Enhanced sophorolipid production by feeding-rate-controlled fed-batch culture
- Resource Type
- Article
- Authors
- Kim, Young-Bum; Yun, Hyun Shik; Kim, Eun-Ki
- Source
- Bioresource Technology. Dec2009, Vol. 100 Issue 23, p6028-6032. 5p.
- Subject
- *LIPIDS
*BATCH processing
*FUNGAL cultures
*FEEDSTOCK
*RAPESEED oil
*GLUCOSE
*CANDIDA
*PH effect
- Language
- ISSN
- 0960-8524
Abstract: To develop the easier control method for fed-batch culture of sophorolipid production, we chose rapeseed oil as the most productive oil and compared their productivities in relation to different concentrations of glucose. The optimal concentration of glucose was 30g/L for sophorolipid production. A fed-batch method was conducted using Candida bombicola ATCC 22214 with rapeseed oil as a secondary substrate. The feeding rate of rapeseed oil was dependent on pH and was calculated by the consumption rate of NaOH and rapeseed oil. The glucose concentration was constantly maintained between 30 and 40g/L. As a result, we have produced a crude sophorolipid up to 365g/L for 8days through a feeding-rate-controlled fed-batch process. [Copyright &y& Elsevier]