Acid hydrolysis of Curcuma longa residue for ethanol and lactic acid fermentation

Nguyen, Cuong Mai; Nguyen, Thanh Ngoc; Choi, Gyung Ja; Choi, Yong Ho; Jang, Kyoung Soo; Park, Youn‐Il; Kim, Jin-Cheol

doi:10.1016/j.biortech.2013.10.039

Cited by 30 publications

(9 citation statements)

References 31 publications

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“…Figure also shows that although monosaccharide yield and concentration of 5 min holding time was slightly higher than 1 min holding time, the increase was mainly from glucuronic acid, which is not available for ethanol fermentation with currently available methodology . Thus, 1 min holding time was chosen for the hydrolysis process, which is much shorter than literature using conventional heating for hours. ,,,,− …”

Section: Results and Discussionmentioning

confidence: 94%

“…In addition, the monosaccharide yield increased with holding time when acid concentration was lower than 0.2 M; however, it began to decrease with longer holding time when acid concentration was 0.2−0.4 M. This indicated that high acid concentration with longer reaction time would result in degradation of sugars and formation of byproduct, which has also been reported by other researchers. 33,34 The optimal acid concentration for higher monosaccharide yield was 0.4 M, 5 min, 136 mg/g seaweed of monosaccharides. 0.4 M H 2 SO 4 was also reported in the literature as the optimal concentration for hydrolyzing seaweed biomass.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Microwave Assisted Acid Hydrolysis of Brown Seaweed Ascophyllum nodosum for Bioethanol Production and Characterization of Alga Residue

Yuan

Macquarrie

2015

ACS Sustainable Chem. Eng.

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Brown&seaweed& Ascophyllum+nodosum++ Fastµwave&assisted& hydrothermal&treatment Sugars Biochar Fermenta7on Ethanol ABSTRACT. For the first time, brown seaweed Ascophyllum nodosum was studied as a feedstock for the production of bioethanol. Saccharification was carried out by microwave assisted acid hydrolysis. The optimal condition was 0.4 M H 2 SO 4 , 3.13% (w/v) of biomass concentration, reaction temperature at 150 o C for 1 min, resulting in 127 mg/g monosaccharides of seaweed being released. The hydrolysates solution was concentrated and fermented directly without further detoxification. The concentration of furfural, hydroxymethyfufural and phenolicin the fermentation medium were 0.00 g/L, 0.01 g/L and 1.8 g/L, respectively. An ethanol concentration of 5.57 g/L and a conversion efficiency of 60.7% (based on glucose, galactose and mannose) were achieved. More than 50% energy yield of alga residue was recovered after hydrolysis, and the energy densification ranged from 1.4 to 1.7, with HHVs from about 19 -24 MJ/kg. The findings of this study demonstrated that microwave heating is a fast and efficient way to produce sugars and biochar in one simple process. And Ascophyllum nodosum can be potentially used as a feedstock for bioethanol and biochar production.

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Section: Results and Discussionmentioning

confidence: 94%

Section: ■ Results and Discussionmentioning

confidence: 99%

Microwave Assisted Acid Hydrolysis of Brown Seaweed Ascophyllum nodosum for Bioethanol Production and Characterization of Alga Residue

Yuan

Macquarrie

2015

ACS Sustainable Chem. Eng.

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“…Although these preliminary utilizations can consume lots of IIR, the value of these products is cheap and, thus, cannot evoke the enthusiasm of disposal enterprises. Some researchers prepared fermentable sugars from traditional Chinese herb residues and then utilized them to produce high-value products, such as fuel ethanol [ 14 ], succinic acid [ 15 ], lactic acid [ 16 ], polysaccharide [ 17 ], xylitol [ 18 ], cellulase [ 19 ], gellan gum [ 20 ], and so on. However, the existence of some bioactive substances and medicine residues in these fermentable sugars is a limiting factor for further application.…”

Section: Introductionmentioning

confidence: 99%

Characterization of isolated starch from Isatis indigotica Fort. root and anhydro-sugars preparation using its decoction residues

Gao

Lin

et al. 2023

Biomass Conv. Bioref.

