai, Nitin

doi:10.1007/s42398-019-00048-2

Cited by 21 publications

(7 citation statements)

References 23 publications

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“…Conversely, we observed a significant difference in the total sugar content of the peel between the two cultivars. This part of the fruit can therefore be exploited to manufacture other products or used as a carbon source to produce ethanol (Jha et al, 2019). Moreover, the protein content in the peel of the two cultivars is close to that reported by Ashraf et al (2011).…”

Section: Resultssupporting

confidence: 83%

Morphological and chemical characteristics of fruits and seeds of two cultivars of Opuntia ficus-indica (L.) Miller from northern Morocco

Bougdaoua

Mtili

2022

J PROF ASSOC CACTUS

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Fruits of two cultivars of Opuntia ficus-indica (the “Hajria” and “Dellahia” cultivars) growing in the Tetouan and Al-Hoceima provinces of northern Morocco were harvested at the same ripening stage. The chemical properties (total lipids, proteins, total sugars, moisture, and dry matter) of the peel and seeds were determined and the morphological characteristics (whole fruit weight, pulp weight, peel weight, and the number and weight of fertilized and aborted seeds) of the fruits and their seeds from both cultivars were compared. Surface-sterilized seeds were separated into six groups according to their length and germinated on Murashige and Skoog basal culture medium. Seed viability, by analyzing the correlation between (1) germination rate and seed length, and (2) germination rate and seed weight was determined. Results showed that the province or cultivar factor had significant effects on the morphological characteristics of fruits and seeds. Fruit and pulp weights were positively correlated with the seed number. In addition, a marked difference in the sugar content of the peel was observed (57.29% in the ‘‘Dellahia’’ cultivar compared to 36.66% in the “Hajria” cultivar). The seeds of the “Dellahia” cultivar contained 10.41% fat and 8.12% protein, whereas the seeds of “Hajria” contained 12.27% fat and 8.67% protein. Seed viability was assured from a length of 3.5 mm in both cultivars. The seed germination rate correlated positively with increased length and weight; however, this rate was significantly different between the two cultivars.

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Section: Resultssupporting

confidence: 83%

Morphological and chemical characteristics of fruits and seeds of two cultivars of Opuntia ficus-indica (L.) Miller from northern Morocco

Bougdaoua

Mtili

2022

J PROF ASSOC CACTUS

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“…However, despite the high ethanol titer achieved, it should be noted that the amount of available sugar could have rendered an even higher amount of the final product. The same holds for the results found by Jha et al (2019), whose fermentations did not allow more than 50% of the sugar available to be consumed, and by Vadalà et al (2023), who observed that ~14% of citrus-waste hydrolysate sugar content was not consumed by yeast cells. This incomplete sugar conversion is probably due to the incapacity of S. cerevisiae to ferment many of the orange biomasses' sugars.…”

Section: Bioethanol Productionsupporting

confidence: 82%

Transforming orange waste with yeasts: bioprocess prospects

Minussi,

Santos,

Scapini

et al. 2024

Rev. Bras. Ciênc. Ambient.

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It is mandatory to make the circular economy a reality, developing ways of transforming waste into valuable products. In this context, investigating the biotechnological potential of different residues is most welcome. This review analyzes how orange waste can be used as biorefinery feedstock to produce different bioproducts using yeasts as the major biocatalysts. In addition to the current orange market, its pectin-rich biomass is described in detail, aiming to elucidate how yeast cells can convert it into ethanol, xylitol, polyphenols, and organic acids (some of them, volatile compounds). Genetic, metabolic, and evolutionary engineering are also analyzed as biotechnological tools to improve the existing processes. Finally, this review also addresses the potential employment of fruit-dwelling yeasts in biorefining pectin-rich biomasses such as orange wastes. All the data presented herein lead to the conclusion that these residues could already be used for noble purposes.

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“…The physical and chemical pretreatments performed on beet and date materials were required to reduce recalcitrance biomass for hydrolyzing complex sugars (mainly sucrose) into simple intermediate products and increase the reactive surface area [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. A comparison of the yield and concentration of ethanol of all fermentation processes is presented in Table 3.…”

Section: Bioethanol Yield and Concentrationmentioning

confidence: 99%

“…These by-products can be valorized in order to produce bioethanol which can be used as alone or can be blended with gasoline as transportation fuels [5][6][7]. Bioethanol can be produced through fermentation of any raw materials as long as it contains sugar [8,9]. Vegetables and fruits are very rich in carbohydrates.…”

Section: Introductionmentioning

confidence: 99%

An effective acid pretreatment of agricultural biomass residues for the production of second-generation bioethanol

et al. 2019

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Currently, the potential for energy recovery of plant biomass by biotechnological processes is a preferred solution for the use of agricultural products of low commercial value in order to produce bioenergy that is alternative to fossil fuels. The objective of this study was to obtain second-generation bioethanol by valorization of sugar beet and common dates of low quality. This involved separate hydrolysis and anaerobic fermentation process using the yeast strain Saccharomyces cerevisiae. Physicochemical and biochemical analyzes were carried out on beet and date substrates before and after alcoholic fermentation to determine their effect on yeast activity. The results showed that palm date was a good substrate for the microorganisms in contrast to sugar beet which required a high pretreatment in order to hydrolyze sucrose into fermentable sugars. After distillation, it was possible to recover bioethanol with a quality and a concentration depending on the substrate nature. For an initial sugar concentration of 12.0 °Brix, 74.7 g/kg DM of bioethanol (92.4 g/L) was produced by Saccharomyces from date syrup. In the presence of concentrated date syrup (22.2 °Brix), a lower efficiency of ethanol production was observed (78.2 g/L). It can be conclude that the diluted date substrate led to a good quality bioethanol with a high production yield. Statement of noveltyIn this project, we tried to valorize agricultural residues (Algerian sugar beet and palm date of low quality) for the production of bioethanol which can substitute fossil energies. Algeria is considered as one of the major producers and exporters of palm dates in the world, and thousands of tons of dates remain unused. Thus, these agricultural by-products could be recovered instead of being released into the environment by polluting it. In order to produce bioethanol, an effective pretreatment and optimal fermentation conditions were used. This project is part of a strategy to increase the feedstock exploitation and decrease the residues while producing clean and renewable energy.* Nabila Khellaf, khellafdaas@yahoo.fr |

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Valorisation of orange peel: supplement in fermentation media for ethanol production and source of limonene

Cited by 21 publications

References 23 publications

Morphological and chemical characteristics of fruits and seeds of two cultivars of Opuntia ficus-indica (L.) Miller from northern Morocco

Morphological and chemical characteristics of fruits and seeds of two cultivars of Opuntia ficus-indica (L.) Miller from northern Morocco

Transforming orange waste with yeasts: bioprocess prospects

An effective acid pretreatment of agricultural biomass residues for the production of second-generation bioethanol

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