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Jerusalem artichokes

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https://www.readbyqxmd.com/read/28801602/fermentative-hydrogen-production-from-jerusalem-artichoke-by-clostridium-tyrobutyricum-expressing-exo-inulinase-gene
#1
Ling Jiang, Qian Wu, Qing Xu, Liying Zhu, He Huang
Clostridium tyrobutyricum ATCC25755 has been reported as being able to produce significant quantities of hydrogen. In this study, the exo-inulinase encoding gene cloned from Paenibacillus polymyxa SC-2 was into the expression plasmid pSY6 and expressed in the cells of C. tyrobutyricum. The engineered C. tyrobutyricum strain efficiently fermented the inulin-type carbohydrates from Jerusalem artichoke, without any pretreatment being necessary for the production of hydrogen. A comparatively high hydrogen yield (3...
August 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28731563/improving-fructose-utilization-and-butanol-production-by-clostridium-acetobutylicum-via-extracellular-redox-potential-regulation-and-intracellular-metabolite-analysis
#2
Li-Jie Chen, You-Duo Wu, Chuang Xue, Feng-Wu Bai
Jerusalem artichoke (JA) can grow well in marginal lands with high biomass yield, and thus is a potential energy crop for biorefinery. The major biomass of JA is from tubers, which contain inulin that can be easily hydrolyzed into a mixture of fructose and glucose, but fructose utilization for producing butanol as an advanced biofuel is poor compared to glucose-based ABE fermentation by Clostridium acetobutylicum. In this article, the impact of extracellular redox potential (ORP) on the process was studied using a mixture of fructose and glucose to simulate the hydrolysate of JA tubers...
July 21, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/28647180/helianthus-tuberosus-jerusalem-artichoke-tubers-improve-glucose-tolerance-and-hepatic-lipid-profile-in-rats-fed-a-high-fat-diet
#3
Naoto Okada, Shinya Kobayashi, Kouta Moriyama, Kohsuke Miyataka, Shinji Abe, Chiemi Sato, Kazuyoshi Kawazoe
OBJECTIVES: To analyze the effects of feeding Helianthus tuberosus (HT) tubers on glucose tolerance and lipid profile in rats fed a high-fat diet (HFD). METHODS: A normal HFD or HFD including 10 w/w% HT tubers (HFD + HT) was fed to F334/Jcl rats. After 10 weeks, organ weights, glucose tolerance, and lipid profile were analyzed. RESULTS: The body weight, liver weight, and epidermal fat content in the HFD group were higher than those of the normal group, and similar to those of the HFD + HT group...
May 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28627061/glycaemic-and-insulinaemic-responses-of-adult-healthy-warm-blooded-mares-following-feeding-with-jerusalem-artichoke-meal
#4
M Glatter, M Bochnia, F Goetz, J Gottschalk, G Koeller, N Mielenz, D Hillegeist, J M Greef, A Einspanier, A Zeyner
This study aimed to investigate the impact of the supplementation of a pre-biotic compound [Jerusalem artichoke meal (JAM)] on the glycaemic and insulinaemic response in healthy, non-obese warm-blooded horses. Six adult mares [mean body weight (bwt) 529 ± 38.7 kg; body condition score 5.1 ± 0.49/9] were used. In two equal meals per day, the horses received crushed oat grains (1 g starch/kg bwt per day) and meadow hay (2 kg/100 kg bwt per day) which together were likely to meet the energy recommendation for light work (GfE, )...
June 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28624998/efficient-conversion-of-fructose-based-biomass-into-lipids-with-trichosporon-fermentans-under-phosphate-limited-conditions
#5
Ruiqi Bao, Xiangying Wu, Sasa Liu, Tongzhou Xie, Chenxu Yu, Xinping Lin
Limiting nitrogen supply has been routinely used as the master regulator to direct lipid biosynthesis. However, this strategy does not work with nitrogen-rich substrates, such as Jerusalem artichoke (JA), a fructose-based biomass, while it is difficult to obtain a high carbon-to-nitrogen (C/N) molar ratio. In this study, an alternative strategy to promote lipid accumulation by the oleaginous yeast Trichosporon fermentans CICC 1368 was developed by limiting phosphorous supply, and this strategy was implemented with JA hydrolysate as substrate...
