scholarly journals Novel antimicrobial activities of self-nanoemulsifying drug delivery system (SNEDDS) ethyl acetate fraction from Garcinia mangostana L. peels against Staphylococcus epidermidis: Design, optimization, and in vitro studies

2021 ◽  
Author(s):  
Pratiwi Liza
Keyword(s):  
Drug Delivery ◽  
Ethyl Acetate ◽  
Design Optimization ◽  
Drug Delivery System ◽  
Delivery System ◽  
Staphylococcus Epidermidis ◽  
Ethyl Acetate Fraction ◽  
Antimicrobial Activities ◽  
Garcinia Mangostana

scholarly journals Assessment of Self-Nanoemulsifying Drug Delivery System (SNEDDS) of Ethyl Acetate Fraction from Mangosteen (Garcinia mangostana L.,) Peels to Eschericia coli, Pseudomonas aeroginosa, and Proteus mirabilis

2019 ◽  
Vol 24 (3) ◽  
pp. 189 ◽  
Author(s):  
Liza Pratiwi
Keyword(s):  
Drug Delivery ◽  
Antibacterial Activity ◽  
Ethyl Acetate ◽  
Drug Delivery System ◽  
Delivery System ◽  
Proteus Mirabilis ◽  
Ethyl Acetate Fraction ◽  
Garcinia Mangostana ◽  
Diabetic Ulcers ◽  
Ethanol Extracts

Mangosteen peels have antibacterial activity. SNEDDS has many advantages in developing a drug delivery system to increase the penetration of active compounds. The purpose of this study was to compare the effectiveness of the antibacterial SNEDDS of ethyl acetate fraction from mangosteen peels and ethyl acetate fraction of mangosteen peels without SNEDDS preparation as an antibacterial against Eschericia coli, Pseudomonas aeroginosa, and Proteus mirabilis, that cause diabetic ulcers. This research began with maceration. The thick ethanol extracts were continued and fractionation was carried out with ethyl acetate solvents then was formulated into SNEDDS. The measurement of the antibacterial activity with the bacterial growth inhibition parameters of SNEDDS preparations extracted from ethyl acetate fraction of mangosteen peels was compared with ethyl acetate fraction of mangosteen peels without SNEDDS preparation. Data were analyzed using independent sample T-Test. The results showed the SNEDDS preparation of ethyl acetate fraction from mangosteen peel had activity against both types of bacteria causing diabetic ulcers, but it had no activity against Proteus mirabilis. The results of statistical analysis showed that there were significant differences in the activity of SNEDDS ethyl acetate fraction of mangosteen peels and ethyl acetate fraction of mangosteen peels without SNEDDS in Eschericia coli and Pseudomonas aeruginosa.

scholarly journals Applicability of Gum Karaya in the Preparation and in Vitro Evaluation of Losartan Potassium as Chronotherapeutic Drug Delivery System

2015 ◽  
Vol 7 (1-2) ◽  
pp. 65-74
Author(s):  
K. Latha ◽  
V. V. Srikanth ◽  
S. A. Sunil ◽  
N. R. Srinivasa ◽  
M. U. Uhumwangho ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Tensile Strength ◽  
Drug Delivery System ◽  
Delivery System ◽  
Lag Time ◽  
Losartan Potassium ◽  
In Vitro Dissolution ◽  
Burst Release ◽  
Gum Karaya

The objective of this investigation is to study the applicability of gum karaya, the natural gum for the preparation and in vitro evaluation of losartan potassium, as Chronotherapeutic Drug Delivery System (ChDDS). The compression-coated timed-release tablets (CCT) containing losartan potassium in the core tablet were prepared by dry coating technique with different ratios of gum karaya as the outer coat. The parameters investigated were tensile strength, friability, in vitro dissolution studies and drug concentration. The optimized formulation was further characterized by powder XRD and FTIR to investigate interactions and no interactions observed. The tensile strength and friability of all the CCT were between 1.06-1.23 MN/m2 and < 0.3% respectively.  All the CCT showed a clear lag time before a burst release of drug. However, the lag time of drug release increased as the amount of gum karaya in the outer layer increased. For instance, the lag time of LGK1, LGK2, LGK3, LGK4, LGK5, LGK6 and LGK7 were 16, 10.5, 5.5, 3, 2, 1.5 and 0.5 hrs respectively.  The drug content of all the CCT was >98%. Formulation LGK3 was taken as an optimized formulation which can be exploited to achieve ChDDS of losartan potassium for the treatment of hypertension. 

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