scholarly journals Formulation and Characterization of Kaffir Lime Oil Nanoemulsion

2017 ◽  
Vol 14 (3) ◽  
pp. 915-922
Author(s):  
Ghea Putri Christy ◽  
Dewa Ayu Arimurni ◽  
Made Dwi Pradipta Wahyudi ◽  
Ronny Martien ◽  
Woro Anindito Sri Tunjung
Keyword(s):  
Essential Oil ◽  
Propylene Glycol ◽  
Tween 80 ◽  
Colloidal Systems ◽  
Spontaneous Emulsification ◽  
Low Viscosity ◽  
Long Term Storage ◽  
Term Storage

ABSTRACT: Kaffir lime oil has many health benefits. However, an obstacle to its commercial use is oxidation during storage. Nanoemulsions (particulate colloidal systems) have been shown to be suitable carriers for lipophilic essential oil constituents due to amphipathic compounds that facilitate solubility. The objectives of this study were to formulate thermodynamically stable kaffir lime oil nanoemulsions and to investigate their physicochemical properties. Air-dried leaves of kaffir lime were subjected to steam distillation to obtain essential oil. Preparation of nanoemulsions was done using the spontaneous emulsification method. Tween 80 and propylene glycol were selected as surfactant mix components. The oil phase consisted of Miglyol 812 as a carrier oil for kaffir lime oil while double-distilled water was used in the aqueous phase. The best formula with transmittance above 95% and highest essential oil content was selected. It contained 20% of Tween 80, 10% of propylene glycol, 1.25% Miglyol 812, and 3.75% kaffir lime essential oil. This formula was then characterized and its thermodynamic stability determined. . The results showed that kaffir lime oil nanoemulsions were thermodynamically stable and robustly withstood variations in temperature, centrifugation, and long-term storage. Additionally, the nanoemulsions had low viscosity, which may facilitate its development as a pharmaceutical compound.

Effects of Tween 80 and Sucrose on Acute Short-Term Stability and Long-Term Storage at −20 C of a Recombinant Hemoglobin

1998 ◽  
Vol 87 (9) ◽  
pp. 1062-1068 ◽  
Author(s):  
Bruce A. Kerwin ◽  
Martin C. Heller ◽  
Steven H. Levin ◽  
Theodore W. Randolph
Keyword(s):  
Tween 80 ◽  
Short Term ◽  
Term Stability ◽  
Long Term Storage ◽  
Term Storage

Characterization of aluminum nanopowders after long-term storage

2014 ◽  
Vol 321 ◽  
pp. 475-480 ◽  
Author(s):  
O.B. Nazarenko ◽  
Yu.A. Amelkovich ◽  
A.I. Sechin
Keyword(s):  
Long Term Storage ◽  
Term Storage

scholarly journals Characterization of Representative Materials in Support of Safe, Long Term Storage of Surplus Plutonium in DOE-STD-3013 Containers

2013 ◽  
Author(s):  
Joshua E. Narlesky ◽  
Mary Ann Stroud ◽  
Paul Herrick Smith ◽  
David M. Wayne ◽  
Richard E. Mason ◽  
...  
Keyword(s):  
Long Term Storage ◽  
Term Storage

scholarly journals Beta-galactosidase in immobilized cells of gherkin Cucumis sativus L.

1998 ◽  
Vol 45 (2) ◽  
pp. 621-626 ◽  
Author(s):  
J Stano ◽  
P Nemec ◽  
L Bezáková ◽  
D Kákoniová ◽  
P Kovács ◽  
...  
Keyword(s):  
Cucumis Sativus ◽  
Immobilized Cells ◽  
Tween 80 ◽  
Ph Optimum ◽  
Cucumis Sativus L ◽  
Long Term Storage ◽  
High Beta ◽  
Beta Galactosidase ◽  
Term Storage

Cell suspensions of gherkin (Cucumis sativus L.) were permeabilized by Tween-80, and immobilized by glutaraldehyde. Beta-galactosidase showed pH optimum at 4.9 and temperature optimum at 58 degrees C. The enzyme catalysed hydrolysis was linear for 3 h with 60-68% conversion of the substrate. The cells characterized by high beta-galactosidase activity and stability on long-term storage showed valuable technological properties.

