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Biogas digester liquid as a supplement for higher yields of Hypsizgus ulmarius

Malayil, Sreesha and Chanakya, HN and Ashwath, Roopa and Suresh, Hasika (2017) Biogas digester liquid as a supplement for higher yields of Hypsizgus ulmarius. In: ENVIRONMENTAL TECHNOLOGY & INNOVATION, 8 . pp. 269-281.

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Official URL: http://dx.doi.org/10.1016/j.eti.2017.05.001


Biogas digester liquid (BDL), one of the output from an ASTRA-PFR biomass based biogas plant was added as a nutrient source to Hypsizgus ulmarius ready to fruit bags. Supplementing the ready to fruit bags with BDL increased the yield from 1.9-3.5 kg/kg substrate and reduced the time for various stages of mushroom formation such as pin head formation, fruiting body formation and first flush. Mass balances of C, N & P were studied and it was shown that spraying pre-packed ready to fruit mushroom bags with BDL could enhance and speedup the utilization of these with addition of BDL. Metal and heavy metal uptake by Hypsizgus ulmarius from BDL shows that few metals like Na, K, Ca and Mg could be effectively incorporated into fungal body. Heavy metals such as Co, Cr and Ni were lower in BDL supplemented Hypsizgus ulmarius. Supplementing BDL also leads to recovery of enzyme cocktail with laccase activity (296 U/gTS on day 58) and peroxidase activity (367 U/gTS on day 52) which could be further used for various industrial applications. (C) 2017 Elsevier B.V. All rights reserved.

Item Type: Journal Article
Additional Information: Copy right for this article belong to ELSEVIER SCIENCE BV
Keywords: Biogas digester liquid; Mushroom cultivation; Heavy metal uptake; Lignocellulolytic enzymes; Laccase; Peroxidase
Department/Centre: Division of Mechanical Sciences > Centre for Sustainable Technologies (formerly ASTRA)
Date Deposited: 05 Oct 2018 15:06
Last Modified: 28 Feb 2019 06:15
URI: http://eprints.iisc.ac.in/id/eprint/60825

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