Fermentation of pineapple fruit peel wastes for bioethanol production

Casabar, Jennifer T.; Unpaprom, Yuwalee; Ramaraj, Rameshprabu

doi:10.1007/s13399-019-00436-y

Cited by 101 publications

(26 citation statements)

References 26 publications

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“…Lower DP indicates that no further pretreatment or hydrolysis is needed to convert the complex sugars into reducing sugar 45 . However, 4 to 25 DP was high as compared to other existing studies and therefore enzymatic hydrolysis was next performed 45,46 …”

Section: Resultsmentioning

confidence: 99%

“…The calculation DP was based on the study of Casabar et al 45 whereas it represents the number of monomeric sugars in the macromolecule. Lower DP indicates that no further pretreatment or hydrolysis is needed to convert the complex sugars into reducing sugar 45 . However, 4 to 25 DP was high as compared to other existing studies and therefore enzymatic hydrolysis was next performed 45,46 …”

Section: Resultsmentioning

confidence: 99%

“…43,44 Likewise, although sugar yield was improved, the degree of polymerization (DP) calculated in postalkaline pretreatment is high, ranging from 4 to 25. The calculation DP was based on the study of Casabar et al 45 whereas it represents the number of monomeric sugars in the macromolecule. Lower DP indicates that no further pretreatment or hydrolysis is needed to convert the complex sugars into reducing sugar.…”

Section: Postalkaline Treatmentmentioning

confidence: 99%

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Bioethanol production from coconut pulp residue using hydrothermal and postalkaline pretreatment

et al. 2020

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The objective of this study is to explore the feasibility of sequential hydrothermal and alkaline pretreatment in improving enzymatic hydrolysis and sugar production of coconut pulp residue for bioethanol production. Hydrothermal pretreatment with the different heating duration of 20, 40, 60 minutes yielded 32.27, 27.51, and 26.72 g/L of total sugar, respectively. After posttreatment with 1%, 2%, and 3% alkaline treatment, the further increment of almost 90% on sugar production was observed. Compared to the single pretreatment, the combination of hydrothermal and alkaline pretreatment significantly affected the enzymatic hydrolysis. The optimum condition for efficient hydrolysis was 40 minutes hydrothermal pretreatment, followed by 1% NaOH posttreatment. At these conditions, the total and reducing sugar was 257.14 ± 0.92 and 102.86 ± 0.82 g/L and the maximum ethanol achieved was 27.19 g/L on the 48 hours of fermentation with efficiency and ethanol productivity of 51.83% and 0.57 g/L/h, respectively.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Postalkaline Treatmentmentioning

confidence: 99%

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Bioethanol production from coconut pulp residue using hydrothermal and postalkaline pretreatment

et al. 2020

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“…Innovative extraction techniques such as ultrasound-assisted extraction of phytocompounds could be employed (as was done in dragon fruit peels) (Bhagya Raj and Dash, 2020). On a larger and industrial scale, biofuels, i.e., bioethanol could be produced from organic materials containing carbohydrates and have high sugar contents as well as from the lignocellosic material (consisting of lignin, hemicellulose and cellulose) using saccharification and fermentation by enzymes simultaneously (Casabar et al, 2019) as was done for pineapple peels.…”

Section: Introductionmentioning

confidence: 99%

Antioxidant Content, Capacity and Retention in Fresh and Processed Cactus Pear (Opuntia ficus-indica and O. robusta) Fruit Peels From Different Fruit-Colored Cultivars

Wit

Toit

Osthoff

et al. 2020

Front. Sustain. Food Syst.