Characterization of Botrytis spp. from Chilean kiwifruit populations and pre-harvest prediction of risk of grey mould in long-term storage

2018 ◽  
pp. 333-340
Author(s):  
H. García ◽  
M. Lopez ◽  
A. Espinoza ◽  
V. Rojas ◽  
E. Silva-Moreno ◽  
...  
Keyword(s):  
Grey Mould ◽  
Long Term Storage ◽  
Term Storage

scholarly journals Experimental method for the assessment and characterization of hazardous waste for long-term storage

2021 ◽  
Vol 3 (1) ◽  
pp. 19-28
Author(s):  
Gina Alina Catrina ◽  
◽  
Bogdan Stanescu ◽  
Agnes Serbanescu ◽  
Georgiana Cernica ◽  
...  
Keyword(s):  
Redox Potential ◽  
Experimental Method ◽  
Hazardous Waste ◽  
Ph Value ◽  
Ph Values ◽  
Long Term Storage ◽  
Chemical Conditions ◽  
Term Storage

Long-term landfilling of hazardous waste should be a careful choice for any producer or generator of waste, as the behavior of the waste is different due to the physical-chemical conditions or following contact with other hazardous waste. In this study, the research undertaken was aimed at developing an experimental method for the assessment and characterization of hazardous waste for long-term storage. The method consists in the assessment of the behavior of heavy metals from waste, under different leaching conditions. To study various hazardous wastes, fly ash from the incineration of medical waste and slag from aluminum casting were chosen. Contact time, pH and redox potential are important parameters in the leaching process. The solubility of metals increases at pH values between 2 - 5 pH units and decreases at pH values between 6-12 pH units. The highest solubility of metals (As, Cr, Cu, Ni, Pb and Zn) in the tested waste was obtained after 48 hours at pH values between 2 - 5 pH units. Also, the values of the redox potential decrease almost linearly as the pH value increases. The developed method is a useful tool to assess the behavior of hazardous waste for long-term storage in landfills for this category of wastes.

scholarly journals Retesting the anti-doping samples: Best tool for deterrence?

2016 ◽  
Vol 64 (3) ◽  
Keyword(s):  
Good Tool ◽  
Long Term Storage ◽  
Technological Advances ◽  
Tour De France ◽  
Accredited Laboratories ◽  
Detection Window ◽  
Androgenic Steroids ◽  
Term Storage

Long term storage of the anti-doping samples and their ­reanalyses becomes today more and more a trend in the anti-doping community. The procedure has been implemented by the anti-doping authorities for the samples of the Tour de France and for the Olympic Games since Athens 2004 and has been always presented as a good tool to deter doping habits in top level sport. Recently, the World Anti-Doping Code introduced the possibility for anti-doping organizations to store the athletes’ samples up to ten years. The anti-doping authorities may ask to reanalyze the samples at any time during that period of time as a function of the implementation of new methods or instruments in the accredited laboratories allowing the detection of prohibited substances or their metabolites at a much lower concentration or for a larger detection window. The most significant technological advances for the detection of doping substances have been done in the characterization of various long-term metabolites of anabolic androgenic steroids. This allowed for increasing the time of detection by even a factor of four.

scholarly journals Characterization of Compaction and Dryout Properties of KE Basin Sludge During Long-Term Storage

2005 ◽  
Author(s):  
Calvin H Delegard ◽  
Adam P Poloski ◽  
Andrew J Schmidt ◽  
Jeffrey W Chenault
Keyword(s):  
Long Term Storage ◽  
Term Storage
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