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Zhao ZZ, Zhao X, Si YY, Wang ZZ, Sun YJ, Chen HP, Feng WS, Liu JK. Structure elucidation of linear triquinane sesquiterpenoids, hirsutuminoids A-Q, from the fungus Stereum hirsutum and their activities. PHYTOCHEMISTRY 2022; 200:113227. [PMID: 35533837 DOI: 10.1016/j.phytochem.2022.113227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 05/02/2022] [Accepted: 05/03/2022] [Indexed: 06/14/2023]
Abstract
Eighteen linear triquinane sesquiterpenoids (LTSs), including seventeen previously undescribed ones (hirsutuminoids A-Q), were isolated from the fermentation of the fungus Stereum hirsutum (Willd.) Pers. The structures and absolute configurations of the isolates were characterized by extensive spectroscopic analysis (1D, 2D NMR, and HRMS data), together with comparing the experimental and calculated data of both electronic circular dichroism and NMR data, as well as X-ray crystallography. Based on the literature survey and efforts on constructing the absolute configurations of these LTSs in this study, one empirical rule about the orientations of substitutions at C-2/C-3/C-7/C-9 was summarized. Anti-inflammatory and cytotoxic bioassays showed that only hirsutuminoid B inhibited the nitric oxide (NO) production in RAW 264.7 macrophages with an IC50 value, 18.9 μM.
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Affiliation(s)
- Zhen-Zhu Zhao
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, China
| | - Xuan Zhao
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, China
| | - Ying-Ying Si
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, China
| | - Zhen-Zhen Wang
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, China
| | - Yan-Jun Sun
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, China
| | - He-Ping Chen
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, 430074, China
| | - Wei-Sheng Feng
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, China
| | - Ji-Kai Liu
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, 430074, China.
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Liers C, Ullrich R, Kellner H, Chi DH, Quynh DT, Luyen ND, Huong LM, Hofrichter M, Nghi DH. Bioconversion of Lignocellulosic Materials with the Contribution of a Multifunctional GH78 Glycoside Hydrolase from Xylaria polymorpha to Release Aromatic Fragments and Carbohydrates. J Microbiol Biotechnol 2021; 31:1438-1445. [PMID: 34409952 PMCID: PMC9705965 DOI: 10.4014/jmb.2106.06053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 08/06/2021] [Accepted: 08/19/2021] [Indexed: 12/15/2022]
Abstract
A bifunctional glycoside hydrolase GH78 from the ascomycete Xylaria polymorpha (XpoGH78) possesses catalytic versatility towards both glycosides and esters, which may be advantageous for the efficient degradation of the plant cell-wall complex that contains both diverse sugar residues and esterified structures. The contribution of XpoGH78 to the conversion of lignocellulosic materials without any chemical pretreatment to release the water-soluble aromatic fragments, carbohydrates, and methanol was studied. The disintegrating effect of enzymatic lignocellulose treatment can be significantly improved by using different kinds of hydrolases and phenoloxidases. The considerable changes in low (3 kDa), medium (30 kDa), and high (> 200 kDa) aromatic fragments were observed after the treatment with XpoGH78 alone or with this potent cocktail. Synergistic conversion of rape straw also resulted in a release of 17.3 mg of total carbohydrates (e.g., arabinose, galactose, glucose, mannose, xylose) per gram of substrate after incubating for 72 h. Moreover, the treatment of rape straw with XpoGH78 led to a marginal methanol release of approximately 17 μg/g and improved to 270 μg/g by cooperation with the above accessory enzymes. In the case of beech wood conversion, the combined catalysis by XpoGH78 and laccase caused an effect comparable with that of fungal strain X. polymorpha in woody cultures concerning the liberation of aromatic lignocellulose fragments.
