Process optimization for aqueous extraction of reducing sugar from cashew apple bagasse: A potential, low cost substrate

Kuila, Arindam; Singh, Anshu; Mukhopadhyay, Mainak; Banerjee, Rintu

doi:10.1016/j.lwt.2010.06.005

Cited by 24 publications

(22 citation statements)

References 25 publications

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“…Juice extraction and sugar recovery increase with reduced roll gap, but tighter crushing leads to more frequent blockage in the mill. Sugar recovery has been shown to increase by shredding the stalks before crushing and by adding water during the squeezing process [8]. …”

Section: Introductionmentioning

confidence: 99%

“…We present here a water extraction method similar to that which has been used for sugar extraction from sugar beets, cashew apple bagasse, and carob [8-10]. Extraction of sugar from each agricultural source requires unique operating conditions developed based on sugar and water content, fiber structure and composition, and geometric size.…”

Section: Introductionmentioning

confidence: 99%

“…Extraction of sugar from each agricultural source requires unique operating conditions developed based on sugar and water content, fiber structure and composition, and geometric size. For example, to extract sugar from cashew apple bagasse, the optimum extraction conditions include a volume to mass ratio of liquid: solid of 1: 3.26 (mL/g), pH 6.42, extraction time of 6.3 h and a temperature of 52°C [8]. One drawback of the water extraction method is that the sugar concentration in the extraction water typically is fairly low making it difficult to meet the desired operating condition of 20 Brix (g sucrose/ 100 ml solution) for industrial scale ethanol production.…”

Section: Introductionmentioning

confidence: 99%

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Efficient extraction method to collect sugar from sweet sorghum

et al. 2013

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BackgroundSweet sorghum is a domesticated grass containing a sugar-rich juice that can be readily utilized for ethanol production. Most of the sugar is stored inside the cells of the stalk tissue and can be difficult to release, a necessary step before conventional fermentation. While this crop holds much promise as an arid land sugar source for biofuel production, a number of challenges must be overcome. One lies in the inherent labile nature of the sugars in the stalks leading to a short usable storage time. Also, collection of sugars from the sweet sorghum stalks is usually accomplished by mechanical squeezing, but generally does not collect all of the available sugars.ResultsIn this paper, we present two methods that address these challenges for utilization of sweet sorghum for biofuel production. The first method demonstrates a means to store sweet sorghum stalks in the field under semi-arid conditions. The second provides an efficient water extraction method that can collect as much of the available sugar as feasible. Operating parameters investigated include temperature, stalk size, and solid–liquid ratio that impact both the rate of sugar release and the maximal amount recovered with a goal of low water use. The most desirable conditions include 30°C, 0.6 ratio of solid to liquid (w/w), which collects 90 % of the available sugar. Variations in extraction methods did not alter the efficiency of the eventual ethanol fermentation.ConclusionsThe water extraction method has the potential to be used for sugar extraction from both fresh sweet sorghum stalks and dried ones. When combined with current sugar extraction methods, the overall ethanol production efficiency would increase compared to current field practices.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Efficient extraction method to collect sugar from sweet sorghum

et al. 2013

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“…On the other hand, in many cases, it is difficult to quickly find suitable extraction conditions for a given task. To solve the problem, various types of experimental designs have been employed, such as Plackett–Burman design 34, central composite design 35, orthogonal design 36 and Box–Behnken design 37. Lately in 2010, experimental design was adopted to optimize the DLLME conditions and then followed by nonaqueous CE procedure for the determination of fluoroquinolone antibiotics in waters 38.…”

Section: Introductionmentioning

confidence: 99%

Dispersive liquid–liquid microextraction coupled with capillary electrophoresis for simultaneous determination of sulfonamides with the aid of experimental design

Wen

Zhang

et al. 2011

Electrophoresis

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The spatial distribution of ammonia-oxidizing Betaproteobacteria (βAOB) was investigated by FISH (fluorescence in situ hybridization) and DGGE (denaturing gradient gel electrophoresis) techniques in the sediment off the Changjiang River Estuary. Sediment samples were collected from eight stations in June before the formation of hypoxia zone in 2006. The abundance of βAOB ranged from 1.87×105 to 3.53×10 5 cells/g of sediment. βAOB abundance did not present a negative correlation with salinity, whereas salinity was implicated as the primary factor affecting nitrification rates. The DGGE profiles of PCR-amplified amoA gene fragments revealed that the βAOB community structure of sample S2 separated from other samples at the level of 40% similarity. The variations in composition of βAOB were significantly correlated with the salinity, temperature, absorption ability of sediments and TOC. The statistical analysis indicates that the βAOB abundance was a main factor to influence nitrification rates with an influence ratio of 87.7% at the level of 40% biodiversity similarity. Considering the good correlation between βAOB abundance and nitrification estimates, the abundance and diversity of βAOB community could be expected as an indirect index of nitrification activity at the study sea area in summer.

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“…If the p value of lack of fit for the model is significant (p value<0.05), then other process orders would be needed to fit the data. The p values also indicate the interaction strength between each independent variable (Kuila et al 2010), besides being used to check the significance of each coefficient. The smaller the p values, the larger are the significance of the corresponding variables (Cui et al 2006).…”

Section: Discussionmentioning

confidence: 99%

Statistical optimization of fermentable sugar extraction from the Malaysian brown alga Sargassum binderi

et al. 2014

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Statistical optimisation techniques were applied in the present study to extract fermentable sugar (FS) from indigenous brown seaweed, Sargassum binderi. As identified by the Plackett-Burman design (PBD) with five variables, the most significant parameters (p<0.05) affecting sugar yield were pretreatment temperature, concentration of sulphuric acid (H 2 SO 4 ) used during pretreatment, and loading of enzyme cellulase during hydrolysis process. Upon this, the extraction of FS from S. binderi was further optimized with central composite design (CCD) by using response surface methodology (RSM). Analysis of variance revealed that every independent variable in the present study possesses significant positive effect towards the yield of FS. In addition, interactions among the independent variables were observed as well. The model proposed in this study fits significantly well to the experimental data with more than 95 % confidence. The optimal condition as proposed by the cubic model for maximum yield of FS was found as follows: pretreatment of S. binderi with 6.38 % of dilute H 2 SO 4 at 120.7°C, followed by hydrolysis using 0.16 mL of cellulase loading per unit gram of pretreated dry seaweed. The results of validation experiments gave FS yield of 1.69 g g −1 which fitted well with predicted value by RSM (1.72 g g −1 ). The overall error was small indicating the proficiency of the models in optimizing extraction of FS from S. binderi. The present study indicated that the brown seaweed S. binderi has potential to become a dependable biomass source for production of value added products.

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Process optimization for aqueous extraction of reducing sugar from cashew apple bagasse: A potential, low cost substrate

Cited by 24 publications

References 25 publications

Efficient extraction method to collect sugar from sweet sorghum

Efficient extraction method to collect sugar from sweet sorghum

Dispersive liquid–liquid microextraction coupled with capillary electrophoresis for simultaneous determination of sulfonamides with the aid of experimental design

Statistical optimization of fermentable sugar extraction from the Malaysian brown alga Sargassum binderi

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