Decorating Vitamin B6 Cofactor over Beta-Cyclodextrin Stabilized Silver Nanoparticles through Inclusion Complexation for Fluorescent Turn-On Detection of Hydrazine

2020 ◽  
Vol 3 (10) ◽  
pp. 7021-7028
Author(s):  
Vinita Bhardwaj ◽  
SK Ashok Kumar ◽  
Suban K Sahoo
2020 ◽  
Vol 320 ◽  
pp. 126611 ◽  
Author(s):  
Ashish Yadav ◽  
Yachana Upadhyay ◽  
Rati Kanta Bera ◽  
Suban K. Sahoo

1978 ◽  
Vol 26 (4) ◽  
pp. 1162-1167 ◽  
Author(s):  
KANETO UEKAMA ◽  
FUMITOSHI HIRAYAMA ◽  
MASAKI OTAGIRI ◽  
YOUKO OTAGIRI ◽  
KEN IKEDA

Author(s):  
KAHTAN J HASSON ◽  
ESRAA G JABAR ◽  
IHAB I ALKHALIFA

Objective: Bisacodyl is a laxative drug used in the treatment of constipation, it is soluble in mineral acids, but it is practically insoluble in water. Therefore, it is very hard task to dissolve bisacodyl in alkaline medium so the objective of this study was the development of proper dissolution method for a new formulation of bisacodyl suppositories in a medium simulated to rectal region. Obviously, most of the bisacodyl suppositories preparation products will yield low percentages of dissolution in the alkaline medium of phosphate buffer pH 7.2. Methods: Preparation inclusion complex of bisacodyl with the solubilizing agent beta-cyclodextrin then incorporated in a suppository base. The quantitative analysis of bisacodyl in suppositories was carried by a developed and validated high-performance liquid chromatography method. Results and Discussion: The dissolution rates for the innovated formulation of bisacodyl complexed with beta-cyclodextrin suppositories were in average of 97.5% and the stored suppositories of this formulation maintained their specified physical and chemical properties along the real stability study. Conclusion: The application of the inclusion complexation technique of bisacodyl with beta-cyclodextrin in the production of suppositories enhances the dissolution rate and improves the stability of suppositories performance.


2010 ◽  
Vol 981 (1-3) ◽  
pp. 194-203 ◽  
Author(s):  
Wei Li ◽  
Bitai Lu ◽  
Aiguo Sheng ◽  
Feng Yang ◽  
Zhendong Wang

RSC Advances ◽  
2016 ◽  
Vol 6 (59) ◽  
pp. 53800-53803 ◽  
Author(s):  
Dan Sun ◽  
Guohua Qi ◽  
Shuping Xu ◽  
Weiqing Xu

A facile, highly sensitive “turn on” SERS nanosensor for the detection of glucose in urine has been developed based on the aggregation of the 4-mercaptophenylboronic acid decorated silver nanoparticles in the specific bonding to glucose.


Author(s):  
Khanittha Kerdpol ◽  
Jintawee Kicuntod ◽  
Peter Wolschann ◽  
Seiji Mori ◽  
Chompoonut Rungnim ◽  
...  

2-Hydroxypropyl-β-cyclodextrin (HPβCD) has unique properties to enhance the stability and the solubility of low water-soluble compounds by inclusion complexation. Understanding of the structural properties of HPβCD and its derivatives based on the number of 2-hydroxypropyl (HP) substituents at the a-D-glucopyranose subunits is rather important. In this work, replica exchange molecular dynamics simulations were performed to investigate the conformational changes of single- and double-sided HP-substitution called as 6-HPβCDs and 2,6-HPβCDs, respectively. The results show that glucose subunits in both 6-HPβCDs and 2,6-HPβCDs have lower chance to flip than in βCD. Also, HP groups are occasionally blocking the hydrophobic cavity of HPβCDs, thus hindering the drug inclusion. We found that HPβCDs with high number of HP-substitutions are more likely to be blocked, while HPβCDs with double-sided HP-substitution are even more probable to be blocked. Overall, 6-HPβCDs with three and four HP-substitutions are highlighted as the most suitable structures for guest encapsulation based on our conformational analyses such as structural distortion, radius of gyration, circularity and cavity self-closure of the HPβCDs.


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