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The effect of fermentor temperatures and moisture content of substrate on the nutritive value of fermented palm oil sludge Sinurat, A.P.; Purwadaria, T.; Rosida, J.; Surachman, H.; Hamid, H.; Kompiang, P.
Indonesian Journal of Animal and Veterinary Sciences Vol 3, No 4 (1998)
Publisher : Indonesian Animal Sciences Society

A series of experiment was designed in order to improve the nutritive value of palm oil sludge (POS) through fermentation. POS was fermented in a fermentor chamber with different temperatures (28 and 32oC) and initial moisture content of the substrate (50,55 and 60%). The nutrient content (crude protein, true protein, in vitro- dry matter and protein digestibility and crude fibre) of the fermented products were evaluated at different stages of the fermentation, i.e.: before incubated (F0), 3 d after aerobic incubation (F3) and 2 d anaerobic incubation after F3 (EN). Cellulase and mannanase activity of the EN products were also measured before and after dried at 60oC. Fermentation at 32oC produced better product (higher nutritive values), although the in vitro dry matter digestibility was not affected by the temperatures. All parameters measured were not significantly influenced by the initial moisture content of the substrate. The nutritive value of unincubated POS (F0) was significantly poorer than the F3 and EN and there was no different in nutrient value between F3 and EN. Soluble nitrogen and in vitro dry matter digestibility were not significantly affected by the stages of the fermentation. Mannanase activity in the EN product was significantly higher when the fermentation was performed at 32oC than those at 28oC and the enzyme activity was reduced after dried (320.7 vs 201.8 U/g DM). The cellulase activity of the fresh/wet fermented product produced at 28oC was significantly higher than those produced at 32oC, but the reverse was occurred in the dry products. It is concluded that fermentation process of palm oil sludge at 32oC and initial moisture content of 50-60% produced better (in vitro) nutritive value. Key words: Palm oil sludge, fermentation, nutritive value

Improving the nutritive value of palm oil sludge by fermentation : The effect of fungi strain, environmental temperature and enzymatic process Pasaribu, T.; Sinurat, A.P.; Purwadaria, T.; ., Supriyati; Rosida, J.; Hamid, H.
Indonesian Journal of Animal and Veterinary Sciences Vol 3, No 4 (1998)
Publisher : Indonesian Animal Sciences Society

An experiment was conducted to improve the nutritive value of palm oil sludge (POS) by fermentation process. Aspergillus niger BPT and NRRL 337 were used into fermenting POS for three days and followed by anaerobic enzymatic process. The experiment was arranged in 2x3 factorial design i.e., enzymatic incubation time (2, 3, and 4 days) and environmental temperature during enzymatic process (room temperature and 40Â°C). Changes on chemical compositions (crude protein, true protein, ADF and NDF), in vitro dry matter digestibility (IVDMD) and protein digestibility (IVPD) were measured. The results showed that both A. niger BPT and NRRL 337 grew well on POS media with the best result at 3 days. The fermentation process by both strains increased crude protein and true protein of POS. The A. niger NRRL reduced the fiber content (ADF and NDF) more than A. niger BPT the IVDMD and IVPD were not significantly affected by fermentation process without enzymatic process. The IVDMD increased significantly when the fermentation followed by enzymatic process. Overall results showed that the best fermentation of POS was obtained by using A. niger NRRL followed by enzymatic process in room temperature for two days. Key words : Palm oil sludge, fermentation, nutritive value

Improving the nutritive value of palm oil sludge by fermentation : The effect of fungi strain, environmental temperature and enzymatic process T. Pasaribu; A.P. Sinurat; T. Purwadaria; Supriyati .; J. Rosida; H. Hamid
Jurnal Ilmu Ternak dan Veteriner Vol 3, No 4 (1998)
Publisher : Indonesian Center for Animal Research and Development (ICARD)

An experiment was conducted to improve the nutritive value of palm oil sludge (POS) by fermentation process. Aspergillus niger BPT and NRRL 337 were used into fermenting POS for three days and followed by anaerobic enzymatic process. The experiment was arranged in 2x3 factorial design i.e., enzymatic incubation time (2, 3, and 4 days) and environmental temperature during enzymatic process (room temperature and 40°C). Changes on chemical compositions (crude protein, true protein, ADF and NDF), in vitro dry matter digestibility (IVDMD) and protein digestibility (IVPD) were measured. The results showed that both A. niger BPT and NRRL 337 grew well on POS media with the best result at 3 days. The fermentation process by both strains increased crude protein and true protein of POS. The A. niger NRRL reduced the fiber content (ADF and NDF) more than A. niger BPT the IVDMD and IVPD were not significantly affected by fermentation process without enzymatic process. The IVDMD increased significantly when the fermentation followed by enzymatic process. Overall results showed that the best fermentation of POS was obtained by using A. niger NRRL followed by enzymatic process in room temperature for two days. Key words : Palm oil sludge, fermentation, nutritive value

The effect of fermentor temperatures and moisture content of substrate on the nutritive value of fermented palm oil sludge A.P. Sinurat; T. Purwadaria; J. Rosida; H. Surachman; H. Hamid; P. Kompiang
Jurnal Ilmu Ternak dan Veteriner Vol 3, No 4 (1998)
Publisher : Indonesian Center for Animal Research and Development (ICARD)

A series of experiment was designed in order to improve the nutritive value of palm oil sludge (POS) through fermentation. POS was fermented in a fermentor chamber with different temperatures (28 and 32oC) and initial moisture content of the substrate (50,55 and 60%). The nutrient content (crude protein, true protein, in vitro- dry matter and protein digestibility and crude fibre) of the fermented products were evaluated at different stages of the fermentation, i.e.: before incubated (F0), 3 d after aerobic incubation (F3) and 2 d anaerobic incubation after F3 (EN). Cellulase and mannanase activity of the EN products were also measured before and after dried at 60oC. Fermentation at 32oC produced better product (higher nutritive values), although the in vitro dry matter digestibility was not affected by the temperatures. All parameters measured were not significantly influenced by the initial moisture content of the substrate. The nutritive value of unincubated POS (F0) was significantly poorer than the F3 and EN and there was no different in nutrient value between F3 and EN. Soluble nitrogen and in vitro dry matter digestibility were not significantly affected by the stages of the fermentation. Mannanase activity in the EN product was significantly higher when the fermentation was performed at 32oC than those at 28oC and the enzyme activity was reduced after dried (320.7 vs 201.8 U/g DM). The cellulase activity of the fresh/wet fermented product produced at 28oC was significantly higher than those produced at 32oC, but the reverse was occurred in the dry products. It is concluded that fermentation process of palm oil sludge at 32oC and initial moisture content of 50-60% produced better (in vitro) nutritive value. Key words: Palm oil sludge, fermentation, nutritive value

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