Development of utilization method for unused biomass using marine lactic acid bacteria

为了有效利用甲壳素及其相关物质，比较了来源于海鱼、干酪发酵剂和淡水鱼的乳酸菌中甲壳素相关糖的利用率。结果表明，在含有GlcNAc-（GlcNAc）_6的培养基中观察到鱼源菌株中几丁质寡糖的发酵，而在含有GlcNAc-（GlcNAc）_3的培养基中观察到来自干酪发酵剂的菌株中几丁质寡糖的发酵。此外，海鱼来源的乳酸发酵产物中光学异构体的比例高于其他来源的乳酸发酵产物。此外，海洋菌株培养物中L-乳酸的量是其他来源的菌株培养物中L-乳酸的量的3.5-4.4倍。

To utilize effectively chitin and the associated materials which is one of unused biomass, availability of chitin-associated sugars in lactic acid bacteria, Lactococcus lactis, derived from marine fish was compared with those from other sources, such as cheese starter and freshwater fish. As the results, fermentation of chitin oligosaccharides in the strains derived from fish were observed in the media containing GlcNAc-(GlcNAc)_6, whereas those from cheese starter were observed in GlcNAc-(GlcNAc)_3. In addition, ratio of optical isomer in products for L-lactic acid in marine fish derived strain culture was higher than those in other sources. Furthermore, the amount of L-lactic acid in marine strain culture was 3.5-4.4 folds higher than those in other sources.