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Affiliation(s)
- Christiane Liers
- International Graduate School of Zittau (IHI Zittau), Dresden University of Technology, D-03583 Zittau, Germany
| | - René Ullrich
- International Graduate School of Zittau (IHI Zittau), Dresden University of Technology, D-03583 Zittau, Germany
| | - Harald Kellner
- International Graduate School of Zittau (IHI Zittau), Dresden University of Technology, D-03583 Zittau, Germany
| | - Do Huu Chi
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 431-3192, Japan
| | - Dang Thu Quynh
- Institute of Natural Products Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam,Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam
| | - Nguyen Dinh Luyen
- Institute of Natural Products Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam,Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam
| | - Le Mai Huong
- Institute of Natural Products Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam,Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam
| | - Martin Hofrichter
- International Graduate School of Zittau (IHI Zittau), Dresden University of Technology, D-03583 Zittau, Germany
| | - Do Huu Nghi
- Institute of Natural Products Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam,Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam,Corresponding author Phone: +84 (0)916670188 Fax: +84 (043) 7564 390 E-mail:
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Mišković J, Rašeta M, Čapelja E, Krsmanović N, Novaković A, Karaman M. Mushroom Species Stereum hirsutum as Natural Source of Phenolics and Fatty Acids as Antioxidants and Acetylcholinesterase Inhibitors. Chem Biodivers 2021; 18:e2100409. [PMID: 34467660 DOI: 10.1002/cbdv.202100409] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 08/30/2021] [Indexed: 01/12/2023]
Abstract
Many lignicolous mushroom species are used as a food supplement and may represent an alternative treatment of Alzheimer's disease (AD). This study aimed to evaluate acetylcholinesterase inhibition (AChEI) of Stereum hirsutum together with antioxidant activity (AO) and cytotoxic activity against HepG2 cells. Different extracts (water, ethanol, methanol, polysaccharide) were analyzed, with respect to their mineral composition and chemical content. Ethanol extract was the most potent in AChEI (98.44 %) and demonstrated cytotoxic activity (91.96 % at 900.00 μg/mL), while the highest AO was demonstrated for polar extracts (methanol and water) as well. These activities may be attributed to determined phenolics (hydroxybenzoic and quinic acid) and fatty acids (FA), while biflavonoid amentoflavone may be responsible for cytotoxic activity. The most prevalent FA was linoleic (40.00 %) and the domination of unsaturated FA (UFA) (71.91 %) over saturated (26.96 %) was observed. This is the first report of AChEI of S. hirsutum extracts and first detection of amentoflavone. Due to high amount of UFA and well-expressed AChEI, this species can be considered as a potent food supplement in the palliative therapy of AD.
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Affiliation(s)
- Jovana Mišković
- Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 3, 21000, Novi Sad, Serbia
| | - Milena Rašeta
- Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 2, 21000, Novi Sad, Serbia
| | - Eleonora Čapelja
- Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 3, 21000, Novi Sad, Serbia
| | - Nenad Krsmanović
- Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 3, 21000, Novi Sad, Serbia
| | - Aleksandra Novaković
- Institute of Food Technology, University of Novi Sad, Bulevar cara Lazara 1, 21000, Novi Sad, Serbia
| | - Maja Karaman
- Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 3, 21000, Novi Sad, Serbia
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Kondaveeti S, Patel SKS, Woo J, Wee JH, Kim SY, Al-Raoush RI, Kim IW, Kalia VC, Lee JK. Characterization of Cellobiohydrolases from Schizophyllum commune KMJ820. Indian J Microbiol 2020; 60:160-166. [PMID: 32255848 PMCID: PMC7105533 DOI: 10.1007/s12088-019-00843-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 11/20/2019] [Indexed: 12/18/2022] Open
Abstract
A novel cellobiohydrolase (CBH)-generating fungi have been isolated and categorized as Schizophyllum commune KMJ820 based on morphology and rDNA gene sequence. Cellulose powder was used as carbon source, the total enzyme activity was 11.51 U/ml is noted; which is among the highest amounts of CBH-generating microbes studied. CBH have been purified to homogenize, with pursual of serial chromatography using S. commune supernatants and two different CBHs were found; CBH 1 and 2. The filtered CBHs showed greater activity (V max = 51.4 and 20.8 U/mg) in contrast to CBHs from earlier studies. The MW (molecular weights) of S. commune CBH 1 and 2 were verified to be approximately 50 kDa and 150 kDa, respectively, by size exclusion chromatography. Even though CBHs have been evaluated from other sources, but S. commune CBH is prominent in comparison to other CBHs by its high enzyme activity.
