Study on the production of 6-pentyl-a-pyrone using two methods of fermentation

<p align="justify">The lactone 6-pentyl-a-pyrone has a characteristic coconut aroma and is produced by Tricho-
derma species. A study on the fermentative production
of 6-pentyl-a-pyrone in both surface and submerged
conditions by Trichoderma harzianum was carried out.
Maximum concentrations of 455 mg/l and 167 mg/l
after 96 h and 48 h of fermentation in surface and
submerged conditions, respectively, were obtained
without using any additional recovery operations. The
resultant yields are higher than those previously re-
ported in the literature, which may be attributable to
strain characteristics in combination with the choice of
fermentation conditions employed in the present study.
Enough scope exists for further improvement in the
yields by optimizing the cultural and nutritional para-
meters.</p>