scholarly journals Preparation and characterization of pH-sensitive calcium carbonate-chlorin e6 nanoparticles for photodynamic therapy

2021 ◽  
Vol 30 (11) ◽  
pp. 904-911
Keyword(s):  
Photodynamic Therapy ◽  
Calcium Carbonate ◽  
Ph Sensitive ◽  
Chlorin E6

In Vitro Characterization of Monoaspartyl Chlorin e6 and Diaspartyl Chlorin e6 for Photodynamic Therapy

1988 ◽  
Vol 80 (5) ◽  
pp. 330-336 ◽  
Author(s):  
W. G. Roberts ◽  
F.-Y. Shiau ◽  
J. S. Nelson ◽  
K. M. Smith ◽  
M. W. Berns
Keyword(s):  
Photodynamic Therapy ◽  
Chlorin E6 ◽  
In Vitro Characterization

scholarly journals Stabilization and Release of Palm Tocotrienol Emulsion Fabricated Using pH-Sensitive Calcium Carbonate

Foods ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 358
Author(s):  
Phui Yee Tan ◽  
Beng Ti Tey ◽  
Eng Seng Chan ◽  
Oi Ming Lai ◽  
Hon Weng Chang ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Droplet Size ◽  
Entrapment Efficiency ◽  
Ph Sensitive ◽  
Emulsion System ◽  
Ph Responsive ◽  
Small Droplet ◽  
Homogenization Time ◽  
Oil In Water ◽  
Ph Range

Calcium carbonate (CaCO3) has been utilized as a pH-responsive component in various products. In this present work, palm tocotrienols-rich fraction (TRF) was successfully entrapped in a self-assembled oil-in-water (O/W) emulsion system by using CaCO3 as the stabilizer. The emulsion droplet size, viscosity and tocotrienols entrapment efficiency (EE) were strongly affected by varying the processing (homogenization speed and time) and formulation (CaCO3 and TRF concentrations) parameters. Our findings indicated that the combination of 5000 rpm homogenization speed, 15 min homogenization time, 0.75% CaCO3 concentration and 2% TRF concentration resulted in a high EE of tocotrienols (92.59–99.16%) and small droplet size (18.83 ± 1.36 µm). The resulting emulsion system readily released the entrapped tocotrienols across the pH range tested (pH 1–9); with relatively the highest release observed at pH 3. The current study presents a potential pH-sensitive emulsion system for the entrapment and delivery of palm tocotrienols.

Development and characterization of active and pH-sensitive films based on psyllium seed gum incorporated with free and microencapsulated mulberry pomace extracts

2021 ◽  
pp. 129333
Author(s):  
Xin Zhang ◽  
Ya Zhao ◽  
Qilong Shi ◽  
Yuexiang Zhang ◽  
Jing Liu ◽  
...  
Keyword(s):  
Ph Sensitive ◽  
Seed Gum
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