直接乳酸发酵工艺研究进展

对以淀粉质为原料进行直接乳酸发酵的国内外研究现状进行了综述.介绍了利用米根霉等真菌和解淀粉乳酸细菌进行直接乳酸发酵.以及通过添加降解酶进行同步糖化发酵的三种直接乳酸发酵工艺.指出通过筛选和构建更加高效的具有解淀粉活性的乳酸细菌和真菌,同时通过获得耐受更高温度的乳酸菌来提高同步糖化发酵的温度,进而使直接乳酸发酵工艺更加高效.

Advances of direct lactic acid fermentation

The present situation of research on direct fermentation of starch bearing materials to lactic acid was summarized.The direct lactic acid fermentation progress could be mainly classified into three types, including direct lactic acid fermentation with Rhizopus oryzae and amylolytic lactic acid bacteria, and simultaneous saccharification and ferment starchy biomass to lactic acid by simultaneously adding of degrading enzymes and lactic acid producing bacteria. It was pointed out that the efficiency of lactic acid fermentation could be increased by screening and constructing of potent amylolytic lactic acid bacteria or lactic acid-producing fungal.Meanwhile, the fermentation efficiency could be improved by obtaining the thermophilic microorganisms to raise the temperature of simultaneous saccharification and fermentation.