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Title 

Efficient production of poly γ?d?glutamic acid from the bloom?forming green macroalgae, Ulva sp., by Bacillus sp. SJ?10

Authors 

J H KimJong Min LeeW J JangH D ParkY O KimC H KimI S Kong

Publisher 

Wiley

Issue Date 

2019

Citation 

Biotechnology and Bioengineering

Keywords 

Bacillus sp. SJ­10macroalgaemarine renewable resourcepoly γ­D­glutamic acidUlva sp.

Abstract 

Numerous studies on poly γ­D­glutamic acid (γ­PGA) production have investigated terrestrial renewable sources for reducing production costs, but there are no studies using waste marine resources so far. We aimed to develop a cost­effective production method of γ­D­PGA by Bacillus sp. SJ­10 using green macroalgae (Ulva sp.) as a major substrate without hydrolysis pretreatment. The SJ­10 was shown to not only cause immediate tissue degradation of the Ulva membrane but also grew well as a sole substrate. The γ­D­PGA yield was 6.29 ± 0.34 g/L under optimized conditions via the response surface method, and the produced γ­D­PGA had a thermal decomposition temperature of 310°C and molecular weight of 250?1780 kDa. The calculated cost efficiency for the final yield was 32% when compared with complex media. Therefore, the present study provided a strategy for promoting an ecofriendly and cost­effective means to produce γ­D­PGA via a marine renewable resource.

URI 

https://doi.org/10.1002/bit.26966

ISSN 

0006-3592

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2019-07-10


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