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Appl Microbiol Biotechnol

Title:		Current progress on truffle submerged fermentation: a promising alternative to its fruiting bodies
Author(s):		Tang YJ; Liu RS; Li HM;
Address:		"Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, Hubei University of Technology, Wuhan, 430068, China, yajietang@hotmail.com"
Journal Title:		Appl Microbiol Biotechnol
Year:		2015
Volume:		20150124
Issue:		5
Page Number:		2041 - 2053
DOI:		10.1007/s00253-015-6379-6
ISSN/ISBN:		1432-0614 (Electronic) 0175-7598 (Linking)
Abstract:		"Truffle (Tuber spp.), also known as 'underground gold,' is popular in various cuisines because of its unique and characteristic aroma. Currently, truffle fruiting bodies are mostly obtained from nature and semi-artificial cultivation. However, the former source is scarce, and the latter is time-consuming, usually taking 4 to 12 years before harvest of the fruiting body. The truffle submerged fermentation process was first developed in Tang's lab as an alternative to its fruiting bodies. To the best of our knowledge, most reports of truffle submerged fermentation come from Tang's group. This review examines the current state of the truffle submerged fermentation process. First, the strategy to optimize the truffle submerged fermentation process is summarized; the final conditions yielded not only the highest reported truffle biomass but also the highest production of extracellular and intracellular polysaccharides. Second, the comparison of metabolites produced by truffle fermentation and fruiting bodies is presented, and the former were superior to the latter. Third, metabolites (i.e., volatile organic compounds, equivalent umami concentration, and sterol) derived from truffle fermentation could be regulated by fermentation process optimization. These findings indicated that submerged fermentation of truffles can be used for commercial production of biomass and metabolites as a promising alternative to generating its fruiting bodies in bioreactor"
Keywords:		Ascomycota/*growth & development/*metabolism Bioreactors/*microbiology Biotechnology/*methods/trends *Fermentation Metabolome Polysaccharides/metabolism;
Notes:		"MedlineTang, Ya-Jie Liu, Rui-Sang Li, Hong-Mei eng Research Support, Non-U.S. Gov't Review Germany 2015/01/27 Appl Microbiol Biotechnol. 2015 Mar; 99(5):2041-53. doi: 10.1007/s00253-015-6379-6. Epub 2015 Jan 24"