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Isatis indigotica Fort. root (Ban-lan-gen, IIR), a traditional Chinese medicine (TCM), has an ancient and well-documented history for its medicinal properties. Aside from epigoitrin, indole alkaloids, and their corresponding derivatives as medicinal ingredients, it also contains lots of biomass such as starch. Herein, a new starch was isolated from IIR and the physicochemical properties such as amylose content, moisture content, ash content, morphology, thermal properties, and crystallography were characterized systematically. The amylose content of IIR starch was 19.84 ± 0.85%, and the size and shape of starch granules is ellipsoidal shape with sizes from 2 to 10 μm. IIR starch exhibited a C-type pattern and had 25.92% crystallinity (higher than that of corn starch). The gelatinization temperature of IIR starch was 58.68–75.41 °C, and its gelatinization enthalpy was Δ H gel = 4.33 J/g. After decocting, the IIR’s residues can be used to prepare anhydro-sugars in a polar aprotic solvent. The total carbon yield of levoglucosan (LG), levoglucosenone (LGO), 5-hydroxymethylfurfural (HMF), and furfural (FF) could reach 69.81% from IIR’s decoction residues in 1,4-dioxane with 15 mM H 2 SO 4 as the catalyst. Further, the residues after dehydration were prepared into biochar by thermochemical conversion and the BET surface area of biochar was 1749.46 m 2 /g which has good application prospect in soil improvement and alleviates obstacles of IIR continuous cropping.

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“…Curcuminoids are the major secondary metabolites in turmeric and are composed of 2% to 8% of turmeric materials. They are commonly used as natural food coloring in various parts of the world (Nguyen and others ). As a functional food additive, curcuminoids demonstrated a remarkable variety of beneficial pharmacological activities (Tomren and others ).…”

Section: Introductionmentioning

confidence: 99%

Enrichment and Cytotoxic Activity of Curcuminoids from Turmeric Using Macroporous Resins

Cheng

Jin

Xiang

et al. 2017

Journal of Food Science

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Curcuminoids are functional secondary metabolites abundant in turmeric. In the present study, a simple and efficient method for enrichment of curcuminoids from turmeric was developed using macroporous resin. Eight different types of macroporous resins were examined by static adsorption/desorption properties and the type of XDA-7 was selected as the optimum one. Under the optimized conditions, the final contents of refined extract excluded 84.2% of impurities, by comparison with crude extract in a scale-up experiment. Meanwhile, 8 representative curcuminoids including 4 dihydro- and tetrahydro-curcuminoids were enriched, isolated, and identified by liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS) and nuclear magnetic resonance (NMR) data. In addition, the individual curcuminoids were prepared to evaluate their cytotoxic activity toward HeLa tumor cell lines. All compounds, especially the trace amount of curcuminoids, demonstrated notable cytotoxic activity. The results supported that those trace amount of curcuminoids can be good candidates for drug development as anticancer agents. The purification process was simple and efficient, which could afford a potential method to enrich and concentrate not only the major curcuminoids, but also the trace amount of ones from turmeric raw materials for industrial applications.

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Acid hydrolysis of Curcuma longa residue for ethanol and lactic acid fermentation

Cited by 30 publications

References 31 publications

Microwave Assisted Acid Hydrolysis of Brown Seaweed Ascophyllum nodosum for Bioethanol Production and Characterization of Alga Residue

Microwave Assisted Acid Hydrolysis of Brown Seaweed Ascophyllum nodosum for Bioethanol Production and Characterization of Alga Residue

Characterization of isolated starch from Isatis indigotica Fort. root and anhydro-sugars preparation using its decoction residues

Enrichment and Cytotoxic Activity of Curcuminoids from Turmeric Using Macroporous Resins

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