June 17, 2017: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/28616072/the-advanced-strategy-for-enhancing-biobutanol-production-and-high-efficient-product-recovery-with-reduced-wastewater-generation
#6
Chuang Xue, Xiaotong Zhang, Jufang Wang, Min Xiao, Lijie Chen, Fengwu Bai
BACKGROUND: Butanol as an important chemical and potential fuel could be produced via ABE fermentation from lignocellulosic biomass. The use of food-related feedstocks such as maize and sugar cane may not be a sustainable solution to world's energy needs. Recently, Jerusalem artichoke tubers containing inulin have been used as feedstock for butanol production, but this bioprocess is not commercially feasible due to the great value of inulin as functional food. Till now, there is a gap on the utilization of Jerusalem artichoke stalk (JAS) as feedstock for microbial butanol production...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28554523/improved-ethanol-production-at-high-temperature-by-consolidated-bioprocessing-using-saccharomyces-cerevisiae-strain-engineered-with-artificial-zinc-finger-protein
#7
M Mahfuza Khatun, Xinshui Yu, Akihiko Kondo, Fengwu Bai, Xinqing Zhao
In this work, the consolidated bioprocessing (CBP) yeast Saccharomyces cerevisiae MNII/cocδBEC3 was transformed by an artificial zinc finger protein (AZFP) library to improve its thermal tolerance, and the strain MNII-AZFP with superior growth at 42°C was selected. Improved degradation of acid swollen cellulose by 45.9% led to an increase in ethanol production, when compared to the control strain. Moreover, the fermentation of Jerusalem artichoke stalk (JAS) by MNII-AZFP was shortened by 12h at 42°C with a concomitant improvement in ethanol production...
May 18, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28521229/development-of-jerusalem-artichoke-resource-for-efficient-one-step-fermentation-of-poly-%C3%AE-glutamic-acid-using-a-novel-strain-bacillus-amyloliquefaciens-nx-2s
#8
Yibin Qiu, Yuanyuan Sha, Yatao Zhang, Zongqi Xu, Sha Li, Peng Lei, Zheng Xu, Xiaohai Feng, Hong Xu
This study aimed to develop non-food fermentation for the cost-effective production of poly-(γ-glutamic acid) (γ-PGA) using a novel strain of Bacillus amyloliquefaciens NX-2S. The new isolate assimilated inulin more efficiently than other carbohydrates from Jerusalem artichoke, without hydrolytic treatment. To investigate the effect of inulin on γ-PGA production, the transcript levels of γ-PGA synthetase genes (pgsB, pgsC, pgsA), regulatory genes (comA, degQ, degS), and the glutamic acid biosynthesis gene (glnA) were analyzed; inulin addition upregulated these key genes...
September 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28341907/utilization-of-inulin-containing-waste-in-industrial-fermentations-to-produce-biofuels-and-bio-based-chemicals
#9
REVIEW
Stephen R Hughes, Nasib Qureshi, Juan Carlos López-Núñez, Marjorie A Jones, Joshua M Jarodsky, Luz Ángela Galindo-Leva, Mitchell R Lindquist
Inulins are polysaccharides that belong to an important class of carbohydrates known as fructans and are used by many plants as a means of storing energy. Inulins contain 20 to several thousand fructose units joined by β-2,1 glycosidic bonds, typically with a terminal glucose unit. Plants with high concentrations of inulin include: agave, asparagus, coffee, chicory, dahlia, dandelion, garlic, globe artichoke, Jerusalem artichoke, jicama, onion, wild yam, and yacón. To utilize inulin as its carbon and energy source directly, a microorganism requires an extracellular inulinase to hydrolyze the glycosidic bonds to release fermentable monosaccharides...
April 2017: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28338054/identification-of-hexose-kinase-genes-in-kluyveromyces-marxianus-and-thermo-tolerant-one-step-producing-glucose-free-fructose-strain-construction
#10
Guorong Zhang, Min Lu, Jichao Wang, Dongmei Wang, Xiaolian Gao, Jiong Hong
In yeast, the hexose assimilation is started at hexose phosphorylation. However, in Kluyveromyces marxianus, the hexokinase (HXK) and glucokinase (GLK) genes were not identified by experiments. Meanwhile, the glucose-free fructose product requires more cost-efficient method. In this study, the KmHXK1 and KmGLK1 genes were functionally identified through gene disruption, over-expression and recombinant enzymes characterization. Both glucose and fructose assimilation ability decreased significantly in KmHXK1 disrupted strain YLM001, however, this ability was not changed obviously in KmGLK1 disrupted strain YLM002...
