Optimization of [Amim]Cl Pretreatment Conditions for Maximum Glucose Recovery from Hybrid Pennisetum by Response Surface Methodology

Wang, Shengdan; You, Tingting; Xu, Feng; Chen, Jiachuan; Yang, Guihua

doi:10.15376/biores.10.4.7021-7037

Cited by 10 publications

(4 citation statements)

References 31 publications

(47 reference statements)

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“…Experimental Design (ED) is an effective statistical approach to investigate and to optimize multivariate processes. To date, many types of LCB have been pretreated by RTILs and optimized by Response Surface Methodology (RSM) (Bajaj and Wani, 2011; Fu and Mazza, 2011b; Tan et al, 2011; Yoon et al, 2012; Lee et al, 2013; Sidik et al, 2013; Qiu et al, 2014; Singh et al, 2015; Wang et al, 2015; Li et al, 2017; Saha et al, 2017; Oliveira Ribeiro et al, 2018; Trinh et al, 2018). Only very few research groups have investigated the optimum conditions for RTIL-based pretreatment using another statistical design (Elgharbawy et al, 2017; Papa et al, 2017; Vergara et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Wheat Bran Pretreatment by Room Temperature Ionic Liquid-Water Mixture: Optimization of Process Conditions by PLS-Surface Response Design

et al. 2019

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Room Temperature Ionic Liquids (RTILs) pretreatment are well-recognized to improve the enzymatic production of platform molecules such as sugar monomers from lignocellulosic biomass (LCB). The conditions for implementing this key step requires henceforth optimization to reach a satisfactory compromise between energy saving, required RTIL amount and hydrolysis yields. Wheat bran (WB) and destarched wheat bran (DWB), which constitute relevant sugar-rich feedstocks were selected for this present study. Pretreatments of these two distinct biomasses with various 1-ethyl-3-methylimidazolium acetate ([C2mim][OAc])-water mixtures prior to hydrolysis catalyzed by hemicellulolytic cocktail (Cellic CTec2) were finely investigated. The main operating conditions such as pretreatment temperature (25–150°C), time (40–180 min), WB and DWB loading (2–5% w/v) and concentration of [C2mim][OAc] in water [10–100% (v/v)] were screened through glucose and xylose yields and then optimized through a Partial Least Square (PLS)—Second Order Design. In an innovative way, the PLS results showed that the four factors and their interactions could be well-fitted by a second-order model ( p < 0.05). The quadratic PLS models were used to predict optimal pretreatment conditions. Thus, maximum glucose (83%) and xylose (95%) yields were obtained from enzymatic hydrolysis of WB pretreated at 150°C for 40 min with 10% of [C2mim][OAc] in water and 5% of WB loading. For DWB, maximum glucose (100%) and xylose (57%) yields were achieved for pretreatment temperatures of 150°C and 25°C, respectively. The required duration was still 40 min, with 20% of [C2mim][OAc] in water and a 5% DWB loading. Then, Multiple Response Optimization (MRO) performed by Nelder-Mead Simplex Method displayed sugar yields similar to those obtained by individual PLS optimization. This complete statistical study confirmed that the established models were appropriate to predict the sugar yields achieved after different pretreatment conditions from WB and DWB biomasses. Finally, Scanning Electron microscopy (SEM) studies allowed us to establish clearer link between structural changes induced by pretreatment and the best enzymatic performances obtained.

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Section: Introductionmentioning

confidence: 99%

Wheat Bran Pretreatment by Room Temperature Ionic Liquid-Water Mixture: Optimization of Process Conditions by PLS-Surface Response Design

et al. 2019

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“…Generally. it is stated that R 2 higher than 0.90 is considered as the indication of the model high correlation 12 . The p-values of the parameters studies were mostly less than 0.01 .…”

Section: Resultsmentioning

confidence: 99%

Response Surface Methodology of Pressurized Liquid Water Extraction of Curcumin From Curcuma Domestica Val

