Degradation of porphyran from Porphyra haitanensis and the antioxidant activities of the degraded porphyrans with different molecular weight
文献类型：期刊论文
| 作者 | Zhao, TT; Zhang, QB; Qi, HM; Zhang, H ; Niu, XZ; Xu, ZH; Li, Z
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| 刊名 | INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
 |
| 出版日期 | 2006-02-28 |
| 卷号 | 38期号:1页码:45-50 |
| 关键词 | Porphyra Haitanensis Porphyran Degradation Ascorbate Hydrogen Peroxide (H2o2) Antioxidant Activities |
| ISSN号 | 0141-8130 |
| DOI | 10.1016/j.ijbiomac.2005.12.018 |
| 文献子类 | Article |
| 英文摘要 | In the present paper, ascorbate and hydrogen peroxide (H2O2) were used to degrade porphyran. It was found that porphyran could be degraded by free radical that was generated by ascorbate and H2O2 in combination. It was possible to prepare desired porphyran products with different molecular weight by adjusting ascorbate to H,02 proportions and their concentrations. The molar ratio of I was demonstrated more effective than in other ratios. Higher concentrations accelerated the degradation. Moreover, results of chemical analysis and FT-IR spectra suggested that the main structure of degraded products still remained although some changes happened. The degraded and natural porphyrans possessed scavenging 1,1-diphenyl-2-picrylhydrazyl (DPPH)-radical activity and reducing power. Higher antioxidant activities were found in both systems when the molecular weight was reduced. The results indicated that the antioxidant activities were closely related to the molecular weight. The degraded porphyrans are potential antioxidant in vitro. (c) 2006 Elsevier B.V. All rights reserved.; In the present paper, ascorbate and hydrogen peroxide (H2O2) were used to degrade porphyran. It was found that porphyran could be degraded by free radical that was generated by ascorbate and H2O2 in combination. It was possible to prepare desired porphyran products with different molecular weight by adjusting ascorbate to H,02 proportions and their concentrations. The molar ratio of I was demonstrated more effective than in other ratios. Higher concentrations accelerated the degradation. Moreover, results of chemical analysis and FT-IR spectra suggested that the main structure of degraded products still remained although some changes happened. The degraded and natural porphyrans possessed scavenging 1,1-diphenyl-2-picrylhydrazyl (DPPH)-radical activity and reducing power. Higher antioxidant activities were found in both systems when the molecular weight was reduced. The results indicated that the antioxidant activities were closely related to the molecular weight. The degraded porphyrans are potential antioxidant in vitro. (c) 2006 Elsevier B.V. All rights reserved. |
| 学科主题 | Biochemistry & Molecular Biology |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000236505600007 |
| 公开日期 | 2010-12-24 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/6177]  |
| 专题 | 海洋研究所_海洋生物技术研发中心 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, TT,Zhang, QB,Qi, HM,et al. Degradation of porphyran from Porphyra haitanensis and the antioxidant activities of the degraded porphyrans with different molecular weight[J]. INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES,2006,38(1):45-50. |
| APA | Zhao, TT.,Zhang, QB.,Qi, HM.,Zhang, H.,Niu, XZ.,...&Li, Z.(2006).Degradation of porphyran from Porphyra haitanensis and the antioxidant activities of the degraded porphyrans with different molecular weight.INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES,38(1),45-50. |
| MLA | Zhao, TT,et al."Degradation of porphyran from Porphyra haitanensis and the antioxidant activities of the degraded porphyrans with different molecular weight".INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES 38.1(2006):45-50. |
入库方式： OAI收割
来源：海洋研究所
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