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פותח על ידי קלירמאש פתרונות בע"מ -
Effect of hydrolysing and oxidizing agents on the composition and degradation of wheat straw monosaccharides
Year:
1982
Authors :
בן גדליה, דניאל
;
.
מירון, יהושע
;
.
Volume :
15
Co-Authors:
Miron, J., Institute of Animal Science, Agricultural Research Organization, The Volcani Center, P.O. Box 6, Bet Dagan, 50250, Israel
Ben-Ghedalia, D., Institute of Animal Science, Agricultural Research Organization, The Volcani Center, P.O. Box 6, Bet Dagan, 50250, Israel
Facilitators :
From page:
83
To page:
87
(
Total pages:
5
)
Abstract:
Wheat straw (WS) was treated with 5% sodium hydroxide, ozone and 5% sulfur dioxide at 70°C for 72 h, and the effect of treatments on monosaccharide composition and in vitro degradability by rumen microorganisms was studied. The major sugars, glucose and xylose, comprising about 90% of the total monosaccharides in the untreated WS were mainly confined to the cell walls. SO2 exerted the greatest solubilizing effect, followed by ozone and NaOH; the respective values for the solubilized cell wall polysaccharides were: 26, 12 and 4.4%. One third of the total phenolics was oxidized by ozone, whereas, SO2 exerted mostly a solubilizing effect on this fraction, converting 75% of it into soluble phenolics. In the NaOH treated WS 41% of the total phenolics were soluble, as compared to 22% in the untreated. The in vitro digestibility of monosaccharides in the untreated WS were initially high: 50% and 58% for xylose and glucose, respectively and 63% to 80% for the minor sugars. The SO2 treatment resulted in an overall increase in digestibility of monosaccharides with values lying in the range of 90%. Sodium hydroxide was more efficient than ozone in enhancing the degradability of xylan and total sugars. The digestibility of cell wall sugars was increased from 52.4% to 84.4%, 63.4% and 72.3% by SO2, O3 and NaOH treatments respectively. Based on the present findings, it appears that wheat straw cell wall components are more sensitive to hydrolytic than to oxidative processes aimed at increasing its degradability by rumen microorganisms. SO2 exerted on WS a multi-effect which was particularly suitable for increasing the digestibility of monosaccharides. © 1982 Springer-Verlag.
Note:
Related Files :
עוד תגיות
תוכן קשור
More details
DOI :
10.1007/BF00499511
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
29740
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:49
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Scientific Publication
Effect of hydrolysing and oxidizing agents on the composition and degradation of wheat straw monosaccharides
15
Miron, J., Institute of Animal Science, Agricultural Research Organization, The Volcani Center, P.O. Box 6, Bet Dagan, 50250, Israel
Ben-Ghedalia, D., Institute of Animal Science, Agricultural Research Organization, The Volcani Center, P.O. Box 6, Bet Dagan, 50250, Israel
Effect of hydrolysing and oxidizing agents on the composition and degradation of wheat straw monosaccharides
Wheat straw (WS) was treated with 5% sodium hydroxide, ozone and 5% sulfur dioxide at 70°C for 72 h, and the effect of treatments on monosaccharide composition and in vitro degradability by rumen microorganisms was studied. The major sugars, glucose and xylose, comprising about 90% of the total monosaccharides in the untreated WS were mainly confined to the cell walls. SO2 exerted the greatest solubilizing effect, followed by ozone and NaOH; the respective values for the solubilized cell wall polysaccharides were: 26, 12 and 4.4%. One third of the total phenolics was oxidized by ozone, whereas, SO2 exerted mostly a solubilizing effect on this fraction, converting 75% of it into soluble phenolics. In the NaOH treated WS 41% of the total phenolics were soluble, as compared to 22% in the untreated. The in vitro digestibility of monosaccharides in the untreated WS were initially high: 50% and 58% for xylose and glucose, respectively and 63% to 80% for the minor sugars. The SO2 treatment resulted in an overall increase in digestibility of monosaccharides with values lying in the range of 90%. Sodium hydroxide was more efficient than ozone in enhancing the degradability of xylan and total sugars. The digestibility of cell wall sugars was increased from 52.4% to 84.4%, 63.4% and 72.3% by SO2, O3 and NaOH treatments respectively. Based on the present findings, it appears that wheat straw cell wall components are more sensitive to hydrolytic than to oxidative processes aimed at increasing its degradability by rumen microorganisms. SO2 exerted on WS a multi-effect which was particularly suitable for increasing the digestibility of monosaccharides. © 1982 Springer-Verlag.
Scientific Publication
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