کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7783252 | 1500570 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The combination between cations and sulfated polysaccharide from abalone gonad (Haliotis discus hannai Ino)
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کلمات کلیدی
MWCOAGPλmaxMaximum absorption wavelengthMolecular interaction - تعامل مولکولیConformation - سازگاریFTIR - طیف سنج مادون قرمزFourier transform infrared spectroscopy - طیف سنجی مادون قرمز تبدیل فوریه یا طیف سنجی FTIRSEM - مدل معادلات ساختاری / میکروسکوپ الکترونی روبشیscanning electron microscope - میکروسکوپ الکترونی اسکنXRD - پراش اشعه ایکسX-ray diffraction - پراش اشعه ایکسCations - کاتیون هاmolecular weight cut-off - کاهش وزن مولکولی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Effects of cations (Na+, K+, Ca2+, Mg2+) on the structure of abalone gonad sulfated polysaccharide (AGSP) were studied by means of Congo red test, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM). The results showed that the local ordered helical conformation was observed in AGSP. The cations could combine with anionic groups in AGSP by ionic bonds, which caused the weakening of electrostatic repulsion and crosslinking of molecular chains. Furthermore, the effects of divalent cations on the conformation were more obvious than that of monovalent cations, and divalent cations led to the aggregation of AGSP due to the more interaction sites. In short, AGSP molecular chains were crosslinked through ionic bonds after adding cations, and, divalent cations could induce the aggregation of AGSP by electrostatic interactions. This study will provide valuable insights for the further research on AGSP conformation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 188, 15 May 2018, Pages 54-59
Journal: Carbohydrate Polymers - Volume 188, 15 May 2018, Pages 54-59
نویسندگان
Yiming Guo, Shuang Cong, Jun Zhao, Yingying Dong, Tingting Li, Beiwei Zhu, Shuang Song, Chengrong Wen,