AN INVESTIGATION INTO THE GROWTH OF CANDIDA OBTUSA IN LIQUID PINEAPPLE WASTE

SUHAIMI, M., WEBB, B.H. and SUTANTO, J.B.

SUMMARY

An aerobic fermentation of liquid pineapple waste using Candida obtusa as the growing organism was carried out. In the continuous culture, aeration and dilution rates were varied. The COD concentration, agitation rate and culturing temperature were kept constant. With a COD concentration of about 90 g/l in the influent liquid, it was found that the amount of air supplied was still limiting. Low growth rates and inefficient utilisation of the organic substances present in the liquid waste was thus obtained. The yeast concentration could be increased with aeration rate. With a higher dilution rate, the yeast concentration decreased while the COD concentration increased. The calculated results for these two variables save a more favourable values.

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