지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2012.12
- 수록면
- 7 - 13 (7page)
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초록· 키워드
오류제보하기
Discarded foods are organic wastes and are considered for use as a resource for the alternative production of fossil fuels. Non-sterile L-lactic acid fermentation of food waste was developed in a series of previous studies. In these studies, artificially prepared food waste was used to determine the optimal culture conditions. Then, food waste collected from a garbage dump was used to observe the fermentation. Thermophilic (55°C) and acidic (pH5.5?6.0) conditions were shown to aid in the production of optically pure L-lactic acid under non-sterile batch and semi-continuous modes of operation. By using 16S rDNA clone libraries, Bacillus-coagulans was detected as the dominant species during fermentation. Further, the semi-continuous modegenerated culture conditions similar to those for the optimal production of L-lactic acid, possibly because of the introduction of B. coagulans and L-lactic acid that might inhibit other bacterial growth. Thus, thermophilic and acidic fermentation of collected food waste was shown, which resulted in the production of optically pure L-lactic acid. The non-sterile fermentation that was developed is a simple technique for the conversion of the carbohydrates in feedstock into L-lactic acid. Further, the resulting lactic acid may be used as a source material for manufacturing a biodegradable polymer, polylactic acid.
목차
Introduction
Long-term non-sterile L-lactic acid fermentation
Effects of pH and temperature
Efficient culture condition
Collected food waste and its characteristics
Further work
Conclusion
References
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