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Kinetics and mechanism of degradation of chitosan by combining sonolysis with HO/ascorbic acid
This study demonstrated the combined use of sonolysis with the H 2 O 2 /ascorbic acid (Vc) redox reaction to degrade chitosan (CS). The influence of operating parameters, such as the initial CS concentration (1-15 mg mL −1 ), the input power level (15-45% of the total input power), the H 2 O 2 and V...
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| Published in: | RSC advances 2016-08, Vol.6 (8), p.7628-76287 |
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| container_end_page | 76287 |
| container_issue | 8 |
| container_start_page | 7628 |
| container_title | RSC advances |
| container_volume | 6 |
| creator | Wu, Tiantian Wu, Chunhua Xiang, Yingchun Huang, Jiaqi Luan, Lanlan Chen, Shiguo Hu, Yaqin |
| description | This study demonstrated the combined use of sonolysis with the H
2
O
2
/ascorbic acid (Vc) redox reaction to degrade chitosan (CS). The influence of operating parameters, such as the initial CS concentration (1-15 mg mL
−1
), the input power level (15-45% of the total input power), the H
2
O
2
and Vc concentration (10-70 mM) and the pH (3.0-5.0) of the reaction solution, on the molecular weight and degradation kinetics of CS were investigated and optimized. Based on the degradation kinetics, a synergetic effect of sonolysis with H
2
O
2
and Vc on the degradation of CS was observed. Structural analysis by FT-IR and
1
H and
13
C NMR indicated no significant difference between the chemical structure of chitosan before and after degradation. Moreover, intermolecular hydrogen bonds were broken, and the crystallinity of degraded chitosan decreased. Using the above analysis, CS degradation by the combination of sonolysis with the H
2
O
2
/Vc redox reaction was proposed to be due to mechanical effects along with HO&z.rad; attack on the β-1,4-glucoside linkages of glucosamine units. These results suggest that the sonolysis/H
2
O
2
/Vc combined technique is promisingly suitable for large-scale manufacture of chitooligosaccharide.
This study demonstrated the combined use of sonolysis with the H
2
O
2
/ascorbic acid (Vc) redox reaction to degrade chitosan (CS). |
| doi_str_mv | 10.1039/c6ra11197a |
| format | article |
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2
O
2
/ascorbic acid (Vc) redox reaction to degrade chitosan (CS). The influence of operating parameters, such as the initial CS concentration (1-15 mg mL
−1
), the input power level (15-45% of the total input power), the H
2
O
2
and Vc concentration (10-70 mM) and the pH (3.0-5.0) of the reaction solution, on the molecular weight and degradation kinetics of CS were investigated and optimized. Based on the degradation kinetics, a synergetic effect of sonolysis with H
2
O
2
and Vc on the degradation of CS was observed. Structural analysis by FT-IR and
1
H and
13
C NMR indicated no significant difference between the chemical structure of chitosan before and after degradation. Moreover, intermolecular hydrogen bonds were broken, and the crystallinity of degraded chitosan decreased. Using the above analysis, CS degradation by the combination of sonolysis with the H
2
O
2
/Vc redox reaction was proposed to be due to mechanical effects along with HO&z.rad; attack on the β-1,4-glucoside linkages of glucosamine units. These results suggest that the sonolysis/H
2
O
2
/Vc combined technique is promisingly suitable for large-scale manufacture of chitooligosaccharide.
This study demonstrated the combined use of sonolysis with the H
2
O
2
/ascorbic acid (Vc) redox reaction to degrade chitosan (CS).</description><identifier>EISSN: 2046-2069</identifier><identifier>DOI: 10.1039/c6ra11197a</identifier><ispartof>RSC advances, 2016-08, Vol.6 (8), p.7628-76287</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27923,27924</link.rule.ids></links><search><creatorcontrib>Wu, Tiantian</creatorcontrib><creatorcontrib>Wu, Chunhua</creatorcontrib><creatorcontrib>Xiang, Yingchun</creatorcontrib><creatorcontrib>Huang, Jiaqi</creatorcontrib><creatorcontrib>Luan, Lanlan</creatorcontrib><creatorcontrib>Chen, Shiguo</creatorcontrib><creatorcontrib>Hu, Yaqin</creatorcontrib><title>Kinetics and mechanism of degradation of chitosan by combining sonolysis with HO/ascorbic acid</title><title>RSC advances</title><description>This study demonstrated the combined use of sonolysis with the H
2
O
2
/ascorbic acid (Vc) redox reaction to degrade chitosan (CS). The influence of operating parameters, such as the initial CS concentration (1-15 mg mL
−1
), the input power level (15-45% of the total input power), the H
2
O
2
and Vc concentration (10-70 mM) and the pH (3.0-5.0) of the reaction solution, on the molecular weight and degradation kinetics of CS were investigated and optimized. Based on the degradation kinetics, a synergetic effect of sonolysis with H
2
O
2
and Vc on the degradation of CS was observed. Structural analysis by FT-IR and
1
H and
13
C NMR indicated no significant difference between the chemical structure of chitosan before and after degradation. Moreover, intermolecular hydrogen bonds were broken, and the crystallinity of degraded chitosan decreased. Using the above analysis, CS degradation by the combination of sonolysis with the H
2
O
2
/Vc redox reaction was proposed to be due to mechanical effects along with HO&z.rad; attack on the β-1,4-glucoside linkages of glucosamine units. These results suggest that the sonolysis/H
2
O
2
/Vc combined technique is promisingly suitable for large-scale manufacture of chitooligosaccharide.