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Affiliation(s)
- Sanath Kondaveeti
- Department of Chemical Engineering, Konkuk University, 1 Hwayang-dong, Gwangjin-gu, Seoul, 05029 Republic of Korea
| | - Sanjay K. S. Patel
- Department of Chemical Engineering, Konkuk University, 1 Hwayang-dong, Gwangjin-gu, Seoul, 05029 Republic of Korea
| | - Janghun Woo
- Department of Chemical Engineering, Konkuk University, 1 Hwayang-dong, Gwangjin-gu, Seoul, 05029 Republic of Korea
| | - Ji Hyang Wee
- Department of Food Science and Biotechnology, Shin-Ansan University, Ansan, 15435 Republic of Korea
| | - Sang-Yong Kim
- Department of Food Science and Biotechnology, Shin-Ansan University, Ansan, 15435 Republic of Korea
| | - Riyadh I. Al-Raoush
- Department of Civil and Architectural Engineering, College of Engineering, Qatar University, P.O. Box 2713, Doha, Qatar
| | - In-Won Kim
- Department of Chemical Engineering, Konkuk University, 1 Hwayang-dong, Gwangjin-gu, Seoul, 05029 Republic of Korea
| | - Vipin Chandra Kalia
- Department of Chemical Engineering, Konkuk University, 1 Hwayang-dong, Gwangjin-gu, Seoul, 05029 Republic of Korea
| | - Jung-Kul Lee
- Department of Chemical Engineering, Konkuk University, 1 Hwayang-dong, Gwangjin-gu, Seoul, 05029 Republic of Korea
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Metal accumulation by sunflower (Helianthus annuus L.) and the efficacy of its biomass in enzymatic saccharification. PLoS One 2017; 12:e0175845. [PMID: 28437478 PMCID: PMC5402931 DOI: 10.1371/journal.pone.0175845] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 03/31/2017] [Indexed: 11/21/2022] Open
Abstract
Accumulation of metal contaminants in soil as a result of various industrial and anthropogenic activities has reduced soil fertility significantly. Phytoextraction of metal contaminants can improve soil fertility and provide inexpensive feedstock for biorefineries. We investigated the hyperaccumulation capacity of sunflower (Helianthus annuus) biomass by cultivating these plants in various concentrations of metal contaminants. Sunflowers were grown in soils contaminated with various levels of heavy metals (10–2,000 mg/kg dry soil). The degree of metal uptake by different parts of the biomass and the residual concentration in the soil were estimated through inductively coupled plasma mass spectrometry. An almost 2.5-fold hyperaccumulation of Zn2+ was observed in the leaf and flower biomass compared with the concentration in the soil. For the subsequent saccharification of biomass with hyperaccumulated contaminants, a fungal lignocellulosic consortium was used. The fungal consortium cocktail retained more than 95% filter paper activity with 100 mM Ni2+ ions even after 36 h. The highest saccharification yield (SY, 87.4%) was observed with Ni2+ as the contaminant (10 mg/kg dry wt), whereas Pb2+ (251.9 mg/kg dry wt) was the strongest inhibitor of biomass hydrolysis, resulting in only a 30% SY. Importantly, the enzyme cocktail produced by the fungal consortium resulted in almost the same SY (%) as that obtained from a combination of commercial cellulase and β-glucosidase. Significant sugar conversion (61.7%) from H. annuus biomass hydrolysate occurred, resulting in the production of 11.4 g/L of bioethanol. This is the first study to assess the suitability of phytoremediated sunflower biomass for bioethanol production.
