Search

Your search keyword '"Chong, G.H."' showing total 11 results
Start Over Author "Chong, G.H."
11 results on '"Chong, G.H."'

2. Effect of high pressure processing on the microbiological, physicochemical and enzymatic properties of jackfruit (Artocarpus heterophyllus L.) bulb

Author

Ng, S.K., Tan, T.B., Tan, P.F., Chong, G.H., and Tan, C.P.

Subjects
High pressure processing, Jackfruit, Escherichia coli, Polygalacturonase, Pectin esterase, Texture profile analysis, Nutrition. Foods and food supply, TX341-641, Hospitality industry. Hotels, clubs, restaurants, etc. Food service, TX901-946.5
Published
2018
Full Text
View/download PDF

4. Coating and encapsulation of nanoparticles using supercritical antisolvent

Author

Chong, G.H., Yunus, R., Abdullah, N., Choong, T.S.Y., and Spotar, S.

Subjects
Nanoparticles -- Production processes, Nanoparticles -- Properties, Nanoparticles -- Research, Solvents -- Usage, Science and technology
Abstract

Problem statement: Literature on the production of nanoparticles using supercritical fluids is substantial, but comparatively much less for nanoencapsulation. Approach: In this study, a modified Supercritical Anti Solvent (SAS) apparatus was fabricated for use in the production of nanoparticles using carbon dioxide as the supercritical fluid (SCF). SAS technique involves precipitation of solids from liquid solution under supercritical antisolvent-induced condition. Production of nanoparticles using SAS was investigated using 2 types of model solutes: Fume silica and acetaminophen which represent a model of water insoluble (inorganic) material and water soluble material respectively. The morphology and characteristics of nanoparticles produced were assessed. Results: The fume silica had been coated and 50 nm diameter of nanoencapsulated acetaminophen had been produced. Conclusion: The results had revealed that both water insoluble and soluble substrates can be coated and encapsulated successfully in polymer by the SAS coating process. Key words: Coating, encapsulation, supercritical anti solvent, water insoluble material, water soluble material, INTRODUCTION The interest in preparation and application of nanometer size materials is increasing since they exhibit properties of great industrial interest. During the past 2 decades, a number of SCF [...]

Published
2009

9. Stability of andrographolide in andrographis paniculata under selected storage conditions.

Author

Ibrahim, M.N., Chong , G.H., Ibrahim, M.N., and Chong , G.H.

Abstract

Fresh Andrographis paniculata was dried by a thin layer drying technique using hot air at a temperature of 55 °C and velocity of 1.0 m/s. The dried sample was then ground and kept in air-tight glass bottles at three sel ected storage conditions (5±2°C; 25±2°C with 60%±5% RH; 30±2°C with(60%±5%RH) for three months period. The contents of the active compound andrographolide present in the dried Andrographis paniculata at the beginning and at the end of each month during the storage period were determined by using the HPLC. It was found that there was no significant reduction of the active compound andrographolide for all of the selected storage conditions. Storage at ambient conditions (30±2°C, 60±5% RH) was also able to maintain andrographolide content in Andrographis paniculata during the three months period. This would enhance the production and supply of Andrographis paniculata as raw material with ease, without requiring the use of cooling equipment for storage purpose.

Published
2008

Catalog

Books, media, physical & digital resources
See catalog results