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Effect of ligninolytic axenic and coculture white-rot fungi on rice straw chemical composition and in vitro fermentation characteristics
The study sought to investigate the potentials of axenic cultures of Pleurotus ostreatus , Phanerochaete chrysosporium and their coculture ( P. chrysosporium and P. ostreatus ) to break down lignin and to enhance the rumen fermentability of rice straw. Rice straw was fermented by two lignin-degradin...
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Published in: | Scientific reports 2022-01, Vol.12 (1), p.1129-1129, Article 1129 |
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Main Authors: | , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | The study sought to investigate the potentials of axenic cultures of
Pleurotus ostreatus
,
Phanerochaete chrysosporium
and their coculture (
P. chrysosporium
and
P. ostreatus
) to break down lignin and to enhance the rumen fermentability of rice straw. Rice straw was fermented by two lignin-degrading fungi, namely,
P. ostreatus
,
P
.
chrysosporium
and its coculture (
P
.
ostreatus
and
P
.
chrysosporium
) with uninoculated straw as control under solid-state fermentation employing a completely randomized research design. The coculture exhibited a mutual intermingling plus inhibition interaction. The fungi treatment increased the crude protein from (5.1%) in the control to (6.5%, 6.6%, and 6.7%) in the
P
.
ostreatus
,
P
.
chrysosporium
and coculture respectively. The coculture treated straw had a lower lignin content (5.3%) compared to the
P
.
chrysosporium
(6.2%) with the
P
.
ostreatus
recording the least (3.3%) lignin fraction. Treatment of rice straw with coculture improved the in vitro dry matter digestibility (68.1%), total volatile fatty acids (35.3 mM), and total gas (57.4 ml/200 mg) compared to
P
.
chrysosporium
(45.1%, 32.2 mM, 44.4 ml/200 mg) but was second to
P
.
ostreatus
(75.3%, 38.3 mM, 65.6 ml/200 mg). Instead of an anticipated synergistic effect from the coculture, a competitive antagonistic effect was rather observed at the end of the study, a condition that can be attributed to the coculture behavior. |
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ISSN: | 2045-2322 2045-2322 |
DOI: | 10.1038/s41598-022-05107-z |