Preparation and characterization of biodegradable nanoparticles based on poly(γ-glutamic acid) with l-phenylalanine as a protein carrier

2005 ◽  
Vol 108 (2-3) ◽  
pp. 226-236 ◽  
Author(s):  
Takami Akagi ◽  
Tatsuo Kaneko ◽  
Toshiyuki Kida ◽  
Mitsuru Akashi
2014 ◽  
Vol 915-916 ◽  
pp. 891-894
Author(s):  
Ge Yang ◽  
Ke Shuai Lu ◽  
Xue Yan Su

The present paper describes the preparation and characterization of novel biodegradable nanoparticles based on self-assembly of poly-γ-glutamic acid (γ-PGA). The nanosystems were stable inaqueous media at low pH conditions. Solubility of the systems was determined by turbidity measurements. Surface charge and mobility were measured electrophoretically. It was found that the size and size distribution of the nanosystems depends on the concentrations of γ-PGA solutions and their ratio as well as on the pH of the mixture and the order of addition. The average hydrodynamic diameters were between 150 and 330 nm. These biodegradable,self-assembling stable nanocomplexes might be useful for several biomedical applications.


Heliyon ◽  
2021 ◽  
pp. e07715
Author(s):  
Punam Thapa ◽  
Alina Thapa ◽  
Sujan Khadka ◽  
Sanjeep Sapkota ◽  
Om Prakash Panta ◽  
...  

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Olalekan A. Balogun-Agbaje ◽  
Olubusola A. Odeniyi ◽  
Michael A. Odeniyi

Abstract Background Poly-γ-glutamic acid (γ-PGA) is a biopolymer of microbial origin, consisting of repeating units of l-glutamic acid and/or D-glutamic acid. The biopolymer has found use in the fields of agriculture, food, wastewater, and medicine, owing to its non-toxic, biodegradable, and biocompatible properties. Due to its biodegradability, γ-PGA is being tipped to dislodge synthetic plastics in drug delivery application. High cost of production, relative to plastics, is however a clog in the wheel of achieving this. Main body of abstract This review looked at the production, nanoparticles fabrication, and drug delivery application of γ-PGA. γ-PGA production optimization by modifying the fermentation medium to tailor towards the production of desirable polymer at reduced cost and techniques for the formulation of γ-PGA nanoparticle as well as its characterization were discussed. This review also evaluated the application of γ-PGA and its nanoparticles in the delivery of drugs to action site. Characterization of γ-PGA and its nanoparticles is a crucial step towards determining the applicability of the biopolymer. γ-PGA has been used in the delivery of active agents to action sites. Conclusion This review highlights some of the efforts that have been made in the appraisal of γ-PGA and its nanoparticles for drug delivery. γ-PGA is a candidate for future extensive use in drug delivery.


2016 ◽  
Vol 140 ◽  
pp. 233-237 ◽  
Author(s):  
Jingyuan Xu ◽  
Elizabeth F. Krietemeyer ◽  
Victoria L. Finkenstadt ◽  
Daniel Solaiman ◽  
Richard D. Ashby ◽  
...  

1989 ◽  
Vol 492 (1-2) ◽  
pp. 237-244 ◽  
Author(s):  
Marie-Francoise Chesselet ◽  
Elaine Robbins

2009 ◽  
Vol 100 (24) ◽  
pp. 6665-6668 ◽  
Author(s):  
Ram Chandra ◽  
Ram Naresh Bharagava ◽  
Vibhuti Rai ◽  
Shio Kumar Singh

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