| RRC ID |
48470
|
| 著者 |
Sameshima-Yamashita Y, Koitabashi M, Tsuchiya W, Suzuki K, Watanabe T, Shinozaki Y, Yamamoto-Tamura K, Yamazaki T, Kitamoto H.
|
| タイトル |
Enhancement of Biodegradable Plastic-degrading Enzyme Production from Paraphoma-like Fungus, Strain B47-9.
|
| ジャーナル |
J Oleo Sci
|
| Abstract |
To improve the productivity of Paraphoma-like fungal strain B47-9 for biodegradable plastic (BP)-degrading enzyme (PCLE), the optimal concentration of emulsified poly(butylene succinate-co-adipate) (PBSA) in the medium was determined. Emulsified PBSA was consumed as a sole carbon source and an inducer of PCLE production by strain B47-9. Among the various concentrations of emulsified PBSA [0.09-0.9% (w/v)] used in flask cultivation, 0.27% yielded the maximum enzyme activity within a short cultivation period. To evaluate the residual concentration of emulsified PBSA in culture, emulsified PBSA in aliquots of culture supernatant was digested in vitro, and the concentration of released monomerised succinic acid was determined. Regardless of the initial concentration of emulsified PBSA in medium, PCLE activity was detected after residual succinic acid decreased below 0.04 mg/mL in culture broth. Jarfermentation was performed at a 0.27% PBSA concentration. Among the various airflow rates tested, 1 LPM resulted in a PCLE production rate of 1.0 U/mL/day. The enzyme activity in the resulting culture filtrate (4.2 U/2 mL) was shown to degrade commercial BP films (1 × 1 cm, 20 µm thickness) within 8 hours.
|
| 巻・号 |
65(3)
|
| ページ |
257-62
|
| 公開日 |
2016-1-1
|
| DOI |
10.5650/jos.ess15207
|
| PMID |
26876678
|
| MeSH |
Adipates / metabolism*
Ascomycota / enzymology*
Biodegradable Plastics / metabolism*
Biodegradation, Environmental
Bioreactors
Carboxylic Ester Hydrolases / biosynthesis*
Culture Media
Emulsions
Fermentation
Fungal Proteins / biosynthesis*
Succinates / metabolism*
|
| IF |
1.304
|
| 引用数 |
3
|
|
WOS 分野
|
FOOD SCIENCE & TECHNOLOGY
CHEMISTRY, APPLIED
|
| リソース情報 |
| 一般微生物 |
JCM 10317 |
