Method for producing bioethanol from dates

Abstract

The method for producing bioethanol from dates includes manufacturing a suitable substrate for bioethanol from dates and fermenting the date substrate to produce bioethanol. The date substrate may be produced by de-pitting date fruits, heating the flesh with water to produce a mixture, filter pressing the mixture to produce a juice, and concentrated by vacuum drying to produce a date substrate. The date substrate may then be fermented in either a batch or a fed-batch culture. The fermentation may be performed with a thermophilic yeast, such K. marxianus . In an alternative embodiment the date substrate may be a date fruit extract.

1 - 19 . (canceled) 
     
     
         20 . A bioethanol produced from dates, comprising: e
 a fermented date substrate, wherein the substrate is obtained by:
 de-pitting date fruits to produce date fruit flesh; 
 heating the date fruit flesh with water to produce a mixture; 
 filter pressing the mixture to produce a juice; 
 concentrating the juice to produce a date substrate, wherein the date substrate used for the fermentation has a starting sugar concentration ranging from 20% to 25%; and 
 fermenting the date substrate with yeast at between 30° C.-40° C. for 32 hours, wherein the yeast is selected from the group consisting of  S. cerevisiae  and  S. cerevisiae  NCYC 431, to produce a 11.2-11.8% w/v bioethanol concentration.