Itaconic acid (IA) is a dicarboxylic acid included in the US Department of Energy's (DOE) 2004 list of the most promising chemical platforms derived from sugars. IA is produced industrially using liquid-state fermentation (LSF) by Aspergillus terreus with glucose as the carbon source. To utilize IA production in renewable resource-based biorefinery, the present study investigated the use of lignocellulosic biomass as a carbon source for LSF. We also investigated the production of fumaric acid (FA), which is also on the DOE's list. FA is a primary metabolite, whereas IA is a secondary metabolite and requires the enzyme cis-aconitate decarboxylase for its production. Two lignocellulosic biomasses (wheat bran and corn cobs) were tested for fungal fermentation. Liquid hydrolysates obtained after acid or enzymatic treatment were used in LSF. We show that each treatment resulted in different concentrations of sugars, metals, or inhibitors. Furthermore, different acid yields (IA and FA) were obtained depending on which of the four Aspergillus strains tested were employed. The maximum FA yield was obtained when A. terreus was used for LSF of corn cob hydrolysate (1.9% total glucose); whereas an IA yield of 0.14% was obtained by LSF of corn cob hydrolysates by A. oryzae.
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IUCrJ
January 2025
Facuty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, Poznań 61-614, Poland.
Multicomponent crystals have great scientific potential because of their amenability to crystal engineering in terms of composition and structure, and hence their properties can be easily modified. More and more research areas are employing the design of multicomponent materials to improve the known or induce novel physicochemical properties of crystals, and recently they have been explored as materials with abnormal pressure behaviour. The cocrystal of 1,2-bis(4'-pyridyl)ethane and fumaric acid (ETYFUM) exhibits a negative linear compressibility behaviour comparable to that of framework and metal-containing materials, but overcomes many of their deficiencies restricting their use.
View Article and Find Full Text PDFMicrob Cell Fact
December 2024
College of Marine Life Sciences, Ocean University of China, Yushan Road, No. 5, Qingdao, China.
Ecotoxicol Environ Saf
November 2024
Key Laboratory of Zoological Systematics and Application, School of Life Science, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China; Hebei Basic Science Center for Biotic Interaction, Hebei University, Baoding 071002, China. Electronic address:
Microplastic (MP) pollution prevalent in freshwater environments and jeopardizes the organisms living there. Dozens of studies have been conducted to investigate the harmful effects of microplastics on organisms. However, the most diverse and sensitive aquatic insects are often overlooked, also there is a lack of a comprehensive research exploring the toxicity of microplastics.
View Article and Find Full Text PDFPlants (Basel)
November 2024
Cash Crops Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530000, China.
Intercropping can enable more efficient resource use and increase yield. Most current studies focus on the correlation between soil nutrients and crop yield under intercropping conditions. However, the mechanisms related to root exudates and soil nutrients remain unclear.
View Article and Find Full Text PDFJ Fungi (Basel)
November 2024
College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou 225009, China.
The intercropping of in pear orchards has important production value in improving the utilization rate and economic benefits of the orchard; however, there is little research on the intercropping model of pear-. In this study, metabolomics analysis found that compared with greenhouse cultivation, there were 104 and 142 metabolites significantly increased and decreased in the intercropping mode of , respectively. Among them, there was a significant accumulation of amino acids (phenylalanine, lysine, proline, citrulline, and ornithine), sugars (arabinitol and glucosamine), and organic acids (quinic acid, fumaric acid, and malic acid) related to the unique taste of in intercropping cultivation.
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