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Nutritive Value of Fermented Water Hyacinth (Eichornia crassipes) Leaf with Aspergillus niger in Tegal Duck Mangisah, I; Wahyuni, HI; Tristiarti, Tristiarti; Sumarsih, S; Setyaningrum, S
ANIMAL PRODUCTION Vol 12, No 2 (2010): May
Publisher : Universitas Jenderal Soedirman, Faculty of Animal Science, Purwokerto-Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (208.426 KB)

Abstract

Two steps of experiment were conducted to evaluate the proximate composition and nutritive value of fermented water hyacinth leaf (WHL) with Aspergillus niger in Tegal duck.  Twenty two heads of eight-week Tegal ducks with an average body weight of 1202.55 + 111.14 g were used in this experiment.  There were two treatments namely: non-fermented (NFWH) and fermented with Aspergillus niger (FWHAN). Each treatment was replicated 10 times. Data gathered were analyzed using t-student test. The  proximate composition between NFWH and FWHAN showed an increase in crude protein/CP  (11.44 vs 16.09%) and ash (12.76 vs 22.37%) but a decrease in crude fiber/CF (21.51 vs 16.62%) and nitrogen free extract/NFE (53.20 vs 43.59%).  The nutritive value of diet for eight-week Tegal ducks showed that fermentation of WHL with Aspergillus niger significantly increased CP digestibility, true metabolizable energy (TME) and nitrogen retention (NR), but not for CF digestibility.  It could be concluded that fermentation of WHL with Aspergillus niger increases the nutrient quality and the nutritive value of diet for eight-week Tegal ducks in term of CP digestibility, TME and NR. (Animal Production 12(2): 100-104 (2010)Key Words: water hyacinth leaf, fermentation, Aspergillus niger, biological value, Tegal ducks
Production of Cellulase Enzyme from Aspergilus niger using Rice Husk and Bagasse as Inducer Purkan, Purkan; Purnama, HD; Sumarsih, S
Jurnal ILMU DASAR Vol 16 No 2 (2015)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (241.132 KB) | DOI: 10.19184/jid.v16i2.2768

Abstract

Aspergillus niger is fungi can produce cellulase enzyme with agriculture waste as natural inducers. The purpose of this study was to compare the natural inducers potential between rice husk and bagasse to produce cellulase enzyme from Aspergillus niger. Production of cellulase enzyme was done with variety of inducers such as CMC, rice husk, and bagasse. The optimization of enzyme production includes optimum production time, inducer type, and optimum concentration of inducer. Furthermore, the enzyme also was characterized in pH and temperature. Enzyme activity test using the DNS method with CMC as substrate. According of this test result show that highest cellulase enzyme activity has production time for 108 hours with rice husk as inducer. The optimum rice husk concentration was needed of 2.5%. The cellulase enzyme was induced by rice husk has optimum activity at pH 4 and 50°C of 0.709 IU/mL.   Keywords : cellulase enzymes, Aspergillus niger, inducers, rice husk, bagasse.