کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1384576 1500603 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Silk fibroin organization induced by chitosan in layer-by-layer films: Application as a matrix in a biosensor
ترجمه فارسی عنوان
سازمان fibroin ابریشم در لایه به لایه ناشی از کیتوزان: برنامه به عنوان یک ماتریس در یک بیوسنسور
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی


• High molecular weight Chi modulates the orientation of SF groups (Try and Try).
• Chi and SF LbL films were successfully used as template for phytase immobilization.
• The matrix improved the performance of phytic acid biosensing.

In this paper, we show that chitosan may induce conformation changes in silk fibroin (SF) in layer-by-layer (LbL) films, which were used as matrix for immobilization of the enzyme phytase to detect phytic acid. Three chitosan (CH) samples possessing distinct molecular weights were used to build CH/SF LbL films, and a larger change in conformation from random coils to β-sheets for SF was observed for high molecular weight chitosan (CHH). The CHH/SF LbL films deposited onto interdigitated gold electrodes were coated with a layer of phytase, with which phytic acid could be detected down to 10−9 M using impedance spectroscopy as the principle of detection and treating the data with a multidimensional projection technique. This high sensitivity may be ascribed to the suitability of the CHH/SF matrix, thus indicating that the molecular-level interactions between chitosan and SF may be exploited in other biosensors and biodevices.

Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 155, 2 January 2017, Pages 146–151
نویسندگان
, , , , , , , ,