Abstract：
:Oil crop wastes are attractive feedstocks in microbial processes due to their low cost. However, the product yields can be limited by their undesirable nitrogen surplus. Present study proposed a one-step solid state fermentation (SSF) method for producing erythritol from unrefined oil crop wastes using a modified strain Y. lipolytica M53-S. Enhanced erythritol production (185.4 mg/gds) was obtained from peanut press cake mixed with 40% sesame meal and 10% waste cooking oil. The process was performed at pH 4.0 in 5 L flasks, with initial moisture content, NaCl addition, and inoculum size of 70%, 0.02 g/gds, and 7.5 × 104 cells/gds, respectively. This procedure showed advantages in terms of lower material cost than that of submerged fermentation and shorter culture cycle (96 h) than other SSF processes. In repeated-batch fermentation, erythritol was continuously produced for seven cycles. This study presents a feasible approach in developing an efficient erythritol cultivation from nitrogen-rich wastes.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Liu X,Yan Y,Zhao P,Song J,Yu X,Wang Z,Xia J,Wang Xdoi
10.1016/j.biortech.2019.122194subject
Has Abstractpub_date
2019-12-01 00:00:00pages
122194eissn
0960-8524issn
1873-2976pii
S0960-8524(19)31424-5journal_volume
294pub_type
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