pH-responsive eco-friendly chitosan modified cenosphere/alginate composite hydrogel beads as carrier for controlled release of Imidacloprid towards sustainable pest control

2021 ◽  
pp. 131215
Author(s):  
Amrita Singh ◽  
Aditya K. Kar ◽  
Divya Singh ◽  
Rahul Verma ◽  
Nikita Shraogi ◽  
...  
Keyword(s):  
Controlled Release ◽  
Pest Control ◽  
Composite Hydrogel ◽  
Ph Responsive ◽  
Hydrogel Beads ◽  
Sustainable Pest Control

scholarly journals Controlled Release Behavior of pH-Responsive Composite Hydrogel Containing Activated Carbon

2009 ◽  
Vol 10 (1) ◽  
pp. 33-37 ◽  
Author(s):  
Ju-Mi Yun ◽  
Ji-Sun Im ◽  
Ae-Ri Oh ◽  
Young-Seak Lee ◽  
Hyung-Il Kim
Keyword(s):  
Activated Carbon ◽  
Controlled Release ◽  
Composite Hydrogel ◽  
Release Behavior ◽  
Ph Responsive

scholarly journals Preparation and application of pH-responsive composite hydrogel beads as potential delivery carrier candidates for controlled release of berberine hydrochloride

2020 ◽  
Vol 7 (11) ◽  
pp. 200676
Author(s):  
Jiande Gao ◽  
Dongying Fan ◽  
Ping Song ◽  
Shudan Zhang ◽  
Xiong Liu
Keyword(s):  
Composite Hydrogel ◽  
Swelling Ratio ◽  
Ph Responsive ◽  
X Ray Diffraction ◽  
Swelling Properties ◽  
Pharmaceutical Dosage Forms ◽  
Berberine Hydrochloride ◽  
X Ray ◽  
Hydrogel Beads ◽  
Cumulative Release

For improving the effective concentration of berberine hydrochloride (BH) in the gastrointestinal tract, a series of pH-responsive hydrogel beads were prepared based on carboxymethylstarch-g-poly (acrylic acid)/palygorskite/starch/sodium alginate (CMS-g-PAA/PGS/ST/SA) in the present work. The developed hydrogel beads were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and thermogravimetric analysis (TG). Effect of palygorskite (PGS) content on the swelling properties of hydrogel beads and BH cumulative release were discussed. The pH responsiveness of hydrogel beads was also investigated in different media. Results illustrated that swelling of hydrogel beads and BH cumulative release from hydrogel beads were obviously affected by PGS content. The swelling ratio and BH cumulative release of composite hydrogel beads remarkably slowed down with PGS content increasing in the range from 10 to 40 wt%. The composite hydrogel beads were pH-responsive. At pH 7.4, the swelling ratio and BH cumulative release from composite hydrogel beads were the fastest among the dissolution media of pH 1.2, pH 6.8 and pH 7.4. The BH cumulative release from hydrogel beads was related to the swelling and relaxation of composite hydrogel beads and could be fitted better by the Higuchi model. The obtained composite hydrogel beads could be potentially used for the development of BH pharmaceutical dosage forms.

scholarly journals pH and redox dual-sensitive drug delivery system constructed based on fluorescent carbon dots

RSC Advances ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 2656-2663
Author(s):  
Boye Zhang ◽  
Qianqian Duan ◽  
Yi Li ◽  
Jianming Wang ◽  
Wendong Zhang ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Controlled Release ◽  
Cancer Cells ◽  
Fluorescence Imaging ◽  
Drug Delivery System ◽  
Delivery System ◽  
Carbon Dots ◽  
Ph Responsive ◽  
Charge Reversal ◽  
Fluorescent Carbon Dots

The system is pH-responsive and redox-controlled release. And the charge reversal and size transitions of the system can enhance the targeted ability. Moreover, the system can recognize the cancer cells by the fluorescence imaging.

Magnetic- and pH-responsive κ-carrageenan/chitosan complexes for controlled release of methotrexate anticancer drug

2017 ◽  
Vol 97 ◽  
pp. 209-217 ◽  
Author(s):  
Gholam Reza Mahdavinia ◽  
Amirabbas Mosallanezhad ◽  
Moslem Soleymani ◽  
Mohammad Sabzi
Keyword(s):  
Controlled Release ◽  
Anticancer Drug ◽  
Ph Responsive

Novel thermo- and pH-responsive hydroxypropyl cellulose- and poly (l-glutamic acid)-based microgels for oral insulin controlled release

2012 ◽  
Vol 89 (4) ◽  
pp. 1207-1214 ◽  
Author(s):  
Yunyan Bai ◽  
Zhe Zhang ◽  
Aiping Zhang ◽  
Li Chen ◽  
Chaoliang He ◽  
...  
Keyword(s):  
Controlled Release ◽  
Glutamic Acid ◽  
Hydroxypropyl Cellulose ◽  
Oral Insulin ◽  
Ph Responsive
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