Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Biodegradation Characteristics of the Eco-friendly Plastics by Seawater Microbes

해수 미생물의 환경친화성 플라스틱의 생분해 특성

  • Published : 2008.08.31
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Abstract

Degradation behavior in the seawater of Tongyeong, Incheon, Kunsan and Hongsung was explored for Mater-Bi$^{(R)}$, poly(3-hydroxybutyrate-co-3-hydroxy valerate) (PHBV), poly(butylene succinate-co-butylene adipate) (PBSA) and polycaprolactone (PCL) which can eventually be used for various fishery tools. Acinetobacter lwoffu/junii and Shewanella algae/putrefaciens inhabited all the seawater samples. Eikenella corrodens was also detected in all the seawater samples, although identified with poor confidence by VITEK system. Mater-Bi$^{(R)}$ was degraded faster than PHBV, PBSA and PCL in the seawater in contradiction to the degradation behavior in soil environment. The seawater retrieved from Incheon exhibited the most elevated activity for the plastic degradation, which may be partly ascribed to the largest number of total viable counts.

통영, 인천, 군산 및 홍성의 해수 미생물에서 각종 어업용구의 재료로 사용될 수 있는 Mater-Bi$^{(R)}$, PHBV, PBSA 및 PCL의 분해거동을 조사하였다. Acinetobacter lwoffu/junii와 Shewanella algae/putrefaciens는 모든 해수속에 서식하고 있었으며 Eikenella corrodens 역시 비록 YITEK 결과의 신뢰도가 조금 낮은 수준으로 동정되었지만 모든 해수에서 검출되었다. 해수에서는 Mater-Bi$^{(R)}$가 PHBV, PBSA및 PCL보다 더 빠르게 분해되어 토양 환경에서의 분해와는 다른 거동을 나타내었다. 인천의 해수가 이들 플라스틱에 대하여 가장 높은 분해활성을 보였으며 이는 인천의 해수가 가장 많은 수의 total viable count를 포함하고 있는데 일부 기인하는 것으로 사료된다.

Keywords

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