关键词: 亚麻木脂素, 微生物发酵, 提取

Abstract:

Some studies confirmed that microbial fermentation of flaxseed meal is helpful to increase extraction yield of secoisolariciresinol diglucoside (SDG) from it. This conclusion was also proved in the present study, and Asp.oryzae 39# was screened as the fermentation strain due to its higher increasing effect on extraction yield of SDG than that of Asp. niger 848 and yeast. Furthermore, effects of fermentation conditions (such as fermentation time, temperature, and inoculation amount) of Asp.oryzae 39# on extraction yield of SDG were investigated. Results showed that the better fermentation time, temperature, and inoculation amount were 120 h, 25 to 30 ℃, and 2.5%, respectively. Under the above conditions the extraction yield of SDG was up to 21% to 22% and the SDG content in the extract is 16‰ to 17‰.

Key words: secoisolariciresinol diglucoside, microbial fermentation, extraction