March 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28315963/enhancement-of-2-3-butanediol-production-from-jerusalem-artichoke-tuber-extract-by-a-recombinant-bacillus-sp-strain-brc1-with-increased-inulinase-activity
#11
Jang Min Park, Baek-Rock Oh, In Yeong Kang, Sun-Yeon Heo, Jeong-Woo Seo, Seung-Moon Park, Won-Kyung Hong, Chul Ho Kim
A Bacillus sp. strain named BRC1 is capable of producing 2,3-butanediol (2,3-BD) using hydrolysates of the Jerusalem artichoke tuber (JAT), a rich source of the fructose polymer inulin. To enhance 2,3-BD production, we undertook an extensive analysis of the Bacillus sp. BRC1 genome, identifying a putative gene (sacC) encoding a fructan hydrolysis enzyme and characterizing the activity of the resulting recombinant protein expressed in and purified from Escherichia coli. Introduction of the sacC gene into Bacillus sp...
March 18, 2017: Journal of Industrial Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28298683/fructan-fructan-1-fructosyltransferase-and-inulin-hydrolase-activities-relating-to-inulin-and-soluble-sugars-in-jerusalem-artichoke-helianthus-tuberosus-linn-tubers-during-storage
#12
Sukanya Maicaurkaew, Sanun Jogloy, Bruce R Hamaker, Suwayd Ningsanond
Influences of harvest time and storage conditions on activities of fructan:fructan1-fructosyltransferase (1-FFT) and inulin hydrolase (InH) in relation to inulin and soluble sugars of Jerusalem artichoke (Helianthus tuberosus L.) tubers were investigated. Maturity affected 1-FFT-activity, inulin contents, and inulin profiles of the tubers harvested between 30 and 70 days after flowering (DAF). Decreases in 1-FFT activity, high molecular weight inulin, and inulin content were observed in late-harvested tubers...
March 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28216099/the-draft-genome-sequence-of-the-ascomycete-fungus-penicillium-subrubescens-reveals-a-highly-enriched-content-of-plant-biomass-related-cazymes-compared-to-related-fungi
#13
Mao Peng, Adiphol Dilokpimol, Miia R Mäkelä, Kristiina Hildén, Sander Bervoets, Robert Riley, Igor V Grigoriev, Matthieu Hainaut, Bernard Henrissat, Ronald P de Vries, Zoraide Granchi
Here we report the genome sequence of the ascomycete saprobic fungus Penicillium subrubescens FBCC1632/CBS132785 isolated from a Jerusalem artichoke field in Finland. The 39.75Mb genome containing 14,188 gene models is highly similar for that reported for other Penicillium species, but contains a significantly higher number of putative carbohydrate active enzyme (CAZyme) encoding genes.
March 20, 2017: Journal of Biotechnology
https://www.readbyqxmd.com/read/28177802/plant-growth-promotion-properties-of-bacterial-strains-isolated-from-the-rhizosphere-of-the-jerusalem-artichoke-helianthus-tuberosus-l-adapted-to-saline-alkaline-soils-and-their-effect-on-wheat-growth
#14
Xiaolin Liu, Xiangyue Li, Yan Li, Runzhi Li, Zhihong Xie
The Jerusalem artichoke (JA; Helianthus tuberosus), known to be tolerant to saline-alkaline soil conditions, has been cultivated for many years in the Yellow River delta, Shandong Province coastal zone, in China. The aim of our study was to isolate nitrogen-fixing bacteria colonizing the rhizosphere of JA and to characterize other plant growth promotion properties. The ultimate goal was to identify isolates that could be used as inoculants benefiting an economic crop, in particular for improving wheat growth production in the Yellow River delta...
March 2017: Canadian Journal of Microbiology
https://www.readbyqxmd.com/read/28139048/simultaneous-quantitative-determination-of-11-sesquiterpene-lactones-in-jerusalem-artichoke-helianthus-tuberosus-l-leaves-by-ultra-high-performance-liquid-chromatography-with-quadrupole-time-of-flight-mass-spectrometry
#15
Xiaoyan Yuan, Qianxu Yang
A method of ultra high performance liquid chromatography coupled to quadrupole time-of-flight mass spectrometry was developed for the simultaneous quantification of 11 sesquiterpene lactones in 11 Jerusalem artichoke leaf samples harvested in a number of areas at different periods. The optimal chromatographic conditions were achieved on a ZORBAX Eclipse Plus C18 column (3.0 × 150 mm, 1.8 μm) with linear gradient elution of methanol and water in 8 min. Quantitative analysis was carried out under selective ion monitoring mode...
