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Title: Characterization of sporidiobolus ruineniae A45.2 cultivated in tannin substrate for use as a potential multifunctional probiotic yeast in aquaculture
Authors: Apinun Kanpiengjai
Chartchai Khanongnuch
Saisamorn Lumyong
Aksarakorn Kummasook
Suwapat Kittibunchakul
University of Phayao
Mahidol University
Chiang Mai University
Academy of Science
Keywords: Agricultural and Biological Sciences
Issue Date: 1-Dec-2020
Citation: Journal of Fungi. Vol.6, No.4 (2020), 1-15
Abstract: © 2020 by the authors. Licensee MDPI, Basel, Switzerland. At present, few yeast species have been evaluated for their beneficial capabilities as probiotics. Sporidiobolus ruineniae A45.2, a carotenoid‐producing yeast, was able to co‐produce cell-associated tannase (CAT), gallic acid and viable cells with antioxidant activity when grown in a tannic acid substrate. The aim of this research study was to identify the potential uses of S. ruineniae A45.2 obtained from a co‐production system as a potential feed additive for aquaculture. S. ruineniae A45.2 and its CAT displayed high tolerance in pH 2.0, pepsin, bile salts and pancreatin. Furthermore, its viable cells were characterized by moderate hydrophobicity, high auto‐aggregation and moderate co‐aggregation with Staphylococcus aureus, Salmonella ser. Thyphimurium and Streptococcus agalactiae. These attributes promoted S. ruineniae A45.2 as a multifunctional probiotic yeast. In addition, the intact cells possessed antioxidant activities in a 100–150 μg gallic acid equivalent (GAE)/mL culture. Remarkably, the fermentation broth demonstrated higher antioxidant activity of 9.2 ± 1.8, 9.0 ± 0.9, and 9.8 ± 0.7 mg GAE/mL culture after FRAP, DPPH and ABTS assays, respectively. Furthermore, higher antimicrobial activity was observed against Bacillus cereus, Staphylococcus aureus and Strep. agalactiae. Therefore, cultivation of S. ruineniae A45.2 with a tannic acid substrate displayed significant potential as an effective multifunctional feed additive.
ISSN: 2309608X
Appears in Collections:Scopus 2020

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