通过产油真菌降低石油废物中的化学需氧量和生物需氧量：将食品副产品转化为必需脂肪酸的尝试。
Reduction of Chemical and Biological Oxygen Demands from Oil Wastes via Oleaginous Fungi: An Attempt to Convert Food by Products to Essential Fatty Acids.
作者信息
Mirbagheri Maryam, Nahvi Iraj, Emamzade Rahman
机构信息
Department of Biology, Faculty of Science, University of Isfahan, Isfahan, Iran.
出版信息
Iran J Biotechnol. 2015 Jun;13(2):25-30. doi: 10.15171/ijb.1026.
BACKGROUND
The production of waste pollutants has become a major problem for many food and oil industries. However, oil wastes can provide alternative substrates for industry, which could help to solve environmental pollution problems. Furthermore, oil wastes can be used as substrates to produce unsaturated fatty acids, which are important for health.
OBJECTIVES
The production of fatty acids in fungi using oil wastes and renewable substrates were investigated.
MATERIALS AND METHODS
Oil waste sources were obtained from food factories and restaurants (F1, F2, F3, R1, and R2). DSM1905 and DSM2194 were used to treat the wastes. Changes in lipid and fatty acid contents, biomass, and pH were monitored.
RESULTS
produced about 18.4 and 20.1% gamma linolenic acid (GLA) from the R1 and R2 oil wastes, respectively. It also produced 9.3% and 12.4% linolenate from the F2 and F3 wastes. produced 21% GLA from R1 and 9.3% linolenate from F3. reduced biological oxygen demand (BOD) and chemical oxygen demand (COD) by 67%-74% and 50%-98%, respectively. reduced BOD by 36%-74% and COD by 10%-78%.
CONCLUSIONS
This study emphasized the abilities of oleaginous fungi to utilize oil wastes as carbon sources to reduce BOD and COD of the wastes, producing essential fatty acids.
背景
废弃物污染物的产生已成为许多食品和石油行业的一个主要问题。然而，石油废弃物可为工业提供替代底物，这有助于解决环境污染问题。此外，石油废弃物可用作底物来生产对健康很重要的不饱和脂肪酸。
目的
研究利用石油废弃物和可再生底物在真菌中生产脂肪酸的情况。
材料与方法
石油废弃物来源为食品工厂和餐馆（F1、F2、F3、R1和R2）。使用DSM1905和DSM2194处理这些废弃物。监测脂质和脂肪酸含量、生物量及pH值的变化。
结果
分别从R1和R2石油废弃物中产生了约18.4%和20.1%的γ-亚麻酸（GLA）。它还从F2和F3废弃物中产生了9.3%和12.4%的亚麻酸盐。从R1中产生了21%的GLA，从F3中产生了9.3%的亚麻酸盐。将生物需氧量（BOD）和化学需氧量（COD）分别降低了67%-74%和50%-98%。将BOD降低了36%-74%，将COD降低了10%-78%。
结论
本研究强调了产油真菌利用石油废弃物作为碳源来降低废弃物的BOD和COD并生产必需脂肪酸的能力。
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