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During processing, the peels and seeds from cactus pear fruits are usually discarded. These "waste" products contain valuable bioactive compounds. This study investigated the antioxidant content and antioxidant potential of fresh and processed (juiced, dried, preserved, and chutney) cactus pear fruit peels from different fruit-colored cactus pear cultivars. Cactus pear peels contained high levels of antioxidants and demonstrated high antioxidant activity. The highest contents were found in dried peels, while the preserves had the lowest contents. Products on the positive side of Factor 1 of the PCA plot are mostly associated with the antioxidants PCA analysis showed that products, rather than cultivars, seem to cluster together, e.g., juices and fresh peels, chutneys, preserves and dried peels. Robusta and its products cluster together, as well as with betalains. The % DPPH, carotenoids and phenolics are grouped together, with % chelating activity closely correlated with ascorbic acid. Dried products from all cultivars correlated closely with % DPPH, carotenoids and phenolics, especially dried peel from Gymno-Carpo (orange), Ofer (orange), Meyers (red), and Nepgen (green). Red and orange preserves formed a cluster, while green preserves and chutney from all cultivars clustered together, as did fresh peels and juices. Purple fruit peel products had the highest % DPPH, % chelating activity, betalains, phenolic compounds and carotenes. Ascorbic acid dominated in orange and red fruit peels. Purple and orange were the colors of cactus pear fruit cultivars that might be the best choice in terms of antioxidant content. The cultivar that presented the best fruit peel from an antioxidant point of view for preservation was Robusta. Cactus pear fruit peels should be included in processed products such as juice, dried fruit and chutneys. These processed products are multi-component food ingredients and are therefore multi-component nutraceuticals which retained their antioxidant properties.

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“…It can be produced from different types of agricultural renewable materials such as sunflower stalk, sorghum stalk, sugarcane leaf and con stalk in a fiber part (Manmai et al, 2017c;Manmai et al, 2018a;Manmai et al, 2018b) and for weedy feedstocks are gooseweed and smallflowered nutsedge (Vu PT et al, 2017;Vu et al, 2018;Ramaraj and Unpaprom 2019a;Ramaraj and Unpaprom, 2019b) . In the same direction corn stalk juice and pineapple fruit peel wastes used for ethanol producing (Bautista et al, 2019;Casabar et al, 2019). The major benefits of biofuels are presented in (Balat, 2011).…”

Section: Introductionmentioning

confidence: 99%

Influential degree of polymerization of sugar extraction on alkali pretreatment from sunflower stalk wastes by applied statistical modelling

Manmai

Saetang

Unpaprom

et al. 2019

Maejo Int. J. Energ. Environ. Comm. or MIJEEC

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This paper presents application of influence of degree of polymerization (DP) on optimally pretreated using a response surface methodology (RSM) approach for decreased DP level of optimal chemical and biological pretreatments from sunflower stalk. All experiments in this paper are applied by statistical designs for developing a statistic multifunction analysis model that focus on the effect of dissimilar factors for describing of the optimum values of the changed surface response on any variables. The process parameters of chemical model (Sodium Hydroxide concentration and Time) to pretreat for DP. The chemical pretreatment model was certified by 13 runs, at two factors, NaOH (1, 1.5, 2%) and Day (1, 2, 3) by central composite design (CCD). DP value of the chemical model was estimated by a Design Expert program version 11 trial: chemical model of DP highest and lowest of 25.80 and 6.16, consecutively. The aim of this experiments to investigate only DP from the chemical model of pretreatment. The procedure there are effective on sugar conversion and DP of the lignocellulosic biomass. Which pretreatment is a challenge for cost and competitive technology on large-scale of fermentable sugar in the step of hydrolysis.

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Fermentation of pineapple fruit peel wastes for bioethanol production

Cited by 101 publications

References 26 publications

Bioethanol production from coconut pulp residue using hydrothermal and postalkaline pretreatment

Bioethanol production from coconut pulp residue using hydrothermal and postalkaline pretreatment

Antioxidant Content, Capacity and Retention in Fresh and Processed Cactus Pear (Opuntia ficus-indica and O. robusta) Fruit Peels From Different Fruit-Colored Cultivars

Influential degree of polymerization of sugar extraction on alkali pretreatment from sunflower stalk wastes by applied statistical modelling

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