This study demonstrated the combined use of sonolysis with the H
2
O
2
/ascorbic acid (Vc) redox reaction to degrade chitosan (CS).</description><issn>2046-2069</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><sourceid/><recordid>eNqFjrEKwkAQBQ9BUDSNvbA_EHOX6ElqUQQLG2vDZhPNirmT24Dk71UQLH3NMEzzlJoZvTA6yxOyAY0x-RoHapzqpY1TbfORikRu-j27Mqk1Y3U-sKs7JgF0FbQ1NehYWvAXqOprwAo79u6j1HDnBR2UPZBvS3bsriDe-XsvLPDkroH9MUEhH0omQOJqqoYXvEsdfTlR8932tNnHQah4BG4x9MXva_avvwDim0TZ</recordid><startdate>20160812</startdate><enddate>20160812</enddate><creator>Wu, Tiantian</creator><creator>Wu, Chunhua</creator><creator>Xiang, Yingchun</creator><creator>Huang, Jiaqi</creator><creator>Luan, Lanlan</creator><creator>Chen, Shiguo</creator><creator>Hu, Yaqin</creator><scope/></search><sort><creationdate>20160812</creationdate><title>Kinetics and mechanism of degradation of chitosan by combining sonolysis with HO/ascorbic acid</title><author>Wu, Tiantian ; Wu, Chunhua ; Xiang, Yingchun ; Huang, Jiaqi ; Luan, Lanlan ; Chen, Shiguo ; Hu, Yaqin</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-rsc_primary_c6ra11197a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><creationdate>2016</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wu, Tiantian</creatorcontrib><creatorcontrib>Wu, Chunhua</creatorcontrib><creatorcontrib>Xiang, Yingchun</creatorcontrib><creatorcontrib>Huang, Jiaqi</creatorcontrib><creatorcontrib>Luan, Lanlan</creatorcontrib><creatorcontrib>Chen, Shiguo</creatorcontrib><creatorcontrib>Hu, Yaqin</creatorcontrib><jtitle>RSC advances</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wu, Tiantian</au><au>Wu, Chunhua</au><au>Xiang, Yingchun</au><au>Huang, Jiaqi</au><au>Luan, Lanlan</au><au>Chen, Shiguo</au><au>Hu, Yaqin</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Kinetics and mechanism of degradation of chitosan by combining sonolysis with HO/ascorbic acid</atitle><jtitle>RSC advances</jtitle><date>2016-08-12</date><risdate>2016</risdate><volume>6</volume><issue>8</issue><spage>7628</spage><epage>76287</epage><pages>7628-76287</pages><eissn>2046-2069</eissn><abstract>This study demonstrated the combined use of sonolysis with the H
2
O
2
/ascorbic acid (Vc) redox reaction to degrade chitosan (CS). The influence of operating parameters, such as the initial CS concentration (1-15 mg mL
−1
), the input power level (15-45% of the total input power), the H
2
O
2
and Vc concentration (10-70 mM) and the pH (3.0-5.0) of the reaction solution, on the molecular weight and degradation kinetics of CS were investigated and optimized. Based on the degradation kinetics, a synergetic effect of sonolysis with H
2
O
2
and Vc on the degradation of CS was observed. Structural analysis by FT-IR and
1
H and
13
C NMR indicated no significant difference between the chemical structure of chitosan before and after degradation. Moreover, intermolecular hydrogen bonds were broken, and the crystallinity of degraded chitosan decreased. Using the above analysis, CS degradation by the combination of sonolysis with the H
2
O
2
/Vc redox reaction was proposed to be due to mechanical effects along with HO&z.rad; attack on the β-1,4-glucoside linkages of glucosamine units. These results suggest that the sonolysis/H
2
O
2
/Vc combined technique is promisingly suitable for large-scale manufacture of chitooligosaccharide.
This study demonstrated the combined use of sonolysis with the H
2
O
2
/ascorbic acid (Vc) redox reaction to degrade chitosan (CS).</abstract><doi>10.1039/c6ra11197a</doi><tpages>8</tpages></addata></record> |
| fulltext | fulltext |
| identifier | EISSN: 2046-2069 |
| ispartof | RSC advances, 2016-08, Vol.6 (8), p.7628-76287 |
| issn | 2046-2069 |
| language | |
| recordid | cdi_rsc_primary_c6ra11197a |
| source | Royal Society of Chemistry:Jisc Collections:Royal Society of Chemistry Read and Publish 2022-2024 (reading list) |
| title | Kinetics and mechanism of degradation of chitosan by combining sonolysis with HO/ascorbic acid |
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