caa a22 4500 465824471 CHVBK 20180323112145.0 cr unu---uuuuu 170327e19900801xx s 000 0 eng 10.1007/BF00172553 doi (NATIONALLICENCE)springer-10.1007/BF00172553 The effect of low oxygen uptake rate on the fatty acid profile of the oleaginous yeast Apiotrichum curvatum [Elektronische Daten] [R. Davies, Jane Holdsworth, Sarah Reader] Summary: The effect of limiting the available oxygen on the fatty acid profile of Apiotrichum curvatum ATCC 20509 during growth on sulphuric acid casein whey was studied. At oxygen uptake rates (OUR) lower than 7 mmol O2/l per hour, applied during the oil accumulating phase of the fermentation, a decrease in total unsaturated fatty acids was observed. It was possible to decrease the unsaturated fatty acids (oleate from 55% to 41% and linoleate from 9% to 3%) by limiting the OUR of the culture to <3 mmol O2/l per hour. However at this low OUR, a lower oil coefficient (a measure of the efficiency of lactose substrate conversion to oil) was recorded. Furthermore the fermentation time was increased. An OUR of 5 mmol O2/l per hour appeared to be the limit below which adverse effects on oil yields and increased fermentation times occurred. At this OUR, the accumulated oil contained ≃45% oleate and ≃5% linoleate. These effects were demonstrated in a 20-l air-lift fermentor and confirmed in a scaled down 500-l industrial type bubble column fermentor. Springer-Verlag, 1990 Davies R. Industrial Processing, Department of Scientific and Industrial Research, Biotechnology Group, PO Box 31-310, Lower Hutt, New Zealand aut Holdsworth Jane Industrial Processing, Department of Scientific and Industrial Research, Biotechnology Group, PO Box 31-310, Lower Hutt, New Zealand aut Reader Sarah Industrial Processing, Department of Scientific and Industrial Research, Biotechnology Group, PO Box 31-310, Lower Hutt, New Zealand aut Applied Microbiology and Biotechnology Springer-Verlag 33/5(1990-08-01), 569-573 0175-7598 33:5<569 1990 33 253 https://doi.org/10.1007/BF00172553 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00172553 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Davies R. Industrial Processing, Department of Scientific and Industrial Research, Biotechnology Group, PO Box 31-310, Lower Hutt, New Zealand aut NATIONALLICENCE 700 1- Holdsworth Jane Industrial Processing, Department of Scientific and Industrial Research, Biotechnology Group, PO Box 31-310, Lower Hutt, New Zealand aut NATIONALLICENCE 700 1- Reader Sarah Industrial Processing, Department of Scientific and Industrial Research, Biotechnology Group, PO Box 31-310, Lower Hutt, New Zealand aut NATIONALLICENCE 773 0- Applied Microbiology and Biotechnology Springer-Verlag 33/5(1990-08-01), 569-573 0175-7598 33:5<569 1990 33 253 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer