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Bioresour Technol

Title:		Volatile organic compounds involved in the communication of microalgae-bacterial association extracted through Headspace-Solid phase microextraction and confirmed using gas chromatography-mass spectrophotometry
Author(s):		Chegukrishnamurthi M; Shekh A; Ravi S; Narayana Mudliar S;
Address:		"Plant Cell Biotechnology Department, CSIR- Central Food Technological Research Institute, Mysuru 570020, Karnataka, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India. Plant Cell Biotechnology Department, CSIR- Central Food Technological Research Institute, Mysuru 570020, Karnataka, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India. Electronic address: sandeepm@cftri.res.in"
Journal Title:		Bioresour Technol
Year:		2022
Volume:		20220129
Issue:
Page Number:		126775 -
DOI:		10.1016/j.biortech.2022.126775
ISSN/ISBN:		1873-2976 (Electronic) 0960-8524 (Linking)
Abstract:		"In the present study, bacterial mixture (Rhizobium and Agrobacterium) and axenic Chlorella were cultivated individually, in a mixed (co-cultured) form, and through headspace connections to study volatile organic compounds (VOCs) profile and their effect on growth. Results indicated that VOCs produced by the axenic microalgae and microalgae co-cultured with bacteria were significantly different. Axenic Chlorella predominantly produced a flavouring organic compound 2-pentadecanone (69.54%), bacterial mixed culture produced 1-decanone, 1,2,3-butanetriol, and quinoline (15-20%), and direct co-culturing of Chlorella with bacteria predominantly produced 2-pentadecanone (32.4 %). When they were allowed to communicate distantly through headspace connection, highly diversified VOCs in large numbers but low quantities were noted, predominantly 1,2-propanediol (28.82 %). In addition, growth of the co-cultured Chlorella was 1.5 times higher, while Chlorella in headspace connection with bacterial mixture exhibited approximately 3.2 times increase in growth compared to the axenic Chlorella, indicating the essential role of VOCs in growth and communication"
Keywords:		"Bacteria *Chlorella Chromatography, Gas Gas Chromatography-Mass Spectrometry/methods *Microalgae Solid Phase Microextraction/methods Spectrophotometry *Volatile Organic Compounds/analysis Chlorella Gc-ms Hs-spme Rhizobium Volatile organic compounds;"
Notes:		"MedlineChegukrishnamurthi, Madhubalaji Shekh, Ajam Ravi, Sarada Narayana Mudliar, Sandeep eng England 2022/02/02 Bioresour Technol. 2022 Mar; 348:126775. doi: 10.1016/j.biortech.2022.126775. Epub 2022 Jan 29"