Yulianto¹,

Paramita²,

Hartati³

et al. 2018

RJC

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Curcumin, an active compounds found in Curcuma domestica Val, exhibits many pharmacological effects. Due to its numerous benefits, pressurized liquid water extraction is gaining many interests from researchers. Response Surface Methodology applied in the optimization study of the pressurized liquid water extraction of curcumin from Curcuma domestica Val. Central Composite Design was applied in the design of this research. The parameter process studied were temperature (130-150 0 C), time (20-40 minutes) and reaction volume (4-6.2 L). The solid-liquid ratio was fixed at a ratio of 1:10, ad the pressure was fixed of 2 bar. Response surface of the pressurized liquid water extraction of curcumin was expressed by a second-order polynomial. The research showed that the model we adequate to predict the pressurized liquid water extraction of curcumin in the range of variables studied in this research. The research showed that temperature was the most influencing variable for pressurized liquid water extraction of curcumin from Curcuma domestica Val. The optimal value of the pressurized liquid water extraction of curcumin was obtained by solving the second-order polynomial regression equation. The curcumin pressurized liquid water extraction was optimum at an extraction temperature of 156.81 0 , extraction time of 46.81 minutes and solvent volume of 6.95L.

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“…As shown in Table 2, the model had a coefficient of variation below 10%, an R 2 (or called the coefficient of determination) and adjusted R 2 over 0.9, and an adequate precision (or called the signal/noise ratio) over 4. Therefore, the model should be acceptable, according to available reports on the response surface methodology study (Wang et al 2015b). Using the model, the optimum levels of hot-pressing temperature, hot-pressing duration, and adhesive dosage for preparing composites were determined and validated, which were 183 °C, 74 s/mm, and 312.5 g/m 2 , respectively (see experiment No.…”

Section: Model Development Of the Response Surface Methodology Studymentioning

confidence: 99%

Preparation and properties of new plywood composites made from surface modified veneers and polyvinyl chloride films

Song

Wei

Wang

et al. 2017

BioRes

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To reduce the formaldehyde emissions of plywood used in furniture and interior decorations, new plywood composites made from surface modified veneers and polyvinyl chloride films were developed. These films were used as formaldehyde-free adhesives, and the veneer surfaces were modified with 3-aminopropyl(triethoxy)silane to enhance the compatibility with the films. Hot-pressing of composites was optimized using a response surface methodology. The effects of 3-aminopropyl(triethoxy)silane modification on various properties of veneers and composites were studied by Fourier transform infrared spectroscopy, contact angle, physico-mechanical, scanning electron microscope, dynamic mechanical, and thermogravimetric analyses. The optimum hot-pressing process for the composites was 183 °C (temperature), 74 s/mm (duration), and 312.5 g/m2 (adhesive). The modification with 3-aminopropyl(triethoxy)silane enhanced the hydrophobicity of veneer surfaces and improved the interfacial adhesion and physico-mechanical properties of composites. Adding 3% 3-aminopropyl(triethoxy)silane resulted in approximately 40% of decrease in water adsorption of composites and 30% increase in wet shear strength. The 3-aminopropyl(triethoxy)silane modification also improved the thermal stability of composites. The physico-mechanical properties of both the unmodified and modified composites met the requirements in Chinese national standard GB/T 9846 (2015) for the water-resistant plywood, indicating the potential of proposed composites as new building materials.

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Optimization of [Amim]Cl Pretreatment Conditions for Maximum Glucose Recovery from Hybrid Pennisetum by Response Surface Methodology

Cited by 10 publications

References 31 publications

Wheat Bran Pretreatment by Room Temperature Ionic Liquid-Water Mixture: Optimization of Process Conditions by PLS-Surface Response Design

Wheat Bran Pretreatment by Room Temperature Ionic Liquid-Water Mixture: Optimization of Process Conditions by PLS-Surface Response Design

Response Surface Methodology of Pressurized Liquid Water Extraction of Curcumin From Curcuma Domestica Val

Preparation and properties of new plywood composites made from surface modified veneers and polyvinyl chloride films

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