Laju Pertumbuhan Jamur Rhizopus sp. pada Tempe Kacang Hijau (Phaseolus radiatus L.)

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Abstract: This  research  was  a  descriptive  study,  which  aims  to  determine  the  rate  of  growth  of  the  fungus Rhizopus  sp.  the  green  bean  tempe.  This  research  was  conducted  by  growing  the  fungus  on  PDA  medium using fungus inoculum of 1 gram of green beans with tempeh  making dilutions, starting from the dilutions 10-2  ,  10-3  and  10-4  are  plated  on  a  petri  dish  of  0.1  mL  and  incubated  for  24  hours.  Variation  of  time  of fermentation used without fermentation (0 h), 12 hours, 24 hours, 36 hours, 48 hours, 60 hours and 72 hours for each serial dilution. The number of fungi indirectly calculated using the count method bowls. The results of  this  study  indicate  that  optimum  growth  is  shown  in  36  hours  fermentation  time  with  the  number  of colonies  on  the  10-2  dilution  of  69  colonies  (6.9  x  103  colonies  /  g)  and  10-3  dilutions  of  the  27  colonies. While the 10-4 dilution only at the time of fermentation 36, 48 and 60 hours of growth of 2 colonies and each colony 1. The longer the fermentation time decreased the amount of mushrooms.
Keywords: The rate of growth, Rhizopus sp, green bean tempe
Penulis: Halifah Pagarra 
Kode Jurnal: jpbiologidd090085

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Jp Biologi dd 2009