Abstract:
:The potential for microbial protein production in the mixture of yellow wine lees and rice soaking wastewater was examined. Strong symbiotic effect was observed in fermentation with yeast-fungus mixed culture of Candida utilis and Geochichum candidum at a ratio of 1:1 (v/v). The maximum specific biomass yield of 4.91 ± 0.48 g final biomass/g initial biomass with a protein content of 68.5 ± 1.0% was achieved at inoculum-to-substrate ratio of 10% (v/v) and aeration rate of 1.0 volumeair/volumeliquid/min. The essential amino acids contents of the derived protein were comparable to commercial protein sources with high amounts of methionine (2.87%, based on total protein). The reduction in soluble chemical oxygen demand of 79.4 ± 0.4% was mainly due to uptake of carbohydrate, soluble protein, volatile fatty acids, amino acids, etc. The application of mixed yeast-fungus technology provides a new opportunity for microbial protein production from these low-value organic residue streams.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Zhu W,He Q,Gao H,Nitayavardhana S,Khanal SK,Xie Ldoi
10.1016/j.biortech.2019.122565subject
Has Abstractpub_date
2020-03-01 00:00:00pages
122565eissn
0960-8524issn
1873-2976pii
S0960-8524(19)31795-Xjournal_volume
299pub_type
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