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Dhiman SS, Haw JR, Kalyani D, Kalia VC, Kang YC, Lee JK. Simultaneous pretreatment and saccharification: green technology for enhanced sugar yields from biomass using a fungal consortium. BIORESOURCE TECHNOLOGY 2015; 179:50-57. [PMID: 25514402 DOI: 10.1016/j.biortech.2014.11.059] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Revised: 11/12/2014] [Accepted: 11/13/2014] [Indexed: 06/04/2023]
Abstract
Two different biomasses were subjected to simultaneous pretreatment and saccharification (SPS) using a cocktail of hydrolytic and oxidizing enzymes. Application of a novel laccase as a detoxifying agent caused the removal of 49.8% and 32.6% of phenolic contents from the soaked rice straw and willow, respectively. Hydrolysis of soaked substrates using a newly developed fungal consortium resulted in saccharification yield of up to 74.2% and 63.6% for rice straw and willow, respectively. A high saccharification yield was obtained with soaked rice straw and willow without using any hazardous chemicals. The efficiency of each step related to SPS was confirmed by atomic force microscopy. The suitability of the developed SPS process was further confirmed by converting the hydrolysate from the process into bioethanol with 72.4% sugar conversion efficiency. To the best of our knowledge, this is the first report on the development of a less tedious, single-pot, and eco-friendly SPS methodology.
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Affiliation(s)
- Saurabh Sudha Dhiman
- Department of Chemical Engineering, Konkuk University, 1 Hwayang-Dong, Gwangjin-Gu, Seoul 143-701, Republic of Korea; Institute of SK-KU Biomaterials, Konkuk University, 1 Hwayang-Dong, Gwangjin-Gu, Seoul 143-701, Republic of Korea
| | - Jung-Rim Haw
- Institute of SK-KU Biomaterials, Konkuk University, 1 Hwayang-Dong, Gwangjin-Gu, Seoul 143-701, Republic of Korea
| | - Dayanand Kalyani
- Department of Chemical Engineering, Konkuk University, 1 Hwayang-Dong, Gwangjin-Gu, Seoul 143-701, Republic of Korea
| | - Vipin C Kalia
- Microbial Biotechnology and Genomics, CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi 110007, India
| | - Yun Chan Kang
- Department of Materials Science and Engineering, Korea University, Anam-Dong, Seongbuk-Gu, Seoul 136-713, Republic of Korea
| | - Jung-Kul Lee
- Department of Chemical Engineering, Konkuk University, 1 Hwayang-Dong, Gwangjin-Gu, Seoul 143-701, Republic of Korea; Institute of SK-KU Biomaterials, Konkuk University, 1 Hwayang-Dong, Gwangjin-Gu, Seoul 143-701, Republic of Korea.
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Ma K, Bao L, Han J, Jin T, Yang X, Zhao F, Li S, Song F, Liu M, Liu H. New benzoate derivatives and hirsutane type sesquiterpenoids with antimicrobial activity and cytotoxicity from the solid-state fermented rice by the medicinal mushroom Stereum hirsutum. Food Chem 2014; 143:239-45. [DOI: 10.1016/j.foodchem.2013.07.124] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Revised: 06/14/2013] [Accepted: 07/25/2013] [Indexed: 10/26/2022]
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Feng Y, Jiang J, Zhu L, Yue L, Zhang J, Han S. Effects of tea saponin on glucan conversion and bonding behaviour of cellulolytic enzymes during enzymatic hydrolysis of corncob residue with high lignin content. BIOTECHNOLOGY FOR BIOFUELS 2013; 6:161. [PMID: 24225035 PMCID: PMC3832225 DOI: 10.1186/1754-6834-6-161] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Accepted: 11/05/2013] [Indexed: 05/28/2023]
Abstract
