Experimentation and dynamic modeling of batch packed distillation for star anise essential oil purification

2021 ◽  
pp. 1-13
Author(s):  
Xuan Truong Do ◽  
Thao Thi Nguyen ◽  
Van Xa Nguyen ◽  
Kien Trung Tran ◽  
Tuan Anh Vu ◽  
...  
Keyword(s):  
Essential Oil ◽  
Dynamic Modeling ◽  
Star Anise ◽  
Oil Purification

scholarly journals Experimental study on essential anise star oil purification in vacuum batch distillation

2021 ◽  
Vol 63 (11) ◽  
pp. 34-39
Author(s):  
Thi Thao Nguyen ◽  
◽  
Xuan Truong Do ◽  
Keyword(s):  
Essential Oil ◽  
Experimental System ◽  
Vacuum Pressure ◽  
Column Height ◽  
Gas Chromatography Mass Spectrometry ◽  
Volatile Components ◽  
Reflux Ratio ◽  
Batch Distillation ◽  
Star Anise ◽  
Oil Purification

Vietnam is one of the world’s largest annual anise harvest countries. However, products from anise are mainly in the form of dried anise fruit and crude star anise essential oil with low economic value. The main component of the star anise essential oil is trans-anethole which needs to be purified to produce higher-value products. This study focused on building an experimental system for purifying star anise essential oil by a batch distillation column working at vacuum pressure. The products obtained during the purification process were analysed by gas chromatography-mass spectrometry (GC-MS). Analytical results were used to evaluate the ability to separate volatile impurities in the crude star anise essential oil. Results showed that the bottom temperature of the tower below 150oC, corresponding to a vacuum pressure of less than 0.1 bar, can reduce the thermal decomposition of essential oils. The volatile components, such as α-pinene, β-phellandrene, limonene, and linalool, were thoroughly separated at the top of the tower. The purified star anise essential oil was from the bottom of the distillation and had the anethole composition of over 88% of mass fraction (wt.%). Anethole recovery efficiency was 98.5 and 88.8% at a pressure of 0.1 and 0.08 bar, respectively. The bottom product can have a higher anethole composition if increasing the column height, the reflux ratio, and decreasing the pressure and the quality of impurities removed at the top is increased.The experimental results are helpful for the calculation, design, manufacture, and operation of an industrial-scale essential oil purification system.

scholarly journals AVALIAÇÃO DOS GENES DE VIRULÊNCIA E FORMAÇÃO DOS BIOFILMES EM Escherichia coli ISOLADAS EM UM LABORATÓRIO CLÍNICO DE PRESIDENTE PRUDENTE/SP

2017 ◽  
Vol 9 (3) ◽  
pp. 13-23
Author(s):  
Hevelin Regiane Augusto Da Silva ◽  
Mikaely Aparecida De Souza Bonifácio ◽  
Mayla Silva Cayres De Oliveira ◽  
Lizziane Kretli Winkelstroter Eller
Keyword(s):  
Essential Oil ◽  
Biofilm Formation ◽  
Virulence Genes ◽  
Clinical Laboratory ◽  
Virulence Gene ◽  
Chain Reaction ◽  
Star Anise ◽  
Polymerase Chain ◽  
Host Infection ◽  
Progressive Accumulation

Escherichia coliisone of the main microorganisms that cause urinary tract infection (UTI). The objective of this work was to evaluate the presence of virulence genes, the biofilm formation and the potential inhibition of biofilms by essential oil of ginger and star anise in Escherichia coliisolated from a clinical laboratory at Presidente Prudente-SP. In the biofilm formation, the titration microplate technique was used and the polymerase chain reaction was used to evaluate the presence of the virulence genes. The results showed that 100% of the isolates formed biofilms. Only six isolates presented reduction of biofilms in presence of essential oil. The most frequent virulence gene was fimH(100%) followed by kpsMTII (99.9%) papC(98.9%) and fliC (84.8%). We emphasize that the microorganisms may be in a phase of progressive accumulation of virulence factors which facilitates the increase of the severity of the host infection

scholarly journals Effects of star anise (Illicium verum Hook.f.) essential oil on laying performance and antioxidant status of laying hens

2018 ◽  
Vol 97 (11) ◽  
pp. 3957-3966 ◽  
Author(s):  
Caiyun Yu ◽  
Jiandong Wei ◽  
Chongwu Yang ◽  
Zaibin Yang ◽  
Weiren Yang ◽  
...  
Keyword(s):  
Essential Oil ◽  
Antioxidant Status ◽  
Laying Hens ◽  
Star Anise ◽  
Laying Performance ◽  
Illicium Verum

scholarly journals Screening for Antiviral Activities of Isolated Compounds from Essential Oils

2011 ◽  
Vol 2011 ◽  
pp. 1-8 ◽  
Author(s):  
Akram Astani ◽  
Jürgen Reichling ◽  
Paul Schnitzler
Keyword(s):  
Essential Oil ◽  
Antiviral Activity ◽  
Essential Oils ◽  
High Selectivity ◽  
Selectivity Index ◽  
Viral Infectivity ◽  
Dependent Manner ◽  
Star Anise ◽  
Hsv 1

Essential oil of star anise as well as phenylpropanoids and sesquiterpenes, for example, trans-anethole, eugenol,β-eudesmol, farnesol,β-caryophyllene andβ-caryophyllene oxide, which are present in many essential oils, were examined for their antiviral activity against herpes simplex virus type 1 (HSV-1)in vitro. Antiviral activity was analyzed by plaque reduction assays and mode of antiviral action was determined by addition of the drugs to uninfected cells, to the virus prior to infection or to herpesvirus-infected cells. Star anise oil reduced viral infectivity by >99%, phenylpropanoids inhibited HSV infectivity by about 60–80% and sesquiterpenes suppressed herpes virus infection by 40–98%. Both, star anise essential oil and all isolated compounds exhibited anti-HSV-1 activity by direct inactivation of free virus particles in viral suspension assays. All tested drugs interacted in a dose-dependent manner with herpesvirus particles, thereby inactivating viral infectivity. Star anise oil, rich in trans-anethole, revealed a high selectivity index of 160 against HSV, whereas among the isolated compounds onlyβ-caryophyllene displayed a high selectivity index of 140. The presence ofβ-caryophyllene in many essential oils might contribute strongly to their antiviral ability. These results indicate that phenylpropanoids and sesquiterpenes present in essential oils contribute to their antiviral activity against HSV.

Star anise ( Illicium verum Hook. f.) essential oil: Antioxidant properties and antibacterial activity against Acinetobacter baumannii

2019 ◽  
Vol 34 (4) ◽  
pp. 260-270 ◽  
Author(s):  
Ângelo Luís ◽  
Sónia Sousa ◽  
Judith Wackerlig ◽  
Daniel Dobusch ◽  
Ana Paula Duarte ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Essential Oil ◽  
Acinetobacter Baumannii ◽  
Antioxidant Properties ◽  
Star Anise ◽  
Illicium Verum
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