PMID- 34629338
OWN - NLM
STAT- MEDLINE
DCOM- 20220113
LR  - 20220113
IS  - 1349-8037 (Electronic)
IS  - 0022-1260 (Linking)
VI  - 67
IP  - 6
DP  - 2021 Dec 31
TI  - Growth characteristics of Aspergillus oryzae in the presence of 
      2,4,6-trichlorophenol.
PG  - 256-259
LID - 10.2323/jgam.2021.06.001 [doi]
AB  - During the making of rice-koji for sake production, 2,4,6-trichlorophenol (TCP) 
      is O-methylated to 2,4,6-trichloroanisole (TCA) by the koji-mold, Aspergillus 
      oryzae, resulting in a musty/moldy off-odor, which significantly reduces the 
      quality of sake. Thus, we aim to develop A. oryzae strains with a less-efficient 
      ability to produce TCA. TCP is a fungicide that suppresses the growth of fungi, 
      whereas TCA does not. The exact effects of TCP on the growth of A. oryzae are 
      unknown. However, it is assumed that a strain with low TCP conversion ability 
      will be sensitive to TCP concentration. In this study, we investigated the 
      effects of the different concentrations of TCP on the growth suppression of A. 
      oryzae. As the TCP concentration in the media increased, the growth rate, and 
      conidia formation of A. oryzae slowed down. No growth was observed in liquid 
      culture (for 1 day at 30 degrees C) containing more than 30 mug/mL of TCP and in agar 
      culture (for 7 days at 30 degrees C) containing more than 50 mug/mL of TCP. However, A. 
      oryzae was able to grow on alpha rice containing higher concentrations of TCP. 
      The results in agar culture are consistent with the effects of TCP on other 
      Aspergillus species.
FAU - Endo, Michiko
AU  - Endo M
AD  - Department of Materials Science, Yonago College, National Institute of 
      Technology.
FAU - Matsui, Chika
AU  - Matsui C
AD  - Department of Materials Science, Yonago College, National Institute of 
      Technology.
FAU - Maeta, Naomi
AU  - Maeta N
AD  - Department of Materials Science, Yonago College, National Institute of 
      Technology.
FAU - Uehara, Yurina
AU  - Uehara Y
AD  - Department of Materials Science, Yonago College, National Institute of 
      Technology.
FAU - Matsuda, Ryoya
AU  - Matsuda R
AD  - Department of Materials Science, Yonago College, National Institute of 
      Technology.
FAU - Fujii, Yuzo
AU  - Fujii Y
AD  - Department of Materials Science, Yonago College, National Institute of 
      Technology.
FAU - Fujita, Akiko
AU  - Fujita A
AD  - National Research Institute of Brewing.
FAU - Fujii, Tsutomu
AU  - Fujii T
AD  - National Research Institute of Brewing.
FAU - Yamada, Osamu
AU  - Yamada O
AD  - National Research Institute of Brewing.
LA  - eng
PT  - Journal Article
DEP - 20211009
PL  - Japan
TA  - J Gen Appl Microbiol
JT  - The Journal of general and applied microbiology
JID - 0165543
RN  - 0 (Chlorophenols)
RN  - 0 (Fungicides, Industrial)
RN  - MHS8C5BAUZ (2,4,6-trichlorophenol)
SB  - IM
MH  - *Aspergillus oryzae
MH  - *Chlorophenols
MH  - *Fungicides, Industrial
MH  - *Oryza
OTO - NOTNLM
OT  - 2,4,6-trichloroanisole
OT  - 2,4,6-trichlorophenol
OT  - Aspergillus oryzae
OT  - fungicide
OT  - methylation
EDAT- 2021/10/12 06:00
MHDA- 2022/01/14 06:00
CRDT- 2021/10/11 05:41
PHST- 2021/10/12 06:00 [pubmed]
PHST- 2022/01/14 06:00 [medline]
PHST- 2021/10/11 05:41 [entrez]
AID - 10.2323/jgam.2021.06.001 [doi]
PST - ppublish
SO  - J Gen Appl Microbiol. 2021 Dec 31;67(6):256-259. doi: 10.2323/jgam.2021.06.001. 
      Epub 2021 Oct 9.