BACKGROUND Recently, interest in the utilization of corncob residue (CCR, with high lignin of 45.1%) as a feedstock for bioethanol has been growing. Surfactants have been one of the most popular additives intended to prevent the inhibitory effect of lignin on cellulolytic enzymes, thereby improving hydrolysis. In this study, the effects of biosurfactant tea saponin (TS) on the enzymatic hydrolysis of CCR and the bonding behavior of cellulolytic enzymes to the substrate were investigated. The surface tension in the supernatant was also detected to obtain information about the characteristics and stability of TS. RESULTS The glucose concentration was 17.15 mg/mL at 120 hours of hydrolysis with the low loading of cellulolytic enzymes (7.0 FPU/g cellulose and 10.5 BGU/g cellulose) and 5% CCR. The optimal dosage of TS was its critical micelle concentration (cmc, 1.80 mg/mL). The glucose yield was enhanced from 34.29 to 46.28 g/100 g dry matter by TS. The results indicate that TS can promote the adsorption of cellulolytic enzymes on the substrate and mediate the release of adsorbed enzymes. Meanwhile, TS improves the recovery of the cellulolytic enzymes after a hydrolysis cycle and prevents deactivation of the enzymes during the intense shaking process. The surface tension in supernatants of digested CCR with TS remained at 50.00 mN/m during the course of hydrolysis. It is interesting to note that biosurfactant TS can maintain the surface tension in supernatants, despite its digestibility by cellulolytic enzymes. CONCLUSIONS Serving as an accelerant of lignocellulose hydrolysis, TS can also be degraded by the cellulolytic enzymes and release glucose while retaining stability, which reduces the cost of both the cellulolytic enzymes and the additive. As the glucose from the TS could be utilized by yeast, further efforts will investigate the mechanism of function and the application of TS in the production of ethanol by simultaneous saccharification and fermentation (SSF).
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Affiliation(s)
- Yue Feng
- Institute of Applied Ecology, Chinese Academy of Sciences, 72 Wenhua Road, Shenhe District, Shenyang City, Liaoning Province 110016, People's Republic of China
| | - Jianxin Jiang
- Department of Chemistry and Chemical Engineering, Beijing Forestry University, 35 Qinghua East Road, Haidian District, Beijing 100083, People's Republic of China
| | - Liwei Zhu
- Department of Chemistry and Chemical Engineering, Beijing Forestry University, 35 Qinghua East Road, Haidian District, Beijing 100083, People's Republic of China
| | - Linyan Yue
- Institute of Applied Ecology, Chinese Academy of Sciences, 72 Wenhua Road, Shenhe District, Shenyang City, Liaoning Province 110016, People's Republic of China
| | - Junhui Zhang
- Institute of Applied Ecology, Chinese Academy of Sciences, 72 Wenhua Road, Shenhe District, Shenyang City, Liaoning Province 110016, People's Republic of China
| | - Shijie Han
- Institute of Applied Ecology, Chinese Academy of Sciences, 72 Wenhua Road, Shenhe District, Shenyang City, Liaoning Province 110016, People's Republic of China
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Chang C, Xu G, Jiang X. Production of ethyl levulinate by direct conversion of wheat straw in ethanol media. BIORESOURCE TECHNOLOGY 2012; 121:93-99. [PMID: 22858471 DOI: 10.1016/j.biortech.2012.06.105] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2012] [Revised: 06/29/2012] [Accepted: 06/29/2012] [Indexed: 06/01/2023]
Abstract
The production of ethyl levulinate from wheat straw by direct conversion in ethanol media was investigated. Response surface methodology (RSM) was applied to optimize the effects of processing parameters, and the regression analysis was performed on the data obtained. A close agreement between the experimental results and the model predictions was achieved. The optimal conditions for ethyl levulinate production from wheat straw were acid concentration 2.5%, reaction temperature 183°C, mass ratio of liquid to solid 19.8 and reaction time 36 min. Under the optimum conditions, the yield of ethyl levulinate 17.91% was obtained, representing a theoretical yield of 51.0%. The results suggest that wheat straw can be used as potential raw materials for the production of ethyl levulinate by direct conversion in ethanol media.
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Affiliation(s)
- Chun Chang
- School of Chemical Engineering and Energy, Zhengzhou University, Science Road 100, Zhengzhou 450001, China.
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