January 31, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28134269/conversion-from-long-term-cultivated-wheat-field-to-jerusalem-artichoke-plantation-changed-soil-fungal-communities
#16
Xingang Zhou, Jianhui Zhang, Danmei Gao, Huan Gao, Meiyu Guo, Li Li, Mengliang Zhao, Fengzhi Wu
Understanding soil microbial communities in agroecosystems has the potential to contribute to the improvement of agricultural productivity and sustainability. Effects of conversion from long-term wheat plantation to Jerusalem artichoke (JA) plantation on soil fungal communities were determined by amplicon sequencing of total fungal ITS regions. Quantitative PCR and PCR-denaturing gradient gel electrophoresis were also used to analyze total fungal and Trichoderma spp. ITS regions and Fusarium spp. Ef1α genes...
January 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/27999966/consolidated-ethanol-production-from-jerusalem-artichoke-tubers-at-elevated-temperature-by-saccharomyces-cerevisiae-engineered-with-inulinase-expression-through-cell-surface-display
#17
M Mahfuza Khatun, Chen-Guang Liu, Xin-Qing Zhao, Wen-Jie Yuan, Feng-Wu Bai
Ethanol fermentation from Jerusalem artichoke tubers was performed at elevated temperatures by the consolidated bioprocessing strategy using Saccharomyces cerevisiae MK01 expressing inulinase through cell surface display. No significant difference was observed in yeast growth when temperature was controlled at 38 and 40 °C, respectively, but inulinase activity with yeast cells was substantially enhanced at 40 °C. As a result, enzymatic hydrolysis of inulin was facilitated and ethanol production was improved with 89...
December 20, 2016: Journal of Industrial Microbiology & Biotechnology
https://www.readbyqxmd.com/read/27960291/inhibitory-effect-of-methyl-2-4-methoxy-4-oxobutanamide-benzoate-from-jerusalem-artichoke-helianthus-tuberosus-on-the-inflammatory-paracrine-loop-between-macrophages-and-adipocytes
#18
Yun Joo Jung, Byung Oh Kim, Jong Hwan Kwak, Suhkneung Pyo
The interaction between macrophages and adipocytes is known to aggravate inflammation of the adipose tissue, leading to decreased insulin sensitivity. Hence, attenuation of the inflammatory paracrine loop between macrophages and adipocytes is deemed essential to ameliorate insulin resistance and diabetes mellitus type 2. Methyl 2-(4'-methoxy-4'-oxobutanamide) benzoate (compound 1), a newly isolated compound from Jerusalem srtichoke (JA), has not been biologically characterized yet. Here, we investigated whether JA-derived compound 1 attenuates the inflammatory cycle between RAW 264...
December 14, 2016: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/27943035/research-on-the-solid-state-fermentation-of-jerusalem-artichoke-pomace-for-producing-r-r-2-3-butanediol-by-paenibacillus-polymyxa-zj-9
#19
Can Cao, Li Zhang, Jian Gao, Hong Xu, Feng Xue, Weiwei Huang, Yan Li
R,R-2,3-butanediol (R,R-2,3-BD) was produced by Paenibacillus polymyxa ZJ-9, which was capable of utilizing inulin without previous hydrolysis. The Jerusalem artichoke pomace (JAP) derived from the conversion of Jerusalem artichoke powder into inulin extract, which was usually used for biorefinery by submerged fermentation (SMF), was utilized in solid state fermentation (SSF) to produce R,R-2,3-BD. In this study, the fermentation parameters of SSF were optimized and determined in flasks. A novel bioreactor was designed and assembled for the laboratory scale-up of SSF, with a maximum yield of R,R-2,3-BD (67...
June 2017: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/27813587/development-and-characterization-of-novel-est-ssr-markers-and-their-application-for-genetic-diversity-analysis-of-jerusalem-artichoke-helianthus-tuberosus-l
#20
T Mornkham, P P Wangsomnuk, X C Mo, F O Francisco, L Z Gao, H Kurzweil
Jerusalem artichoke (Helianthus tuberosus L.) is a perennial tuberous plant and a traditional inulin-rich crop in Thailand. It has become the most important source of inulin and has great potential for use in chemical and food industries. In this study, expressed sequence tag (EST)-based simple sequence repeat (SSR) markers were developed from 40,362 Jerusalem artichoke ESTs retrieved from the NCBI database. Among 23,691 non-redundant identified ESTs, 1949 SSR motifs harboring 2 to 6 nucleotides with varied repeat motifs were discovered from 1676 assembled sequences...
October 24, 2016: Genetics and Molecular Research: GMR
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