In-Situ Yeast Fermentation Medium in Fortifying Protein and Lipid Accumulations in the Harvested Larval Biomass of Black Soldier Fly

doi:10.3390/pr8030337

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Title:	In-Situ Yeast Fermentation Medium in Fortifying Protein and Lipid Accumulations in the Harvested Larval Biomass of Black Soldier Fly
Authors:	Wong, Chung Yiin;Ho, Yeek Chia;Lim, Jun Wei;Show, Pau Loke;Chong, Siewhui;Chan, Yi Jing;Ho, Chii-Dong;Mohamad, Mardawani;Wu, Ta Yeong;Lam, Man Kee;Pan, Guan Ting
Keywords:	black soldier fly;yeast;fermentation;protein;larvae;organic waste;coconut endosperm waste
Date:	2020
Issue Date:	2020-06-01 12:11:37 (UTC+8)
Publisher:	Elsevier
Abstract:	Recently, worldwide researchers have been focusing on exploiting of black soldier flylarval (BSFL) biomass to serve as the feed mediums for farmed animals, including aquaculturefarming,in order toassuage the rising demands for protein sources. In this study, yeast wasintroduced into coconut endosperm waste (CEW) whilst serving as the feeding medium to rearBSFL in simultaneously performed in situ fermentation. It was found that at a 2.5 wt% yeastconcentration, the total biomass gained, growth rate and rearing time were improved to 1.145 g,0.085 g/day and 13.5 days, respectively. In terms of solid waste reduction, the inoculation of yeastover 0.5 wt% in CEW was able to achieve more than 50% overall degradation, with the wastereduction indexes (WRIs) ranging from 0.038 to 0.040 g/day. Disregarding the concentration ofyeast introduced, the protein productivity from 20 BSFL was enhanced from only 0.018 g/day (thecontrol) to 0.025 g/day with the presence of yeast at arbitrary concentrations. On the other hand,the larval protein yield was fortified from the control (28%) to a highest value of 35% with thepresence of a mere 0.02 wt% yeast concentration. To summarize, the inclusion of a minimal amountof yeast into CEW for in situ fermentation ultimately enhanced the growth of BSFL, as well as itsprotein yield and productivity.
Relation:	Processes 8(3), p.837-846
DOI:	10.3390/pr8030337
Appears in Collections:	[Graduate Institute & Department of Chemical and Materials Engineering] Journal Article

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